Chaeng environmental friendly lime kiln

Recently, the number of advisory customers for Great Wall Machinery lime kiln is increasing especially gains more attention from many building materials factories, after put into production of annual output of 400,000 tons lime production line, which is Great Wall contract to build for Guangxi Huayan.

It is reported, at present, there are a lot of lime production line were built in domestic, their common features are output in 200-300 tons per day, running in good condition in the later, ideal for build in small and medium lime enterprises, for example, Guangxi Huayan with capacity of 300 tons per day .

Unlike domestic, the new lime kiln capacity is higher at abroad, 2200 tons per day has been put into production, which will be the development tendency of domestic lime kiln. That is to say, develop to upsizing, towards large-scale direction.

1、How about the lime activity degrees produced by the environmental lime kiln?

The lime activity degrees produce by environmental lime kiln is higher than the shaft kiln. The lime activity can reach up to 400ml on equal terms.

2、How about products produced by the environmental kiln?

3、What’s the requirement on the granularity of raw material for lime kiln?

Rotary kiln can be directly calcine fine limestone in 10-50 mm. Build lime production line with rotary kiln, not only can make full use of high-quality limestone resources, and in line with the lime industry sustainable development policy.

4、Does lime production line need configure the preheater?

Vertical preheater configured in the kiln end can make full use of high temperature flue gas produced by calcination in rotary kiln; preheat limestone from room temperature to the initial state of decomposition, which not only can greatly improve the production of rotary kiln, can reduce heat consumption per unit product adequately.

5、How to do the environmental friendly?

The smoke temperature exhaust from vertical preheater of kiln end is low, between 280-350 ℃; low dust content, about 20g/Nm3, efficiently simplify the configuration of follow-up treatment to the flue gas, can successfully meet environmental requirements.

6、How much money to invest environmental lime kiln?

Because of different production capacity and the specific mining conditions of each region, the entire line and single devices with different prices, so please contact us for the details.

7、What is the production process of lime line?

Lime production line is a complete production line that composed of vertical preheater, rotary kiln, grate cooler, flue gas treatment system, raw material conveyor systems, product delivery systems, coal grinding system.

All line adopts advanced technology, DCS central control system in reliable performance, centralized operation and management in the main control room.

Chaeng Energy saving cement vertical grinding mill

Now, most cement factory in China still take the high energy emission and high pollution cement ball mills.But the vertical roller mill has take the materials bed grinding, and take the crushing, grinding,drying and selection together. During grinding, it not only reduce the electric emission, but also reduce the Co2 emission. For many companies, take the vertical roller mills to replace the ball mills is the best choice. The age of grinding without balls is coming. 
1. Vertical roller mill system saving energy can over 30%.        
From our customers, compared with ball mills, the vertical roller mill has big advantages of unit electric emission, grinding balls loss and the total equipment. 
Take our GRMK46.41 vertical roller mill as an example, the details loss parameters as the form below:

Items	φ4.2×13m ball mill and roller press machine	GRMK46.41 vertical roller mill
Design capacity(t/h)	140	150
Reality capacity(t/h)	150	180
Fineness(m²/kg)	370	370
Electricity emission(kWh/t)	49	33
Grinding balls loss(g/t)	25	5
Total power(kWh)	7000	5000

From the form above, the electric emission of vertical roller mill is 33kwh/t, compared with ball mill, lower 16kwh/t，the lower ratio is 33%. At the same time, the capacity will raise 30% and the cost lower 80%.

2. The vertical roller mill system can reduce the Co2 emission.

With the obviously low energy cost, high efficiency advantages,according to the texts, compared with ball mills, during per ton cement production, the vertical roller mill can reduce the Co2 emission 7.9-19 kg. It means that, a 5000t/d cement plant, it can reduce the Co2 emission 1185o--28500 tons per year.

How to control the quality of steel casting Nodes ?

Thesteel casting Nodes is the hinge of force transferring in the design of steel structure and play an important role in the whole steel structure. It is the intermediate switch station for transferring the floor load and roof load to pillars. We can understand simply that ,if it appears quality problems of steel casting nodes in anti-seismic progress , the whole floor would collapse.Thus it is very important.

As domestically well-known large steel casting factory, Chaeng  Steel Casting has provided large steel nodes processing service for many domestic airport, stadium and high-speed rail station (HSR). It is considered as the supplier with first-class quality and first-class service by numerous customers. The person in charge of it tells How to get the high-quality steel casting nodes. on one side, it comes from the years of exploration for steel nodes casting technology.on the other side , it depends on the over-all testing for nodes quality by advanced testing equipment

Testing for chemical components

The steel nodes of steel structure have higher requirements for chemical components than other fields. It restricts the contents of C, S and P. So it needs to test molten steel . Chaeng Steel Casting adopts spectrum analyzer to test the chemical components of steel nodes and it can analyze the chemical elements of casting steel materials visually and directly.It ensures that the selected materials conform to the standard.

Mechanical Property inspection

Chaeng Steel Casting test the mechanical property by the standard specimen made by the same furnace molten steel of steel casting , and provide the test report for mechanical property

Non-destructive defection inspection

We own advanced ultrasonic , magnetic defection equipment,which can do 360 non-destructive defection inspection for steel castings internally and externally.it can effectively guarantee the quality of steel nodes. We have achieved the secondary level for the key parts inspecting.

Other inspection

To avoid the quality problems, we do surface roughness inspection and beveling inspection for steel nodes.

If there are needs for large steel casting nodes and other casting parts recently, please call our HOTLINE +86-371-55019608 and welcome to consulting.

For large steel casting nodes , Chaeng is your best choice.

300,000t/a Nickel Slag Grinding Production Line Constructed by CHAENG Went into Operatio

Good News from Indonesia: 300,000t/a Nickel Slag Grinding Production Line Constructed by CHAENG Went into Operation

On November 3, 2016, a special grand ceremony was held in PT. Indoferro --- PT. Indoferro’s nickel slag powder EPC project constructed by Chaeng was finished and went into operation! PT. Indoferro is very satisfied with the services provided by CHAENG, and praised that CHAENG’s quality is high, technology is top-ranking, equipment is superior, and construction is delicate.

Cooperation Details

After had visited many enterprises manufacturing industrial residue grinding equipment in China, on November 10, 2015, PT. Indoferro finally chose CHAENG as its cooperative partner and signed the contract with CHAENG on its300,000t/a nickel slag powder EPC project.

On May 11, 2016, the vertical mill, auxiliary machine and parts of PT. Indoferro’s 300,000t/a nickel slag powder production line were delivered to Indonesia.

In September, 2016, the design, civil engineering and equipment manufacturing of PT. Indoferro’s 300,000t/a nickel slag powder production line were successfully finished, and the installation and commissioning of the equipment were also near the end.

On November 3, PT. Indoferro’s 300,000t/a nickel slag grinding plant EPC project was finished and went into operation!

The finish of the project also indicates a new success that CHAENG slag grinding EPC goes into overseas market, and CHAENG will continue to put the development idea of Xinxiang’s CHAENG and CHAENG of the world into practice, and sell the high-quality grinding equipment in the global market. To get more information, please follow us in CHAENG’s official WeChat.

Chaeng GGBFS Turnkey Service with high efficiency communication and professional cooperation

In recent years, Chaeng has constructed more than 60 GGBFS production lines for domestic customers. Chaeng has been recognized as first brand for waste slag treatment With high market share in China industry.

As first brand GGBFS Turnkey cement plant Project supplier, CHAENG has good reputation among customers. We are not only to do best on the quality of auxiliary machine, like dust collector, reducer etc.to guarantee the stable operation, but insist on the business concept of “satisfaction of customers is our eternal pursuit” to provide one-station solution from pre-sales to after-sales.

Chaeng deeply knew that excellent one-station solution need team cooperation and high efficiency communication among each department.

1. Pre-sales Service

After knowing about customer’s need, we provide flow sheet and offer within 48 hours for customers.

You are warmly welcomed to visit our company, we provide all services for you.

2. In-sale Service

Chaeng guarantee that all the equipments will be delivered within 6 months after signed contract and received deposit. During production process, you are welcomed to supervise and examine goods. If required, we provide solution of packing and transportation within 7 days before shipment.

3. After-sale Service

When the equipment shipped to customer site, we provide two technicians to guide installation, debugging and operation.

If you hope more operation skills, we can also provide on-site training service, let you master the key skill about how to enhance productivity.

We provide solution within 24 hours when the problem happened,guarantee the normal operation.

The factors of high-efficiency communication and professional cooperation, One-station solution and excellent quality help Chaeng to be first-class comprehensive service brand in grinding system.

Chaeng Vertical roller mill Introduction

Vertical roller mill is typically designed to deal with industrial waste slag. Due to high physical and chemical activity, and potential hydraulicity, waste slag has been widely as admixture matters in the cement industry to replace the equal cement in the concrete to improve the quality and durability of the concrete.

After almost a decade cooperation with experts on vertical mill manufacturing and scientific research institutes both in home and abroad, the GRM series vertical mills dedicated to be developed and produced by chaeng, have the characteristics of reliable performance, compact structure, convenient maintenance and outstanding energy saving, etc., after incessant perfection. At present, we can produce the supporting raw material vertical mill,coal vertical mill, and cement vertical mill that can cater to 300-5000 t/d cement production line, and the series slag vertical mills with annual production capacity of 0.2 million tons, 0.3 million, 0.45million tons, 0.6 million rons,0.9 million tons and 1.2million tons.

Vertical roller mill Unique design characteristics

1.The compound separator improved power selection efficiency.

2.Has automatic function of roller uplifting and down falling and can realize idling startup.

3.Adopt the sealing of jointing arc board, simple and reliable in structure with good sealing effect.

4.Resorting to the roller turning equipment can conveniently turn the roller out of the mill for overhauling.

5.Mechanical limiting structure can avoid the direct metal friction and collision between roller and millstone, increasing the use security.

6.The operation pressure is low in hydraulic pressure system, decreasing the oil leaking failure and vibration of mill, which is conducive to operation and management.

7.Roller bearing adopts the concentrated cycle lubricating of thin oil, guaranteeing the running of bearing under the conditions of low temperature and pure grease and effectively prolonging the longevity of bearing.

Vertical Roller Mill Structure

Below is the structure of the vertical roller mill diagram, which is composed of a separator, roll grinding, grinding, pressure device, reducer, motor, shell and other components. The separator is an important component for ensuring product fineness, it consists of the drive system, rotor, guide vanes, a shell, a coarse powder blanking cone outlet, etc.

The grinding roller is the main components of compacted crushed to the material, which is composed of the roller sleeve and roll heart, axle and bearing and roller bracket etc.. Each friction has 2 ~ 4 grinding roller.

Grinding disc is fixed on the reducer shaft, driven by the speed reducer rotating disc.

The pressure device is provided an important part of grinding pressure, which is composed of high pressure oil station, a hydraulic cylinder, a pull rod, an energy accumulator and the like, can exert enough pressure to make the material crushing and grinding roller. But the spring pressure device.

To achieve the requirements of environmental assessment of the activity of lime kiln manufacturers

In order to promote and application of new active lime rotary kiln, accelerate the promotion of new energy-saving emission reduction technologies to improve energy-saving environmental protection level. Chaeng positive response to environmental pollution-free policy for the production of lime kiln to strictly control.

Chaeng lime kiln process description:

Material from the kiln (cylinder of the high-end) into the kiln calcination. Due to the tilting and slow rotation of the cylinder, the material moves both in the circumferential direction and in the axial direction (from the high end to the low end), continues the process of decomposition and sintering, undergoes physical and chemical changes, Material by the kiln hood into the grate cooler cooling. Fuel from the kiln head into the kiln, the combustion of waste gas and heat exchange of materials, derived from the kiln.

Great Wall mechanical advantages:

1, advanced technology, high production efficiency, good quality lime

The Lime Rotary Kiln produced by the chaeng adopts advanced vertical preheater with advanced structure and low pressure loss, which can effectively improve the preheating effect and improve the production efficiency. The lime produced is very good and the lime activity is more than 300 ml. The ideal energy-saving environmental protection lime kiln equipment.

2, energy-saving calcination, advanced calcination mechanism

Furnace design uses fully sealed calcination mechanism, the kiln fire-resistant insulation layer using multi-layer refractory, mild, furnace insulation design life of more than 5 years. In order to effectively use energy, the upper and lower part of the furnace using heat exchange way, greatly reducing the heat from the top and bottom of the loss.

3, using the inverter, energy-saving equipment operation

The lime kiln used in the production of power are used in the inverter control and operation, to avoid a large horse-drawn car and no load no-load operation of the phenomenon, saving an average of 40% or more.

Lime rotary kiln Investment income:

Active lime is an important auxiliary raw material for steelmaking. The use of active lime has a series of features such as improving the quality of molten steel, increasing production, reducing steel consumption and cost, and stable operation. Where the use of active lime steel-making enterprises have achieved significant economic benefits.

The data show that over the past decade, China's steel lime production increased by 40%, but the activity of more than 300ml of high-grade lime from only 27% to 29.5%, low utilization rate, so good quality lime production And the application prospect is huge.

New Type of Lime production line

Due to the temptation of 20% growth of lime demand for calcium carbide, steel industry, a lot of kilns are put into use in the market. But the production technology and product quality can't meet the need of modern production; the activity degree of product is low, mild and excessive calcination cannot be controlled give rise to fuel consumption and serious environmental pollution.

As a result, the new environmental protection lime kiln is sure to replace the original old lime kiln.

First. Performance environmental protection

Xinxiang Great Wall lime kiln advantage

Rotary kiln mainly consist of feeding system preheating calcination system, cooling system, finished product storage systems, exhaust gas treatment system,pulverized coal preparation system and air compressor system.

1.activity is higher than the traditional shaft kiln 30ml

The material heated evenly in the revolving lime kiln, the probability of mild and excessive calcination is low. The lime activity degrees produce by lime rotary kiln is higher than the shaft kiln.

02Production capacity reach up to 1500 t/d

The lime kilns produced by Great Wall Machinery have large capacity, the output can reach to 1500t/d, operating well to guarantee enterprise up-scaling and reduce the production cost.

03Gas fuel, energy saving and environmental protection

Great Wall lime kiln belongs to open type calcine equipment, advanced manufacturing technique，lower energy consumption than the old lime kiln calcine system, more environmental protection for adopts the exhaust blast furnace gas.

04Auto-control reduce the labor cost

Auto-control by using DCS remote control system, only need 2-3 operating personnel in the whole line.

05Good quality of finished products, low probability of mild and excessive calcination

Product quality is uniform, the probability of mild and excessive calcination less than 8%.

Active Lime Production Line System
Great Wall Machinery can supply 200-1500t/d active lime production line EPC, the one stop "turnkey" service that provide from scientific reports, design, equipment, construction, installation, commissioning, reach production targets. Welcome customers to call us:+86-371-55019608.
working principle
Qualified limestone particles(20-50mm) be ascended by the hoist and transported into stock bin at the top of the preheater. Stock bin feeding amount be controlled by the up and down two material level meters. Material distributed by tremie pipe to all indoor in preheater. The limestone was heated to about 900℃ by kiln flue gas with temperature in 1150℃ in preheater, about 30% was decomposed and pushed by the hydraulic rod into the rotary kiln. The limestone was decomposed into CaO and CO2 and discharged out of the cooler after cooled to below 100℃ by blowing cold air. The hot air with temperature in 600℃ after the heat exchange enter into the kiln and mixed firing with coal gas.

Annual 200,000-1,000,000 tons Slag grinding plant

GGBS can euivalently replace the cement in concrete and other cement products and obviously improve their comprehensive performance.These years, the high quality vertical roller mill slag powder market in China has become more consummate, its function and value have been widely recognized and used in large buiding project, dams, urban roads, under water projects,coast defence, oil field and chemical anti-corrosion projects etc.

Slag Grinding Station Client's Profit

1.A Slag Grinding plant Station Averagely three years needed to recover cost of investment on new production machines;

2. Applying the latest technology and techniques, production energy consumption significantly reduced;

3. Initial building cost, operation cost and maintenance cost, if costs including civil engineering, electrical control cabinet, then construction investment is only 70% - 80% of that for ball mill

4. Finished cement production is 55~250 t/h if adopting vertical roller millgrinding process, its PC42.5 cement specific surface area is 3300 ~ 3800 cm²/g, achieved high capacity and ultra fine requirements

Vertical mill has some advantages than ball mill in grinding production line

1. Vertical mill construction area is 70% of the tube/ball mill

There is a classifier in vertical roller mill, and it is the hot gas conveying material. The dust gas is directly conveyed into powder collection, so vertical mill has simple system and design, low failure rate, high efficiency operation, compact layout, thus it significantly reduces construction area and space, and help enterprise to save land resources effectively.

2. Low noise, about 20 to 25 decibels than ball mill

There is no direct contact between grinding rollers and grinding table, low noise. The noise control meets requirements of Emission Standard of Environmental Noise Control of Industrial Enterprises "(GB12348-2008). It effectively improves the enterprises’ environmental benefits.

3. Low dust concentration meets the National Standard

Vertical mill is sealed and with negative pressure operation, less dust, clean operation environment. The dust emissions data meets requirements of Air Pollution Emission Standards of Cement Industry (GB4915-2004). Dear Mr. Schlitzerm Morrise,

4. Less metal abrasion of Vertical roller mill, low unit loss

As there is no direct contact between metal in the operation, the vertical roller mill has less metal abrasion, compared with the ball mill, the unit loss is reduced greatly. So in operation process, vertical roller mill has low depreciation speed, low consumption, and can effectively improve the operation time and stability, and that has greatly reduced production cost.

5. PC42.5 specific surface area 3300 ~ 3800 cm2/g

It is convenient for vertical mill to adjust the rotational speed and roller pressure, wind speed through separator, also it can adjust product fineness easily. The qualified product will be separated in time, what avoids excessive grinding problem of tube mill. The product size is even, high homogenization degree, excellent quality.

Another slag production line successfully put into operation!

September 28, by chaeng contracted of the Guangdong Jin Bai of 600,000 tons of slag powder production line project put into operation, and successfully passed the acceptance.

The slag production line host selected chaeng independent research and development manufacturing GRMS46.41 slag vertical mill, the entire production line design is reasonable, high degree of automation, smooth operation.

From the control data that, the slag grinding plant consumption 37 Kw/h, yield 125 tons / h, surface area of 450 m² / kg, the indicators have reached the design goal.

After the project put into operation, Guangdong Jin Bai Li said that the chaeng mill quality and service are very satisfied, and highly praised the chaeng specialization, a high level of project installation team.

Chaeng is committed to creating the industry first-class comprehensive system of grinding service providers brand, adhere to the "customer satisfaction is our eternal pursuit of" business philosophy, devaluation industry "three heart" service, to provide pre-sale, sale, sale Station-wide overall service solutions, and truly allow customers to experience the "choice rest assured that the use of peace of mind, service Shuxin."

200-300 tons per day of lime rotary kiln a complete production line price

As early as the Ming Dynasty, the Chinese people have begun the preparation of lime calcination of limestone, used in construction, and thousands of years ago has a history. Therefore, Chinese people already have a mature lime limestone firing techniques.

First, the most advanced lime kiln -roary kiln

After long years for baking active lime and light burned dolomite production technology continues to progress, from the old shaft kiln to shaft kiln, to the large-scale rotary kiln, lime kiln, active limestone kiln, not only to achieve the Nissan production capacity in 1000 tons, to meet the needs of modern industry, calcined intelligent control technology, to avoid the traditional kiln burnt rate, the high rate of students burned, while greatly reducing energy consumption

Currently, 200-300 TPD lime rotary kiln production line has become the domestic market common lime production project specifications. According to its energizing effect is divided into different gas kiln, coal-fired rotary kiln, rotary kiln fuel mix.

Second, 200-300 tons of lime kiln a complete production line process

Lime rotary kiln a complete production line mainly consists of a vertical preheater lime kiln, vertical cooler composed of lime rotary kiln production line of the a complete process as follows:

Active lime calcining system is composed of a vertical preheater, rotary kiln, vertical cooler composed of material from the preheater at the top of the silo slip through tubing into the cutting body preheater, preheater materials channel provided with low pressure drop within the beam, can effectively reduce the resistance loss of the flue gas, reducing power consumption and exhaust equipment, flue gas after the warm-up through the limestone dust bag filter by the fan into the atmosphere, while the active lime kiln by the incoming the high temperature flue gas material preheated to 900 ℃, so that partial decomposition of limestone, then followed by the hydraulic push rod is pushed into the kiln smoke chamber and then into the tail of the rotary kiln, the rotary kiln calcination and then discharged into the vertical cooler inside, the cold air blown by the fan, the material was cooled to room temperature + 80 ℃ below the discharge cooler, cold air in the cooler is heated while the material through the kiln into the kiln hood, a secondary combustion as fuel air.

Which mainly comprises a transmission gear, supporting roller device, carrier gear wheel supporting device, cylinder, head kiln, kiln tail and seals and other components:

1. the supporting device: Advanced shaft structure, automatic temperature measuring device and provided with electrical heating device.

2. gear wheel supporting device: divided into mechanical and hydraulic thrust gear wheel categories. Hydraulic block device is equipped with advanced hydraulic control system.

3. transmission: with a single drive and dual drive. Speed motors, DC motors or variable frequency motor speed control speed, reliable operation, energy efficient.

4. with plate cylinder wheel: wheel taken off the plate as fixed, adjustable and floating pad, has a simple structure, easy maintenance and replacement, not to hurt the removable cylinder and so on.

5. the sealing device: There are many forms of alternative seal according to different type of kiln design. Clamping cylinder seal, spring-loaded seal, seal weight graphite block, graphite block sealing spring, scale films labyrinth seals, labyrinth seals and axial seal combination of the above forms and now more commonly used flexible sealing, etc., which is characterized by traverse cylinder and swing adaptability, good sealing effect.

Third, 200-300 tons of lime kiln how the selection?

CHAENG ( Great Wall Machinery ) 200t / d lime rotary kiln production line matching is: φ2.8 × 50m lime rotary kiln, supporting coal mill model Φ1.7x2.5m, to obtain satisfactory operating results.

200tpd limestone calcination system supporting the technical parameters of the system
Rotary Kiln	Rotary Kiln Specifications	φ2.8×50m Rotary Kiln
	Production capacity	200T/D
	Main motor power	75KW
	Voltage	380V
	Calcination temperature	1200℃

Fourth, the CHAENG of mechanical rotary kiln production capacity to fight to win the praise of customers around the world

With large-scale lime industry and modernization needs, CHAENG launched a large package lime rotary kiln production line of large-scale, in-line production capacity up to 1500t / d, its main specifications are: Nissan 300 tons of lime kiln, Nissan 200 tons lime kiln, lime kiln, Nissan 600 tons, widely used in metallurgy, iron and steel, chemical, refractory, ceramic, paper industry.

With the ever-increasing ability to innovate, prominent flexible customization capabilities, maturing delivery capabilities to win the trust and support customers around the world, the CHAENG will always first-class products, improve service and sincere cooperation with domestic and foreign merchants, harmony and win-win development of.

slag grinding production lines

As the important equivalent substitutes for cement production,GGBFS can not only significantly improve the overall performance of cement and concrete, but also significantly reduce the production cost. Now it has been widely used in cement plant, grinding station and steel factories as a new kind of high effectively admixtures. For this situation, we may say: "who first invests will first benefits."

CHAENG (Great Wall Machinery) can undertake 20 tons --1.5 million tons of Blast furnace slag/Steel slag/Nickel slag/Manganese slag powder production EPC projects. Up to now, CHAENG has constructed more than 100 slag grinding production lines at home and abroad.

Process Description

The stacked slag is packed and feed by the forklift trucks, then transported by belt conveyor. During transmission, the slag will pass through the iron separator and vibrating screen, then through the weighing equipment and elevator, finally come into the vertical roller mill. With the hot air form cowper stove, the slag after grinding, will come through the separator, while drying. Slag meets the fineness requirement will pass through the separator, then delivered by air blower and elevator, finally come to the storage silo.

Why choose vertical mill for slag grinding ?

Energy-saving, environment friendly, simple process, high intelligence

Nowadays, the slag vertical roller mills are widely accepted by customers, but some customers may still doubt about the vertical roller mill and ball mill. By doing research in more than 10 customers factory, we have summed up these difference between this two kinds of mills.

Vertical mill and ball mill process contrast

Investment return

Slag grinding line investment returns analysis

Take our 600,000 t/a slag power production line as an example, the total investment of this project is RMB 50 million. It took into production on April, 2011. Within 2 years, all the investments has returned and now is benefits. The investment details list as below:

CHAENG active Lime Production Line

CHAENG manufactures the complete set of equipments for the active lime equipment. Our company undertakes the design and manufacture of rotary kiln, shaft cooler, vertical preheater and so on. It meanwhile supplies refractory materials. Great wall corporation technology from abroad to manufacture the vertical preheater, shaft cooler and limestone rotary kiln.
Technical Features of Active Lime Equipment
1. Vertical preheater has an advanced structure. The preheater has effectively improved preheating effect. Limestone decomposition rate reaches 20% to 25%. Limestone of 10 to 15 mm grade could directly be used in this vertical preheater.
2.Shaft cooler in the rotary kiln makes the temperature of lime goes up to 800℃ plus ambient temperature. It makes the limestone suitable for transportation and storage. This cooler can also preheat the secondary air to over 7000℃. It reduces movable parts and special materials of the active lime equipment.
3.The two ends of the rotary kiln are sealed by fish scale type seal method. The air leakage rate is less than 10%. Radiant heat loss is therefore reduced.
Process Flow of Active Lime Equipment

1.Preheating
Limestone is heated to 900℃ by the 1150℃ rotary kiln gas in the preheater of active lime production line.
2.Calcining
After sends the limestone into the rotary kiln. The limestone is calcined and decomposed into CaO and CO2.
3.Cooling
Decomposed limestone is then sent into cooler of the active lime production line. The lime is cooled to less than 100℃ by cold air.
4.Waste Gas Treatment
The 600℃ hot air enters into rotary kiln and burns with coal gas. The waste gas is then mixed with cold air. Draft fan of this active lime equipment sends the waste gas into bag dust collector. Exhaust fan then discharges the waste gas into chimney.
5.Storing
After coming out of the cooler, the lime is transported to limestone storage silo of the active lime production line by vibrating feeder, chain bucket elevator and belt conveyor.

CHAENG production vertical roller mill product

Vertical roller mills are large grinding machines developed, designed and manufactured by CHAENG,CHAENG vertical mills feature a rational and reliable structure as well as an advanced process that combines drying, grinding, separation and conveying, which is suitable for grinding materials of different types and sizes.CHAENG vertical mills are widely used in industries such as cement, power generation, metallurgy, chemical and coal processing.A Vertical mill consists mainly of motor, planetary gearbox, grinding table, grinding rollers, rocker arms, mill stand, mill housing, separator, water spray unit, pressure device, lubrication system, and rocker arm sealing.

Rollers can be lifted and lowered automatically, thus the mill can be easily started with materials.Welded arc plate is used for sealing. Due to its uncomplicated structure, it is reliable in operation and provides for a good sealing effect.A centralized oil circulation system is applied for the lubrication of the roller bearings, which ensures the bearings to run at the most suitable temperature and with clean oil so that a long service life is achieved.A mechanical restraining device prevents friction and collision between rollers and the grinding table.A hybrid separator is used to improve separating efficiency.The hydraulic roller swing-out device provides for ease of maintenance.Low operation pressure of the hydraulic system reduces potential oil leakage and mill vibration, providing for smooth operation and reduced maintenance.
CHAENG can provide vertical roller mill,it is can grinding all kinds of material,such as coal , raw material , cement , slag and so on.if you have ang need for the VRM vertical roller mill，please contact online or leave your contact information，we will contact with you as soon as possilbl.

The Best Supplier of Slag Grinding Plant in China

With people’s knowing about the granulated blast furnace slag performance and economic value, now many cement and concrete enterprises start to produce and use granulated blast furnace slag. The activity granulated blast furnace slag used in cement production can replace large amount clinker, used in concrete can replace large amount cement and improve the concrete performance. It can lower the production cost and save energy.
With the developing of granulated blast furnace slag market, a lot of slag grinding plant suppliers came out. CHAENG ( Great Wall Machinery ) is one of the best supplier among them. During two years, we have cooperated with more than 60 enterprises like Shanghai Bao Steel、Aoshen Steel、Henan Meng Electric Cement、Chunjiang cement etc.
How the CHAENG slag grinding plant win the appreciation from customers?
CHAENG understand customers’ requirement, put out the EPC production line service. We provide full instruction and equipment production service from the early project plan to the finally production, including the raw materials test, projects application documents, project design and solve program, installation and turnkey test etc. CHAENG pursues the faithful, easy and good service. And in nearly two years, win more than 50 customers.
After the long time market test, now, CHAENG has win many loyal customers. Many old customers’ new slag grinding plant , still chose us.
Shanghai Bao Steel has cooperate with CHAENG for the Wuhan cement ball mill project in 2011 and Ningbo 150t/a steel slag production line project in 2013. Last year, they thirdly choose CHAENG as their partner of their slag-tech improving project, and build long time cooperation with us.
Xuchang Tengxin’s second 30t/a nickel slag production line still choose CHAENG. They sent a silk banner to us and quite satisfied with our project time limit, service and product quality.
Xinxin Cement’s third 60t/a slag grinding plant still choose CHAENG as their supplier.
Untill 2013, the slag grinding plant built by CHAENG has produced more than 11,850,000t slag powder. We can proudly say that, now the CHAENG is the first rate supplier of Chinese grinding industry.

Industrial Waste Slag Solution-Slag EPC Project

 In recent years, Southeast Asian countries, accelerate the adjustment of industrial structure, vigorously promote the industrialization, urbanization process, but the infrastructure construction is still in the ascendant, especially in Indonesia is flourishing demand for steel.this year is expected to more than 15 million tons, up nearly 10% on the previous year, and by 2025 the number will reach 26 million tons.
Growing metallurgical production inevitably produce large amounts of industrial waste slag. Currently Indonesia mineral slag, nickel slag and iron slag, processing is still in its infancy, almost no processing, some of them used for reclamation or fill the crater. Without any disposing, they will case the raise dust, pollute the air and soil, and silt the river. The toxic chemicals in them will even harm human and animals’health.
On 10th November, 2015, Chairman of Indonesia Growth Steel Group, came to CHAENG (Xinxiang Great Wall machinery co. LTD.) had made final inspection and signed about 300,000 t/y of nickel slag grinding line project, which will be put into operation in the second half of 2016. This cooperation indicatesCHAENG mineral slag EPC project, steel slag EPC project and nickel slag EPC project go abroad to the world again.
It is said that the utilization rate of steel slag for some developed countries reach 60%. For example, French and Canada use steel slag as ballast of railway. Japan and Germany use steel slag as cement raw material. Some countries of Western Europe extract the calcium, silicon, manganese and microelement in steel slag use as fertilizer, and all of those make steel slag re-apply in life, the problems of difficult stacking and environmental pollution are solved completely.
With people’s knowing about the GGBS (Ground Granulated Blast Furnace Slag) performance and economic value, now many cement and concrete enterprises start to produce and use GGBS. The activity GGBS used in cement production can replace large amount clinker, used in concrete can replace large amount cement and improve the concrete performance. It can lower the production cost, save energy and reduce emission.Such as Mineral slag is the waste slag discharged from blast furnace during pig iron smelting. It could be concrete admixture after grinding process.Nickel slag is the solid waste generated by smelting nickel iron alloy. The nickel iron alloy is the main raw material for stainless steel.Steel slag is the waste residue in the process of steel making, including converter slag and electric furnace slag, approximately takes 15-20 percent of crude steel capacity.Manganese slag is the waste of smelting Manganese. It could be the material of silicon manganese alloy after milling process.

Vertical roller mill is typically designed to grinding industrial waste slag to powder. The integrated vertical milling system, pioneered by CHAENG that has successfully built more than 100 mineral slag, steel slag and nickel slag grinding lines at home and abroad, can deal with all the slag mentioned above. GRM has been tested and verified by the practices, and also benefits millions of money for enterprises.
Advantage of CHAENG’S vertical roller mill
1. High efficiency and low power consumption in powder milling
2. The consumption of material is low in unit product
3. Low noise in material powder milling, operate with negative pressure, low dust pollution
4. Simple in technology flow, meanwhile finish the function of material powder milling, drying and powder selection
5. With easy operation system, saving labor cost.
6. Low area occupying, compact allocation, light weight in system equipment and low investment in civil construction

Slag grinding plant 2.0 system

To meet customer demand for integrated procurement, CHAENG ( Xinxiang Great Wall Machinery ) in the original "one vertical mill 6 service", based on the slag grinding plant integration services for a highly scalable system, launched a new "A vertical mill with eight services" mode, that is, slag grinding plant 2.0 system. 2.0 slag production line system from the initial production line design, color configuration to the vertical mill technology and environmental protection and other aspects greatly improved.
"8 Service" do customer projects housekeeper
CHAENG "TA vertical mill with eight services" comprising: Rmaterial testing,Programme design,Equipment manufacturing,Install,Debugging,Technical training,Standard production,Production contract eight aspects.From the project to the final pre-production, CHAENG to provide full guidance and equipment for main and auxiliary processing production, the maximum to meet your sourcing needs integrated, truly allows you to choose rest assured that the use of peace of mind, Service pleasant.

"Blue Lake" image representative of the CHAENG new green card
CHAENG ore line 2.0 system, the production line from the original primary colors red, gray, blue lake updates.
On the one hand, pure Acqua contains innovative features and calm, on behalf of CHAENG Technology , efficient product brand and corporate image steady thick.
On the other hand, it is as blue lake blue lake in general, but also contains the CHAENG concept of sustainable development. CHAENG in production and sales of each system is conducive to promoting the production, lifestyles and consumption patterns of resource conservation and environmental protection, and promote economic and social development and natural resources and the environment.

PI：slag grinding system components

Upgraded Listing intelligent vertical mill more energy efficient equipment
50 years in the field of grinding, CHAENG adhering to the "technology world, the Great Wall wisdom made" business philosophy has always been to product development and technological innovation as a top priority, ongoing optimization and upgrading of vertical mill system. The CHAENG and Henan University of Science and Technology and research institutes to establish a "research" base, developed to meet the current environmental policy development stand mill products, not only to improve the grinding efficiency, but also significantly reduce the energy consumption of grinding, won a good market reaction.

PI：Vertical mill structure principle

Applications
November 2015, the CHAENG and India Nisuke Steel Group concluded a successful annual output of 300,000 tons of nickel slag powder production line turnkey project contract, the production line used in the program is the CHAENG 2.0 new upgrade system. The project is currently being designed, civil engineering and equipment manufacturing stage, is expected in July 2016 formally put into operation.

PI：Su Steel 300,000 tons of iron slag powder production line project renderings

CHAENG to build the domestic first-class grinding system integrated service provider brand, adhere to the "customer satisfaction is our eternal pursuit of" business philosophy, we will continue to increase the vertical integration of mining industry chain, to provide more comprehensive one-stop total service solution program for customers to create more wealth!

Steel Casting Manufacturing and Internet integration is the trend of modern industry

 On May 4 State Council executive meeting,the Prime Minister again mentioned " 'Internet +' is the 'Made in China 2025' important support to promote the integration and development of the foundry industry and the Internet."
The meeting stressed the need to promote the depth of integration of the foundry industry and the Internet to speed up the "Made in China" upgrade.
The Prime Minister said "We 'Internet +' process of development, e-commerce is indeed walking in the forefront of the world, but in the foundry industry, use of the Internet, we still need to speed up the pace." "China is already a major industrial country, but from the industrial powers there are no small distance, which need to expedite the implementation of the foundry industry and the Internet depth integration process. "
At the meeting, the Prime Minister cites the example of Germany and the United States. "Germany 'Industry 4.0' mainly 'foundry industry + Internet', while the US is more 'Internet + foundry industry'. Although each other, and the path is not the same, but they are to enhance the level of the foundry industry." Li said "both have their own characteristics. we want to move industrial powers, it is necessary to absorb more experience in these two areas."
The Prime Minister also referred to the previous study, discussion of several examples: Haier become entrepreneurs by creating a platform for large enterprise employees; total nuclear "Hualong One," the core design, gathered via the Internet in more than 20 cities power more than 500 terminals, thousands of people focus on research.
"A feature of the Internet is a great 'collection Trimaran' through the Internet to find a solution in the world, you can save a lot of manpower and intelligence." Li said, "This is the only way of modern industrial development."
He stressed that to promote the innovation and development of the foundry industry innovation requires not only large enterprises, large enterprises and SMEs also need collaborative innovation. Local governments should support manufacturing enterprises to build Internet-based "double hit" platform, based on the national new industrialization demonstration base construction and national economic and technological development zone "double hit" demonstration bases. Telecommunications companies want to "double hit" base speed broadband access to further reduce costs.

Big data about use of the Internet to change the traditional casting industry, Li Keqiang to suit version Chinese garment industry to use an example that in the past Japan is not in Europe, has not come up with their own version, since a data collection by a very difficult . Big Data now provides a new path. Jiangsu, a clothing business two or three years ago, has accumulated more than 200 million version of the type of data. With big data, we can support customization basic version above.

"Relying on big data and other Internet technology, enterprise innovation level of the traditional casting industry has been significantly improved." Prime Minister said.