slag power production line​ rate of return on investment

As the important equivalent substitutes for cement production, slag powder 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."

　　Also, Great Wall Machinery has constructed the first 600,000 t/a slag grinding line in this industry, with a waste slag (like blast furnace slag, Steel slag and nickel slag) analysis center .With the rich industry experience and advanced technology, Great Wall Machinery can provide the qualified turnkey service from research report, raw materials analysis, designing, equipment manufacturing, civil construction, installation, test and training.

　　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:

　　Suggestions for the equipment selection

　　Great Wall Machinery already has more than more than 100 customers recently, among them, the capacity of 1 million t/a, 600,000 t/a and 300,000 t/a has occupied more than 80%. Below sheet has show the main equipment specs and parameters of these three capacities.

　　

　　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.

October major benefits, focusing on the Great Wall

For today's casting industry, the environment of global economic weakness and weak industry under the influence of the situation, fight a protracted war industry, has become many casting expert future preparing strategies.

　　Under the background of global economic situation is weaker, every movement of the Great Wall steel casting will be closely watched. Recently, the Great Wall steel casting godd news continuously, large steel casting orders, never stopped. Walk in a large modern foundry, look up, one large steel product is under workshop worker's hand in the final stages of processing. According to understand, although in the casting industry under the weak environment of the downturn, but is still a busy scene foundry of Great Wall steel casting , each group workshop workers are necessarily up orderly production work.

　　In recent years, the Great Wall steel casting pursuit of excellence, adhere to market-oriented, customer-focused business philosophy has been deeply rooted in the hearts of the people, in a deep-going way and ensuring the quality, the service concept of service quality, the purpose of the Great Wall steel casting is only one, that is to create greater value for customers, providing customers with the most rapid, effective and high quality brand service.

　　It is worth mentioning that many clients at the Great Wall steel casting after had a pleasant cooperation experience, is convinced by good services and first-class product quality of great wall steel casting, the second time and many times do not hesitate to chooselarge steel castings from the great Wall steel casting , such as the world's largest iron and steel group, Mittal group, the world first-classvertical grinding machine manufacturers - Denmark Smith has repeatedly to buy large steel products from the great Wall steel casting .The typical cases of secondary cooperation and long-term cooperation, have proved that the Great Wall of large steel products has been deeply rooted in the hearts of the people.

　　Whether the development strategy of "One Belt And One Road" or "made in China 2025" strategic policy Issued and implemented, suggests a direction of sustainable development: China's equipment manufacturing industry in the face of the challenge at the same time, also usher in a new development opportunities and business opportunities. As a large-scale steel product solution provider, the Great Wall steel casting in pay attention to product quality and service at the same time, relying on emerging Internet power, upstream, break through the downturn and surrounded by weak economic environment, prepared to layout the global strategy.

　　The Great Wall steel casting do every effort and reform , means the Great Wall steel casting in the direction of the victory, and made a solid pace, Great Wall steel casting various efforts also signal to the world, the Great Wall steel casting has made adequate preparation, in the coming days, play it a beautiful and lasting business battle.

The prices for investment slag vertical mill production line how much money

As a cement substitute an equal amount of production is important - slag powder can significantly improve the overall performance of concrete and cement products, as well as a significant reduction in cement, concrete production costs, now as a new high performance cement and concrete admixtures are Applications in cement plants, grinding plants, steel mills, has formed a "investment who should benefit whoever" situation.

　　Great Wall Machinery can undertake an annual output of 20-150 tons of slag / slag / nickel slag / manganese slag powder production line project EPC general contracting services, until now, the Great Wall machinery has been successfully established in more than 100 slag vertical mill production lines outside China.

　　In addition, the Great Wall of China machinery industry has an annual output of 600,000 tons the first demonstration training base slag powder machine and industrial waste (slag, slag, nickel slag) R & D center, extensive industry experience and strong technical capability enables mechanical energy provided from the Great Wall scientific reports, raw materials testing, engineering design, equipment manufacturing, construction, installation, commissioning, staff training, production standards, one-stop "turnkey" service.

　　The slag line ROI display:

　　Xinxiang Great Wall Machinery 600,000 tons vertical roller mill production line, for example, the total investment of 50 million yuan, in April 2011 and put into production, it is already two years to recover all the investment cost of equipment, is currently in a state of pure profit. Specific costing, please refer to the following table:

　　Great Wall Machinery slag vertical mill resolve unique advantages:

　　1. The introduction of the German Loesche vertical mill technology, technology system is simple.

　　2. equipment operation rate, energy saving and environmental protection.

　　3. The system is easy to operate, save a lot of labor costs.

　　Picture: Great Wall Machinery slag mill stand intelligent operating system, real-time manufacturing operations risks that exist to monitor and adjust

      Slag vertical mill process

　　Slag piled up by a forklift reclaimer, feeding, conveyed by belt conveyor. In the delivery process, the slag material has received iron and sieved through a separator and a shaker, and then weighing equipment warehouse, hoist into the vertical mill grinding. After slag grinding by means of hot air stove provided, were selected by the powder separator, at the same time get dry. In line with the required fineness slag powder it was finally delivered to the precipitator to collect, after full bloom, the air delivery chute, hoist into the finished products in storage.

　　To ensure that customers throughout the project successfully conducted and completed, the Great Wall machinery pioneered the industry's first "Taiwan vertical mill, eight service" value-added solutions, from pre-project to the final production, the Great Wall machinery to provide full guidance.

Lay the cement plant energy conservation and emissions reduction to be completed

Referred to the cement industry, many people will think of pollution. Nowadays,  energy conservation of cement industry is most important than any one thing. And now that is the common focus of the whole society. In March 1, 2014, the most severe of "air pollutant emission standards Cement Industry" officially began to carry out, and at the same time the competent authorities have issued the "2014-2015 energy saving technology special action plan" and "2014- 2015 energy saving low-carbon development action plan ".All levels of government have been put on specific targets, energy conservation. The situation of cement industry is increasingly grim. For cement companies should change from passive to active, in accordance with the requirements of the standard and plan in advance,actively promote.

It is reported that the power consumption of cement grinding accounted for 60% -70% of the total power consumption during cement production.Energy saving of cement grinding equipment became the key to the industry standards. The industry have called for reform of the new cement grinding equipment.As the industry recognized high energy "boss", ball mill will be eliminated, while the cement vertical mill and roller press grinding system will undoubtedly become the focus of the industry.

In order to understand differents between the cement vertical mill grinding system and roller press grinding system, which one is more energy efficient and most benifit? We came to the well-known supplier of grinding system integration - Great Wall Machinery, deputy general manager of Great Wall Machinery Company Qiaozhi explained for us.

Qiao said, compared with the joint roller press grinding system, cement vertical mill is used in many foreign cement production line with obviously energy-saving effect and smoothly easy operation. Its good use results has been reconizedin  2009 Toure SAF international conference: vertical roller mill is an advanced, economical and practical cement finish grinding equipment.

Due to technical limitations and lack of understanding, only part of the cement companies have a try. According to the data in the actual production of these companies, we obtain:

Power consumption, the roller press + ball joint grinding system power consumption is 30 ~ 35kWh / t, roller mill finish grinding system 25 ~ 30kWh / t. With an annual output of 1 million tons,  vertical mill system can save power 4 million degrees, the effect is very obvious.

Noise, the roller press + ball mill system noise pollution is always over 100jb.But for vertical mill, it is in the 80-85 decibel range, far below the former and good control the noise pollution.

Dust, ball mill grinding system produce a lot of dust during production, but vertical mill use the fully enclosed design.The set of crushing, drying, grinding, grading conveyor in one, greatly reduce dust emissions.

It is worth mentioning that the cement vertical mill, not only prominent in energy saving but also plays important role in investment costs and the quality of cement:

1, the system of investment, combined with the actual investment budget and manufacturers, although the system invest of ball mill is small,but its later equipment cost are higher, also with the large area, higher construction costs.so for the total cost, the cement vertical roller mill Investment and roll pressure system combined grinding system are nearly same.

2, vertical roller mill for moisture and particle size are superior adaptability than ball mill grinding system.

Thus, cement vertical roller mill system has an absolute advantage.Although now it is not made a wide range of applications, but with the implementation of energy saving and low carbon development policy and cement improve environmental awareness, cement vertical roller mill market will be fully tapped.

Cement is the large energy emissions industry, but our speed of reduce energy consumption should be a big step for five years, one year a small step. The development of the cement industry in the future should translate to higher level, higher technology, higher energy saving development.

How to improve the production of cement mill

　 Cement mill is widely used for cement clinker powder and other materials. l mill is widely used for cement clinker powder and other materials. Energy-efficient is a topic of concern by customers, in reality, there are many factors affect the production of cement mill, as we mentioned below: 

      1.the grinding process: if we don’t consider pre-crushing, grinding process can be divided into open and closed process flow, under the same conditions, output of the the latter was about 20% -30% than the former, wet new standard requires screening residue of cement mill product sieve over a greatly reduced, circuit grinding of cement also requires a high surface area,Therefore, a high open circuit grinding cement strength advantage is not so obvious, recommended by the conditions Cement, try using the circuit grinding process, to avoid the phenomenon of over-grinding of open flow, but also to ensure the mill Energy-efficient.　　2.Water content: water directly affects the material standard ingredients and mill output and power consumption, first of all, due to the impact of feed material moisture uniformity, Material moisture high caused unevenand feeding, and second of all, because of the wet material is fed too much, it may cause the ball mill paste, paste liner occurs, even "full mill 'was forced to stop turning, in general, into the mill material integrated water every 1% increase in mill output will reduced by 8% to 10%, when the water is greater than 5%, dry grinding mill will not be working.

　　3.the size of materials: dry grinding mill due to the material energy utilization rate is only 2% to 3%, so it should be 'more broken less ground, with ground-breaking' pre-meal process, so that a substantial increase in production mill, powder grinding power consumption decreased significantly better yield energy savings.

　　4.Finished grinding surface area requirements: Whether raw material grinding or cement grinding, fineness of the finished product is different , yield of grinding also totally different

Affecting Factors to Lifespan of Vertical Roller Mill

Building material market is booming with urbanization development, and that also leads to the development of vertical roller mill. Vertical roller mill, as a kind of high-efficiency energy-saving environment protection equipment, is more and more popular with more customers and has gradually replaced traditional ball mill.

　　Study proves that high quality mill and correct operation is key to prolong the service lifespan of vertical roller mill, also to increase its grinding efficiency. So, how to prolong its service lifespan?

　　Firstly, material hardness and content is important.

　　Different materials with different hardness and contents will cause different abrasions of grinding roller, grinding table, and liners, therefore, appropriate selection of material can effectively increase the service lifespan of vertical roller mill.

　　Second, material feeding status is also important.

　　Feeding evenly is an important factor to guarantee normal operation of vertical roller mill, if there is no configuration of feeding equipment for production line, there will be plugging material. Uneven feeding will press much pressure on grinding roller, and cause abrasion directly, thus reducing service lifespan of mill.

　　Finally, it is technicians’ correct operation and maintenance.

　　Generally speaking, if the worker do not know about the machine, it is difficult to operate and maintain it, and this will cause the low production efficiency. Therefore, there must be professional and technical personnel to operate it, to perform correct sequence. When starting it, he should first start the blower, then start the main machine. When stopping it, he should first stop the main machine, then stop the blower. A series of problem including electrical short circuit, will be caused if the operator does not obey the correct sequence.

　　Vertical mill equipment is efficient or not is fundamental to production benefit, therefore, vertical roller mill is pivotal in an engineering project. To choose a good vertical roller mill means to choose a good start.

　　Xinxiang Great Wall Machinery has been dedicated to manufacturing vertical mill for more than 50 years, including Research & Development, manufacturing, sales and service, and pays much attention to improve mill quality and meet customers’ requirements. The grinding roller, grinding table and liners, with long-term contact with feeding material, are main wearing parts. The vertical roller mill manufacturers pays special attention to improve wear resistance to improve lifespan of vertical will, the Great Wall Machinery has great superiority in this respect with its large cast steel base, large machining workshop, electric control workshop, thus ensures qualified large parts of mill. This can not only ensure the production quality, production process but also solve vertical mill repair problem.

The China's largest manufacturer of rotary kiln - diameter 4000 how much is the rotary kiln

Recently, the Great Wall of xinxiang machinery Co., Ltd. and guangxi huayan source material Co., Ltd. formally signed the first phase of the annual output of 400000 tons of nanometer calcium carbonate production line φ4.0 × 60m rotary kiln purchase contract.The cooperation with the success of the guangxi huayan source marks the launch of the Great Wall machinery upgraded rotary kiln kiln grinding equipment for the company sales have played an important role in the icing on the cake.

　　It is understood that the Great Wall Machinery has 50 years of practical experience in the production of large rotary kiln, in order to keep up with international technology trends, improve the technological level and the level of competitiveness, the Great Wall machinery launched an upgraded limekiln, won the majority of customers.Compared with traditional rotary kiln products, Great Wall machinery upgraded rotary kiln has "taller, bigger, more environmentally friendly,"the advantages:

　　First , the higher: because the material in the kiln even rolling forward, heat evenly, stable product quality, hygiene, burn rate is too low, a high degree of activity can be calcined lime, lime and its degree of activity under the same conditions, the lime production above the shaft kiln, the average high 30ml, activity of up to 400ml, or even higher.

　　Second, the greater: lime kiln production is high , the Great Wall machinery has built a lot of 150 - 1200 t/d of lime kiln production line is applied to medium and small building materials enterprise, operating in good condition, the production of φ4.8 × 74 rotary kiln to become the China's largest Specifications kiln.

　　Third, more environmentally friendly : the Great Wall machinery kiln belongs to open wide type calcine, high-tech production process, the kiln body structure is simple, air flow, sulfur smoke gas can be discharged, and sulfur in the fuel is not easy to adhere to, so product is low in sulfur and desulfurization efficiency is as high as 85%.

　　As the leading manufacturer of lime - he Great Wall machinery can provide customers with a diameter of 3.2 - 4.8 m of various specifications of the rotary kiln equipment to meet 1200t/d less lime production needs , and can provide the design, manufacture, installation , to commissioning, production of one-stop "turnkey" services to ensure that customers can achieve production in a very short time . to achieve mutual benefit and win-win with customers.