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raw mill, cement raw mill, raw mill in cement plant | cement equipment

raw mill, cement raw mill, raw mill in cement plant | cement equipment

Raw mill is generally called cement raw mill, raw mill in cement plant, it refers to a common type of cement equipment in the cement plant. In the cement manufacturing process, raw mill in cement plant grind cement raw materials into the raw mix, and the raw mix is sent to the cement kiln to make cement clinker, next, clinker and other admixtures will be ground into finished cement by cement mill.

As for the type of raw mill, there are two types including cement ball mill and vertical cement mill. In the traditional cement raw mill system, the cement ball mill system is more typical. After technology modification, the vertical cement mill has obvious advantages compared with the cement ball mill, and it is suitable for the large cement production line.

AGICO CEMENT is a raw mill manufacturer from china who has the ability to manufacture cement ball mill and vertical cement mill. As a leading and trusted manufacturer, we had exported many projects of cement raw mill and cement equipment to the countries or regions around the world. Why AGICO CEMENT is popular?

Vertica raw mill, also known as vertical roller mill, in the 1920s, the first vertical raw mill in cement plant is designed in German. It is widely used in cement, electric power, metallurgy, chemical industry, and other industries.

Low investment: the vertical raw mill set crushing, drying, grinding, grading transportation in one, simple system, compact layout, less space, it also can be arranged in the open air, save a lot of investment costs.Low operation cost: small energy consumption and less damage reduce the running cost.Environment protection and clean: small vibration, low noise, and good sealing, the system works under negative pressure, no dust overflow.Stable quality of raw mix: because the material stays in the raw mill for a short time, it is easy to detect and control the product size and chemical composition, reduce repeated grinding, and stabilize the product quality.

The main motor drives a millstone by rotational speed reducer, at the same time the wind enters into the raw mill from the air inlet, material through the screw feeder fell in the middle of the raw mill, under the action of centrifugal force, the raw materials move uniformly from central to the edge of the millstone, the materials will be ground by the roller when it passes through the grinding roller way, large materials are directly crushed. Crushed material continues to move to mill edge, until being taken away by the wind ring in strong turbulence, and larger particles material again fell to the mill to continue to crush, the flow of materials through the upper part of the separator, in the effect of separator blade, coarse particle back to the grinding mill, qualified fine powder with airflow is out of the raw mill, and collected by the powder collection.

The cement ball mill usually can be applied to raw meal grinding or cement grinding. Besides, the cement ball mill also can be used for metallurgical, chemical, electric power, other mining powder grinding, and other grindable materials.

Safe and reliable system: the maintenance of the reduction gear and gear is more convenient, firm and wear-resistant, and also reduces the downtime, maintenance time and the labor intensity of the operators.

Good wear resistance and long service life: Cement ball mill adopts the high-quality wear-resisting material, and the lining can be removed, therefore the service life of the equipment or vulnerable part is all longer.

The main working part of cement ball mill occurred in the low-speed rotary cylinder, when the cylinder is drove to rotary, grinding medium is attached on the liner to rotary together due to the effect of inertial centrifugal force, and taken to a certain height, freely fall because of gravity, grinding medium break the materials in the cylinder body, at the same time the grinding body in the rotary raw mill have circular motion, also can produce sliding and rolling, which result in grinding among the grinding medium, liner, and materials. When the material is crushed and ground by impact, the material flows slowly from the feeding end to the discharging end to finish the grinding operation.

The raw mill is a kind of necessary cement equipment in the cement plant. In the real working condition, but the large configuration will produce a bad effect on the cement plant, so it is very important to set a reasonable configuration of the raw mill. There are five reasons why we control the configuration of the raw mill in cement plant:

Composition fluctuation of the raw meal: The frequently start-stop of a raw mill will bring different degrees of influence on the quality, whether it is the cement ball mill, the vertical cement mill or the cement roller press system.

cement vertical mill - vertical grinding mill - vertical mill | agico

cement vertical mill - vertical grinding mill - vertical mill | agico

The cement vertical mill is a grinding equipment developed on the basis of similar grinding mills, so it has many irreplaceable advantages, such as high grinding efficiency, low power consumption (20-30% less power than ball mill), large drying capacity (simultaneously dry and grind materials with moisture up to 10%), large particle size of grinding materials, simple grinding process, small floor area, low noise and wear, long life and other advantages. This kind of machine uses a hydraulic system to make the pressure act on the material between the roller and the grinding disc, so as to achieve the purpose of grinding. AGICO, as a cement equipment manufacturer in China, supports high-quality coal vertical mill, raw material vertical mill, and thecement vertical mill.

The cement vertical mill consists of a classifier, upper housing, access door, feeding port, transmission device, roller, pull rod, balk ring, grinding table, air ducting ring, swinging arm, gearbox, hydraulic system, etc.

AGICO Group is an integrative enterprise group. It is a Chinese company that specialized in manufacturing and exporting cement plants and cement equipment, providing the turnkey project from project design, equipment installation and equipment commissioning to equipment maintenance.

leading supplier of cement plant equipments - rotary kiln|crusher|preheater

leading supplier of cement plant equipments - rotary kiln|crusher|preheater

AGICO is specialized in design and supplies equipments for complete cement production lines of different scales, capacity from 300 to above 2500TPD; Main equipments include: rotary kiln, grinding equipment(ball mill and vertical mill), crusherJaw Crusher, Impact Crusher, Hammer Crusher, cooler(Rotary Cooler), preheater(Cyclone Preheater), dust collector, conveyor equipments, etc. The Production method usually adopts advanced dry process cement production technology. independent production, independent development, manufacturing, installation and commissioning, product sales and technical services with an annual production capacity of 100,000 tons.

The cement rotary kiln is a cylindrical body with a certain inclination, and the inclination is 3 to 3.5%. The rotation of the kiln is used to promote the stirring of the material in the rotary kiln, and the materials are mixed and contacted for react...

Applications: Mainly used in grinding operations in mining, cement, refractory, chemical and other industries. Materials: Mine ball mills are divided into dry and wet, dry type for refractory materials, cement, fertilizer, glass industry; w...

Scope of application: In the cement industry production, in order to improve the efficiency of the grinding system and reduce the energy consumption of the product, a circulating grinding system is now widely used. As an important part of t...

The Rotary Cooler produced by our company is often used to cool the kiln clinker of the 500-2000t/d production line because of its simple structure, high thermal efficiency, low maintenance cost, low equipment investment and high operating efficiency....

Introduction: The cyclone preheater is the core equipment of the new dry process cement production technology. It uses the suspension preheating method to preheat and partially decompose the raw material to shorten the length of the rotary...

In recent years, with the improvement of large-scale cloth bag dust collecting technology in China, the long bag dust collector technology used in rotary kiln tail gas treatment of cement rotary kiln with dry process method is increasing da...

Cyclone preheater is one of the core equipment in the new dry cement production process, which is responsible for many functions such as gas-solid dispersion, material heating, gas-solid separation, material transportation and some physical...

cement mill - cement grinding machine | agico cement grinding mill

cement mill - cement grinding machine | agico cement grinding mill

In the cement production process, the main functions of grinding equipment are grinding cement raw materials, cement clinker and coal for calcination. As one of the cement equipment suppliers in China, AGICO offers different types of cement mill which can be used as raw mill, cement grinding mill and coal mill. As the main cement equipment, they are respectively used in different stages of cement manufacturing.

Raw mill is the grinding equipment applied in the raw material preparation process. In the wet process of cement production, raw materials should be ground into raw slurry with a water content of 30% 40%. While in the dry process of cement production, they will be ground into dry powder in cement raw mill.

Coal mill is the main equipment in thepulverized coalpreparation process. Because calcining top-grade cement clinker requires a stable supply of coal powder as the fuel of cement kiln, and more than 85% of pulverized coal should be finer than 200 mesh, water content less than 2%, and calorific value more than 6000Kcal/kg,therefore the pulverized coal preparation system is one of the important links to ensure cement production.

Cement grinding mill is usually used in the clinker grinding process. It is the final stage in cement production which will directly affect the cement product quality, output and benefits. Clinker particles, gypsum, and other materials in cement grinding machine will be ground together into fine powder to match the fineness of the finished product.

The cement grinding mill in a cement plant mainly includes cement vertical mill, cement ball mill, ultra fine grinding mill, cement roller press, etc. They are suitable for both wet process and dry process.

AGICO offers EPC cement projects and different kinds of equipment needed for cement plant, such as a series of cement mills: cement ball mill, rod mill, cement vertical mill, ultra fine grinding mill, cement roller press, Raymond mill, and air swept coal mill.

AGICO Group is an integrative enterprise group. It is a Chinese company that specialized in manufacturing and exporting cement plants and cement equipment, providing the turnkey project from project design, equipment installation and equipment commissioning to equipment maintenance.

cement ball mill - cement grinding machine - cement mill | agico

cement ball mill - cement grinding machine - cement mill | agico

The cement ball mill is a kind of cement grinding mill. It is mainly used for grinding the clinker and raw materials of the cement plant, and also for grinding various ores in metallurgical, chemical and electric power enterprises. It has the characteristics of strong adaptability to materials, continuous production, large crushing ratio and easy to adjust the fineness of grinding products. The cement ball mill can be used not only in dry method cement production line but also in wet method cement production line. In addition, it can realize the simultaneous grinding and drying, which is the important equipment for cement grinding. AGICO is one of the leading cement ball mill manufacturers in China. We supply the high quality equipment. If you are interested, please feel free to contact us.

The materials are uniformly fed into the first chamber of the mill by the feeding device through the feeding hollow shaft. There is a stepped or corrugated liner plate and some steel balls of different specifications in the chamber. The cylinder rotates approximately once every couple of seconds, and the centrifugal force produced when the cylinder rotates brings the steel ball to a certain height and then falls down. This kind of impact force will have a grinding effect on the material. After the kibbling in the first chamber, the materials will enter the second chamber through the monolayer partition board, which is inlaid with a flat liner plate and contains steel balls to further grind the materials. After that, the powder will be discharged through the discharge device.

AGICO Group is an integrative enterprise group. It is a Chinese company that specialized in manufacturing and exporting cement plants and cement equipment, providing the turnkey project from project design, equipment installation and equipment commissioning to equipment maintenance.

cement separator cement mill separator | cyclone air separator in cement plant

cement separator cement mill separator | cyclone air separator in cement plant

Cement separator, also called cement mill separator, is the necessary equipment in the powder classifying system of cement, chemical, mineral, and other industries. It can respectively collect the qualified fine powder and coarse powder from the airflow after they are ground by the grinding equipment to a certain extent. The utilization of cement separator prevents the fine powder from sticking to the grinding media and produces the buffering effect, so as to adjust the size composition of finished products and improve the grinding efficiency.

As a kind of cement equipment, cement separator is mainly used in the coal mill grinding system, raw mill grinding system, and cement mill grinding system of the cement production line. In order to improve the efficiency of these systems and reduce the energy consumption of products, current cement plants generally adopt the closed-circuitgrindingsystem. As an important part, the performance and quality of cement separator will directly affect the grinding system.

There are many types of cement separators, different types suitable for different materials. Besides, different models should also be selected according to the customers requirements for material fineness.

Cyclone air separator is one kind of cement separators. AGICO Cement, as a professional cement equipment supplier in China, offers different models of quality cyclone air separators for any type and size of cement plants, such as JD series cyclone air separator. It is the latest powder separator developed by our companys technicians with the plane eddy theory. Its powder selection efficiency can reach 80-85%. Besides, we also provide other types of cement separators, such as TZX series cement separator, TS series cement separator, and MX series cement separator.

The circulating air of the cement cyclone separator is generated by the air blower. During the powder classifying process, the air is sent by the air blower from the center of the separator in a tangential direction and then spirals up to the classifying chamber. After being ground in the mill, materials are fed through the top feeding port of cyclone air separator and falls onto a rotating spreading plate. Due to the action of inertial centrifugal force, the material is evenly scattered around the spreading plate and meets with the updraft. The finer particles rise to the position of blades with the airflow, among which some of the larger particles sink along the inner cone and enter the coarse powder duct. The smaller particles enter the cyclone with the updraft after passing through the blades and then collected by the centrifugal force. After being separated by the cyclone, the airflow comes out from the air duct and enters the air blower again, thus forming a closed circulation air.

AGICO is a professional cement equipment manufacturer. Cement separator is one of our hot sales products. Compared with the traditional cement separator, the separator produced by AGICO has the following outstanding advantages:

AGICO Group is an integrative enterprise group. It is a Chinese company that specialized in manufacturing and exporting cement plants and cement equipment, providing the turnkey project from project design, equipment installation and equipment commissioning to equipment maintenance.

cement euipment overview | cement making machines | cement plant

cement euipment overview | cement making machines | cement plant

How much do you know the cement equipment? Cement equipment refers to the cement making machines that are applied to the cement manufacturing plant. Before learning the cement equipment, we learn the process of cement manufacturing process first.

In general, we can divide the cement production line into three main steps: raw material preparation of cement, clinker production, and finished cement. Each step has some cement manufacturing machines, such as raw mill, cement crusher, cement mill, cement kiln, cement cooler, cement dryer, cement silo, packing machine, etc.

As we all know, the first step of the cement production line is raw material preparation. Cement crusher is the main equipment of this step. The raw materials are fed into cement crusher by vibratory feeder; the breaking material is transported by the belt conveyor to the impact crusher for further crusher.

There are various types of cement crusher on the market, including jaw crusher, cone crusher, hammer crusher, impact crusher, and etc. AGICO Cement can provide all types of cement crusher. Our cement crusher can fully crush the raw material, reduce feed size into the mill, and increase the reaction of raw material in the following cement manufacturing process, reduce the energy consumption of the whole cement production line.

Cement mill is another necessary cement equipment of the cement plant. After raw material crushing, cement mill plays vital role in the further cement manufacturing process. Cement ball mill, vertical cement mill, and cement roller press are common types of cement grinding plant.

Cement mill has two functions of the cement production line. Firstly, cement mill is used to grind the crushed material into fine size before clinker production. A cement mill is also applied for grinding clinker into finished cement. The cement clinker grinding is the last step of the cement manufacturing process, in this step, cement mill grinds cement clinker, gelatinizing agent and other materials into the required size, which can meet the requirement of cement.

AGICO Cement adopts the advanced internal selection and special compartment device, add the activation device. The grinding tail has a special discharge grate plate, which greatly reduces the size of the grinding media of the grinding bin, greatly improves the grinding efficiency, and achieves the goal of high output and low energy.

Cement kiln is used to make cement clinker, and it is the core equipment of cement production line; usually, apply for dry method cement production. There are two main kinds of cement kiln to manufacture cement clinker. One is the cement rotary kiln, and it is horizontal and can rotate. Rotary kiln is widely applied to the cement clinker production. Another one is vertical and fixed kiln, so it is called as a vertical kiln.

AGICO Cement can manufacture cement rotary kiln with advantages of convenient and reliable operation, stable thermal regulation, and high operation rate. Compared to other rotary kilns on the market, our rotary kiln increase operation rate by 10%, production capacity by 5%-10%, widely apply for cement production line of different countries.

Clinker cooler and dryer are two necessary parts of cement clinker production. The dryer produced by AGICO can apply for various raw materials and easy to adjust. During the operation, the dryer supplies heat stably, ensures the drying quality and cement quality. The cement cooler is also used for clinker production. Using blower blowing cold air, quench the cement clinker that laid on the grate plate, decrease the temperature of clinker from 1200 to 100 and below, the cooling exhaust gas enters into the kiln as secondary air.

In fact, every cement plant requires different cement equipment. Except for the cement equipment we mentioned above, there are many other cement making machines applied for the cement plant. In the real application, as a professional EPC cement plant project provider, AGICO Cement always provides a solution according to clients needs, such as mini cement plant, VSK cement plant. We also provide single cement equipment with high quality and competitive price, welcome to contact!

cement roller press - roller press in cement plant | roller press cement mill

cement roller press - roller press in cement plant | roller press cement mill

The cement roller press is a kind of grinding equipment applied for brittle materials, such as cement clinker, granular blast furnace slag, cement raw materials (limestone, sandstone, shale, etc.), gypsum, coal, quartz sand, iron ore, etc. It is designed according to the principle of bed grinding, the high-pressure load directly acts on the material layer through double rollers, which causes internal stress in particles and leads to cracks to achieve the purpose of grinding.

The cement roller press has a high energy utilization rate and remarkable energy-saving effect in the material grinding process. In cement plant, cement roller press is a kind of important cement equipment used for clinker grinding. It is usually combined with a cement ball mill to form a high-efficiency cement grinding system because the practice shows that the grinding process with small grinding ratio and step-by-step completion is more energy-saving than that with large one-time completion.

Cement ball mill is a main cement grinding mill with a low energy utilization rate (only 3%-5%). Compared with the grinding energy consumption, most of its energy is consumed by collision heating and noise. Therefore, we usually adopt the cement roller press to replace the fine crushing and coarse grinding role of the ball mill. This increases the output of the ball mill system by 30-50%, and 20-35% of the extruded materials are smaller than 0.08mm, 65-85% are smaller than 2mm. Besides, a large number of cracks will be produced on all extruded materials, which will greatly reduce the energy consumption of materials in the next grinding process.

Pre-grinding system: after the material is pulverized by the roller press, all or part of them with a good extrusion effect will enter the subsequent ball mill for further grinding. This system has the advantages of simple processes, less equipment, wide particle size distribution, and stable cement performance. But because the ground material is not classified, a large number of fine powders are back to the roller press, the power saving range is limited.

Combined grinding system: materials ground by cement roller press are divided into two parts by air classifier: coarse part and fine part. The fine part will enter the ball mill to be further ground into the finished product, the coarse part will return to the roller press to be ground again. Because the cement finished products are all ground by the ball mill, the finished products have wide particle size distribution and the cement performance is stable.

Semi-finishing grinding system: after ground by cement roller press, materials are divided into three parts through an air classifier: coarse, medium and fine, in which the coarse material is returned to roller press for re-grinding, the medium material is put into ball mill for further grinding, and the fine material is directly discharged as the finished cement product. Because the roller press and the ball mill are two completely independent circulation systems, they are easier to operate and control and are more energy saving.

Finish grinding system: this system only includes a cement roller press to complete the grinding of cement clinker. Materials ground by cement roller press are divided into two parts by air classifier: coarse part and fine part. The coarse part will return to the roller press to be ground again and the fine part will be discharged as the cement product.

The cement roller press is composed of two rollers that rotate synchronously in the opposite direction and a set of a hydraulic system. Its main structure includes a press roller system, transmission device, mainframe, hydraulic system, feeding device, and so on.

The two rollers of cement roller press, one is fixed and the other is movable, which are driven by a motor and a reducer to rotate at a relatively low speed. The movable roller bearing seat is connected with the hydraulic system. It can be moved along a horizontal direction to control the gap between the two rollers, while the fixed roller is installed in the inner chamber of the mainframe. When materials enter between the two rollers from above, pressure (50-300Mpa) is transferred to materials by the hydraulic system through oil cylinder, bearing seat, and rollers so that material particle size can be reduced by means of extrusion. After grinding, the fine particles less than 90m account for about 20-30%. At the same time, there are many cracks in the coarse particles. In the process of further grinding, their energy consumption can be greatly reduced.

AGICO is a professional cement plant equipment supplier in China. The cement roller press is one of our hot-sales products in the cement grinding unit. Compared with other cement mills, the roller press produced by AGICO has the following advantages:

Cement ball mill and cement roller press are both the commonly used equipment for clinker grinding. But in the actual cement production process, the roller press has more advantages in different aspects, mainly reflected in the following points:

AGICO Group is an integrative enterprise group. It is a Chinese company that specialized in manufacturing and exporting cement plants and cement equipment, providing the turnkey project from project design, equipment installation and equipment commissioning to equipment maintenance.

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