cement raw material ball mill

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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.

vertical raw mill for cement raw meal grinding in cement factory

vertical raw mill for cement raw meal grinding in cement factory

Applications: It can be used for grinding limestone, gypsum, siliceous, coal and other materials. It is mainly used in cement raw materials grinding section of cement factory, and also be used in concrete and mineral fields.

Vertical raw mill is important equipment widely used in the cement raw meal (cementraw materials) grinding section of the cement production process in cement plant. Because the vertical raw mill is the use of roller grinding principle to crush materials, its vertical raw mill operation is more efficient and energy-saving, product output is more stable, so in cement industry, electric power, metallurgy, chemical industry, metal, and non-metal ore industry is also well used.

Vertical raw mill is widely used in cement industry. In the process of cement production in cement plant, cement raw meal needs to be ground by grinding equipment before calcination. Cement raw meal includes limestone, gypsum, silica, clay, fly ash and other components. Because these materials are mixed together and have special properties, so there is a high requirement for the material suitability of the grinding equipment. The vertical raw mill operation process is simple, the floor space is small, the noise is low, the dust is less, and the adaptability to different materials is strong. So the vertical raw mill particularly suitable for the grinding of cement raw meal in cement factory. The vertical raw mill in cement industry has been applied in the field of medicine and food because of its high grinding efficiency, can dry up to 10% moisture materials and energy saving of 20% 30% compared withball millof the same scale.

As a ball mills supplier with 22 years of experience in the grinding industry, we can provide customers with types of ball mill, vertical mill, rod mill and AG/SAG mill for grinding in a variety of industries and materials.

cement raw mill in cement plant for cement raw meal grinding

cement raw mill in cement plant for cement raw meal grinding

Applications: It widely used in cement production, silicate products, new building materials, ferrous and nonferrous metal processing, electric power, ceramics and other industries of material grinding.

Raw mill is also called cement raw mill, similar tocement ball mill, it is an importantcement milling equipment used in the cement production process.Raw mill is mainly used for grinding cement raw meal in the cement factory production process. It is also suitable for metallurgical, chemical, electric power and other industrial mining enterprises to grind various ores and other grindable materials.

Cement raw meal is a mixture of various raw materials before cement calcination. It is a mixture of lime raw material (mainly composed of calcium carbonate), clay raw material (aluminosilicate containing alkali and alkali soil) and a small amount of calibration raw material in a certain proportion and ground to a certain fineness. In order to meet the success of the subsequent calcination process, the grinding of the raw meal must be uniform in fineness and ensure the chemical composition of the mixture is stable.

Raw mill in cement plant is very suitable for cement raw meal grinding because of its strong adaptability to raw materials and adjustable grinding fineness. It is the most commonly used grinding machine in the grinding stage of raw materials in the cement plant.

The cement raw mill is generally cylindrical in the horizontal direction, and gears are driven at both ends. After the motor is turned on, the cylinder is rotated. Raw materials are evenly fed into the first inner silo from the feed port at one end. The inner wall of the silo is provided with a step liner or a corrugated liner, and steel balls of different specifications are installed inside as the grinding media.

When the raw material grinding process starts, with the rotation of the cylinder body, the steel balls and materials are brought to a certain height and then fall down, so that the reciprocating cycle can produce impact and grind on the materials. Material is ground at the primary stage in the first inner silo to achieve rough grinding size. After that, the material passes through the single-layer partition board to enter the second inner silo for further grinding.

The inner wall of the second inner silo is a flat liner plate. The number of steel balls is more and the size is smaller than that of the first inner silo. The grinding of materials is more sufficient. In the raw mill grinding process, the grinding material is discharged from the grinder through the discharge hole, and the fineness of the qualified material is sorted by the sorting equipment, while the fineness of the unqualified material is sent back to the cement raw mill by the sorting machine. And unqualified material will be ground until the fineness meets the requirements.

As a ball mills supplier with 22 years of experience in the grinding industry, we can provide customers with types of ball mill, vertical mill, rod mill and AG/SAG mill for grinding in a variety of industries and materials.

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