Cement Grinding Process

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Cement Grinding Process

Cement grinding process description

Cement grinding process is one of the important steps in the cement production line. In this cement grinding process, we need to grind limestone, coal, gypsum and clinker into powder by cement grinding equipments. And there are two ways of grinding:

Wet cement grinding process: raw material is proportioned to meet a desired chemical composition and fed to a rotating ball mill with water. The raw materials are ground to a size where the majority of the materials are less than 75 microns. Materials exiting the cement mill are called "slurry" and have flow ability characteristics. This slurry is pumped to blending tanks and homogenized to insure the chemical composition of the slurry is correct. Following the homogenization cement process, the slurry is stored in tanks until required.

Dry cement grinding process: raw material is proportioned to meet a desired chemical composition and fed to either a ball mill or vertical roller mill. The raw materials are dried with waste process gases and ground to a size where the majority of the materials are less than 75 microns. The dry materials exiting either type of cement mill are called "kiln feed". The kiln feed is pneumatically blended to insure the chemical composition of the kiln feed is well homogenized and then stored in silos until required.

Some ways to increase the Cement grinding efficiency

1. To enhance the ventilation of mill to improve the surroundings of mills to enhance the ventilation of mill is the effective methods to increase the production capacity and to reduce the power consumption.

2. To adopt the new type scale board to improve the material of the mill parts. The new type easy grind ability spare parts are widely used now days for prolong the service life of parts and grinding media.

3. To add grinding aid to increase the grinding efficiency there have many kinds of grinding aid, most of them are organic surface-active material. Some research has shown the grinding aid of ethanol, butanol, butanol oil, and coalmine work out fine.

4. To reduce the temperature of cement to improve the quality of cement High temperature will cause the dehydrate gypsum dewatering in cement processing, which will make cement false setting and material cementation.

Cement Processing Equipment

In the cement manufacturing plant, not only the crushing machinery, but also the grinding machine is used as cement machinery.

Stone Crusher: Limestone crusher Limestone is the main raw materials for making cement, so we need the limestone crusher to crush limestone to small particle sizes to make cement.

Raw mill: it is used to crush limestone particles and additive materials

Cement mill: They are used to grind cement clinker into powder to make cement.