The main raw materials used in the cement manufacturing process are limestone, clay, sand, and shale and iron ore. Cement Clinker's Wet Process:
1. In the wet process, each raw material is proportioned to meet a desired chemical composition and fed to a rotating ball mill with water.
2. The raw materials are ground to a size where the majority of the materials are less than 75 microns.
3. This slurry is pumped to blending tanks and homogenized to insure the chemical composition of the slurry is correct.
4. Following the homogenization process, the slurry is stored in tanks until required.
1. In the dry process, each raw material is proportioned to meet a desired chemical composition and fed to either a rotating ball mill or vertical roller mill.
2. 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.
3. 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.
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