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about the process of mixing and grinding of cement

about the process of mixing and grinding of cement

PortlandCementis made primarily from a combination of a calcareous material, such as limestone or chalk, and of silica and alumina found as clay or shale.The manufacturingprocessconsists essentially ofgrindingthe raw materials into a very fine powder,mixingthem intimately in a predetermined proportion, and burning them in a large rotary kiln at a temperature of about …

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