Zhengzhou high tech Zone, China[email protected]
Nov 15, 2016018332Manufacture of Portland cement. Raw materials Calcareous material such as limestone or chalk, as a source of lime CaO. Clayey material such as clay or shale soft clayey stones, as a source of silica and alumina. Methods of cement manufacturing. Wet process Grinding and mixing of the raw materials in the existence of water.
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