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nature : a limestone and clay as raw material, according to a proper ratio raw material preparation, very badly burned part or all of melting and cooling obtained by the semi-finished products. In the cement industry, the most commonly used Portland cement clinker main chemical ingredients of calcium oxide, silica and alumina and a small amount of iron oxide. Major mineral composition of the three calcium silicate, calcium silicate, calcium aluminate three and four FERRITEALUMINATE acid calcium. Portland cement clinker modest increase in gypsum common Ground, evaporates portland cement.
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