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Raw materials. As raw materials for manufacture klinkera limestones with the high maintenance of carbonic calcium (a chalk, dense limestone, mergeli, etc.) and clay breeds (clay, clay slates), containing SiO2, A12O3 and Fe2O3 serve. On the average on 1 t cement it is spent nearby 1,5 t mineral raw materials; an approximate parity between karbonatnym and clay components of a raw mix 3:1 (i.e. Undertakes about 75% of limestone and 25% of clay).
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