FIELD: industry of building materials. SUBSTANCE: clinker is milled jointly with gypsum and fractionated ash in tubular mill with ball-type milling members. The ash fractions, mm, are: 0.-025; 0.25-0.5; 0.5-1.0; 1.0-10. The relation of total fraction 0-0.25 to total fraction 0.5-1.0 , 1.0-10 is 3: 1. EFFECT: economy of clinker and improved granulometric composition of cement. 4 tbl
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