Raw mixture for the production of cement

Abstract

A raw mixture for the production of cement consisting of calcareous, aluminous, silicaceous, ferrous, magnesium-containing components and calcium chloride; said components being contained in the raw mixture in the following proportions, per cent by weight: ______________________________________ calcareous component (calculated for CaO) 30 to 42.3 silicaceous component (calculated for SiO.sub.2) 12.5 to 17.5 aluminous component (calculated for Al.sub.2 O.sub.3) 1.6 to 12.4 ferrous component (calculated for Fe.sub.2 O.sub.3) 0.6 to 4.4 magnesium-containing component (calculated for MgO) 1.5 to 8 calcium chloride 6 to 20 losses at calcination the balance. ______________________________________ The above composition makes it possible to perform calcination of the raw mixture at substantially lower temperatures (within the range of from 1,000.degree. to 1,100.degree. C) and to obtain cement possessing a higher activity.

Dependencies are inferred from the claim text.