PROCESS FOR PREPARATION OF GYPSUM BINDING AGENT

摘要

A process for preparation of gypsum binding agent comprises use of half-aqueous gypsum of ?-modification obtained by preparation of gypsum raw material, partial dehydration thereof in open apparatuses connected to atmosphere at the temperature of 140...180 DEGREE C, and mixing obtained gypsum of ?-modification with complex additive mixing is carried out by common milling of gypsum of ?-modification with complex additive in ball mills. The complexadditive consists of quicklime at an amount of 1.5...2.5 % and hyperplastifier of polycarbonate component at an amount of 0.5...0.7 % of binding agent mass.