METHOD FOR PRODUCTION OF GYPSUM BINDER Russian patent published in 1996 - IPC

Abstract RU 2070169 C1

FIELD: building materials production. SUBSTANCE: into uncooled acid waste of production of hydrofluoric acid additives are added (their quantities being 5-20 mass % of total weight of the mixture). Then dry neutralization of sulfuric acid with the help of lime-containing agent simultaneously with its grinding in ball mill is carried out. EFFECT: improves efficiency of the method, increases content of α- hemihydrate of calcium sulfate in desired product. 1 tbl

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RU 2 070 169 C1

Authors

Gashkova V.I.

Trojan N.V.

Dates

1996-12-10—Published

1992-08-17—Filed