FIELD: anhydrite binder.
SUBSTANCE: anhydrite binder, a method for producing anhydrite binder from gypsum sludge, and the use of anhydrite binder. Anhydrite binder is a product of joint grinding of treated gypsum sludge and additives-activators, containing, in % by weight: 98.5 to 99.5 treated gypsum sludge, 0.5 to 1.5 additives-activators, while the treated gypsum sludge is obtained by heat treatment of gypsum sludge at a temperature of from 350 to 400ºС, and the gypsum sludge contains from 30 to 55% by weight of sulphate-ions, from 2 to 15% by weight of calcium ions, the rest is moisture.
EFFECT: obtaining an anhydrite binder, characterized by an increased value of the coefficient of constructive quality in comparison with binders obtained by background methods with background technologies.
6 cl, 3 tbl
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