FIELD: manufacture of building materials. SUBSTANCE: invention relates to methods for neutralization of hydrogen fluoride production by- product and can be applied in anhydrite production to prepare binding agent and pigment in building materials industry. Neutralized is solid fluoroanhydrite waste, which is mixed with bituminous limestone at ratio from 1:0.05 to 1: 0.3, the two components being preliminarily ground to particle size not exceeding 1 mm and, on mixing, hardening accelerator is added. EFFECT: expanded consumer's properties of anhydrite binder and reduced price cost of produce.
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