METHOD OF PREPARING ANHYDRITE BINDER Russian patent published in 2010 - IPC C04B11/06 

FIELD: chemistry.

SUBSTANCE: invention relates to a method of preparing anhydrite binder and can be used in the industry of construction materials. In the method of preparing anhydrite binder from uncooled acidic wastes from production hydrogen fluoride, involving mixture and neutralisation of the said wastes with a lime-containing agent - self-decomposing ferrochromium slag with simultaneous grinding of the said mixture, a setting agent and a superplasticiser are added in amount of 0.7 and 0.5 wt %, respectively, of the mass of the said wastes while stirring.

EFFECT: increased strength of anhydrite binder.

1 tbl