SCHUNGITE-BASED COMPOSITE MATERIAL AND METHOD OF PRODUCING SAID MATERIAL Russian patent published in 2010 - IPC C04B28/14 B82B1/00 G21F1/04 C04B111/20 

FIELD: chemistry.

SUBSTANCE: invention relates to production of composite material based on schungite and gypsum, which can be used in making ecologically clean construction articles for facing tiles, wall blocks and panels, for medical purposes and as an agent for protection from radiation. The composite material contains the following, wt %: construction gypsum binder or a mixture of construction and high-strength gypsum 18-38, calcium hydroxide 0.5-1.0, plasticiser - sodium polycarboxylate 0.5-0.8, setting retarder - amidox 0.2-0.5, natural schungite chips with size of 5-20 mm 51-74 and water - the rest. The method of producing said material involves mixing schungite chips with a solution of sodium polycarboxylate and amidox in water, adding powdered calcium hydroxide and gypsum binder to the obtained mass while stirring until obtaining schungite chips uniformly covered with the suspension.

EFFECT: high strength of material, low power consumption when grinding schungite and drying the obtained material, reduction of level of radiation, radio transparency and improved antiseptic and biocidal properties.

2 cl, 2 tbl, 7 ex