CALCIUM SILICATE BASED COMPOSITE GRANULAR SORBENT Russian patent published in 2016 - IPC B01J20/16 

FIELD: chemistry.

SUBSTANCE: method includes preparing a mixture containing self-dispersing slag wastes based on magnesium, calcium silicate, hydroaluminosilicates selected from clay and hydromica, granulating the mixture and heat treatment at 850-900°C, which enables to form a single aluminium-silicon-oxygen framework comprising a carbonate spurite type structural phase. Before granulation, a modifier - an aqueous solution of cellulose ester and glycolic acid are added to the mixture.

EFFECT: high efficiency of the sorbent with respect to the sorption of heavy metals and radio nuclides.

2 cl, 3 tbl, 2 ex