FIELD: chemistry.
SUBSTANCE: present invention relates to a mixed basicity anionite which can be used to extract noble metals from hydrometallurgical cyanide solutions and pulp. Described is a mixed basicity anionite for sorption of noble metals from cyanide solutions and pulp, containing benzyl dimethylamine and dibenzyl dimethylamine functional groups, obtained by treating a low-cross-linked porous copolymer of styrene, divinyl benzene and ethyl styrene with a batched mixture of monomers of similar composition, also containing a polymerisation initiator and a blowing agent, followed by secondary polymerisation to form an additional cross-linked polymer in amount of 30-75%, successive chlorination and amination thereof with dimethylamine to introduce benzyl dimethylamine and dibenzyl dimethylammonium functional groups.
EFFECT: improved cost/performance ratio of sorption extraction of noble metals from cyanide solutions and pulp.
1 cl, 3 tbl, 3 ex
| Title | Year | Author | Number |
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