Harmless disposal method of cyanidation tailings
A technology of harmless treatment and cyanidation of tailings, which is applied in the direction of chemical instruments and methods, solid waste removal, transportation and packaging, etc., can solve the problems of high anti-corrosion ability, pollution, long time, etc., and achieve cyanide removal Good effect, avoid the effect of polluting the environment
Active Publication Date: 2018-09-11
NORTHEASTERN UNIV
19 Cites 14 Cited by
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A harmless disposal method of cyanidation tailings comprises the following steps: (1) using cyanidation tailings as a raw material, or adding an additive CaO into cyanidation tailings as mixed raw materials; (2) heating the raw material or the mixed raw materials to 250-450 DEG C for pyrolysis and carrying out thermal insulation for less than or equal to 90 min so as to obtain calcine; and (3) directly using calcine as backfill treatment, or extracting pyrite through flotation. The method of the invention has a good cyanogens removal effect, and the cyanidation tailings which have undergone low-temperature pyrolysis meets requirements of common solid wastes.
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