Selective removal of mercury from cyanide solutions

Details Selective removal of mercury from cyanide solutions Selective removal of mercury from cyanide solutions

1979-10-24

1981-03-17

Hearn, Brian E.

Chemistry of inorganic compounds

Treating mixture to obtain metal containing compound

Group ib metal

423 29, 423 43, 423101, 75118R, C01G 1300, C01C 308

Patent

active

042567076

ABSTRACT:
A rapid, energy efficient, low cost, nonhazardous method for the selective removal of mercury from mercury-containing metal cyanide solutions, particularly the cyanide solutions resulting from the cyanidation of gold ore and the like, wherein a reactive sulfide is admixed with the solution for a time sufficient to form an insoluble mercuric sulfide precipitate. The mercuric sulfide precipitate is then separated from the metal cyanide solution by filtration or other conventional means.

REFERENCES:
patent: 828287 (1906-08-01), Hobson
patent: 935337 (1909-09-01), Thwaites
patent: 1198086 (1916-09-01), Vandercook
patent: 4072587 (1978-02-01), Heinen
Neuhausen, B., "The Mode of Reaction of Highly Insoluble or Undissociated Salts", Science, vol. 57, No. 1462, p. 26, (1923).

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