Liquid purification or separation – Processes – Chemical treatment
Patent
1997-07-30
2000-07-18
Straub, Gary P.
Liquid purification or separation
Processes
Chemical treatment
210904, 423513, 423521, C02F 172, C01B 1506
Patent
active
060902973
ABSTRACT:
A process for treating precious metal tailing slurries with Caro's acid, in which the Caro's acid is accompanied by reduced amounts of Caro's acid mist, is disclosed. The hot Caro's acid-containing mixture, formed by reaction of concentrated sulfuric acid and hydrogen peroxide, is quenched with water to reduce or eliminate the Caro's acid mist. The resulting cooled and diluted mixture is introduced into a precious metal tailings slurry to reduce the amount of cyanide values in the slurry.
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Castrantas Harry M.
Johnson William
Manganaro James L.
Mikida Ralph S.
Baker Patrick C.
FMC Corporation
Ianno Frank
Monroe Bruce M.
Straub Gary P.
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