PRECIOUS METAL RECOVERY METHOD Russian patent published in 2004 - IPC

Abstract RU 2235140 C2

FIELD: precious metal technology.

SUBSTANCE: invention can be used for jointly transferring platinum group metals and gold into solution. Transfer of indicated metals into acid-soluble form is accomplished by firing at 450-600^оС a charge consisting of concentrate, pyrite, and sodium chloride. Resulting ashes are leached with dilute hydrochloric or sulfuric acid to dissolve more than 90% of metals.

EFFECT: increased degree of recovering platinum, palladium, and gold using no toxic reagents.

2 cl, 1 tbl, 3 ex

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RU 2 235 140 C2

Authors

Sinegribov V.A.

Judina T.B.

Smetannikov A.F.

Krasnoshtejn A.E.

Dates

2004-08-27—Published

2002-12-06—Filed