PYROMETALLURGICAL METHOD FOR RECOVERING PRECIOUS METALS OUT OF GRAVITY CONCENTRATES Russian patent published in 1997 - IPC

Abstract RU 2099435 C1

FIELD: pyrometallurgy. SUBSTANCE: method includes oxidative firing to produce calcine, preparation of charge, and melting it to yield iron-sodium slag and gold-containing alloy. According to invention, oxidative firing is carried out at 600-750 C for 10-15 h, and subjected to melting is slurry containing 35-43% calcine, 35-43% saltpeter, and 20-30% borax. EFFECT: increased concentration of precious metals in concentrated product. 3 tbl

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RU 2 099 435 C1

Authors

Lolejt S.I.

Il'Chenko G.A.

Kalmykov Ju.M.

Davydova V.Ja.

Agafonov O.V.

Nikitin V.P.

Dates

1997-12-20Published

1996-08-23Filed