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2 120 487

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IPC

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Application

97122234/02, 1997-12-23

(22)

Actual filing date

1997-12-23

(45)

Published

1998-10-20

(72)

Inventor

Mel'Nichenko E.I.Moiseenko V.G.Sergienko V.I.Ehpov D.G.Rimkevich V.S.Krysenko G.F.

(73)

Holder

Amurskij Kompleksnyj Nauchno-Issledovatel'Skij Institut Amurskogo Nauchnogo Tsentra Dal'Nevostochnogo Otdelenija Ran

METHOD OF PROCESSING GOLD-CONTAINING CRUDE Russian patent published in 1998 - IPC

Abstract RU 2120487 C1

FIELD: gold mining. SUBSTANCE: method is appropriate to process various types of gold- containing crude, including quartz, persistent clayey and sulfide ores. Gold-containing crude is fluoridated with ammonium difluoride and/or fluoride at crude to agent weight ratio 1:(1.2-3.5) and temperature 170-190 C. Products are heated while simultaneously removing volatile ammonium-containing fluorides, nonvolatile residue is subjected to refluoridation and water leaching to give gold- containing concentrate. EFFECT: simplified technology and enabled closed processing cycle. 6 cl, 1 dwg, 3 ex

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RU 2 120 487 C1

Authors

Mel'Nichenko E.I.

Moiseenko V.G.

Sergienko V.I.

Ehpov D.G.

Rimkevich V.S.

Krysenko G.F.

Dates

1998-10-20—Published

1997-12-23—Filed

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