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2 375 475

(13)

(51)

IPC

C22B11/00(2006-01-01)

C22B3/06(2006-01-01)

(21) (22)

Application

2008120058/02, 2008-05-20

(24)

Start date

2008-05-20

(22)

Actual filing date

2008-05-20

(45)

Published

2009-12-10

(72)

Inventor

Sychev Aleksandr IvanovichObysov Anatolij Vasil'EvichDul'Nev Aleksej ViktorovichTsarev Vladimir ViktorovichTertyshnyj Igor' Grigor'Evich

(73)

Holder

Obshchestvo S Ogranichennoj Otvetstvennost'Ju Geologicheskoe Predprijatie

METHOD OF ENRICHMENT OF PERSISTENT BASE ORES AND EXTRACTION FROM IT OF PRECIOUS METALS Russian patent published in 2009 - IPC C22B11/00 C22B3/06

Abstract RU 2375475 C1

FIELD: metallurgy.

SUBSTANCE: invention relates to method of enrichment of persistent and base ores and extraction from its of noble metals, particularly gold, platinum, palladium. Method includes irradiation of ore by microwave frequency field, magnetic separation with formation of non-magnetic residue and magnetic and weak-magnetic fractions. Magnetic and/or weak-magnetic fractions are treated by solution of acid and/or oxidant at irradiation by microwave frequency field with receiving of suspension and passing of noble metals into solution. Additionally initial ore before irradiation by microwave frequency field subject to mechanical activation with usage of surface active agents with receiving of grinned ore with grain size 50-500 mcm. Received after treatment by solution of acid and/or oxidant at irradiation by microwave frequency field suspension is filtered with receiving of filtrate which is a concentrate of noble metals.

EFFECT: reduction of mass of processed ore and increasing of noble metals extraction.

4 cl, 1 tbl, 6 ex

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RU 2 375 475 C1

Authors

Sychev Aleksandr Ivanovich

Obysov Anatolij Vasil'Evich

Dul'Nev Aleksej Viktorovich

Tsarev Vladimir Viktorovich

Tertyshnyj Igor' Grigor'Evich

Dates

2009-12-10—Published

2008-05-20—Filed