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2 540 236

(13)

(51)

IPC

C22B11/00(2006-01-01)

C22B3/06(2006-01-01)

(21) (22)

Application

2013121645/02, 2013-05-07

(24)

Start date

2013-05-07

(22)

Actual filing date

2013-05-07

(45)

Published

2015-02-10

(72)

Inventor

Khanchuk Aleksandr IvanovichMedkov Mikhail Azar'EvichMolchanov Vladimir PetrovichEhpov Dantij Grigor'Evich

(73)

Holder

Federal'Noe Gosudarstvennoe Bjudzhetnoe Uchrezhdenie Nauki Institut Khimii Dal'Nevostochnogo Otdelenija Rossijskoj Akademii Nauk Dvo Ran)Federal'Noe Gosudarstvennoe Bjudzhetnoe Uchrezhdenie Nauki Dal'Nevostochnyj Geologicheskij Institut Dal'Nevostochnogo Otdelenija Rossijskoj Akademii Nauk Dvo Ran)

PROCESSING OF HIGH-CARBON GOLD-BEARING ROCK Russian patent published in 2015 - IPC C22B11/00 C22B3/06

Abstract RU 2540236 C2

FIELD: metallurgy.

SUBSTANCE: process comprises graphite flotation and gold extraction by etching with acid solution of thiourea. Note here that, prior to etching, flotation tailings are subjected to dry magnetic separation. Dry magnetic separation is conducted in magnetic field of 800-1000 Oersted with gold concentration in nonmagnetic fraction with gold content of 5.2-5.6 g per ton. Nonmagnetic fraction is subjected to etching with acid solution of thiourea.

EFFECT: reduced specific consumption of reagents at processing, higher process efficiency.

3 ex

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RU 2 540 236 C2

Authors

Khanchuk Aleksandr Ivanovich

Medkov Mikhail Azar'Evich

Molchanov Vladimir Petrovich

Ehpov Dantij Grigor'Evich

Dates

2015-02-10—Published

2013-05-07—Filed