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2 515 735

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IPC

C22B3/06(2006-01-01)

C22B59/00(2006-01-01)

C22B47/00(2006-01-01)

C22B7/04(2006-01-01)

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Application

2013103866/02, 2013-01-29

(24)

Start date

2013-01-29

(22)

Actual filing date

2013-01-29

(45)

Published

2014-05-20

(72)

Inventor

Gavrilov Petr MikhajlovichRevenko Jurij AleksandrovichBondin Vladimir ViktorovichEfremov Igor' Gennad'EvichAlekseenko Vladimir NikolaevichShabanov Vasilij FilippovichKuz'Min Vladimir IvanovichPavlov Vjacheslav Frolovich

(73)

Holder

Federal'Noe Gosudarstvennoe Unitarnoe Predprijatie Kombinat"

METHOD TO EXTRACT METALS FROM SILICATE SLAGS Russian patent published in 2014 - IPC C22B3/06 C22B59/00 C22B47/00 C22B7/04

Abstract RU 2515735 C1

FIELD: metallurgy.

SUBSTANCE: method includes grinding of slag and leaching. To prevent formation of non-filtered pulps, specified for gel formation of silicic acid, slag is previously mixed with concentrated acid (nitric or hydrochloric), taken in quantities necessary to neutralise slag, pulp is maintained for 1-2 hours. At the same time precious components are leached, and the produced silicic acid coagulates, forming large agglomerates. After this the mass is additionally ground and leached with water. At the stage all salts are washed into the solution, and gels are not produced. Further the solution is separated by filtration or whirling and processed by available hydrometallurgical methods, and the hard silicate product is sent to a dump.

EFFECT: elimination of energy-intensive process of evaporation during acid stripping of silicates.

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RU 2 515 735 C1

Authors

Gavrilov Petr Mikhajlovich

Revenko Jurij Aleksandrovich

Bondin Vladimir Viktorovich

Efremov Igor' Gennad'Evich

Alekseenko Vladimir Nikolaevich

Shabanov Vasilij Filippovich

Kuz'Min Vladimir Ivanovich

Pavlov Vjacheslav Frolovich

Dates

2014-05-20—Published

2013-01-29—Filed