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2 159 293

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C1

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IPC

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Application

2000103985/02, 2000-02-21

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Start date

2000-02-21

(22)

Actual filing date

2000-02-21

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Published

2000-11-20

(72)

Inventor

Miroevskij G.P.Demidov K.A.Kudrjakov M.V.Khomchenko O.A.Kasikov A.G.

(73)

Holder

Otkrytoe Aktsionernoe Obshchestvo Gorno-Metallurgicheskaja Kompanija"

METHOD OF PROCESSING OF SOLUTIONS CONTAINING SULFURIC ACID AND NONFERROUS METALS Russian patent published in 2000 - IPC

Abstract RU 2159293 C1

FIELD: metallurgy, particularly, methods of processing of sulfuric acid solutions containing nickel, copper, zinc and other impurities formed in processes of production of copper, nickel and other metals from sulfide materials. SUBSTANCE: method of processing of solutions containing sulfuric acid and nonferrous metals formed in process of cleaning of gases of pyrometallurgical operations in processing of copper-nickel materials includes two stages of gas cleaning in wash towers, one of which operates under regime of evaporation, and the other, under condensation regime. Solutions are preliminarily concentrated in the first wash tower up to content of sulfuric acid of 400-650 g/l. Acid is extracted with obtaining separately of solution containing, mainly, acid and solution of nonferrous metals, and water coming with gases and solutions is condensed in the second wash tower. Condensate of the second wash rower is used in process of acid extraction and partially withdrawn in form of solution containing minor amounts of metals and acid. EFFECT: reduced consumption of power and materials, and losses of copper, nickel and acid. 3 cl, 1 ex

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RU 2 159 293 C1

Authors

Miroevskij G.P.

Demidov K.A.

Kudrjakov M.V.

Khomchenko O.A.

Kasikov A.G.

Dates

2000-11-20—Published

2000-02-21—Filed

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