METHOD OF EXTRACTING IRON FROM A PULP CONTAINING COMPOUNDS OF HEAVY NON-FERROUS METALS

Title:

METHOD OF EXTRACTING IRON FROM A PULP CONTAINING COMPOUNDS OF HEAVY NON-FERROUS METALS

Document Type and Number:

WIPO Patent Application WO/1990/012120

Kind Code:

A1

Abstract:

A method of extracting iron from a pulp containing compounds of heavy non-ferrous metals provides, first, for treating the pulp with sulphuric lye in the presence of sulphuric acid. Then it is treated with sulphuric acid while being heated with vapour up to a temperature of 80-90°C and while being bubbled with air. The thus treated pulp, together with a neutralizing agent, is dispersed with vapour. The neutralization is effected at a temperature of 115-140°C. The iron-containing sediment obtained is then separated.

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Inventors:

KASIMOV ALEXANDR MEDZHITOVICH (SU)
KOSTENKO LJUDMILA VYACHESLAVNA (SU)
ERSHOV SERGEI FEDOROVICH (SU)
JUSHKOV IGOR GEORGIEVICH (SU)
TERTICHNAYA LJUDMILA ANATOLIEV (SU)
ISKO VLADIMIR BORISOVICH (SU)

Application Number:

PCT/SU1989/000082

Publication Date:

October 18, 1990

Filing Date:

March 30, 1989

Export Citation:

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Assignee:

N PROIZV OB ENERGOSTAL (SU)

International Classes:

C22B7/00; C22B3/44; (IPC1-7): C22B3/44

Foreign References:

SU996495A1	1983-02-15
SU1024516A1	1983-06-23
SU1346689A1	1987-10-23
SU1294853A1	1987-03-07
DE2111737C

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