METHOD OF LEACHING ZINC CONCENTRATE UNDER ATMOSPHERIC CONDITIONS Russian patent published in 2003 - IPC

Abstract RU 2198942 C2

FIELD: nonferrous metallurgy. SUBSTANCE: zinc concentrate is fed into reactor containing ferric iron and jarosite seeds and subjected to sulfuric acid leaching at atmospheric pressure and temperature from 80 C to boiling temperature of solution, concentration of sulfuric acid being maintained within a range of 10 to 40 g/l. Zinc concentrate is dissolved and iron is precipitated in the form of jarosite. EFFECT: increased degree of recovery of zinc and simplified process.

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RU 2 198 942 C2

Authors

Fugleberg Sigmund

Jarvinen Ajmo

Dates

2003-02-20Published

1997-08-11Filed