Leaching process for zinc sulphide containing materials

Details Leaching process for zinc sulphide containing materials Leaching process for zinc sulphide containing materials

1980-01-18

1981-06-23

Hearn, Brian E.

Chemistry: electrical and wave energy

Processes and products

Electrostatic field or electrical discharge

423104, 423109, 75104, 75120, C25C 114

Patent

active

042749310

ABSTRACT:
A process for treating zinc sulphide materials wherein the sub-divided material is firstly leached, at less than 119.degree. C., with a sulphate leach solution, low in sulphuric acid and having a high iron content together with zinc and impurities in a manner causing iron to precipitate and subsequently leaching the residue and re-dissolving the iron precipitate with spent electrolyte containing regenerated sulphuric acid resulting from the treatment of the leach liquor obtained from the first leach step and wherein the leach solution from the subsequent leach step constitutes the starting leach solution for the first leach step.

REFERENCES:
patent: 2927017 (1960-03-01), Marvin
patent: 2996440 (1961-08-01), Forward
patent: 3316059 (1967-04-01), Vizsolyi
patent: 3477927 (1969-11-01), Veltman
patent: 4004991 (1977-01-01), Veltman
patent: 4071421 (1978-01-01), Masters

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