Method of producing zinc from chloride solutions which contain c

Details Method of producing zinc from chloride solutions which contain c Method of producing zinc from chloride solutions which contain c

1981-05-11

1983-12-20

Edmundson, F.

Chemistry: electrical and wave energy

Processes and products

Electrostatic field or electrical discharge

204118, 423100, C25L 116, C01G 900

Patent

active

044216165

ABSTRACT:
Selective extraction of zinc from chloride solutions which contain iron, copper and zinc, where the zinc is extracted in organic phase by means of tri-n-butylphosphate in an organic solvent. The extraction is carried out on chloride solutions in which the lead contents is possibly lowered and where the copper contents is maximum 50 grams per liter higher copper concentration being reduced for instance by electrolysis in diaphragm cell. The zinc containing organic phase is washed, and zinc back-extracted and conducted to a diaphragm cell for electrolysis of zinc, the used electrolyte being returned to the back-extraction step. The raffinate from the zinc extraction is used for repeated leaching of metals after preceding reoxidation.

REFERENCES:
patent: 3441372 (1969-04-01), Pegler et al.
patent: 4288304 (1981-09-01), De Marthe et al.

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