Recovery of non-ferrous metals by thermal treatment of solutions

Details Recovery of non-ferrous metals by thermal treatment of solutions Recovery of non-ferrous metals by thermal treatment of solutions

1978-09-11

1980-09-23

Carter, Herbert T.

Chemistry: electrical and wave energy

Processes and products

Electrostatic field or electrical discharge

423 1, 423 27, 423 41, 423 45, 423 89, 423 98, 423 99, 423109, 423150, 423DIG2, 423DIG16, C25C 116, C01G 906

Patent

active

042241227

ABSTRACT:
The specification discloses a method for recovering non-ferrous metals such as zinc or copper from their concentrates, ores or any other metal containing materials into a solution containing these non-ferrous metals as sulphates and a minimal amount of dissolved iron. The resultant solution is suited without or with minimum pre-purification treatment for conventional electrowinning processes to recover such non-ferrous metals with less difficulties than the previous methods involving complex iron-removal processing. There is disclosed a method for recovering at least one non-ferrous metal soluble in sulphuric acid from a strong sulphuric acid solution containing said metal and iron as sulphates, said method comprising the following consecutive steps:

REFERENCES:
patent: 1634100 (1927-06-01), Gepp et al.
patent: 2155119 (1939-04-01), Ebner
patent: 3053626 (1962-09-01), Patterson
patent: 3181944 (1965-05-01), Brooks et al.
patent: 3230071 (1966-01-01), Marvin
patent: 3676107 (1972-07-01), Barnard et al.
patent: 3745207 (1973-07-01), Hausen
patent: 4071612 (1978-01-01), Weyer et al.

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