Recovery of non-ferrous metals by thermal treatments of solution

Details Recovery of non-ferrous metals by thermal treatments of solution Recovery of non-ferrous metals by thermal treatments of solution

1980-09-22

1982-03-02

Carter, Herbert T.

Chemistry of inorganic compounds

Treating mixture to obtain metal containing compound

Group iib metal

423 27, 423 41, 423 45, 423 89, 423 98, 423109, 423150, 423DIG2, 423DIG16, 204119, C01G 906

Patent

active

043178030

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:

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Smithson et al., "Transactions of the Metallurgical Soc. of AIME", vol. 224, pp. 827-841.
Moriyama et al., "AIME World Symposium on Mining & Metallurgy of Lead & Zinc", vol. 11, 1970, pp. 199-222.
Steinveit, "AIME World Symposium on Mining & Metallurgy of Lead & Zinc", vol. 11, 1970, pp. 223-246.

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