Hydrometallurgical process for the recovery of valuable componen

Details Hydrometallurgical process for the recovery of valuable componen Hydrometallurgical process for the recovery of valuable componen

1975-10-01

1977-01-11

Andrews, R. L.

Chemistry: electrical and wave energy

Processes and products

Electrostatic field or electrical discharge

204105R, 75 99, 75118R, 75121, C25C 120, C25C 122

Patent

active

040025446

ABSTRACT:
A hydrometallurgical process for the recovery of silver, selenium and tellurium from the anode slime produced in the electrolytic refining of copper or lead or from other raw materials bearing these metals, wherein the raw material and concentrated sulfuric acid or oleum are heated at approx. 160.degree.-300.degree. C, preferably 160.degree.-200.degree. C, in order to sulfate the nickel and the possible copper. The concentrated sulfuric acid in which the silver, selenium, barium, and tellurium present in the raw material have dissolved is separated from the undissolved solid material so that the sulfuric acid can be treated separately for the recovery of Ag, Se, and Te and the solid material separately for the recovery of valuable components present in it.

REFERENCES:
patent: 509634 (1893-11-01), Tuttle et al.
patent: 2031299 (1936-02-01), Betterton et al.

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