Process for recovering tellurium from copper electrolysis slime

Details Process for recovering tellurium from copper electrolysis slime Process for recovering tellurium from copper electrolysis slime

1989-12-01

1992-11-03

Niebling, John

Chemistry: electrical and wave energy

Processes and products

Electrostatic field or electrical discharge

204 86, 204105R, 204DIG9, 423508, 423510, C25C 122

Patent

active

051605880

ABSTRACT:
An improved process for recovering tellurium from copper electrolysis slime. The process comprises leaching copper and tellurium from said slime with sulfuric acid and recovering tellurium from the solution after leaching (called "leach") by suspending at least one copper electrode plate in a bath of a leach, allowing tellurium to deposit on the surface thereof as copper telluride, agitating the bath as required so as to remove the copper telluride formed on the surface of the copper plates and allow it to settle, collecting the copper telluride precipitate and obtaining tellurium by means known per se. A high grade copper tellurium precipitate is obtained.

REFERENCES:
patent: 2981595 (1961-04-01), Tuwiner et al.
patent: 4047939 (1977-09-01), Morrison
patent: 4094668 (1978-06-01), Yannopoulos et al.
patent: 4540476 (1985-09-01), Dyer

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