Method of treating silicate ore containing gold and silver

Details Method of treating silicate ore containing gold and silver Method of treating silicate ore containing gold and silver

1986-01-29

1987-09-22

Andrews, Melvyn J.

Specialized metallurgical processes, compositions for use therei

Processes

Electrothermic processes

75 72, 75 83, C22B 1100

Patent

active

046953175

ABSTRACT:
A silicate ore containing gold and silver is melted with the slag from a copper converter and a reducing agent. A source of CaO may also be added to the slag so that the treated slag may contain at least 3.0% by weight of CaO. Copper is recovered from the slag and absorbs gold and silver from the ore. This method drastically improves the capacity for the treatment of a silicate ore containing gold and silver during the smelting of copper. It enables the complete melting of the ore without leaving any ore undissolved.

REFERENCES:
patent: 3674463 (1972-07-01), Yannopoulos
patent: 3796568 (1974-03-01), Szekely et al.
patent: 4135923 (1979-01-01), Day
patent: 4295881 (1981-10-01), Saville
patent: 4451289 (1984-05-01), Van Hecke et al.

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