Distillation process for separating silver and copper chlorides

Details Distillation process for separating silver and copper chlorides Distillation process for separating silver and copper chlorides

1981-06-05

1983-03-29

Hearn, Brian E.

Specialized metallurgical processes, compositions for use therei

Processes

Free metal or alloy reductant contains magnesium

423 44, 423493, 203 94, 75 72, C01G 305, C22B 1508

Patent

active

043782450

ABSTRACT:
Purification of cuprous chloride is accomplished by distillation wherein cuprous chloride is recovered as the overhead product, and substantially all of the silver chloride and other impurities present report to the bottoms. Typical impurities in copper ore leach liquors include chlorides of silver, calcium, arsenic, bismuth, iron, nickel, lead, antimony, selenium, tellurium, silicon, mercury, manganese, tin, aluminum, magnesium, chromium, cobalt, cadmium, molybdenum, zinc and titanium, most of which may be excluded in large part by crystallization of cuprous chloride. Measurable amounts of these impurities, however, report to the crystals, and silver tends to co-precipitate with the copper in major amounts. Distillation accomplishes a high degree of copper-silver separation and substantial elimination of other impurities from the copper.

REFERENCES:
patent: 1319858 (1919-10-01), Edwards
patent: 4013457 (1977-03-01), Goens
Jolly, The Synthesis and Characterization of Inorganic Compounds, Prentice Hall, Englewood, N.J. (1970), pp. 85-91, 509-511.

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