
88
C
Cuprex
with air, and the copper sulfate is reused. The sulfur is recovered as ammonium sulfate. Developed by the
EIC Corporation, MA. Demonstrated by the Pacic Gas & Electric Company at Geysers, CA, in 1979, but
nally abandoned.
U.S. Patent 4,192,854.
Chem. Eng. News, 1979, 57(49), 29.
Kohl, H.L. and Nielsen, R.B., Gas Purication, 5th ed., Gulf Publishing Co., Houston, TX, 1997, 853.
Cuprex [Copper extraction] A process for extracting copper from sulde ores, combining chloride leaching,
electrowinning, and solvent extraction. Piloted by a consortium consisting of ICI, Nerco Minerals Company,
and Técnicas Reunidas.
Dalton, R.F., Price, R., ...