Chemistry: electrical and wave energy – Processes and products – Electrostatic field or electrical discharge
Patent
1977-07-18
1978-08-15
Andrews, R. L.
Chemistry: electrical and wave energy
Processes and products
Electrostatic field or electrical discharge
204107, 75109, 75117, 75121, 423140, 423511, 423633, C25C 112, C25B 104
Patent
active
041070097
ABSTRACT:
A process for extracting copper from a copper bearing ore or concentrate which comprises immersing the ore or concentrate in an electrolyte, intimately mixing with the slurry so formed finely dispersed air or other oxygen-containing gas and maintaining the pH of the mixture at above 1.5 and below 7.0 throughout the process. Iron is solubilized in the process and precipitated as ferric oxide and the copper is taken into solution in which copper is primarily present as cuprous ions. The process is conducted at substantially atmospheric pressure and at temperatures of from 50.degree. C to the boiling point of the electrolyte. The electrolyte is acidic and contains chloride ions in a concentration between that sufficient to maintain in solution cuprous ions present and saturation.
REFERENCES:
patent: 3673061 (1972-06-01), Kruesi
patent: 3785944 (1974-01-01), Atawood et al.
patent: 3923616 (1975-12-01), Atadan et al.
Andrews R. L.
Dextec Metallurgical Proprietary Limited
Jay Edgar N.
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