C - Chemistry – Metallurgy – 25 – C
Patent
C - Chemistry, Metallurgy
25
C
204/69.5
C25C 1/12 (2006.01) C22B 15/00 (2006.01)
Patent
CA 1068643
"PRODUCTION OF BASE METALS FROM ORES AND CONCENTRATES" 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 between 1,5 and 7,0 throughout the process. Iron is solubilized in the process and precipitated as ferric oxide and the copper is taken into solution. The process is con- ducted at substantially atmospheric pressure and at temper- atures of from 50°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 any cuprous ions present and saturation. - 1 -
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