Conference Proceedings
MINPREX 2000
Conference Proceedings
MINPREX 2000
Combined Pressure Leach Method for the Recovery of the Values from Low-Grade Molybdenite Concentrate
The pressure oxidation of molybdenite concentrates in acidic and alkaline media has been studied. The conditions of the selective oxidation of copper and iron sulphide minerals with a quantitative copper leaching by ferrous-ferric-sulphate solution have been found and explained from the point of view of electrochemical kinetics. The partly oxidised residue consisting of molybdenite and (hydro-) oxide of iron (III) was then decomposed by oxygen in alkaline media. Effects of the main parameters, such us oxygen pressure, leaching temperature, solid-liquid phase ratio, autoclave stirring speed as well as lixiviants nature on the molybdenite oxidation rate have been established.
Contributor(s):
R Mirvaliev, K Inoue
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- Published: 1999
- PDF Size: 0.645 Mb.
- Unique ID: P200005034