Optimization of flotation parameters for talc carbonates of Mingora emerald mine (Swat), Khyber Pakhtunkhwa, Pakistan
Keywords:
Talc; Flotation; Recovery; Grade; Depressant; Emerald mineAbstract
The aim of the research work is to optimize parameters affecting efficiency of flotation process for obtaining high quality talc from talc carbonates of Mingora emerald mines, Swat, KP. Different parameters of flotation process like, pH, pulp density, depressant dosage, collector dosage, were optimized for maximum grade and recovery of talc. The collector used was a mixture of equal amounts of oleic acid and kerosene oil, Depressant used was sodium hexa metaphosphate and frother used was propyl glycol. Dosage of the collector was varied from 0.6 to 1.4 kg/ton, Depressant dosage varied from 0.4 to 1.2 kg/ton and pH of the pulp was varied as 4, 7, 9, 11 and 12. Optimum grade and recovery of talc was achieved at pH 11, depressant dosage 1.0 kg/ton, collector dosage as 1.2 kg/ton, pulp density 200 gram/liter (g/l), at constant impeller speed of 1100 rpm and frother dosage of 0.1 kg/ton.
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