Research on Flotation of a High Magnesium Copper Mine in Yunnan
The chemical multi-element and elemental occurrence analysis was conducted on a high magnesium copper mine in Yunnan.The main phase composition of the high magnesium copper mine was identified,and the recommended grinding fineness was-0.074 mm,accounting for 80%,based on the analysis of the original ore dissociation.Subsequently,experiments were conducted on grinding fineness,lime dosage,sodium sulfide dosage,collector type and dosage to determine the optimal experimental conditions.Under these conditions,the closed-circuit test was conducted to obtain copper concentrate with copper grade of 23.47%,copper recovery rate of 90.32%,a magnesium grade of 7.53%,and a magnesium recovery rate of 0.79%.On this basis,sodium humate was used to reduce the magnesium grade of the concentrate to 4.95%,meeting production requirements.
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