Experimental Study on Mineral Processing of a High-Mud and Low-Sulfur Content Gold Mine in the Form of a Certain Quartz Diorite
A systematic mineral processing experiment was conducted on a high-mud and low-sulfur content gold mine in the form of a certain quartz diorite in the northwest region,taking into account the occurrence and distribution characteristics of gold in the ore.The gold(Au)grade in the original ore was 3.21 g/t,the sulfur(S)grade was 2.61％,and the total content of easily floating or mud prone gangue in the ore was as high as 40.96％.Choose to use a full particle flotation process consisting of one roughing selection,three sweeping selections,and two cleaning selections.Under the condition of grinding fineness of-0.074 mm accounting for 80％,optimize the reagent system and use a combination of butyl xanthate and butyl ammonium black powder(total dosage of 110 g/t,ratio of 10∶1)as the collector,water glass and XJ-11(1 000+500 g/t)as the mud inhibitor,which effectively solved the interference of high content mud gangue on the flotation of gold carrying minerals,improved the flotation velocity of gold carrying minerals,and finally obtained a gold concentrate with a gold(Au)recovery rate of 85.87％and a gold(Au)grade of 37.22 g/t.The research results can provide suggestions for efficient flotation recovery of high-mud and low-sulfur content gold mines in the form of quartz diorite.
Quartz diorite formHigh-mud and low-sulfur content gold mineFlotation
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