Experimental Study on Recovery Process of Barite from a Tailing in Xinjiang
In order to recover barite efficiently from a tailings in Xinjiang,a detailed beneficiation experiment was carried out by using the gravity and magnetic combined process based on analysis of the characteristics of the sample.The results showed that ① the grade of BaSO4 in the sample is 34.85%,and the main gangue minerals are calcite,quartz,feldspar and erythrolimonite.BaSO4 is mainly enriched in-200 μm particle size.② When the particle size of sample above 200 μm is screened for discarding,200～74 μm particle grade sample is treated by fine sand shaker with one roughing and one cleaning gravity separation process,-74 μm particle grade sampls is treated by slime shaker with rough separation+medium ore re-sep-aration closed circuit process,and the gravity concentrate is treated by one low intensity magnetic separation+one high gradi-ent strong magnetic separation process for iron removal.Barite concentrate with BaSO4 grade of 90.65%and recovery rate of 71.35%was obtained.The concentrate met the first-class quality requirements of barite for chemical industry,which could re-alize the comprehensive utilization of the tailings resources.
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