Study on Recycling Process of Tailings of Fluorite from Shizhuyuan,Hunan Province
The content of calcium fluoride and calcium carbonate in fluorite concentrate tailings of Shi-zhuyuan in Hunan is 24.7%and 19.5%,respectively.The distribution rate of fluorite in+0.045 mm particle size is 54.99%,and the distribution rate of-0.010 mm particle size is 28.16%.The total of the two is 83.15%,while the distribution rate of fluorite metal in 0.045～0.010 mm optional floating particle size is on-ly 16.85%,showing the particle size distribution characteristics of'large at both ends and small in the mid-dle'.The process of pre-classification,overflow concentrated and then mixed with the grinding products,and flotation experiment is carried out on the mixture.Fluorite concentrate with CaF2 content of 85.5%and recovery rate of 71.2%was obtained by closed-circuit test of one roughing-five cleaning-one scavenging with sodium carbonate as regulator,sodium silicate and YF-1 as depressants,and vegetable oleic acid BF-1 as collector.The efficient recycling of fluorite tailings resources was realized.
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