赣州某萤石尾矿浮选柱分选试验研究
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摘要
针对赣州某萤石尾矿萤石粒度粗、CaF2含量低的特点,提出了磨矿-柱浮选工艺,解决了该萤石尾矿中CaF2难以回收的问题。考查了磨矿细度、矿浆pH值、水玻璃用量、捕收剂用量、浮选柱处理量、循环压力和充气量等因素对浮选指标的影响,优化了工艺和操作参数条件,并在此基础上进行全流程闭路试验。结果表明:在原矿品位22.87%的条件下,经过一段磨矿+浮选柱一粗三精工艺分选,可以获得精矿品位93.65%、回收率54.82%的良好指标。
In view of the coarse paticle size and low CaF2 content of a fluorite tailings in Ganzhou, a grinding-column flotation process was proposed to solve the problem that the fluorite tailings was difficult to be recovered. The effects of grinding fineness, pH value of slurry, amount of sodium silicate, amount of collector, flotation column throughput, circulating pressure and aeration aumout on the flotation index were investigated. Then the closed circuit experiment was carried out based on the optimized operation parameters. The results show that a concentrate with 93.65% grade and 54.82% recovery can be obtained after a grinding-column flotation of one stage roughing three stage cleanings process under the condition of raw ore grade 22.87%.
In view of the coarse paticle size and low CaF2 content of a fluorite tailings in Ganzhou, a grinding-column flotation process was proposed to solve the problem that the fluorite tailings was difficult to be recovered. The effects of grinding fineness, pH value of slurry, amount of sodium silicate, amount of collector, flotation column throughput, circulating pressure and aeration aumout on the flotation index were investigated. Then the closed circuit experiment was carried out based on the optimized operation parameters. The results show that a concentrate with 93.65% grade and 54.82% recovery can be obtained after a grinding-column flotation of one stage roughing three stage cleanings process under the condition of raw ore grade 22.87%.
引文
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[2]邓海波,任海洋,许霞,等.石英型萤石矿的浮选工艺和低温捕收剂应用研究[J].非金属矿, 2012, 35(5):25-27.
[3]钟江春.我国萤石资源利用概况及其发展趋势[J].化学工业, 2011, 29(12):11-15.
[4]房朝军,冯其明,欧乐明,等.某钨尾矿综合回收低品位萤石浮选试验研究[J].有色金属科学与工程, 2014(2):72-76.
[5]姚建云,高惠民,张孝平,等.低品位萤石尾矿回收萤石试验研究[J].化工矿物与加工, 2016(1):15-18.
[6]喻福涛,高惠民,史文涛,等.湖南某铅锌尾矿中萤石的选矿回收试验[J].金属矿山, 2011, 40(8):162-165.
[7]秦华江,张海军,何川,等.旋流-静态微泡浮选柱回收钼精选尾矿中钼金属[J].中国钼业, 2016, 40(4):6-9.
[8]刘佳林,马子龙,孙士强,等.某钼粗选精矿再选试验[J].矿产综合利用, 2016(6):31-34.
[9]艾光华,李继福,邬海滨,等.某低品位萤石矿浮选试验研究[J].矿冶工程, 2017, 37(4):25-28.
[10]李强,李奇勇,张银英.福建某铅锌尾矿中萤石的选矿回收试验研究[J].有色金属:选矿部分, 2017(2):29-32.
[11]陈文胜,刘炯天,李小兵,等.旋流-静态微泡浮选柱浮选萤石的影响因素分析[J].金属矿山, 2008(5):100-102.
[12]王红新,夏文成,杨建国,等.充气量和循环量对浮选柱气含率的影响研究[J].煤炭工程, 2011(2):85-87.