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叶轮转速对硅钙质胶磷矿双反浮选的影响 预览 被引量:5

EFFECT OF IMPELLER SPEEDS ON DOUBLE REVERSE FLOTATION FOR CALCIUM-SILICON TYPE COLLOPHANITE
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摘要 浮选机叶轮转速对硅钙质胶磷矿反浮选脱镁、反浮选脱硅有不同的影响。随着叶轮转速的增加,脱镁尾矿产率降低,MgO脱除率降低,BK424捕收能力略有减弱,选择性变化不大。随着叶轮转速的增加,反浮选脱硅尾矿产率增加,SiO2脱除率升高,BK430捕收剂略有增加,但是选择性明显变差,P2O5损失率增大。在阴离子捕收剂体系中,较高的转速导致粗粒自云石从矿化气泡脱落,降低了其上浮率:对磷灰石影响较小。在阳离子捕收体系中,较高的转速增加了细粒磷灰石与BK430的作用,增加了其上浮率。研究结果表明,降低浮选机叶轮转速可以提高磷精矿P2O5回收率。 Effect of impeller speeds, which on removal dolomite from calcium-silicon type collophanite, is different from on removal silicates. With the increasing of impeller speeds, magniferous tails' yield decrease ; the ratio of removal MgO fall down ; capacity of BK424 collector is unstrengthened ; and selectivity of BK424 is no change. In the system of anion collector flotation, when impeller speeds increase, coarser particle dolomite may drop from bubble and the float ratio fall down, while apatite may have been no any effect on. With the increasing of impeller speeds, siliceous tails' yield increase ; the ratio of removal SiO2 is gain in ; capacity of collecter BK424 is strengthened; selectivity of BK430 become bad; and loss of P2O5 rise. In the system of cation collector, higher impeller speeds strengthen action of fine particle apatite and BK430, and promote the loss of apatite. The test result shows that reducing the impeller speeds can enhance the P2O5 recovery of apatite concentrates.
作者 任爱军 魏明安 李松清 祁宗 郑桂兵 REN Ai-jun , WEI Ming-an ,LI Song-qing , QI Zong , ZHENG Gui-bing ( 1. State Key Laboratory of Mineral Processing Science and Technology, Beijing General Research Institute of Mining and Metallurgy, Beijing 100044, China; 2. School of Civil and Environmental Engineering, University of Science and Technology Belting, Beijing 100083, China)
出处 《矿冶》 CAS 2010年第2期 5-8,14,共5页 Mining & Metallurgy
基金 十一五国家科技支撑计划项目(2007BAB08802)资助.
关键词 硅钙质磷矿 双反浮选 叶轮转速 calcium-silicon type collophanite double reverse flotation impeller speeds
作者简介 任爱军,在读博士研究生,高级工程师,矿物加工工程专业。
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参考文献3

  • 1中国矿业年鉴编辑部.中国矿业年鉴[M].北京:地震出版社,2008. 被引量:1
  • 2熊家林等主编..磷化工概论[M].北京:化学工业出版社,1994:589.
  • 3Derjaguin B, Dukhin S. Theory of flotation of small and mediumsize particals[J]. Progress in Surface Science. 1993. 43(1 -4): 241 -266. 被引量:1

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