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首页> 外文期刊>Fuel >Optimization of the performance of the hydrodynamic parameters on the flotation performance of coarse coal particles using design expert (DX8) software
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Optimization of the performance of the hydrodynamic parameters on the flotation performance of coarse coal particles using design expert (DX8) software

机译:使用Design Expert(DX8)软件优化水动力参数对粗煤颗粒浮选性能的影响

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摘要

Hydrodynamic parameters play an important role in flotation efficiency. In the present work, the effects of some key hydrodynamic factors such as impeller speed (600, 700 rpm), impeller off-bottom clearance (0.3H, 0.4H), solids percent (12%, 14%), frother type (Pine oil and methyl isobutyl carbinol (MIBC)) and their concentrations (140, 170 ppm) on the flotation performance of coarse coal particles were investigated using factorial experimental design. The DX8 software was used to analyze the results of the experiments. According to DX8 software, it is concluded that until 700 rpm, the effects of the studied parameters follow the order: impeller off-bottom clearance > impeller rotational speed > frother concentration > the interaction between impeller off-bottom clearance and impeller speed. But for higher impeller speeds, the impeller rotational speed has the most effects. The positive effect of impeller speed before 700rpm (i.e. 97397.38 113609.61, Fr>1.53 and 0.0033
机译:流体动力学参数在浮选效率中起着重要作用。在目前的工作中,一些关键的流体动力学因素的影响,例如叶轮速度(600、700 rpm),叶轮离地间隙(0.3H,0.4H),固体百分比(12%,14%),起泡类型(松树)运用析因实验设计研究了油和甲基异丁基甲醇(MIBC)及其浓度(140、170 ppm)对粗煤颗粒浮选性能的影响。 DX8软件用于分析实验结果。根据DX8软件得出的结论是,直到700 rpm,研究的参数的影响都遵循以下顺序:叶轮底部间隙>叶轮转速>起泡剂浓度>叶轮底部间隙与叶轮速度之间的相互作用。但是对于更高的叶轮速度,叶轮转速影响最大。叶轮转速在700rpm之前的正影响(即97397.38 113609.61,Fr> 1.53和0.0033对于μ_p= 0.01299,

著录项

  • 来源
    《Fuel》 |2013年第5期|593-600|共8页
  • 作者

    A. Dashti; M. Eskandari Nasab;

  • 作者单位

    The student of Mineral Processing Engineering, P.O. Box 51587335983, Tabriz, Iran;

    Mineral Processing Engineering, Zarand Collage, Bahonar University, P. 0. Box 14579-73869, Kerman 7616914377. Iran;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    coarse coal flotation; hydrodynamics; detachment; suspension; impeller speed;

    机译:粗煤浮选流体力学分离;悬挂;叶轮转速;

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