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首页> 外文期刊>Mathematical Problems in Engineering >A Theoretical Model for the Rake Blockage Mitigation in Deep Cone Thickener: A Case Study of Lead-Zinc Mine in China
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A Theoretical Model for the Rake Blockage Mitigation in Deep Cone Thickener: A Case Study of Lead-Zinc Mine in China

机译：锥形深层浓缩机中耙面堵塞缓解的理论模型：以中国铅锌矿为例

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摘要

Deep cone thickener (DCT) is key equipment in cemented paste backfill (CPB) technology. However, rake blockage occurs frequently in DCT during the dewatering process of the unclassified tailings being thickened from dilute slurry to thickened tailings or paste. Rake blockage has disastrous effects on the CPB operation. In order to investigate the influencing factors of rake blockage in DCT, a mathematical model of rake power in DCT was developed. In addition, stacking mud bed (made of thickened tailings) from the DCT in Huize lead-zinc mine (HLZM) in different rake blockage accidents was sampled and tested to investigate the effect of tailings characters on rake blockage. Results indicated that the concentration of the mud bed and the friction between the mud bed and the cone wall contributed to the rake blockage. The concentration and friction were influenced by the high content of coarse particles in the mud bed. Moreover, activating devices for bed mud, as the corrective and preventive action, were developed to prevent the rake blockage, which was valid in HLZM.
机译：深锥浓缩机（DCT）是胶浆回填（CPB）技术中的关键设备。但是，在DCT脱水过程中，未分类的尾矿从稀浆液增稠到增稠的尾矿或糊状物时，耙阻塞经常发生。耙子堵塞会对CPB的运行造成灾难性的影响。为了研究DCT中耙阻塞的影响因素，建立了DCT中耙功率的数学模型。此外，对会泽铅锌矿（HLZM）在不同耙阻塞事故中来自DCT的堆积泥床（由加厚的尾矿制成）进行了采样和测试，以研究尾矿特征对耙阻塞的影响。结果表明，泥床的集中以及泥床与圆锥壁之间的摩擦力造成了耙的堵塞。浓度和摩擦力受泥床中高含量的粗颗粒的影响。此外，开发了用于泥浆的活化装置，作为纠正和预防措施，以防止犁耙阻塞，这在HLZM中是有效的。

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  • 来源
    《Mathematical Problems in Engineering》 |2019年第2期|2130617.1-2130617.7|共7页
  • 作者

    Ruan Zhuen; Wang Yong; Wu Aixiang; Yin Shenghua; Jin Fei;

  • 作者单位

    Univ Sci & Technol Beijing Sch Civil & Resource Engn Beijing 100083 Peoples R China;

    Univ Sci & Technol Beijing Sch Civil & Resource Engn Beijing 100083 Peoples R China|China Univ Min & Technol State Key Lab Coal Resources & Safe Min Xuzhou 221116 Jiangsu Peoples R China;

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