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首页> 外文会议>International coal preparation congress 2010 conference proceedings >The Selection of Fine Coal Flotation and Dewatering Technology in a Coal Preparation Plant
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The Selection of Fine Coal Flotation and Dewatering Technology in a Coal Preparation Plant

机译：选煤厂精煤浮选脱水工艺的选择。

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摘要

Since current problems including high ash content of flotation clean coal, low ash content of tailing coal, low dewatering efficiency of flotation clean coal, high water content of filter cake and huge power consumption seriously affected the quality of clean coal product and the economic efficiency of enterprise, the recent situation of coal slime flotation and dewatering in China was analyzed; the existing problems of traditional flotation machine were studied; the dewatering difficulty and defects of traditional vacuum filter were also researched; FCMC cyclonic micro-bubble flotation column and fast clean coal filter press were invented and developed. The results show that there is a higher fall in ash content with the use of cyclonic micro-bubble flotation column. The clean coal ash content of flotation column is 1～1.5 percent lower than that of flotation machine under the same feeding condition, while the power consumption of flotation column can be as low as ½~⅔ of that of flotation machine with the same processing capacity. Additionally, the results also demonstrate that there is a higher dewatering efficiency with the utilization of fast clean coal filter press. The decrease in filter cake water content of fast clean coal filter press is 6–9% in comparison with that of vacuum filter press under the same feeding condition. Meanwhile, there is a saving of 60–70% in power consumption of fast clean coal filter press in contrast to the vacuum filter press with the same processing capacity. Moreover, the combination technology of flotation column and fast clean coal filter press has quite a lot of advantages—such as advanced technical parameters, smaller power consumption, significant energy saving, little maintenance and reliable and stable operation. Therefore, the combination usage of FCMC cyclonic micro-bubble flotation column and fast clean coal filter press is the optimum selection for coal slime flotation and dewatering of flotation clean coal and holds a beautiful and broad application prospect.
机译：由于目前存在的问题包括浮选精煤灰分高，尾矿煤灰分低，浮选精煤脱水效率低，滤饼含水量高以及耗电大，严重影响了精煤产品的质量和经济效益。企业分析了中国煤泥浮选和脱水的最新情况；研究了传统浮选机存在的问题；还研究了传统真空过滤机的脱水困难和缺陷。发明并开发了FCMC旋风微泡浮选塔和快速清洁煤压滤机。结果表明，使用旋风微泡浮选柱可降低灰分含量。在相同的进料条件下，浮选塔的净煤灰含量比浮选机低1〜1.5％，而浮选塔的能耗可低至相同处理能力的浮选机的1/2〜⅔。 。此外，结果还表明，利用快速清洁的煤压滤机可以提高脱水效率。在相同进料条件下，快速清洁煤压滤机的滤饼含水量降低了6–9％。同时，与具有相同处理能力的真空压滤机相比，快速清洁煤压滤机可节省60–70％的功耗。而且，浮选柱与快速清洁煤压滤机的组合技术具有很多优点，例如技术参数先进，能耗小，节能显着，维护少，运行可靠稳定。因此，FCMC旋风微泡浮选柱与快速清洁煤压滤机的组合使用是煤泥浮选和浮选清洁煤脱水的最佳选择，具有美丽而广阔的应用前景。

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