炉坪选煤厂在进行重介工艺改造以前一直采用跳汰加浮选工艺进行选煤加工，随着 设备的老化和煤质可选性的变差，该工艺很难满足市场发展对产品质量的需要，为提升 产品质量和企业的市场竞争力，对现有工艺进行技术改造就显得特别迫切。 根据对炉坪选煤厂的煤炭质量和现场条件进行综合分析，应用重介质选煤技术能够 有效解决该厂分选加工效率低下的难题。通过方案对比确定采用无压三产品重介旋流器 分选技术对炉坪选煤厂进行技术改造。设计并建造新的重介分选选煤系统，对原有原煤 系统、尾煤处理系统进行了改造，增加了集中控制和密度自动控制系统；通过改造项目 的实施和效果对比检验，、证明重介无压三产品旋流器分选技术在炉坪选煤厂的应用中收 到了预期的效果。

Lu ping coal prep删ion plant have been used the process of coal jigging combined wlth noa眦ion pmcess before the modification of coal preparation process using heavy medi啪 cyclone process．Along with the equipment aging and the possible of choose coaJ worsenmg， the current coal preparation process was very difficult to satisfy with the demand of coal mar．ket development．For improving the quality of products and competitive ablllty of ente印rises on the market，it is very urgent to modify the curient technology Process for the plant． On the b硒es of the analyzing，coal q砌ity and the current field conditions in the plant， me heavv medi啪preparation process is the best solution for effectively solving the problems of old technologY lied in the plant．The heavy medium cyclone process with恤ee products and晰恤ut pressure w嬲used to improve the current coal preparation process througll comparing different coal preparation processes．Design and construct the new coal heavy medi眦cyclone process system were designed and set up，and at the same time,the old mw coal svstem趾d coal、榔hing system were improved by assembling center controlling system 觚d denS埘auto．controlling system．It Was proved that the new coal prep龇atl∞process 1s efficient锄d撕ved predicting objective through actualization of the new pr0Ject and the comparisons of running effect of new process with that of old process·