高灰难选粗煤泥再选工艺在吕临能化选煤厂的应用

Application of the difficult-to-treat high-ash coarse slime rewashing system of Lyulin Energy Chemical Coal Preparation Plant

摘要: 介绍了高灰难选粗煤泥再选工艺在吕临能化选煤厂应用。实践表明，入料灰分在55%～60%的高灰粗煤泥通过螺旋分选机再选，可回收物料的中煤资源，中煤产率为53.47%，中煤产率增加了3.21个百分点，经济效益显著。利用螺旋分选机分选密度高的特点实现了高密度排矸，可将尾矿灰分为75%以上物料作为固体废弃物，数量效率达到了95.39%。

Abstract: Practical use of the difficult-to-treat high-ash recleaning system shows that with the use of spiral separator to retreat the slime with a high ash of 55%～60%, a middlings product with a recovery of 53.47% can be obtained, and the yield of the product is seen to rise by 3.21%, bringing about a noticeably favorable economic result. With the use of the separator for making high-density separation of dirts, the organic efficiency can reach 95.39% and the ash of tailings can be increased to be over 75%, which can be disposed of as solid waste.