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

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%。

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.