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

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.