针对传统两产品液固流化床有效分选粒度范围窄和高灰细泥污染精煤的问题,开发出一种新型内外室三产品液固流化床。分析2种液固流化床的对比试验结果,发现新型内外室三品液固流化床使用不同上升水流实现粗煤泥两次分选,产品中精煤灰分降低了2.80%,尾煤灰分提高了18.97%,明显改善分选效果。 In view of the problem that the traditional two-product liquid-solid fluidized bed has an effective separation range of narrow particle size and high fine silt to pollute the clean coal, a new liquid-solid fluidized bed with three products inside and outside the chamber was developed. The results of two kinds of liquid-solid fluidized bed tests showed that the ash content of the products decreased 2.80% and the tail ash content increased 18.97%, significantly improve the sorting results.