【摘要】 细粒煤全氯乙烯分选是一种新颖的燃前分选工艺。本文采用全氯乙烯作为溶剂，对石台和七台河煤样进行了分选研究，取得了较好的效果。其中石台０．２５～０．０７４ｍｍ级别精煤在产率为７４．８５％时灰分最低，为１２．４４％，同级别七台河煤样产率为８０．２４％，灰分最低为６．６８％，同浮选结果相比，优于浮选。本文同时对分选机理及影响全氯乙烯分选的因素作了讨论更多还原

【Abstract】 The separation of fine coal by chloroethylene is a new separation process.The good results were obtained by the tests on the samples of shitai and Qitaihe by using perchloroethylene as solvent,When the yield was 74.85%,the ash content was the lowest with 12.44% in the concentrate of 0.250.074mm grade of Shitai samples.When the yield was 80.24%,the ash content was the lowest with 6.68% in the concentrate of 0.250.074mm grade of Qitaihe samples.Compared with the flotation results,the former is superior to the latter.The separation mechanism and the factors of affecting the perchloroethylene separation results were also discussed.更多还原