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开滦煤矿年产原煤1700万t,其中有71％入洗,年产精煤560万t,随着精煤生产每年约产生60万t煤泥,煤泥灰分平均在35.5％,发热量一般为18000kJ/kg。过去处理煤泥的方法大都是采用煤泥池自然沉淀,人工挖掘,汽、马车外运,直接销售。由于自然脱水效率低,煤泥水分高,给用户、运输都带来很多困难,造成对环境的极大污染。为了提高企业的经济效益,回收利用资源,改善环境,针对上述问题我们加强了煤泥回收成型的研究。过去我们只注意煤泥的精选和粗煤泥的回收工作,而对细粒煤泥的回收工作还是从80年代才开始研究的。最早是1982年在马家沟洗煤厂安装了一台板框式压滤机,回收浮选尾煤,产品水分为21％左右,外销用于
Kailuan Coal Mine Annual output of 17 million tons of raw coal, of which 71% into the wash, with an annual output of 5.6 million tons of clean coal, with annual production of about 600,000 tons of coal slime, coal ash average 35.5%, average calorific value 18000 kJ / kg. In the past, most of the methods for treating slime were natural sedimentation using coal slime ponds, artificial excavation, direct sales by steam and carts. Due to the natural dehydration efficiency is low, slime moisture, to the user, transportation has brought many difficulties, causing great pollution to the environment. In order to improve the economic efficiency of enterprises, recycling of resources, improve the environment, in view of the above problems we have strengthened the study of slime recovery molding. In the past we only pay attention to the selection of slime and coarse slime recovery work, and the recovery of fine slime or from the 80’s began to study. As early as 1982, a plate-frame filter press was installed at Majiagou Coal Preparation Plant to recover the flotation tailings. The water content of the product was about 21%