摘要
通过对赵固一矿选煤厂原煤粒度组成、浮沉试验、可浮性评定和发热量的分析可知:原煤较脆,矸石易泥化,煤泥中存在高灰细泥,原煤块、末煤可选性均为易选。在分析原煤性质及产品定位的基础上,提出了选煤工艺设计原则,确定了末煤分选下限为1.5 mm,并可调节至0.25 mm和0;确定赵固一矿选煤厂选煤工艺流程为:80～13(10)mm块煤采用重介浅槽分选机主再选,13(10)～1.5 mm末煤采用脱泥有压三产品重介旋流器分选,1.50～0.25 mm采用TBS分选,-0.25 mm采用浮选柱分选。最后阐述了选煤厂选煤工艺设计步骤,即应以煤质分析为基础,以产品结构为目标,以设备特点为依托,同时特殊环节特殊关照,确定出最适合选煤厂煤质特征的选煤工艺流程,实现选煤设计的简洁、高效、灵活。
The analysis of raw coal size composition, float-and-sink experiments, flotability evaluation and calorific capacity show that,the raw coal is friable, gangue degrade easily,there are high ash fine mud in slime, raw coal and slack coal is easy to flotine. Based on the property of raw coat and products positioning, provide the coal preparation process,the lower limit of separation of slack coal is 1.5 mm, which could be adjusted to 0. 25 mm and 0. The primiary separation and recleaning of lump coal whose particle diameter ranges from 80 ram to 13 （10） ram adopts dense-medium shallow-slot separator, the preparation of slack coal whose particle diameter ranges from 13 （10）mm and 1.5 ram, 1.50 mm to 0. 25 ram,-0.25 mm respectively use three-product HM cyclone, TBS and flotation column. Introduce the design procedure of coal preparation. Taking coal analysis as basis, product mix as goal, according to the characteristics of facilities and specific links, determine the proper coal preparation process, which is concise ,effective and flexible.
出处
《洁净煤技术》
CAS
2012年第5期16-19,共4页
Clean Coal Technology
关键词
选煤工艺
煤质特征
产品结构
分选粒级
选煤方法
末煤
coal preparation process
coal quality
product mix
size range of preparation
coal preparation method
slack coal
