JI Yinghua;ZHANG Zhenhong;Yongcheng Coal Company,Henan Energy and Chemical Industry Group;To improve the separation effects of anthracite,taking Nuodong mine as research object,analyze the coal quality characteristics,size composition,washability and floatability. The results show that the raw coal is low and low-medium ash,high-medium and high sulfur,low phosphorus,extra-low anti-breaking strength anthracite,the sulfur in coal is in the form of inorganic iron sulfide. Higher fine coal determines that its separation needs to be strengthened,the coarse slime can be individually sorted,the products are easy to dehydrate,the coal washability is medium optional. Combined with the properties of raw coal,determine the product positioning of Nuodong coal preparation plant is that,the seventeenth coal separation lump coal is used in coal chemical industry,clean coal is used in blast furnace blowing. The twentieth coal separation lump coal is used in coal chemical industry,clean coal is used in pulverized coal injection into blast furnace. Through analyzing the features of the common preparation methods and process,determine the anthracite sorting scheme in Nuodong coal preparation plant. Before separation,treat the + 100( 80) mm size with hand picking method,separate the-100( 80) mm size with jigging,coarse slime with teetered bed separator,select the fine slime with flotation,concentrate the tailings by filter pressing.
2014 04 v.20;No.92 [Abstract][OnlineView][Download 122K]