Aiming at the problems of low coal preparation efficiency and poor quality of the existing dynamic screen jigging of coal preparation plant in Lilou Coal Industry,the screening and sorting characteristics and floating and sinking characteristics of high sulfur coal and low sulfur coal used in the coal preparation plant are studied.Combined with the used raw coal characteristics and product planning,the main selection of desliming jigging is proposed and coarse coal slime adopts a process of concentrated classification cyclone+spiral sorting equipment+high frequency vibration screening and sorting+coal slime high speed centrifugation+triplast high frequency screening joint recovering and fine coal slime flotation.The practical application of the coal preparation plant in Lilou Coal Industry shows that the flotation clean coal yield reaches 6.2％after optimizing,reducing water consumption in the production process by 17.6％,and can recover 36 600 tons more of clean coal annually,significantly improving the coal sorting efficiency and product quality of the coal preparation plant.
关键词
选煤厂/浓缩分级旋流器/高频振动筛分/煤泥浮选/分选工艺
Key words
coal preparation plant/concentration and classification cyclone/high frequency vibration screening and sorting/coal slime flotation/sorting process
维普
万方数据