燕龛选煤厂选煤工艺的确定

摘要

根据燕龛选煤厂入选9号、15号煤层原煤高灰、低水、中硫、低发热量，末原煤（－13 mm）灰分偏低，发热量大于20929 kJ/kg等特性，进行了工艺比较，确定其选煤工艺为：200 mm～13 mm级块煤采用重介浅槽排矸；13 mm～0 mm级末煤不分选；3 mm～0.2 mm级粗煤泥采用弧形筛＋煤泥离心机回收；0.2 mm～0 mm级细煤泥采用压滤机回收。%ABSTRACT:According to the coal quality features of high ash, medium sulfur, low moisture and low calorific value of raw coal, as well as lower ash content and high calorific value(>20 929 kJ/kg)of pulverized raw coal(-13 mm) from No.9 and No.15 coal beds of Yankan Coal Cleaning Plant, this paper carries out a processes comparison, and determines the coal preparation process, that is the 200 mm~13 mm level lump coal is separated by dense medium and shallow trough separator for gangue removing, 13 mm~0 mm level pulverized coal is not separated, 3 mm~0.2 mm level coarse coal slime is recoveried by using the arc sieve+centrifuge, the 0.2 mm~0 mm level fine coal slime is recoveried by using press filter.