Improvement of lump coal yield in Longshan coal preparation plant
SONG Jingling
Abstract：In order to increase the lump coal yield in Longshan coal preparation plant,analyze the raw coal properties.The results show that,the raw coal is medium and high ash,extra low sulfur No.2 anthracite.There is less primary slime and the gangue is harder which is difficult to crush and grind.There is obvious degradation phenomenon.When lump coal ash is above 12%,the raw coal is easy to wash.The analysis of the process flow of coal preparation plant show that,low screening efficiency,frequent collision and high drop distance lead to low lump coal yield.To resolve these problems,replace the drum screen with linear vibrating screen,the raw coal bunker or lump coal point install spiral chute and take other measures to reduce coal breakage.After transformation,the lump coal yield increase by 1. 74%,the medi-um-sized lump coal increase by 0.51%,the small lump coal increase by 1.23%,the plant creates benefits 2.3868×106 yuan per year.
Keywords：lump coalyieldraw coal propertiesmedium-sized lump coalsmall lump coal
Publication Date：2014-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：4( 32-34,76 )