Measures of improving clean coal yield in Tianzhuang coal preparation plant
LI Maogang
Abstract：In order to improve the clean coal yield,the problems with the equipment and process of Tianzhuang coal preparation plant are analyzed.The coarse slime system,flotation system and slack coal treatment system were transformed.The specific measures were as follows. The water from coarse slime desliming sieve to coarse slime separator was diverted.The raw material barrel of separator with pyramid pool which was improved constantly was replaced,a current stabilizer and an overflow groove were installed,the coal water mixture distribution barrel was optimized,a regulator was added,the feeding pipe of coarse slime square pool and sprinkler system of coarse slime sieve were transformed,the feeding size of dense medium cyclone was homogenized.After transform,the yield of feeding ranging from 0.50 mm to 0.25 mm was increased by 3.27%,the yield of feeding below 0.25 mm was decreased by 2.94%.After transformed,for flotation system,the ash of clean coal was decreased by 0.43%,the clean coal yield and recovery efficiency were increased by 6.01% and 0.21%.After treated by dense medium cyclone,the clean coal yield and recovery efficiency were increased by 6.15% and 3.61%.
Keywords：clean coal yieldcoarse slimeflotationslack coalrecovery efficiencydesliming screen
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( 76-79 )