Problem analysis and improvement measures of high coal slime water concentration
NING Shimao
Abstract：Coal slime water concentration was the main factor affecting the medium drainaging and clean coal quality,it also played impor-tant role in guiding flotation.In order to decrease the coal slime water concentration in Tunlan coal preparation plant,this paper analyzed the production flow.The results showed that,poor recycling effects of high frequency vibrating screen,unreasonable flocculant addition, large water from concentrated machine,leakage of coarse slime through the sieve plate and sieve basket of dense medium system were the main influencing factors.To resolve the above problems,the author prepared 0.1% flocculant by adjusting the electriccurrent of overflow ranging from 280 A to 310 A,decreased the equipment bottom coal thickness and other technical schemes.After transformation,the concen-tration of coal slime water was below 13 g/ L,the products yield were improved.The transformation saved the energy and decreased the pol-lutant emissions.
Keywords：coal slime waterconcentrationoverflowflocculant
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：3( 86-88 )