Feasibility of high-volatile non-caking coal as pulverized coal injection
WANG Jian
FAN Fusuo
CAI Liebang
Abstract：The problems with Zhuzhou Clean Coal Company were that,the coking coal was shortage and the variety of products were mono-tonic.Based on the properties of raw coal,transformed the coal separation process.Investigated the feasibility of high-volatile non-caking coal as pulverized coal injection.The yield and ash of primary slime was low,so the separation process without desliming was suitable.The raw coal was easy to separate,the accumulated ash of-1.80 g/cm3 floats is 4.00%,so the middlings was imported into clean coal transpor-tation system.Transformed the process by importing the water from gangue into radiant thickener,adding water injection pipelines and noz-zles to clean coal sieve,importing the filtrate from clean coal pressure filter to flotation system,determining the dosage of compound agents,adding polyaluminum chloride automatically before filtering tailings,installing one set of automatic dosing system. The medium consump-tion,moisture and ash decreased by 0.2 kg/t,0.70% and 0.32%.The clean coal yield increasesd by 3.50%,the moisture of tailings de-creased by 9.70%,the profits of company rose by RMB 5×106 to 107.
Keywords：pulverized coal injectionhigh volatilenon-caking coalvariety of productsflotation
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( 59-62 )