Application of respones surface meth odology on impor vement fo S henf u coal slurryability
QU Jianlin
ZHANG Dongdong
ZHOU Anning
GONG Ming
YU Wei
SONG Chengjian
Abstract：Shenfu coal was difficult to prepare high-concentration low-viscosity coal water slurry ( CWS) due to its low ash,low sulfur and high inherent moisture.In order to resolve the problems,taking mass fraction of 12 μm and 6.5 μm ultra-fine coal,compound dispersant as research factors, a regression equation about viscosity was obtained by variance analysis and Box-Behnken.Through response sur-face methodology ( RSM) ,the influence of three factors on CWS viscosity were analyzed,the experimental results were also optimized.The optimum formula was that,the mass fraction of 12 μm and 6.5 μm ultra-fine coal was 55% and 35% respectively,the dosage of com-pound dispersant was 1.04 g,and the predicted viscosity was 918.65 mPa· s.Keeping the concentration of CWS unchanged,the improving experiment was conducted according to the optimum formula,the viscosity of CWS reduced from 1975 mPa· s to 1066.67 mPa· s.The stability and rheological property of CWS were improved significantly.
Keywords：Shenfu coalcoal water slurryviscosityparticle size gradationresponse surface methodology
Publication Date：2015-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：5( 15-19 )