煤泥真相对密度与其灰分正相关性的再次验证

Re-verification of positive correlation of coal slime density and ash content

拟据大屯选煤厂的水力分级旋流器入料及产物各粒级11个煤泥煤样的试验数据,以再次验证煤泥密度与其灰分之间具有极为显著的正相关关系,并建立相应的回归方程。经分析对比可知,大屯选煤厂原料煤的密度与灰分的回归方程,其斜率与煤泥回归方程的斜率之间相对差值不大,在一般的工程应用计算中可用煤炭的回归方程预测煤泥密度与灰分之间的关系。

According to the experimental data of 11 coal slime samples from each particle size of feed and product of hydraulic power classifying cyclone in Datun coal preparation plant,the re-verification of obvious positive correlation of coal slime density and ash was done,the regression equation was established as well.Through the analysis and comparison,there is no significant difference between the slope of regression equation with density and ash of raw coal by compared with coal slime.It could be used for the prediction of relationship between coal slime density and ash content in the general engineering application calculation.