煤质因素对水煤浆性质的影响

采用多元线性回归分析的方法研究了煤质因素对水煤浆成浆性、流变性及稳定性的影响。并采用多元逐步回归分析的方法对影响水煤浆性质的煤质因素进行了综合分析，以确定影响水煤浆性质的主要煤质因素，并建立了相关的经验方程。结果表明，与煤成浆性有关的主要煤质因素为煤的碳质量分数、空气平衡水分、可磨性指数以及压汞仪所测煤的比表面积，复相关系数达0.988；与煤浆流变性有关的主要煤质因素为煤的灰分质量分数、煤中可溶矿物离子的溶出量、压汞仪所测煤的孔体积以及煤表面的动电位性质，复相关系数为0.917；与煤浆稳定性有关的主要煤质因素为煤岩显微组分分析中丝质组分的质量分数和煤灰成分分析中SiO2的质量分数，复相关系数为0.779。

Analysis of coal characteristics on the properties of coal water slurry preparation with different coal ranks

Twenty four Chinese coals with various ranks were used and systemically analysisd.The correlationships of the CWS properties including slurryability,rheological behaviour,and static stability with the coal properties were investigated by the plurality linear regression analysis and multivariate progressive regression analysis,respectively.The results show that the carbon content,the moisture content by air drying,the grindability index,and the surface area by Mercury Porosimeter are the main factors influencing the slurryability of CWS.The content of ash,the content of soluble mineral matters in CWS,the pore volume and the Zeta-potential properties of coal surface mainly affect the rheological behaviour of CWS.The content of inertinite in petrographic macerals and the content of SiO2 in coal ash are the major factors influencing the static stability of CWS.