煤质因素对水煤浆性质的影响

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.