ABSTRACT
Surfactants are used to make the Coal Water Slurry (CWS), a coarse sized dispersed system, to be stable. Coal is a complicated matter which consists of high molecular compound and different minerals so the effect of minerals on CWS can not be neglected. In order to analyze the effect of the physical-chemistry property of minerals on CWS the adsorption of additives such as condensed naphthalene sulphonic acid (add-1), multi-acid copolymer (add-2), PCA (add-3), sulfonated humic acid (add-4), and sulfonated xylem element (add-5) on the surface of minerals and the change rule of ζ-potential of the surface of minerals and coal were researched. At the same time the microcalorimeter was used to analyze the mechanism of adsorption of additives.
