Adsorption of Dispersants on Australian Coals and Coal-Water Mixture Characteristics

抄録

Adsorption of dispersants on coal particles in coal-water mixture (CWM) has been analyzed by use of ion-selective electrode based on a lipophilic diphosphoniumsalt. Naphthalenesulfonate-formaldehyde condensate (NSF), polystyrenesulfonate (PSS), and polyisoprenesulfonate (PIPS) are used as dispersants.The adsorption on coals increases in the order PIPS<PSS<NSF. These dispersantsare more adsorbed on Warkworth coal than on Chibori coal. Relationshipbetween the adsorption of dispersants on coal particles and fluidity of CWM is discussed.