The properties of nickel concentrate and sulfur dispersing agents, including lignosulfonate, Quebracho, ortho-phenylenediamine (OPD) and humic acid, were investigated. The adsorption mechanism of sulfur dispersing agents on elemental sulfur and nickel concentrate was discussed. The effect of sulfur dispersing agents on dispersing molten sulfur was evaluated by the interfacial studies. Both organic materials and inorganic materials have the ability to change the sulfide mineral surface from sulfophilic to sulfophobic.The effect of sulfur dispersing agents on nickel extraction was evaluated in pressure leaching experiments conducted in a 2 L batch autoclave. The stability of sulfur dispersing agents was discussed.
展开▼
