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Abstract
The interaction of octyl hydroxamic acid/salt with cassiterite has been studied using adsorption, electrokinetic and infrared spectroscopic techniques. Results indicate that the surfactant sorbs on the mineral surface by relatively weak forces, both specific and physical in nature. Adsorption was greater in the acidic pH region than in the alkaline pH, implying the involvement of hydroxamic acid molecule and hydroxylated cassiterite of the type-Sn(OH), in the sorption process. Electrokinetic and FTIR studies confirmed the involvement of specific forces of interaction in the sorption process. Based on the experimental observations, the possible modes of sorption are discussed.
