Abstract:
A comparison of physicochemical properties of hematite ore with octyl hydroxamic acid and sodium oleate collectors has been made in order to describe the mechanism of interactions that control adsorption at the solid/liquid interface and to establish the relative selectivity and specificity. The physicochemical properties studied in this investigation, electrokinetics, adsorption, and microflotation, showed the preferential selectivity of octyl hydroxamic acid over sodium oleate. The results exhibited some differences and similarities in their physicochemical behaviors by which the efficiency of adsorption onto hematite and other oxide surfaces can be qualitatively modulated.