A comparative physicochemical study of hematite with hydroxamic acid and sodium oleate

A comparison of physicochemical properties of hematite ore with octyl hydro xamic acid and sodium oleate collectors has been made in order to describe the mechanism of interactions that control adsorption at the solid/liquid i nterface and to establish the relative selectivity and specificity. The phy sicochemical properties studied in this investigation, electrokinetics, ads orption, and microflotation, showed the preferential selectivity of octyl h ydroxamic acid over sodium oleate. The results exhibited some differences a nd similarities in their physicochemical behaviors by which the efficiency of adsorption onto hematite and other oxide surfaces can be qualitatively m odulated.