Two-liquid flotation of fine oxide particles with 8-hydroxyquinoline

The two-liquid flotation of fine oxide particles has been investigated usin g a chelating-type collector of oxine and the isooctane-water two-liquids s ystem. The recovery was enhanced in a certain pH range. The oil-floatabilit y during two-liquid flotation was concerned with the oxine adsorption on th e solids. In addition, solution-chemical calculations indicated that the re activity of the metal cation with oxine based upon a surface precipitation mode was closely related to the adsorbability of oxine and, hence, to the o il-floatability of the solids. Also, the possible conditions for collection by two-liquid flotation were experimentally determined and were related to the solution-chemical criterion.