This study examines main and interaction effects of frother type, collector and pH on the
efficiency of column flotation of Florida phosphate. Two types of frothers are used including
sodium alkyl ether sulfate, as an anionic frother, and mixed polyglycols as a nonionic frother.
A mixture of fatty acid and fuel oil is used as a collector. The results show that column
flotation, depending on the operating conditions, can give phosphate concentrates of high
grade (∼ 31% P2O5) at a recovery as high as (∼ 99%). However, interaction between …