Phosphate flotation using sulfo-polyesters

Details Phosphate flotation using sulfo-polyesters Phosphate flotation using sulfo-polyesters

1993-05-03

1994-05-24

Lithgow, Thomas M.

Classifying, separating, and assorting solids

Fluid suspension

Liquid

209167, 252 61, B03D 1016, B03D 102

Patent

active

053140737

ABSTRACT:
This invention relates to a process for beneficiating a silicious phosphate ore by flotation, the process comprising the steps of conditioning an aqueous slurry of phosphate ore at a pH of from 7.5 to 10.5 with a fatty acid and a fuel oil and aerating the conditioned phosphate slurry to float the phosphate, the improvement comprising conditioning the aqueous phosphate slurry prior to aeration with a water dispersible sulfo-polyester having a glass transition temperature of 28.degree. C. to 60.degree. C. and consisting essentially of repeat units from a dicarboxylic acid, a diol and a difunctional sulfomonomer.

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