Method For Treating Phosphate Ores Containing Heavy Metals By Reverse Flotation

Abstract

The present disclosure relates to a method for treating phosphate ores containing heavy metals by reverse flotation. The method comprises adding, to an aqueous suspension of phosphate ore, a monophosphoric ester A of formula (I), R1—O—P(═O)—(OH)2 (I), wherein R1 is a saturated or unsaturated, linear or branched hydrocarbon chain comprising 6 to 10 carbon atoms, preferably an alkyl group, alone or mixed with a compound B chosen from the group consisting of a monophosphoric ester of formula (II), R2—O—P(═O)—(OH)2 (II), wherein R2 is a saturated or unsaturated, linear or branched hydrocarbon chain comprising 6 to 18 carbon atoms, preferably an alkyl group, different from the group R1 of the monophosphoric ester A of formula (I), an alcohol, a fatty acid, a fixed oil, a sulphate, a sulphonate, an ether and mixtures thereof.

Dependencies are inferred from the claim text.