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US 10,961,382 B2Granted
Sulfonated modifiers for froth flotation
AssigneeEcolab USA Inc.
InventorsJianjun Liu, Kevin O'Brien, Daniel N. T. Hay
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Abstract
Improved sparge compositions for reverse froth flotation separation and uses thereof, and methods of reverse froth flotation are described. The sparge compositions comprise sulfonated polymeric modifiers which can act as dispersants and depressants, and the compositions are suitably used in the reverse froth flotation of particulate material containing ultrafine particles. For example, the compositions and methods can be used in the separation of iron oxide beneficiary from iron ores comprising silica, silicates, and the like.
Claims8
A sparge composition comprising:
- (i) a medium;
- (ii) a metal oxide ore comprising a gangue and a beneficiary;
- (iii) an amine collector;
- and
- (iv) a modifier comprising one or more sulfonated polymers, wherein at least one of the one or more sulfonated polymers
- (a) has a weight average molecular weight of from about 300 g/mole to about 100,000 g/mole,
- (b) comprises a residue of sulfonated vinyl alcohol, sulfonated acrylamide, sulfomethylated acrylamide, 2-acrylamido-2-methylpropane sulfonate, styrene sulfonate, or any combination thereof, and
- (c) further comprises a residue of acrylic acid, methacrylic acid, acrylamide, vinyl alcohol, maleic acid, a maleic acid ester, or any combination thereof,
- wherein the beneficiary comprises an iron oxide.
6 more elements
Dependencies are inferred from the claim text.