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US 10,913,810 B1Granted
Process and chemistry for reducing dolomite concentrations in phosphate processing
AssigneeArr-Maz Products, L.P.
InventorsLucas R. Moore, Todd Parker, Leon Willis
Life of this patent
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Abstract
A magnesium suppressant/flocculant for use in separating dolomite from calcium phosphate. The magnesium suppressant/flocculant may be applied at a mine site prior to subjecting ore fractions to phosphate flotation or at a chemical plant after grinding.
Claims4
A method of reducing dolomite concentrations in phosphate processing, the method comprising:
- adding a magnesium suppressant to phosphate-containing fractions;
- conditioning the fractions with fatty acid;
- and
- subjecting the fractions to a phosphate flotation;
- where the magnesium suppressant is a polymer comprising:
- a base monomer comprising acrylic acid, acrylamide, or a combination of acrylic acid and acrylamide;
- and
- a functional monomer comprising hydroxyl ethyl methacrylate, 2-acrylamido-2-methyl propane sulfonic acid, 3-allyloxy-1, 2-propanediol, and/or a derivative thereof.
5 more elements
Dependencies are inferred from the claim text.