Process to treat metal or mineral ores and collector composition therefor
AssigneeNouryon Chemicals International B.V.
InventorsAndrew Clist Lewis, Willem Hendrikus Baan
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Abstract
A process to treat metal or mineral ores is disclosed. The metal or mineral ore is a metallic sulphide ore including copper, gold, platinum, silver, nickel, molybdenum, arsenic sulphides, cobalt, zinc, lead, tin, antimony, or combinations thereof with a collector composition including a dimeric fatty nitrile. The dimeric fatty nitrile is prepared by a process including reacting a dimer fatty acid with ammonia at a temperature between about 200° C. and about 400° C. to form a dimeric amide and removing water from the dimeric amide to form the dimeric nitrile. The present disclosure also provides a collector composition containing the dimeric fatty nitrile and at least one further collector or frother compound.
Claims20
A method to treat metal or mineral ores, wherein the metal or mineral ore is a metallic sulphide ore including copper, gold, platinum, silver, nickel, molybdenum, arsenic, cobalt, zinc, lead, tin, antimony, or combinations thereof with a collector composition comprising a dimeric nitrile, wherein the dimeric nitrile is obtainable by a process comprising:
- reacting a dimer fatty acid with ammonia at a temperature between about 200° C. and about 400° C. to form a dimeric amide;
- and
- removing water from the dimeric amide to form the dimeric nitrile.
A collector composition comprising:
- as component (a), from 1% by weight to 99% by weight of a dimeric nitrile compound obtainable by a process comprising:
- reacting a dimer fatty acid with ammonia at a temperature between about 200° C. and about 400° C. to form a dimeric amide;
- and
- removing water from the dimeric amide to form the dimeric nitrile compound;
- wherein the dimeric nitrile compound has the general formula (I):
- wherein R1, R2, R3, and R4 are saturated or unsaturated, aliphatic or aromatic, linear, cyclic or branched, hydrocarbon groups, each group independently including from 3 to 14 carbon atoms, and wherein the degree of unsaturation of the dimeric nitrile compound is from 0.1 to 0.5, and
- as component (b), from 1% by weight to 99% by weight of a collector selected from xanthates, dithiophosphates, thionocarbamates, thiocarbamates, alkynes, mercaptobenzylthiazoles, monothiophosphates, dithiophosphinates, hydroxamates, and combinations thereof or a frother selected from phenols, alkyl sulfates, C5-C8 cyclic alcohols, alkoxyalkanes, polypropylene glycol ethers, polyglycol ethers, polyglycol glycerol ethers, pyridine base, natural oils, mixed ethers, ethoxylated alcohols, and combinations thereof.
Dependencies are inferred from the claim text.