Mineral collector compositions and processes for making and usin

Details Mineral collector compositions and processes for making and usin Mineral collector compositions and processes for making and usin

1998-05-27

2000-11-14

Lithgow, Thomas M.

Classifying, separating, and assorting solids

Fluid suspension

Liquid

252 61, B03D 101, B03D 1006, B03D 102

Patent

active

061456675

ABSTRACT:
Collector compositions of a mixture of a C.sub.6 to C.sub.22 fatty hydroxamic acid and an oil for use in the removal of impurities from mineral ores by the froth flotation method. The collectors are prepared by reacting an ester of a C.sub.6 to C.sub.22 fatty acid with a hydroxylamine salt and a base in the presence of an oil and water to produce an alkyl hydroxamate salt; acidifying the alkyl hydroxamate salt, forming an organic layer and an aqueous layer, wherein the organic layer contains a C.sub.6 to C.sub.22 fatty hydroxamic acid substantially free of starting esters and hydrolysis and transesterification products of the ester; and separating the organic layer from the aqueous layer to provide a collector composition of the C.sub.6 to C.sub.22 fatty hydroxamic acid and the oil.

REFERENCES:
patent: 3464784 (1969-09-01), Swanson
patent: 3933872 (1976-01-01), Hartlage
patent: 4629556 (1986-12-01), Yoon et al.
patent: 4834951 (1989-05-01), Schwab et al.
patent: 4871466 (1989-10-01), Wang et al.
patent: 5126038 (1992-06-01), Nagaraj
patent: 5237079 (1993-08-01), Wang et al.
patent: 5260039 (1993-11-01), Schwab et al.
patent: 5522986 (1996-06-01), Shi et al.
patent: 5632963 (1997-05-01), Schwab et al.
Dekun, Jingquig and Weizhi, Application of hydroxamic acid and hydroxamic--xanthate, collector system in metal ore flotation, Reagents in the Minerals Industry, edited by Jones and Oblatt, pp. 169-172, 1984.
XP-002109781 Derwent: SU-956022, Carbonate Silicide Phosphorite Ore Concentrate Alkyl Sulphonate Surfactant Specified Ratio Modified, Jul. 9, 1982.
XP-002109782/Derwent: SU-5139070, Alkyl Hydroxamic Acid Flotation Agent Produce Correspond Carboxylic Acid Alkali Separate Mineral Acid Hydrocarbon, Jul. 2, 1996.
XP-002109780 Derwent: Zho Weizhi, On the Flotation of Lean iron Ore with Hydroxamic Acid, Oct. 19,1985, pp. 248-249.
Fuerstenau and Pradip, Mineral Flotation with Hydroxamate Collectors, Reagents in the Minerals Industry, Ed. M.J. Jones and R. Oblatt, Inst. Min. Met., London, 1984, pp. 161-168.
Organic Synthesis, vol. 11, p. 67.
Gorlovski, et al., Vses. Soveshch. po Sintetich. Zhirozamenitelyam, Poverkhnostnoaktivn, Veschestvam i Moyushchim Sredstvam, 3rd, Sb., Shebekino, 1965, 297-9 Chem. Abst. 66, 4983g, 1967.
Shchukina et al., in Sin. Primen. Novykh Proverkh. Veshchestv, 1973, 123-31, C.A. 80, 1974, 95199K.
Russian Patent No. 390,074, Chem. Abst. 79, 115162C (1973).
Russian Patent No. 513,970, May 15, 1976, Chem. Abst. 85, 66277g, 1976.

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