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Title:
THE SYNTHESIS OF NEW ANIONIC SURFACTANTS AND THEIR USE AS COLLECTORS IN FROTH FLOTATION OF NON-SULPHIDIC ORES
Document Type and Number:
WIPO Patent Application WO/2015/000931
Kind Code:
A3
Abstract:
The present invention relates to the use of a compound obtainable by reacting an N-acyl neutral amino acid, or a salt thereof, or an N-acyl neutral amino acid oligopeptide or a salt thereof with a monohydroxy monocarboxylic acid, such as lactic acid or glycolic acid or a salt thereof, as a collector in a process for froth flotation of non-sulfidic ores, especially phosphate ores. The acyl group may have 7 to 23 carbon atoms and the amino acid may be selected from the group consisting of glycine, alanine, sarcosine, valine, leucine and isoleucine. The invention also relates to a method which comprises the steps of a) conditioning a pulped phoshate ore, wherein the phosphate ore comprises a calcium phosphate mineral or a mixture of such minerals, and gangue minerals, with an effective amount of a calcium phosphate mineral collector reagent, which is the above-mentioned compound, and optionally other flotation aids and b) performing a froth flotation process to recover the calcium phosphate mineral(s).

Inventors:
SMOLKO-SCHVARZMAYR, Natalija (Hjältebyvägen 79, Hjälteby, S-471 72, SE)
KLINGBERG, Anders (Ödsmål 145, Henån, S-473 93, SE)
Application Number:
EP2014/064014
Publication Date:
June 06, 2019
Filing Date:
July 02, 2014
Export Citation:
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Assignee:
AKZO NOBEL CHEMICALS INTERNATIONAL B.V. (Stationsstraat 77, MH Amersfoort, NL-3811, NL)
International Classes:
B03D1/016; B03D1/02; C08G63/685; C08G69/44
Domestic Patent References:
WO2013047458A12013-04-04
WO1998008597A11998-03-05
Foreign References:
DE1162305B1964-02-06
DD257398A11988-06-15
DE4105384A11991-08-29
Other References:
MARTINS M ET AL: "Surface tension of flotation solution and its influence on the selectivity of the separation between apatite and gangue minerals", MINERALS AND METALLURGICAL PROCESSING, CO, vol. 26, no. 2, 1 May 2009 (2009-05-01), pages 79 - 84, XP009174885, ISSN: 0747-9182
J.S. HANSON ET AL: "Interaction of glycine and a glycine-based polymer with xanthate in relation to the flotation of sulfide minerals", INTERNATIONAL JOURNAL OF MINERAL PROCESSING, vol. 23, no. 1-2, 1 May 1988 (1988-05-01), pages 123 - 135, XP055091966, ISSN: 0301-7516, DOI: 10.1016/0301-7516(88)90008-7
Attorney, Agent or Firm:
AKZO NOBEL IP DEPARTMENT (Association No. 485, Velperweg 76, BM Arnhem, NL-6824, NL)
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