N-alkyl and N-alkenyl aspartic acids as co-collectors for the flotation of non-sulfidic ores
AssigneeHenkel Kommanditgesellschaft auf Aktien
InventorsBeatrix Kottwitz, Wolfgang von Rybinski, Rita Koester
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Abstract
Use of N-alkyl and/or N-alkenyl aspartic acids or salts thereof as co-collectors in the flotation of non-sulfidic ores and a process for the separation of non-sulfidic ores by flotation wherein N-alkyl and/or N-alkenyl aspartic acids or salts thereof are used in collector mixtures.
Claims18
In a process for the froth flotation of non-sulfidic mineral-containing ores, the improvement comprising the use, as a flotation agent, of an anionic and/or nonionic collector surfactant in conjunction with at least one N-alkyl and/or N-alkenyl aspartic acid or salt thereof as a co-collector, in an amount sufficient to selectively concentrate the non-sulfidic mineral in the froth.
A process for the separation of a mineral-containing non-sulfidic ore by froth flotation comprising the steps of:
- (a) mixing the non-sulfidic ore in ground form with water to form a suspension;
- (b) forming a froth by introducing air into the suspension in the presence of a collector mixture containing an anionic and/or nonionic collector surfactant in conjunction with at least one N-alkyl and/or N-alkenyl aspartic acid or salt thereof as co-collector, in an amount sufficient to selectively concentrate the non-sulfidic mineral in the froth;
- and
- (c) removing the mineral-containing froth.
Dependencies are inferred from the claim text.