N-alkyl and N-alkenyl aspartic acids as co-collectors for the flotation of non-sulfidic ores

US4790932A · kind A · utility

Assignee

• Henkel Kommanditgesellschaft auf Aktien · DE

Inventors

• Beatrix Kottwitz · Erkrath, DE
• Wolfgang von Rybinski · Goldkronach, DE
• Rita Koester · Goldkronach, DE

Key dates

• Filing date: Dec 3, 1987
• Grant date: Dec 13, 1988
• Expiry date: Dec 3, 2007

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B03D2203/04
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

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.