| 摘要 |
HOE 90/F 084 of the disclosure Process for the selective flotation of phosphorus minerals The process for the selective flotation of phosphorus minerals, wherein a mixture of a compound of the formula 1a and/or 1b (1a) and/or (1b) in which R1 is branched or unbranched C8-C24-alkenyl, R2 is branched or unbranched C1-C4-alkyl and M is hydrogen, ammonium, triethanolammonium, an alkali metal atom or an alkaline earth metal atom, and of one or more of the following compounds (2) (3) (4) (5) (6) (7) (8) (9) R - N - ¢CH2 - PO(OH)2!2 (10) R - CO - NH - OM (11) R - COOH (12) R - SO2NH - CH2COOM (13) and petroleumsulfonates R'SO3M (14) in which the individual symbols are as defined in the description, is added as a collection agent to the flotation pulp. |
