Modified alcohol frothers for froth flotation of sulfide ore
US4678563A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | May 7, 1985 |
| Grant date | Jul 7, 1987 |
| Priority date | — |
| Expiry date | May 7, 2005 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB03D2203/02
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Disclosed is a process for the concentration of sulfide ore wherein an aqueous slurry of sulfide ore particles are subjected to sulfide ore froth flotation under sulfide ore froth flotation conditions. The improvement in process comprises using an effective amount of a frothing agent selected from the group consisting of: PA0 (a) the reaction product of a C.sub.5 -C.sub.10 diol and a C.sub.1 -C.sub.7 carboxylic acid; PA0 (b) the reaction product of a C.sub.5 -C.sub.10 diol and an acrylonitrile; PA0 (c) the reaction product of a C.sub.2 -C.sub.4 alkylene oxide and a C.sub.1 -C.sub.7 carboxylic acid; PA0 (d) the reaction group of a C.sub.2 -C.sub.4 alkylene oxide and a C.sub.5 -C.sub.10 diol; PA0 (e) the reaction product of a C.sub.2 -C.sub.4 alkylene oxide and an acrylonitrile; and PA0 (f) mixtures thereof, the resulting modified alcohol frothing agents have at least one hydroxyl group thereon. The modified alcohol frothing agents of the present invention provide improved flotation kinetics and selectivity in the sulfide ore float.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.