DADMAC/vinyl trialkoxysilane copolymers for dewatering copper and taconite slurries in the mining industry
US5597475A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 28, 1995 |
| Grant date | Jan 28, 1997 |
| Priority date | — |
| Expiry date | Jul 28, 2015 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D21/01
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A method for dewatering mineral slurries employing a copolymer of diallyldimethlylammonium halide and a vinyl alkoxysilane, which is preferably a copolymer of diallyldimethylammonium chloride and vinyltrimethoxysilane as a coagulant is disclosed. The method for dewatering mineral slurries containing water comprising the steps of: feeding said mineral slurry into a thickener, treating said mineral slurry with an effective amount of a coagulant which comprises a copolymer of halide and a vinyl alkoxysilane; allowing the water to separate from the mineral slurry, withdrawing the water from said thickener and discharging said mineral products from said thickener. Mineral slurries which can be effectively treated are copper and taconite. The above-mentioned method may also include treatment with a flocculant in conjunction with the coagulant.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.