Froth flotation of insoluble slimes from sylvinite ores

US4192737A · kind A · utility

Assignee

• The United States of America, as represented by The Secretary of The Interior · US

Inventors

• Philip Thompson · Salt Lake City, US
• Jerry L. Huiatt · Murray, US
• Don C. Seidel · Salt Lake City, US

Key dates

• Filing date: Sep 15, 1978
• Grant date: Mar 11, 1980
• Expiry date: Sep 15, 1998

Classification

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

Abstract

Sylvinite ores are treated for removal of insoluble slimes by a froth flotation technique which includes flocculating the slimes with nonionic or polyacrylamide flocculants and thereafter utilizing a nonionic or an anionic flotation collector including a mixture of fuel oil or a fatty acid and a defoamer of the glycol ester or polyglycol ester type. The flocculated slimes may also be floated with a fatty acid collector alone at low pH conditions.