Method of regulating a flotation system with a primary and secondary stage

US5330655A · kind A · utility

Assignee

• J.M. Voith GmbH · DE

Inventors

• Peter Schweiss · Langenau, DE
• Hans-Dieter Dorflinger · Heidenheim, DE

Key dates

• Filing date: Jul 30, 1993
• Grant date: Jul 19, 1994
• Expiry date: Jul 30, 2013

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B03D1/1462
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

The invention is directed to a method of regulating a flotation system having an inflow quantity of suspension flow dependent on production demands, including a primary flotation stage and a secondary flotation stage where the secondary flotation stage treats the froth of the primary stage, transporting de-aereated froth from the primary flotation stage to a collection vessel which is in fluid communication the secondary flotation stage; recycling suspension flow from the secondary flotation cells of the secondary flotation stage in part to an inlet of the primary flotation stage, and in part to an inlet of the secondary flotation stage, and regulating the level of de-aereated froth in the collection vessel by controlling the amount of suspension flow recycled from said secondary flotation stage to the inlet of the secondary flotation stage.