Flotation apparatus and flotation method

US9475066B2 · kind B2 · utility

Assignee

• PRIMETALS TECHNOLOGIES GERMANY GMBH

Inventors

• Lilla Grossmann · Erlangen, DE
• Wolfgang Krieglstein · Roßtal, DE

Key dates

• Filing date: Oct 28, 2011
• Grant date: Oct 25, 2016
• Expiry date: Sep 26, 2032

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B03D1/16
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

A flotation apparatus may include a flotation chamber having a side wall and a base, a stirrer, a sparging device associated with the stirrer, a first foam-collecting device arranged in an upper region of the flotation chamber for the purpose of collecting a foam product formed during the flotation process, and a charge line for charging the flotation chamber with pulp, wherein the charge line leads into the flotation chamber at a point above the stirrer and an ejector is present in the charge line. Further, a flotation method is performed in two stages inside a flotation chamber of a flotation apparatus, wherein an ejector is used in a first flotation stage and a stirrer is used in a second flotation stage.