Method of recovering metals

US4242129A · kind A · utility

Assignee

• Klockner-Humboldt-Wedag AG · DE

Inventors

• Hans Kellerwessel · Aachen, DE
• Ernst Kausel · Lima, PE

Key dates

• Filing date: May 26, 1978
• Grant date: Dec 30, 1980
• Expiry date: May 26, 1998

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02P10/20
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

The leaching, precipitation and flotation method of recovering metals from ores is simplified by carrying out the leaching and precipitation steps simultaneously in the same reaction vessel. The method is particularly useful for recovering metals from low grade ores. During the leaching and precipitation step, mechanical comminution of the ore is also effected. The preferred reaction vessel is oscillated and the leaching and precipitation process is continuously effected by passage of the materials through the reaction vessel. The method is particularly suitable for recovering copper from oxygen containing copper ores.