Smelting process for recovering metals from fine-grained non-ferrous metal sulfide ores or concentrates

US4740240A · kind A · utility

Assignee

• Voest-Alpine · AT

Inventors

• Horst Sulzbacher · Leoben, AT
• Werner Kepplinger · Linz, AT
• Erich Ottenschlager · Traun, AT

Key dates

• Filing date: Aug 2, 1985
• Grant date: Apr 26, 1988
• Expiry date: Aug 2, 2005

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02P10/134
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

In the smelting process of recovering metal from non-ferrous metal oxide ores or concentrates and/or from fine-grained non-ferrous metal sulfide ores or concentrates, particularly from non-ferrous heavy metal sulfide ores or concentrates, any sulfide ores are initially oxidized. The ores or concentrates are then supplied to a fluidized bed of coal in a melting gasifier (1). A certain particle size is maintained. Sulfide ores are supplied to a melting burner (2), which directs a flame jet into the fluidized bed of coal (FIG. 1).