Process for reclaiming bentonite and carbon particles from used foundry sand

US5163562A · kind A · utility

Assignee

• Georg Fischer LLC · CH

Inventors

• Ludwig Wilhelm · Engen, DE
• Peter Rossmanith · Baden, AT

Key dates

• Filing date: Nov 25, 1991
• Grant date: Nov 17, 1992
• Expiry date: Nov 25, 2011

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S241/10
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

A process for separating bentonite and carbon carrier particles from an air-dust mixture generated from a mechanical used-sand reclamation unit and, more particularly, a process as aforesaid wherein the bentonite and carbon carrier particles are recycled to a foundry sand preparation unit.