Process for disaggregating waste materials which contain at least partially reusable elements

US6216967A · kind A · utility

Assignee

• DER GRÜNE PUNKT—DUALES SYSTEM DEUTSCHLAND GMBH · DE

Inventors

• Heinz Hoberg · Aachen, DE
• Joachim Christiani · Aachen, DE
• Michael Langen · Aachen, DE
• Martin Bender · Naperville, US

Key dates

• Filing date: Jun 1, 1999
• Grant date: Apr 17, 2001
• Expiry date: Jun 1, 2019

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02W30/62
• WIPO field: Other special machines
• WIPO sector: Mechanical engineering

Abstract

A process is disclosed for disaggregating waste materials which contain at least partially reusable elements, mainly metals, plastics and cardboard. The waste materials are stirred in water by mechanical forces, large pieces, in particular plastic pieces, are coarsely crushed and soluble elements, in particular cardboard, are dissolved. The metallic elements are separated from the suspension as heavy materials, the remaining coarse solids, in particular plastics, are mechanically separated from the suspension, and the suspended fine solids are separated from the suspension by dewatering.