Apparatus for the comminution and grinding of brittle grinding stock, particularly of damp initial material

US4728044A · kind A · utility

Assignee

• Klockner-Humboldt-Deutz AG · DE

Inventors

• Helmut Duill · Cologne, DE
• Josef BRUMMER · Cologne, DE

Key dates

• Filing date: Oct 29, 1986
• Grant date: Mar 1, 1988
• Expiry date: Oct 29, 2006

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B02C23/18
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

For reducing the specific energy outlay in the grinding-drying of damp initial material, a circulating grinding system including a comminution machine, particularly an impact hammer, which is followed, via a sifter, by a high-pressure roll press operated in accord with the principle of product bed comminution, whereby the product admission of an impact hammer mill is connected to the feed for fresh initial material and the product discharge of a roll press is in communication with a product admission and/or with a product discharge of an impact hammer mill.