Patent · US Expired

Method and apparatus for treating a layer of bulk material

US7156223B2 · kind B2 · utility

3Cited by

12References

18Claims

0Family size

Assignee

Claudius Peters Technologies GmbH · DE

Inventors

Hartmut Meyer · Bleckede, DE
Thomas Staak · Hamburg, DE
Archibald Wallace · Hamburg, DE
Helmut Wallis · Henstedt-Ulzburg, DE

Key dates

Filing date	Nov 2, 2005
Grant date	Jan 2, 2007
Priority date	—
Expiry date	Nov 2, 2025

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB65G2201/04
WIPO fieldThermal processes and apparatus
WIPO sectorMechanical engineering

Abstract

The invention includes a method and an apparatus for treating, in particular cooling, a layer of bulk material by means of a stream of gas passed through it on a grate. The grate includes a plurality of elongated planks which extend in a conveying direction and are driven in advancing and return strokes in the conveying direction in such a manner that at least two adjacent planks are moved forwardly simultaneously and are moved backwardly non-simultaneously. Since the material located on a plank which is being moved back is prevented from completely following the plank moving back by the friction generated with the material located above the adjacent planks or with the wall, the conveying effect in the conveying direction outweighs the conveying effect in the opposite direction.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.