Patent · US Expired

Method and apparatus for the heat treatment of fine-grained material

US4579526A · kind A · utility

5Cited by

2References

10Claims

0Family size

Assignee

Krupp Polysius AG · DE

Inventors

Wilfried Kreft · Beckum, DE
Horst Kretzer · Frankfurt am Main, DE
Heinz-Werner Thiemeyer · Ennigerloh, DE

Key dates

Filing date	Nov 5, 1984
Grant date	Apr 1, 1986
Priority date	—
Expiry date	Nov 5, 2004

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC04B7/43
WIPO fieldMaterials, metallurgy
WIPO sectorChemistry

Abstract

The invention relates to a method and apparatus for the heat treatment of fine-grained material wherein a precalcination zone formed by the kiln exhaust gas duct of a rotary kiln and into which two branch streams of cooling air which have been subjected to opposing rotational flow are introduced. In this way an equalization of the speed profile over the cross-section of the kiln exhaust gas duct and an improvement in the burning up of the fuel is achieved.

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