Patent · US Expired

Method and apparatus for calcining lime

US4483831A · kind A · utility

11Cited by

10References

8Claims

0Family size

Assignee

Klockner-Humboldt-Deutz AG · DE

Inventors

Martin Schmidt · Crawley, GB
Walter Kohler · Bischofswerda, DE
Andris Abelitis · Hoffnungsthal, DE

Key dates

Filing date	Jul 27, 1982
Grant date	Nov 20, 1984
Priority date	—
Expiry date	Jul 27, 2002

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC04B2/10
WIPO fieldMaterials, metallurgy
WIPO sectorChemistry

Abstract

A method and apparatus for calcining lime, dolomite or similar materials in which the raw material to be calcined is preheated in a preheating zone by exhaust gases from a calcining zone, cooled by means of combustion air in a cooling zone, the combustion air passing from said cooling zone into said calcining zone and then into the preheating zone. A specific improvement of the invention resides in adding fuel in the calcining zone at a plurality of spaced locations along the calcining zone in the direction of flow of the combustion air therethrough.

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