Patent · US Expired

Method and apparatus for calcining limestone in a shaft kiln

US4414186A · kind A · utility

2Cited by

10References

9Claims

0Family size

Assignee

Klockner-Humboldt-Deutz AG · DE

Inventors

Martin Schmidt · Crawley, GB
Walter Kohler · Bischofswerda, DE
Hans-Ulrich Loch · Bochum, DE
Albrecht Weber · Hilchenbach, DE

Key dates

Filing date	Apr 22, 1982
Grant date	Nov 8, 1983
Priority date	—
Expiry date	Apr 22, 2002

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC04B2/12
WIPO fieldMaterials, metallurgy
WIPO sectorChemistry

Abstract

A method and apparatus for calcining minerals, particularly limestone, in a shaft kiln having at least two vertically spaced levels including cooled hollow supports through which a solid fuel is introduced into the kiln. One feature of the present invention resides in employing a granular coal as the fuel while other features are involved with the distribution of fuel between various inlet points, suspension of the fuel in an airstream, and the mechanical construction of the fuel conduits and their support located within the shaft kiln.

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