Patent · US Expired

Method and kiln for calcining finely divided material

US3989446A · kind A · utility

12Cited by

8References

16Claims

0Family size

Assignee

Veitscher Magnesitwerke-Actien-Gesellschaft · AT

Inventors

Michael Grill · Overland, US
Helmut Grohmann · Leoben, AT

Key dates

Filing date	Mar 19, 1975
Grant date	Nov 2, 1976
Priority date	—
Expiry date	Mar 19, 1995

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC01F5/10
WIPO fieldMaterials, metallurgy
WIPO sectorChemistry

Abstract

An aqueous solution of magnesium chloride is sprayed into a kiln chamber where it is countercurrently heat treated by a stream of hot gas produced by flames projected into the chamber by burners. Calcined material is removed from the bottom of the kiln chamber and the hot gas stream and any treated material carried thereby is removed from the top of the chamber. Material carried by the hot gas stream is separated therefrom in a cyclone separator and the separated material is returned to the kiln chamber through a zone heated to a temperature in the range of the temperature in the kiln chamber.

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