Patent · US Expired

Aluminum dross reclamation

US4523949A · kind A · utility

7Cited by

6References

4Claims

0Family size

Assignee

Combustion Engineering, Inc. · US

Inventors

Irving W. Gower · Berwyn, US
Carl J. Cherry · King of Prussia, US
David Yang · Shanghai, CN

Key dates

Filing date	Sep 30, 1982
Grant date	Jun 18, 1985
Priority date	—
Expiry date	Sep 30, 2002

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC01P2006/80
WIPO fieldMaterials, metallurgy
WIPO sectorChemistry

Abstract

Aluminum dross containing chlorides and combustible volatile material is agglomerated and sized to produce a compact which is then treated in a direct fired rotary kiln in excess of 1800.degree. F. to volatilize the chlorides and burn the combustible volatile material and to produce a refractory material. The flue gases containing the volatilized chlorides are then treated in a condenser where the chlorides are condensed out of the remaining flue gases. The refractory product from the kiln may be passed through a cooler wherein the heat is transferred to the combustion air.

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