The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 29, 1976
Filed:
Dec. 05, 1975
Applicant:
Inventors:
Raymond Limpach, Huncherange, LU;
Lucien Lorang, Differdange, LU;
Assignee:
ARBED Acieries Reunies de Burbach-Eich-Dudelange S.A., Luxembourg, LU;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C21B / ;
U.S. Cl.
CPC ...
75 42 ;
Abstract
Coal of a granulometry of 0.1 to 20 mm is injected into the blast-pipe manifold surrounding an iron-smelting blast furnace. The temperature of between 900.degree.C and 1300.degree.C in this manifold thermally disintegrates the coal by vaporizing volatile components such as water in the coal and reduces the coal to a mesh size of at most 1 mm. The fine particles of coal so produced are blown into the blast furnace through the tuyeres.