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:
Jan. 30, 1990
Filed:
May. 10, 1989
Applicant:
Inventors:
Karl Gut, Benken, CH;
Ivo Henych, Stetten, CH;
Assignee:
Georg Fischer AG, Schaffhausen, CH;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C21C / ;
U.S. Cl.
CPC ...
420 23 ; 75 53 ; 75 58 ;
Abstract
A process for treating molten cast iron in an open ladle by means of pure magnesium is proposed, wherein the pure magnesium is introduced in a multiplicity of very small magnesium particles, coated with a protective layer, into the molten cast iron. The protective layer, which protects the magnesium from premature melting and controls the reaction rate, is produced from ceramics. The process can be carried out with very simple equipment. Involved pretreatments of the treatment agent are unnecessary.