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:
Nov. 16, 1993
Filed:
Nov. 25, 1992
Applicant:
Inventor:
David R Sundell, Pittsburgh, PA (US);
Assignee:
Indresco Inc., Dallas, TX (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C04B / ; C04B / ; C21B / ;
U.S. Cl.
CPC ...
501101 ; 501 97 ; 501109 ; 266280 ;
Abstract
A mix for forming a magnesite-carbon refractory shape comprising from about 70 to 97 wt. % deadburned magnesite and about 3 to 30 wt. % flake graphite, and for each 100 wt. % of said magnesite and graphite, from about 1.5 to 6 wt. % of a carbon-containing bonding agent; said graphite containing from 90 to 99 wt. % carbon and having a lime/silica ratio greater than 0.2 in its ash and said magnesite containing greater than 95 wt. % magnesia, and the resultant magnesite-carbon refractory shapes and liners for metal processing equipment made from such shapes and the method of increasing the life of liners for such equipment.