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:
Mar. 03, 1981
Filed:
Aug. 23, 1979
John P Holt, Ladue, MO (US);
Theodore P Cash, Bonne Terre, MO (US);
Valley Mineral Products Corporation, St. Louis, MO (US);
Abstract
This disclosure involves a dry heat setting refractory and method of using same in the securing of nozzles to nozzle blocks in steel pour ladles. The refractory is sized so that it can be placed between the nozzle and nozzle block in a dry condition, and then forms an adhesive bond in situ, when molten steel is poured into the ladle and onto the refractory. The composition comprises a sized refractory material, preferably having MgO in the fines fraction, and includes the addition of about 2 to about 6% hydrated alkali silicate, preferably sodium silicate, which forms a refractory bond when engaged by the hot metal.