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. 06, 1995
Filed:
Apr. 15, 1994
Subrata Banerjee, Wheaton, IL (US);
Michael W Anderson, Bloomingdale, IL (US);
Magneco/Metrel, Inc., Addison, IL (US);
Abstract
A granular castable refractory composition is provided which has excellent insulating properties as well as high strength and resistance to oxidation, corrosion or erosion. The refractory insulating composition can be easily transported using a pump, and avoids the potential hazards associated with asbestos and ceramic fibers. The refractory insulating composition is prepared by mixing a low density expanded granular refractory insulating material having a density of 7-50 lb/ft.sup.3 with a conventional high density refractory material having a density of at least 150 lb/ft.sup.3 to form a dry component, and by mixing the dry component with aqueous colloidal silica to provide excellent flow properties for pumping and, ultimately, excellent binding properties.