High alumina insulating refractory product and method for making

Details High alumina insulating refractory product and method for making High alumina insulating refractory product and method for making

1991-10-29

1994-01-18

Derrington, James

Plastic and nonmetallic article shaping or treating: processes

Including step of generating heat by friction

501 80, 501127, C04B 3510

Patent

active

052797791

ABSTRACT:
The present invention provides an as-fired, high alumina, low silica, corrosion resistant, refractory product and a method for making said product where the product includes from about 50 wt. % to about 80 wt. % of a bubble alumina, from about 10 wt. % to about 30 wt. % of a fine calcined alumina and from about 5 wt. % to about 20 wt. % of a fine hydrated alumina. The product is characterized by having an alumina content of at least 98 wt. % alumina, a silica content of less than 1 wt. %, a density of from about 80 to about 95 pounds per cubic feet, a porosity of from about 55% to about 65%, a room temperature modulus of rupture of at least 200 psig and a cold crushing strength of from at least 200 psi.

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Product Announcement for Norton Company, "Insulating ALUNDUM Fused Alumina Bonded Shapes AN 599 and AN582".
Product Announcement for the Carborundum Company, "Alfrax `Bubble` B101 Mix 8435 Fused Aluminum Oxide Refractory".

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