High durability refractory composition

Details High durability refractory composition High durability refractory composition

2006-07-18

2006-07-18

Sample, David (Department: 1755)

Compositions: ceramic

Ceramic compositions

Refractory

C501S123000

Reexamination Certificate

active

07078360

ABSTRACT:
A high temperature hot strength magnesia-based refractory composition having high durability at elevated temperatures wherein a sulfamic acid in combination with an independent calcia source is added to a magnesia-based refractory material. The invention also provides for a refractory gunning composition for use in the production or repair of metallurgical furnace linings.

REFERENCES:
patent: 3971665 (1976-07-01), Suzuki et al.
patent: 4383045 (1983-05-01), Nagle et al.
patent: 4923831 (1990-05-01), Uzaki et al.
patent: 0 119 812 (1992-05-01), None
patent: 62148377 (1987-07-01), None
patent: HEI 1-278469 (1989-11-01), None
patent: HEI 3-170363 (1991-07-01), None
patent: HEI 4-21573 (1992-01-01), None
patent: 05-286771 (1993-11-01), None
O'Bannon, Dictionaryof Ceramic Science and Engineering, p. 45, 1984.
Yorita et al, “Quick Hardening Gunning Refractory Composition,” translation of JP 62-148377, Jul. 2, 1987.

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