Refractory materials

Details Refractory materials Refractory materials

1978-03-06

1981-03-24

Pavelko, Thomas P.

Plastic and nonmetallic article shaping or treating: processes

Repairing or restoring consumer used articles for reuse

75 27, 264 30, F27D 116

Patent

active

042579902

ABSTRACT:
A cavity in a heat-resistant structure, eg. of ferrous metal, is filled by fitting it with refractory brickwork. Instead of securing the brickwork with conventional cement, a flowable aluminous slag is produced in contact with the brickwork by exothermic reaction of a composition containing metallic aluminium and an oxidizing agent, preferably ferric oxide. The reaction, which may take place wholly or partially within the jointing space or spaces, is at such a temperature that the slag in said spaces is at least at a bond-forming temperature. Additives, eg. refractory particles, a flux, potassium nitrate or ferrous metal may be incorporated in the reaction mixture for control purposes subject to considerations described.

REFERENCES:
patent: 2424825 (1947-07-01), Hogan
patent: 2713787 (1955-07-01), Rose
patent: 3086876 (1963-04-01), Griggs
patent: 3192080 (1965-06-01), Cooper

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