Alumina-spinal monolithic refractories

Details Alumina-spinal monolithic refractories Alumina-spinal monolithic refractories

1990-03-16

1991-02-05

Dixon, Jr., William R.

Compositions: ceramic

Ceramic compositions

Refractory

501108, 501118, 501119, 106692, C04B 3502, C04B 3504

Patent

active

049904752

ABSTRACT:
An alumina-spinel monolithic refractory consists essentially of 50-90 percent by weight of alumina clinker, 5-40 percent by weight of MgO--Al.sub.2 O.sub.3 spinel clinker not larger than 1 mm in size and 1-25 percent by weight of alumina cement. Another alumina-spinel monolithic refractory consists essentially of 50-90 percent by weight of alumina clinker, 5-40 percent by weight of MgO--Al.sub.2 O.sub.3 spinel clinker, 1-25 percent by weight of alumina cement and not more than 5 percent by weight of magnesia clinker. The alumina-spinel monolithic refractories are used for lining the inner walls of ladles, vacuum degassing vessels, hot-metal mixers, blast-furnace troughs and their covers, not-metal mixer cars, tundishes and the like.

REFERENCES:
patent: 3577249 (1971-05-01), McKenna
patent: 3953563 (1976-04-01), Kihlstedt et al.
patent: 4331773 (1982-05-01), Hongo et al.
patent: 4400474 (1983-08-01), Copperthwaite et al.
patent: 4729974 (1988-03-01), Nazirizadeh et al.
patent: 4751204 (1988-06-01), Kyoden et al.
patent: 4780434 (1988-10-01), Watanabe et al.
patent: 4833109 (1989-05-01), Macey et al.

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