Compositions for plugs of refractory material

Details Compositions for plugs of refractory material Compositions for plugs of refractory material

1975-11-18

1977-02-15

Douglas, Winston A.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

106 55, 106 56, 266272, 266273, C08L 9500, C04B 3566, C21B 712

Patent

active

040081940

ABSTRACT:
New compositions for refractory plugs to plug the tapholes of blast furnaces which exhibit less tendency to stiffen and to burn with the emission of heavy black smoke in use are prepared by adding 5-30 parts by weight of a petroleum pitch which has a high softening point and 10-30 parts by weight of dihydric alcohol or its polymer to 100 parts by weight of a conventional refractory aggregate composition and mixing the thus combined constituents to form a mixture.

REFERENCES:
patent: 2855318 (1958-10-01), Kerla
patent: 3291872 (1966-12-01), Brown et al.
patent: 3496256 (1970-02-01), Boquist
patent: 3607809 (1971-09-01), Elby
patent: 3702771 (1972-11-01), Brown et al.

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