Porous refractory shapes

Details Porous refractory shapes Porous refractory shapes

1975-08-05

1977-06-07

Poer, J.

Compositions: coating or plastic

Coating or plastic compositions

Metal-depositing composition or substrate-sensitizing...

106 44, 106 57, 106 65, 106 66, 106 69, C04B 3552

Patent

active

040281221

ABSTRACT:
Porous refractory shapes having sufficient strength for use as thermal insulation in metal melting furnaces at insulation service temperatures of 3,400.degree. to 3,900.degree. F are formed in place by bonding refractory particles of alumina, for instance, with aluminum hydroxide generated by the reaction of aluminum with water in the presence of a corrosion accelerator, and either with or without a reaction control agent satisfactory for eliminating or significantly suppressing the evolution of hydrogen, nitrogen dioxide, hydrogen chloride, or the like from the reacting mass or for reducing the rate of reaction corrosion.

REFERENCES:
patent: 2883297 (1959-04-01), Jeitner
patent: 3082104 (1963-03-01), Belz
patent: 3086876 (1963-04-01), Griggs et al.
patent: 3151994 (1964-10-01), Adlassnig
patent: 3219466 (1965-11-01), Isherwood
patent: 3220860 (1965-11-01), Robiette et al.
patent: 3220862 (1965-11-01), Miller
patent: 3634112 (1972-01-01), Yavorsky et al.

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