Refractory gun mix

Details Refractory gun mix Refractory gun mix

1980-03-27

1981-06-30

Hayes, Lorenzo B.

Compositions: coating or plastic

Coating or plastic compositions

Metal-depositing composition or substrate-sensitizing...

106 66, 106 67, 106284, 1062862, 1062865, 1062866, 1062867, C04B 3504

Patent

active

042760917

ABSTRACT:
A refractory gun mix contains from 1 to 5% alkali metal phosphate, for example monosodium phosphate, sodium tripolyphosphate, or a long chain glassy polyphosphate, from 0.5 to 5% hydrated aluminum sulfate (e.g., Al.sub.2 (SO.sub.4).sub.3.14H.sub.2 O), from 0.5 to 5% bentonite, and up to 10% pitch, preferably hard pitch, the balance being sized refractory grain, preferably MgO-containing and/or CaO-containing grain such as periclase, chrome ore, and/or dolomite. In a preferred embodiment, the alkali metal phosphate contributes three atoms of phosphorous for each atom of aluminum contributed by the aluminum sulfate.

REFERENCES:
patent: 2619426 (1952-11-01), Greger
patent: 3278320 (1966-10-01), Neely et al.
patent: 3357842 (1967-12-01), Bowman
patent: 3357843 (1967-12-01), Bowman
patent: 3879208 (1975-04-01), Cassens
patent: 4001029 (1977-01-01), Cassens
patent: 4030936 (1977-06-01), Willis

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