Compositions: ceramic – Ceramic compositions – Refractory
Patent
1980-01-06
1982-06-08
Poer, James
Compositions: ceramic
Ceramic compositions
Refractory
106 84, C04B 3552
Patent
active
043340296
ABSTRACT:
Disclosed is an unfired refractory composition comprising a refractory aggregate and a binder for the refractory aggregate, in which the binder comprises a water-soluble or water-dispersible siliceous binder in an amount of 1 to 20% by weight based on the refractory aggregate, a carbonizable organic binder in an amount of 2 to 15% by weight based on the refractory aggregate and a phosphate type hardening agent in an amount of 0.5 to 20% by weight based on the refractory aggregate.
This refractory composition is moldable and hardenable at normal temperatures, and has an excellent mechanical strength not only at relatively low temperatures below about 500.degree. C. and high aggregate-firing temperatures but also intermediate temperatures between these low and high temperatures. Accordingly, if this refractory composition is used as a liner for a furnace or the like, break-down of the liner in the intermediate region between the inner surface side and the outer surface side is effectively prevented, resulting in prominent elongation of the life of the liner. Furthermore, this refractory composition has a long pot life in the kneaded state and is excellent in the working property and processability.
REFERENCES:
patent: 4102694 (1978-07-01), Sasaki et al.
patent: 4171984 (1979-10-01), Hosaka et al.
Gotoh Kyugo
Maruya Takashi
Naito Hiroyuki
Ohmori Hideyo
Mitsubisha Corporation
Mizusawa Kazahu Kogyo Kabushiki Kaisha
Poer James
Yamato Refractives & Co.
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