Compositions: ceramic – Ceramic compositions – Refractory
Patent
1985-04-09
1989-01-03
Derrington, James
Compositions: ceramic
Ceramic compositions
Refractory
264122, 524378, 524433, C04B 3504
Patent
active
047957255
ABSTRACT:
In the manufacture of refractory bricks containing CaO, a mixture is formed of a refractory composition of a material containing CaO and a binder composition, and bricks are moulded from the mixture. To avoid hydration of the CaO and avoid softening of the bricks on heating up, the material containing CaO is selected from burned lime, burned dolomite and mixtures and the binder composition is present in an amount in the range 1 to 10% by weight based on the weight of the mixture and consists mainly of a thermosetting novolak type phenol resin composition and an anhydrous solvent consisting of at least one organic solvent present in an amount of less than 40% by weight based on the weight of the binder. The solvent composition is chosen to be of a chemical nature such that, at least during mixing of the refractory composition and the binder composition, it substantially does not react with the CaO.
REFERENCES:
patent: 2798002 (1957-07-01), Porter
patent: 4248638 (1981-02-01), Yomota et al.
patent: 4539343 (1985-09-01), Nishimura
Addink Jaap H.
Beelen Christiaan M. J. M.
de Boer Jurrie
Steen Adam
Verhoog Hendrik M.
Derrington James
Hoogovens Groep B.V.
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