Refractory composition for flow casting
AssigneesNippon Steel Corporation, Nippon Crucible Co., Ltd.
InventorsMitsuo Nomura, Shigeru Amano, Sho Okubo, Takuo Hosaka, Kunihiko Shiraishi, Ryuzi Adachi
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Abstract
A refractory composition for flow casting consists essentially of 100 parts by weight of refractory material, 0.1 to 2 parts by weight of sparingly water-soluble aluminum tripolyphosphate, 0.2 to 3 parts by weight of alkali metal silicate, 0.5 to 5 parts by weight of clay, up to 2/5 part by weight of organic binder per amount of clay, and 0.2 to 4 parts by weight of at least one hardening promoting reagent selected from the group consisting of calcium silicate and calcium aluminate.
Claims1
A refractory composition for flow casting substantially comprising:
- 100 parts by weight of refractory material, 0.1-2 parts by weight of sparingly water-soluble aluminum tripolyphosphate, 0.2-2 parts by weight of alkali metal silicate, 0.5-5 parts by weight of clay, up to 2/5 part by weight of organic binder per amount of clay, and 0.2-4 parts of at least one hardening promoting reagent selected from the group consisting of calcium silicate and calcium aluminate.
Dependencies are inferred from the claim text.