Compositions: ceramic – Ceramic compositions – Refractory
Patent
1995-05-19
1996-11-26
Green, Anthony
Compositions: ceramic
Ceramic compositions
Refractory
106692, 501 94, 501128, C04B 3510
Patent
active
055785387
ABSTRACT:
The castable refractory material comprising as binders, per 100 parts by weight of solid components, (a) 10-30 parts by weight of water-inactive, fine refractory powder, which is a mixture of fine refractory powder having an average diameter of 0.2-0.6 .mu.m and fine refractory powder having an average diameter of 1-10 .mu.m at a ratio of 1:2-2:1; (b) 2-7 parts by weight (as an effective amount) of alumina cement having an average diameter of 3-8 .mu.m, cement clinker minerals thereof comprising CaO.Al.sub.2 O.sub.3 and CaO.2Al.sub.2 O.sub.3, with 12CaO.7Al.sub.2 O.sub.3, if any, in such an amount that a diffraction intensity index of the 12CaO.7Al.sub.2 O.sub.3 at a lattice plane distance D of 2.68 .ANG. is 1 or less assuming that the diffraction intensity index of the CaO.Al.sub.2 O.sub.3 at a lattice plane distance D of 2.96 .ANG. is 100; and (c) 0.4-3 parts by weight of fine amorphous silica powder having an average diameter of 0.5 .mu.m or less; the balance of the solid components being substantially refractory aggregate and refractory powder.
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patent: 5420087 (1995-05-01), Wieland et al.
Nishikawa Chiharu
Ohba Jun
Green Anthony
Taiko Refractories Co., Ltd.
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