High-zirconia fused refractories

Details High-zirconia fused refractories High-zirconia fused refractories

1995-07-31

1997-10-21

Group, Karl

Compositions: ceramic

Ceramic compositions

Refractory

501105, C04B 35484

Patent

active

056796129

ABSTRACT:
High-zirconia fused refractories consist essentially of 85-96 wt % of ZrO.sub.2, 3-8 wt % of SiO.sub.2, 0.1-2 wt % of Al.sub.2 O.sub.3, 0.05-3 wt % of B.sub.2 O.sub.3, 0.05-3 wt % of BaO, SrO and MgO in total, 0.05 wt % or more of Na.sub.2 O, 0.05-0.6 wt % of Na.sub.2 O and K.sub.2 O in total, and 0.3 wt % or less of Fe.sub.2 O.sub.3 and TiO.sub.2 in total, and does not substantially contain P.sub.2 O.sub.5 and/or CuO.

REFERENCES:
patent: 3519448 (1970-07-01), Alper et al.
patent: 3632359 (1972-01-01), Alper et al.
patent: 4336339 (1982-06-01), Okumiya et al.
patent: 4705763 (1987-11-01), Hayashi et al.
patent: 5023218 (1991-06-01), Zanoli et al.
patent: 5086020 (1992-02-01), Isino et al.
patent: 5344801 (1994-09-01), Kida et al.
patent: 5466643 (1995-11-01), Ishino et al.

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