Mouldable refractory composition based on partially stabilized z

Details Mouldable refractory composition based on partially stabilized z Mouldable refractory composition based on partially stabilized z

1983-09-21

1985-03-19

Poer, James

Compositions: ceramic

Ceramic compositions

Refractory

501105, 501124, 106104, C04B 3548

Patent

active

045060231

ABSTRACT:
A refractory composition for use in the manufacture of pipes for casting steel, the composition consisting essentially of: (a) from 96 to 98% by weight of zirconia which is partially stabilized by CaO, MgO or Y.sub.2 O.sub.3, at least 90% of which has a particle size of between 0.1 and 10 .mu.m, and (b) from 2 to 4% by weight of an aluminous hydraulic binder, this composition having the following overall chemical analysis: 1.4 to 3.2% by weight of Al.sub.2 O.sub.3, 3.7 to 4.6% by weight of CaO, or 0.36 to 1.15% by weight of CaO plus 2.7 to 3.5% by weight of MgO, or 0.36 to 1.15% by weight of CaO plus 5.36 to 8.80% of Y.sub.2 O.sub.3, less than 1% by weight of SiO.sub.2 +Na.sub.2 O+Fe.sub.2 O.sub.3 +TiO.sub.2 taken together, and ZrO.sub.2 to make up to 100%.

REFERENCES:
patent: 3533815 (1970-10-01), Baldwin

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