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U.S. Department of Energy
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Mouldable refractory composition based on partially stabilized zirconia and on an aluminous hydraulic binder, its preparation and mouldings manufactured from this composition

Patent ·
OSTI ID:5490722
A refractory composition is disclosed 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.. 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%.
Assignee:
Societe Europeenne des Produits Refractaires (France)
Patent Number(s):
US 4506023
OSTI ID:
5490722
Country of Publication:
United States
Language:
English