| PATENT CLAIMS |
Casting zirconia fused cast refractories contg > 33% ZrO2 comp. using a mold, wherein the mold is rotated on a rotation axis, so that at least a portion of a meltage of raw material poured into the mold is cooled to solidify under a centrifugal for > 1.2 G, thereby forming at least a 2.5 cm thickness of said refractory free from worm tracing, said 2.5 cm thickness of said refractory has been in contact with a sidewall of said mold, & said sidewall is remotest from said rotation axis
|