Burned high purity refractories with low soluble chromium

Details Burned high purity refractories with low soluble chromium Burned high purity refractories with low soluble chromium

1991-06-27

1993-06-15

Group, Karl

Compositions: ceramic

Ceramic compositions

Refractory

501 99, 501100, 501117, C04B 3542

Patent

active

052198073

ABSTRACT:
A burned, high-purity refractory, specifically a chrome-alumina, alumina-chrome and picrochromite composition, which contains less than 5 ppm total soluble chromium. Such products are obtained by adding to the starting mix less than 5 wt. % (often less than 3 wt. %) zircon, titania, molybdic oxide, boric acid, carbon black, or silica.

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