Magnesia-titania refractory and method for manufacturing the sam

Compositions: ceramic – Ceramic compositions – Refractory

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Details

501112, 501113, 501114, 501117, C04B 3503, C04B 3504, C04B 35043

Patent

active

055959482

ABSTRACT:
A refractory is disclosed which contains integrally sintered magnesia particles forming the skeleton of the refractory and a mineral phase of magnesium orthotitanate (Mg.sub.2 TiO.sub.4) formed between the magnesia particles, thus giving an increased erosion resistance. Preferably, the refractory comprises coarse magnesia particles having an average particle diameter of at least 1 mm or a mixture of coarse magnesia particles having an average particle diameter of at least 1 mm and medium magnesia particles having an average particle diameter of 1 to 0.15 mm and 5 to 50 wt. % of magnesium orthotitanate intervening between the magnesia particles. The refractory not only has an excellent durability in a basic atmosphere, but also has a high strength because of combination of the coarse or medium magnesia particles so that it does not tend to deform and has a high durability against thermal shock.

REFERENCES:
patent: 2639993 (1953-05-01), Heuer
patent: 3540900 (1970-11-01), Guile
patent: 3632698 (1972-01-01), Crespi
patent: 4125407 (1978-11-01), Ueno

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