PURPOSE: To obtain a refractory material hardly containing molten Al by kneading fused alumina having a specified particle size distribution with fine alumina particles obtd. by firing Al(OH)3, a shape retaining material and water, molding and firing the kneaded material.
CONSTITUTION: Fused alumina having a particle size distribution along a straight or curved line connecting a point on a straight line AB and a point on a straight line DE within region defined by points A-E in the diagram with the particle size (mm) of fused alumina as the x-axis having the scale in logarithms and plus mesh (%) as the y-axis having the scale of regular intervals is used by 100 pts.wt. and kneaded with 10-75 pts.wt. fine alumina particles of 0.1-10μm average particle size obtd. by firing Al(OH)3, 0.1-5 pts.wt. shape retaining material such as starch and water. The kneaded material is press-molded under 100-1,000kg/cm2 pressure and fired at ≥1,300°C to obtain a refractory material having ≥3.0 bulk specific gravity.
| JPH10324559 | REFRACTORY FOR ASH MELTING FURNACE |
| JP2008081341 | ALUMINA/MULLITE-BASED FIRING TOOL |
SUZUKI YASUTAKA
HAYASHI TATSUO
NIKKEI TECHNO RES CO LTD
| JPS5116442A | 1976-02-09 | |||
| JPS5978926A | 1984-05-08 | |||
| JPS61132513A | 1986-06-20 | |||
| JPS5037806A | 1975-04-08 |
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