Slaking-resistant calcia refractory

Details Slaking-resistant calcia refractory Slaking-resistant calcia refractory

1981-10-14

1983-05-10

Poer, James

Compositions: ceramic

Ceramic compositions

Refractory

501112, 501118, 501122, 501123, 501125, C04B 3504

Patent

active

043830447

ABSTRACT:
Provided by this invention is a slaking-resistant calcia refractory comprising, as a fired mixture, (a) 2% by weight or less of silicon dioxide, (b) aluminum oxide (Al.sub.2 O.sub.3) and magnesium oxide (MgO) of the amount defined in the graph of FIG. 5 as within the region enclosed by the lines connecting point A (2.5 wt % Al.sub.2 O.sub.3 and 0 wt % MgO), point B (1.5 wt % Al.sub.2 O.sub.3 and 1.5 wt % MgO), point C (1.5 wt % Al.sub.2 O.sub.3 and 8.5 wt % MgO) and point D (10 wt % Al.sub.2 O.sub.3 and 0 wt % MgO), (c) 0.9% by weight or less of iron oxide, and (d) a predominant amount of calcium oxide.

REFERENCES:
patent: 2916389 (1959-12-01), McAllister
patent: 3060042 (1962-10-01), Leatham et al.

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