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High alumina refractory ceramics offer increased resistance in slagging environments. In particular, the presence of more than 5% Cr 2 O 3 in a high alumina refractory ceramic increases its slag corrosion resistance due to the formation of a dense Cr-spinel oxide layer at the refractory/slag interface. However, refractory ceramics containing more that 5% Cr 2 O 3 cost...
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