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SRU WHB failure mechanisms

SRU WHB failure mechanisms

(OP)
Regarding SRU WHB failure mechanisms, some of them can occur around ferrule deformed due low content of Al2O3. I've heard that ferrule with 94%+ of Al2O3 for SRU WHB it's ok. Is it correct for a chamber that works at 1800-2400°F? Or the ferrule must contain 98%+ of Al2O3? What's the minimum content of Al2O3 recommended for the SRU's ferrule?

RE: SRU WHB failure mechanisms

what is a ferrule?

RE: SRU WHB failure mechanisms

It is many years since I worked on units like these. I seem to remember that we specified very high silica refractory (98%+) rather than alumina. Cant be sure. Maybe one of the other guys with recent experience can help.

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