| 摘要 |
This invention is provided to make the mud material having exellent anti-wearness and antiwearing by adding magnecia in main material of alumina so as to have high melting point and bond force. The mud material composition comprises alumina(more than 60 wt%), silicone carbide(5-30 wt%), clay(5-20 wt%), coke(5-30 wt%), silicone iron nitride(2-15 wt%) and magnesia powder(3-10 wt%).
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