|About this Abstract
||2010 TMS Annual Meeting & Exhibition
||Processing Materials for Properties
||Research on the Performance of Environment-Friendly MgO-CaO-ZrO2 Refractories
||Caiyun Lu, Min Chen, Jingkun Yu, Zhongqiang Sun
|On-Site Speaker (Planned)
Considering MgO-Cr2O3 refractories used in the alkaline environment led environmental problems caused by hexavalent chromium pollution, MgO-CaO-ZrO2 refractories is a new type refractories for substitution of MgO-Cr2O3 refractories using in secondary refining vessels in metallurgical industries for its excellent properties as well as environment-friendly features. In the present work, Micro-ZrO2 and Nano-ZrO2 were used as additives applied in MgO-CaO refractories to respectively investigate their improvement on performance of MgO-CaO refractories. The results showed that the densification of the MgO-CaO refractories was appreciably promoted when a small amount of ZrO2 was added, the thermal shock resistance and slaking resistance of the MgO-CaO refractories could be appreciably improved with a small amount of ZrO2 addition. The effect of nano-sized ZrO2 additive on densification, thermal shock resistance and slaking resistance was more obvious than micro-sized one. The Penetration index of MgO-CaO refractories was significant reducted as the amount of nano-sized ZrO2 additive increased.
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