2014•International Journal of Applied Ceramic TechnologyRequires access

Effect of Spinel Kinds on Properties of Alumina—Spinel Castables

Wendong Qiu, Guozhi Ruan, Ouyang Junhua, Yuxi Zhao, Guogang Xu

Abstract

Effect of spinel kinds on the properties of alumina—spinel castables was investigated. The results showed that the addition of various kinds of spinels has an effect on the physical and mechanical properties of these refractory castables. The reason is that the A l 2 O 3 ‐rich spinel precipitated A l 2 O 3 and M g O ‐rich spinel solid solution and formed secondary spinel. In addition, stable spinel in castables during heat treatment process was found to be more effective for enhancing cold and hot strength.

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Key concepts: Spinel, Materials science, Refractory (planetary science), Metallurgy, Chemical engineering, Engineering