作者：YIN Hongfeng,XIN Yalou,TANG Yun,YUAN Hudie

作者单位：College of Materials & Mineral Resources, Xi’an University of Architecture & Technology

会议录名称：Conference on Refractories International 2018

出版年：2018-10-17

起页：1

止页：1

总页数：1

馆藏号：

分类号：TQ175

语种：英文

会议名称：Conference on Refractories International 2018

会议地点：中国浙江杭州

会议时间：2018-10-17

会议主办者：中钢集团洛阳耐火材料研究院,中国金属学会耐火材料分会,耐火材料杂志社,先进耐火材料国家重点实验室

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内容简介

Lightweight refractories are expected to achieve excellent thermal insulation property and high-temperature performance while reducing energy consumption. In this study, a new method to prepare lightweight corundum-spinel refractory was proposed. Through the carbothermal reduction of MgO, the transfer and oxidation of Mg vapor and subsequent reaction between MgO and Al2O3, lightweight corundum-spinel refractory was obtained with a density gradient. The reaction mechanism was elucidated. The effects of preparation parameters on the phase composition, microstructure and properties of the resulting lightweight refractory were also investigated by means of X-ray diffraction, scanning electron microscopy and X-ray computed tomography.The results indicated that the Al2O3-MgAl2O4 refractory with density gradient was produced. Meanwhile, the composition of matrix and the firing temperature profoundly affected the microstructure and properties of the refractory.