Effect of Sintering Temperature on Crystallization Properties of Glass-ceramics Prepared from Asbestos Mine Waste Rock

被引：0
|
作者：
Liu Q. [1 ,2 ]
Sun H. [1 ,2 ]
Peng T. [1 ,2 ,3 ]
Wang C. [1 ,2 ]
机构：
[1] Key Laboratory of Solid Waste Treatment and Resource Recycle, Ministry of Education, Sichuan, Mianyang
[2] Institute of Mineral Materials and Application, Southwest University of Science and Technology, Sichuan, Mianyang
[3] Analytical and Testing Center, Southwest University of Science and Technology, Sichuan, Mianyang
来源：
Cailiao Daobao/Materials Reports | 2022年 / 36卷 / 15期
关键词：
direct sintering; enstatite; forsterite; glass-ceramic; mine waste rock;
D O I：
10.11896/cldb.21040122
中图分类号：
学科分类号：
摘要：
The glass-ceramics with forsterite as the main crystalline phase and enstatite as the secondary crystalline phase were prepared by direct sintering method using waste rock from Dahonggou asbestos mine as raw material. The effects of the sintering temperature (1 150-1 325 ℃) on the crystalline phase, microstructure and properties of crystallization of glass-ceramics were investigated by using various modern analytical testing methods. The results show that with the increase of sintering temperature, the type of crystalline phase is not affected, but the content changes. The content of enstatite gradually increases, and the content of forsterite slightly decreases; the grains in glass-ceramics grow up, and the interwoven occlusal structure is formed among the grains. The glass-ceramics prepared at the sintering temperature of 1 300 ℃ show the optimal physical and chemical properties, of which the linear shrinkage rate, the volume density and the flexural strength are the largest at 11.2%, 2.78 g/cm3 and 95 MPa, respectively, and the water absorption is the smallest at 0.03%. © 2022 Cailiao Daobaoshe/ Materials Review. All rights reserved.
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