石棉尾矿制备原顽火辉石基微晶陶瓷的物相组成演变及性能研究

硅酸盐通报 ›› 2023, Vol. 42 ›› Issue (6): 2172-2181.

所属专题：陶瓷

石棉尾矿制备原顽火辉石基微晶陶瓷的物相组成演变及性能研究

李湘^1,2, 孙红娟^1,2, 彭同江^1,2,3, 陈涛^1,2, 王璨^1,2

1.西南科技大学固体废物处理与资源化教育部重点实验室,绵阳 621010;
2.西南科技大学矿物材料及应用研究所,绵阳 621010;
3.西南科技大学分析测试中心,绵阳 621010

收稿日期:2023-03-15 修订日期:2023-03-15 出版日期:2023-06-15 发布日期:2023-06-25
通信作者: 孙红娟,博士,教授。E-mail:sunhongjuan@swust.edu.cn
作者简介:李湘(1997—),女,硕士研究生。主要从事尾矿固体废弃物资源化利用的研究。E-mail:lx17861511331@163.com
基金资助:
四川省级知识产权专项资金(2022-ZS-00031)

Phase Composition Evolution and Properties of Proto-Enstatite-Base Microcrystalline Ceramics Prepared by Asbestos Tailings

LI Xiang^1,2, SUN Hongjuan^1,2, PENG Tongjiang^1,2,3, CHEN Tao^1,2, WANG Can^1,2

1. Key Laboratory of Solid Waste Treatment and Resource Recycle, Ministry of Education, Southwest University of Science and Technology, Mianyang 621010, China;
2. Institute of Mineral Materials and Applications, Southwest University of Science and Technology, Mianyang 621010, China;
3. Analysis and Testing Center, Southwest University of Science and Technology, Mianyang 621010, China

Received:2023-03-15 Revised:2023-03-15 Online:2023-06-15 Published:2023-06-25

摘要/Abstract

摘要： 以石棉尾矿、石英砂尾矿为主要原料,采用一次烧结法制备原顽火辉石基微晶陶瓷。采用X射线衍射、场发射扫描电子显微镜等测试手段,探究不同m(SiO₂)/m(MgO)质量比、烧结温度对微晶陶瓷晶相组成、微观结构及理化性能的影响。结果表明:随着m(SiO₂)/m(MgO)质量比、烧结温度的增加,微晶陶瓷中SiO₂与镁橄榄石反应生成的顽火辉石含量增加;经1 240~1 280 ℃烧结后,顽火辉石转变为其高温稳定形态的原顽火辉石,未参与反应的石英相会逐渐转变为方石英相;在m(SiO₂)/m(MgO)质量比为1.43~3.56、烧结温度为1 280 ℃时,吸水率、体积密度、线收缩率和抗折强度分别为0.67%~0.15%、2.74~2.16 g·cm^-3、10.29%~1.37%、107.51~40.35 MPa,酸碱失量分别小于1.36%和0.13%,各性能指标优于《陶瓷砖》(GB/T 4100—2015)中Ib类低吸水率炻质砖的标准。

关键词: 石棉尾矿, 微晶陶瓷, m(SiO₂)/m(MgO)质量比, 原顽火辉石, 镁橄榄石, 石英砂尾矿

Abstract: The proto-enstatite-base microcrystalline ceramics were prepared by one-time method, taking asbestos tailings and quartz sand tailings as main raw materials. The effects of different m(SiO₂)/m(MgO)mass ratios and sintering temperatures on the crystal phase composition, microstructure and physical-chemical properties of microcrystalline ceramic materials were investigated by X-ray diffraction, field emission scanning electron microscopy and other testing methods. The results show that with the increase of m(SiO₂)/m(MgO) mass ratio and sintering temperature, the content of enstatite formed by the reaction of SiO₂ and forsterite in microcrystalline ceramics increases.After sintering at 1 240~1 280 ℃, enstatite is transformed into its high-temperature stable form, proto-enstatite, and the quartz phase that does not participate in the reaction gradually transforms into cristobalite phase. When the m(SiO₂)/m(MgO) mass ratio is 1.43~3.56 and the sintering temperature is 1 280 ℃, the water absorption, bulk density, linear shrinkage and flexural strength are 0.67%~0.15%, 2.74~2.16 g·cm^-3, 10.29%~1.37%, 107.51~40.35 MPa respectively, and the acid and alkali corrosion amount is less than 1.36% and 0.13%, respectively. Each performance index is superior to the standard of Class Ib low water absorption stoneware brick in Ceramic tiles (GB/T 4100—2015).

Key words: asbestos tailing, microcrystalline ceramics, m(SiO₂)/m(MgO) mass ratio, proto-enstatite, forsterite, quartz sand tailing

中图分类号:

X754

李湘, 孙红娟, 彭同江, 陈涛, 王璨. 石棉尾矿制备原顽火辉石基微晶陶瓷的物相组成演变及性能研究[J]. 硅酸盐通报, 2023, 42(6): 2172-2181.

LI Xiang, SUN Hongjuan, PENG Tongjiang, CHEN Tao, WANG Can. Phase Composition Evolution and Properties of Proto-Enstatite-Base Microcrystalline Ceramics Prepared by Asbestos Tailings[J]. BULLETIN OF THE CHINESE CERAMIC SOCIETY, 2023, 42(6): 2172-2181.

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石棉尾矿制备原顽火辉石基微晶陶瓷的物相组成演变及性能研究

Phase Composition Evolution and Properties of Proto-Enstatite-Base Microcrystalline Ceramics Prepared by Asbestos Tailings

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