Sintering behavior and thermal shock resistance of MgO-Mg2SiO4 refractories by co-doped silica fume and quicklime

被引：1
作者：
Wu, Sheng [1 ]
Hou, Qingdong [1 ]
Yu, Jiayao [3 ]
Wang, Cairan [1 ]
Zhao, Jia-liang [2 ]
Wang, Shengbo [1 ]
Luo, Xudong [1 ,2 ]
Qi, Xin [2 ]
机构：
[1] Univ Sci & Technol Liaoning, Sch Mat & Met, Anshan 114051, Liaoning, Peoples R China
[2] Liaoning Inst Sci & Technol, Benxi 117000, Liaoning, Peoples R China
[3] Iron & Steel Res Inst Ansteel Grp, Anshan 114003, Peoples R China
来源：
CERAMICS INTERNATIONAL | 2024年 / 50卷 / 24期
关键词：
Low-grade magnesite tailings; MgO-Mg; 2; SiO; 4; refractories; Sintering behavior; Thermal shock resistance; Microstructure; MAGNESITE TAILINGS; FACILE SYNTHESIS; SPINEL; NANOCOMPOSITE; CERAMICS; STRENGTH;
D O I：
10.1016/j.ceramint.2024.11.047
中图分类号：
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
To solve the serious environmental pollution of low-grade magnesite tailings, MgO-Mg2SiO4 refractories were prepared by low-grade magnesite tailings, materials and silica fume and quicklime as raw materials. The effects of calcium-silicate ratio (mol ratio) on the phase composition, microstructure, sintering behavior and thermal shock resistance of MgO-Mg2SiO4 refractories were investigated. When calcium-silicate ratio was 5/5, the samples showed the optimum bulk density and apparent porosity of 2.81 g/cm3 and 16.37 %, respectively. Controlled the calcium-silicate ratio of samples to 5/5 significantly improved the thermal shock resistance of samples, the residual compressive strength rate of 69.78 % and the residual flexural strength rate of 19.86 %, while the thermal parameter R was 34.45. The improvement in the thermal shock resistance can be attributed to the bonding phase transformation from monticellite phase to forsterite phase, thereby enhancing the bond strength between aggregate and matrix.
引用
收藏
页码：56060 / 56069
页数：10
相关论文
共 32 条
  • [1] Effect of magnesite dust pollution on biodiversity and species composition of oak-hornbeam woodlands in the Western Carpathians
    Blanar, Drahos
    Guttova, Anna
    Mihal, Ivan
    Plasek, Vitezslav
    Hauer, Tomas
    Palice, Zdenek
    Ujhazy, Karol
    [J]. BIOLOGIA, 2019, 74 (12) : 1591 - 1611
  • [2] One-step synthesis of t-ZrO2 from Zircon using magnesium-calcium minerals as stabilizers
    Chen, Boil
    Wu, Meihua
    Liu, Qiyun
    He, Can
    Yang, Yifan
    Ye, Xinjian
    Gao, Chaochao
    Huang, Zhaohui
    Min, Xin
    Zheng, Xiaohong
    Tao, Tianyi
    [J]. CERAMICS INTERNATIONAL, 2022, 48 (20) : 29997 - 30004
  • [3] Response of soil environment factors and microbial communities to phytoremediation with Robinia pseudoacacia in an open-cut magnesite mine
    Deng, Jiaojiao
    Yin, You
    Zhu, Wenxu
    Zhou, Yongbin
    [J]. LAND DEGRADATION & DEVELOPMENT, 2020, 31 (16) : 2340 - 2355
  • [4] Effect of hercynite content on the properties of magnesia-spinel composite refractories sintered in different atmospheres
    Ding, Xiongfeng
    Zhao, Huizhong
    Xiang, Zhidong
    Zhang, Han
    He, Qing
    Li, Jingjie
    [J]. CERAMICS INTERNATIONAL, 2016, 42 (16) : 19058 - 19062
  • [5] Synthesis of forsterite with high strength and low acid solubility using magnesite tailings
    Dong, Haoran
    Liang, Yonghe
    Nie, Jianhua
    Cai, Manfei
    Ju, Maoqi
    Li, Zhou
    Wen, Lidong
    Zhou, Yaofei
    [J]. CERAMICS INTERNATIONAL, 2023, 49 (08) : 13258 - 13264
  • [6] [杜高翔 Du Gaoxiang], 2008, [地学前缘, Earth Science Frontiers], V15, P142, DOI 10.1016/S1872-5791(08)60047-0
  • [7] Analysis and experiment of sintering and densification of magnesia particles
    Fu, Liangliang
    Yue, Junrong
    Liu, Wenjin
    Han, Zhennan
    Bai, Dingrong
    Xu, Guangwen
    [J]. CHEMICAL ENGINEERING SCIENCE, 2023, 268
  • [8] In situ formation of transparent spinel with the spark plasma sintering of magnesia-alumina nanocomposite granules without the help of sintering aid
    Heidari, Nasrin
    Davar, Fatemeh
    Alhaji, Amir
    [J]. CERAMICS INTERNATIONAL, 2022, 48 (02) : 1633 - 1641
  • [9] Role of ZrO2 in sintering and mechanical properties of CaO containing magnesia from cryptocrystalline magnesite
    Hu, Zhao
    Xu, Yibiao
    Li, Yawei
    Li, Zhenzhen
    Nath, Mithun
    Sang, Shaobai
    Wang, Qinghu
    Zhu, Tianbin
    Liao, Ning
    Liang, Xiong
    Andreev, Kirill
    [J]. CERAMICS INTERNATIONAL, 2022, 48 (05) : 6236 - 6244
  • [10] Effects of calcite and magnesite application to a declining Masson pine forest on strongly acidified soil in Southwestern China
    Huang, Yongmei
    Kang, Ronghua
    Ma, Xiaoxiao
    Qi, Yu
    Mulder, Jan
    Duan, Lei
    [J]. SCIENCE OF THE TOTAL ENVIRONMENT, 2014, 481 : 469 - 478
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