A comparative study on lightweight and dense periclase-magnesium aluminate spinel refractories from industrial preparation

被引:21
作者
Liu, Xiuyi [1 ]
Chen, Zhe [1 ]
Yan, Wen [1 ]
Wang, Jingran [1 ]
Ma, Sanbao [2 ]
Li, Guangqiang [1 ]
机构
[1] Wuhan Univ Sci & Technol, State Key Lab Refractories & Met, Wuhan 430081, Peoples R China
[2] MCL Elect Mat Co Ltd, Luoyang 471000, Peoples R China
基金
中国国家自然科学基金;
关键词
Lightweight periclase-magnesium aluminate spinel refractories; Compaction pressure; Microstructure; Strength; Thermal conductivity; ADHERENCE PROPERTIES; CEMENT CLINKER; POWDER CONTENT; CORROSION; BRICK;
D O I
10.1016/j.jallcom.2023.170611
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
Lightweight design and preparation of refractories can promote the energy saving and emissions reduction for the working linings of high temperature furnaces. In this work, two lightweight periclase-magnesium aluminate spinel refractories were prepared by using microporous aggregates under the industrial production condition and compared with commercial dense refractories. The effects of the microporous aggregates and compaction pressure on their microstructures and properties were studied. A comparison of the results indicates that the flexural strengths of the lightweight specimens were enhanced from 3.7 MPa to 6.8 MPa, and the thermal conductivities were reduced significantly, better microporous aggregate/matrix interface structures were formed in the lightweight specimens due to the pore structures in microporous aggregates. Meanwhile, increasing compaction pressure from 120 MPa to 160 MPa negatively affected the thermal shock resistance and refractoriness under load of the lightweight specimens. In summary, the lightweight specimen made using a compaction pressure of 120 MPa exhibited higher strength, excellent thermal shock resistance, lower thermal conductivity(3.47 W/m center dot K at 1200 degrees C) and high refractoriness under load (1661 degrees C), which can meet the requirements for the upper transition zone and burning zone of cement rotary kilns. (c) 2023 Elsevier B.V. All rights reserved.
引用
收藏
页数:7
相关论文
共 35 条
[1]   Development of New Refractory Materials for Cement Industry Rotary Kilns [J].
Aksel'rod, L. M. ;
Pitsik, O. N. ;
Maryasev, I. G. ;
Maryaseva, O. A. ;
Ustinov, V. A. .
REFRACTORIES AND INDUSTRIAL CERAMICS, 2017, 58 (01) :5-9
[2]   Oxidation resistance of Al2O3-SiC-C castables with different grades of andalusite [J].
Chen, Anbang ;
Wang, Xiaoyu ;
Zhou, Wenying ;
Mu, Yuandong ;
Parr, Chris ;
Ye, Guotian .
JOURNAL OF ALLOYS AND COMPOUNDS, 2021, 851
[3]   Microstructure and mechanical properties of lightweight Al2O3-C refractories using different carbon sources [J].
Chen, Zhe ;
Yan, Wen ;
Schaffoner, Stefan ;
Li, Yawei ;
Li, Nan .
JOURNAL OF ALLOYS AND COMPOUNDS, 2021, 862
[4]   Effect of SiC powder content on lightweight corundum-magnesium aluminate spinel castables [J].
Chen, Zhe ;
Yan, Wen ;
Schaffoner, Stefan ;
Ma, Sanbao ;
Dai, Yajie ;
Li, Nan .
JOURNAL OF ALLOYS AND COMPOUNDS, 2018, 764 :210-215
[5]   Fabrication of MgO-CaZrO3 refractory composites from Egyptian dolomite as a clinker to rotary cement kiln lining [J].
Ewais, Emad M. M. ;
Bayoumi, Ibrahim M. I. .
CERAMICS INTERNATIONAL, 2018, 44 (08) :9236-9246
[6]  
Ghanbarnezhad S., 2013, J CHEM ENG MAT SCI, V4, P7
[7]   Removal of chromium from Cr(VI) polluted wastewaters by reduction with scrap iron and subsequent precipitation of resulted cations [J].
Gheju, M. ;
Balcu, I. .
JOURNAL OF HAZARDOUS MATERIALS, 2011, 196 :131-138
[8]  
Gu H.Z., 2014, Interceram: Int. J. Bricks, Struct. Clay Prod. Refractories Pottery Fine Ceram. Abrasives and Spec. Ceram., V63, P121
[9]  
Harmuth H., 2010, KERAM Z, V62, P264
[10]   Preparation and characterization of microporous magnesia-based refractory [J].
Hou, Qingdong ;
Luo, Xudong ;
Xie, Zhipeng ;
Li, Yongzhi ;
An, Di ;
Li, Jijia .
INTERNATIONAL JOURNAL OF APPLIED CERAMIC TECHNOLOGY, 2020, 17 (06) :2629-2637