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硅酸盐通报 ›› 2021, Vol. 40 ›› Issue (10): 3298-3304.

• 专题研究论文 • 上一篇    下一篇

新型结合剂SioxX-Zero对喷煤管用无水泥浇注料显微结构和性能的影响

张思思1,2, 王庆虎1,2, 彭红3, 李亚伟1,2, 舒小妹1,2, 戴长浩4, 王丹滨4, ARINDAM Mukherjee5   

  1. 1.武汉科技大学,省部共建耐火材料与冶金国家重点实验室,武汉 430081;
    2.武汉科技大学,高温材料与炉衬技术国家地方联合工程研究中心,武汉 430081;
    3.Elkem Silicon Materials, Kristiansand 4623;
    4.埃肯国际贸易(上海)有限公司,上海 200120;
    5.Elkem India, Mumbai 400705
  • 收稿日期:2021-04-20 修回日期:2021-05-27 出版日期:2021-10-15 发布日期:2021-11-11
  • 通讯作者: 王庆虎,博士,副教授。E-mail:wangqinghu@wust.edu.cn
  • 作者简介:张思思(1996—),女,硕士研究生。主要从事耐火材料方面的研究。E-mail:17771837082@163.com
  • 基金资助:
    国家自然科学基金(51872211,U1904217)

Effect of Novel Binder SioxX-Zero on Microstructure and Properties of No-Cement Castables for Coal Burner Pipe

ZHANG Sisi1,2, WANG Qinghu1,2, PENG Hong3, LI Yawei1,2, SHU Xiaomei1,2, DAI Changhao4, WANG Danbin4, ARINDAM Mukherjee5   

  1. 1. The State Key Laboratory of Refractories and Metallurgy, Wuhan University of Science and Technology, Wuhan 430081, China;
    2. National-provincial Joint Engineering Research Center of High Temperature Materials and Lining Technology,Wuhan University of Science and Technology, Wuhan 430081, China;
    3. Elkem Silicon Materials, Kristiansand 4623, Norway;
    4. Elkem Shanghai, Shanghai 200120, China;
    5. Elkem India, Mumbai 400705, India
  • Received:2021-04-20 Revised:2021-05-27 Online:2021-10-15 Published:2021-11-11

摘要: 喷煤管是水泥回转窑的关键承力部位,长期承受高温熟料粉尘和气流的剧烈冲刷,需具备优异的高温力学性能。本工作分别以新型SioxX-Zero和传统铝酸钙水泥为结合剂,采用板状刚玉、α-Al2O3微粉和碳化硅等为主要原料,分别在1 100 ℃和1 400 ℃热处理3 h,制备了喷煤管用无水泥和低水泥结合Al2O3-SiC质浇注料,并研究了新型SioxX-Zero结合剂对浇注料显微结构、常规物理性能和高温力学性能的影响。结果表明:与传统铝酸钙水泥相比,SioxX-Zero能有效提高浇注料流动值和延缓流动值衰减,改善其施工性能。同时,含SioxX-Zero的Al2O3-SiC质浇注料中原位生成了数量较多、尺寸较大的针状莫来石,大幅改善了材料的常温抗折/耐压强度、高温抗折强度和高温耐磨性能。

关键词: 耐火材料, 结合剂, 无水泥浇注料, Al2O3-SiC质浇注料, SioxX-Zero, 水泥回转窑, 喷煤管

Abstract: As the key bearing component of cement kiln, the coal burner pipe is subjected to severe long-term abrasion by high temperature clinker dust and airflow, thus requires better high temperature mechanical properties. In this work, the novel SioxX-Zero and traditional calcium aluminate cement were used as binders to prepare no-cement and low-cement Al2O3-SiC castables for coal burner pipe. All castable specimens applied tabular corundum, α-Al2O3 powder and SiC as main raw materials, and should be fired at 1 100 ℃ and 1 400 ℃ for 3 h. The effect of SioxX-Zero on microstructure, physical properties and high temperature mechanical properties for castables were investigated. The results show that, compared with traditional calcium aluminate cement, the introduction of SioxX-Zero increases flowability and delays flowability decrease of castables, improving the workability. Moreover, more needle-liked mullite with larger size in-situ forms in Al2O3-SiC castables containing SioxX-Zero, which significantly enhances the cold modulus of rupture, cold crushing strength, hot modulus of rupture and high-temperature abrasion resistance.

Key words: refractory, binder, no-cement castable, Al2O3-SiC castable, SioxX-Zero, cement kiln, coal burner pipe

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