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

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

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.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 Sisi^1,2, WANG Qinghu^1,2, PENG Hong³, LI Yawei^1,2, SHU Xiaomei^1,2, DAI Changhao⁴, WANG Danbin⁴, ARINDAM Mukherjee⁵

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/Abstract

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

中图分类号:

TQ175

张思思, 王庆虎, 彭红, 李亚伟, 舒小妹, 戴长浩, 王丹滨, ARINDAM Mukherjee. 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[J]. 硅酸盐通报, 2021, 40(10): 3298-3304.

ZHANG Sisi, WANG Qinghu, PENG Hong, LI Yawei, SHU Xiaomei, DAI Changhao, WANG Danbin, ARINDAM Mukherjee. Effect of Novel Binder SioxX-Zero on Microstructure and Properties of No-Cement Castables for Coal Burner Pipe[J]. BULLETIN OF THE CHINESE CERAMIC SOCIETY, 2021, 40(10): 3298-3304.

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