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  

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

作　　者：张思思[1,2] 王庆虎[1,2] 彭红 李亚伟[1,2] 舒小妹 戴长浩 王丹滨 ARINDAM Mukherjee ZHANG Sisi;WANG Qinghu;PENG Hong;LI Yawei;SHU Xiaomei;DAI Changhao;WANG Danbin;ARINDAM Mukherjee(The State Key Laboratory of Refractories and Metallurgy,Wuhan University of Science and Technology,Wuhan 430081,China;National-provincial Joint Engineering Research Center of High Temperature Materials and Lining Technology,Wuhan University of Science and Technology,Wuhan 430081,China;Elkem Silicon Materials,Kristiansand 4623,Norway;Elkem Shanghai,Shanghai 200120,China;Elkem India,Mumbai 400705,India)

机构地区：[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

出　　处：《硅酸盐通报》2021年第10期3298-3304,3344,共8页Bulletin of the Chinese Ceramic Society

基　　金：国家自然科学基金(51872211,U1904217)。

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-Al_(2)O_(3)微粉和碳化硅等为主要原料,分别在1100℃和1400℃热处理3 h,制备了喷煤管用无水泥和低水泥结合Al_(2)O_(3)-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Al_(2)O_(3)-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。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 Al_(2)O_(3)-SiC castables for coal burner pipe. All castable specimens applied tabular corundum, α-Al_(2)O_(3) 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 Al_(2)O_(3)-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.

关 键 词：耐火材料 结合剂 无水泥浇注料 Al_(2)O_(3)-SiC质浇注料 SioxX-Zero 水泥回转窑 喷煤管 

分 类 号：TQ175[化学工程—硅酸盐工业]