Effect of hydromagnesite on the hydration of hydratable alumina and properties of corundum-based castables

被引：5
|
作者：
Li, Ye [1 ]
Zhang, Hongrui [1 ]
Guo, Liu [1 ]
Zhang, Peixiong [1 ]
Wang, Gang [2 ]
Zhai, Pengtao [3 ]
Lei, Lei [4 ]
Chen, Liugang [1 ]
机构：
[1] Zhengzhou Univ, Sch Mat Sci & Engn, Henan Key Lab High Temp Funct Ceram, Zhengzhou 450001, Henan, Peoples R China
[2] Refractories Res Co Ltd, Sinosteel Luoyang Inst, State Key Lab Adv Refractories, Xiyuan Rd 43, Luoyang 471023, Peoples R China
[3] Henan Univ Econ & Law, Sch Engn Management & Real Estate, Jinshui East Rd 180, Zhengzhou 450046, Peoples R China
[4] Tech Univ Munich, Chair Construction Chem, Lichtenbergstr 4, D-85747 Garching, Germany
来源：
CERAMICS INTERNATIONAL | 2022年 / 48卷 / 24期
基金：
中国国家自然科学基金;
关键词：
Hydratable alumina; Hydromagnesite; Hydration; Castables; Thermo-mechanical properties; MGO; REHYDRATION; MECHANISM; EVOLUTION; ENERGY; CALCINATION; RESISTANCE; BOEHMITE; BEHAVIOR; FRACTURE;
D O I：
10.1016/j.ceramint.2022.08.198
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：
Hydratable alumina (HA) was premixed with hydromagnesite (BMC) to investigate the BMC impact on the hydration behavior of HA and the thermo-mechanical properties of HA bonded (HAB) castables. The phase composition, microstructure and mass changes of dried HA samples, were characterized by XRD, SEM, and TG, respectively. Flow ability, microstructure, and thermo-mechanical properties of HAB castables were studied. Results indicated that BMC effectively lowered HA hydration rate due to the decreased specific surface area. The hot modulus of rupture strength of castables was improved because the sintering of Al2O3 was enhanced by the MgO from BMC decomposition.
引用
收藏
页码：36383 / 36392
页数：10
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