Effect of particle size of hydromagnesite on properties of calcium aluminate cement bonded corundum based castables |
| |
| Affiliation: | 1. Federal University of São Carlos, Materials Engineering Department, Rod. Washington Luiz, km 235, São Carlos, SP 13565-905, Brazil;2. RHI Magnesita, Research and Development Center, Praça Louis Ensch, 240, Contagem, MG 32210-902, Brazil;3. Institute of Ceramic, Glass and Construction Materials, TU Bergakademie Freiberg, Agricolastrasse 17, 09599 Freiberg, Germany |
| |
| Abstract: | Calcium aluminate cement was premixed with hydromagnesite having different particle sizes, as a calcium magnesium aluminate cement precursor, to investigate the influence of particle size of hydromagnesite on the volume stability and thermo-mechanical properties of corundum based castables after firing at 1550 °C. The impact of particle size of hydromagnesite on the phase composition and microstructure evolution of fired castables matrix were characterized by X-ray diffraction (XRD) and scanning electron microscopy (SEM), respectively. The results demonstrate that hydromagnesite with smaller particle size has a better volumetric stability and thermo-mechanical properties of castables, because of the more homogeneously distributed micro-pores, and smaller size MA and CA6 resulted from the more uniformly distributed hydromagnesite in castables. |
| |
| Keywords: | Refractory Hydromagnesite Calcium aluminate cement Castables Thermo-mechanical properties |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
