Effect of rice husk powder as a binder on mechanical and thermal properties of ZrO2 hollow-fiber refractory bricks. Issue 6 (15th March 2021)

• Record Type: Journal Article
• Authors: Liu, Xinyu; Wang, Tianchi; Kong, Jian; Wong, Chingping
• Is Part Of: Ceramics international. Volume 47:Issue 6(2021)
• Page Start: 8685
• Page End: 8691
• Publication Date: 2021-03-15
• Subjects: ZrO2 hollow-fiber brick -- Rice husk -- Compressive strength -- Thermal conductivity; Ceramics -- Periodicals; Céramique industrielle -- Périodiques; Ceramics; Periodicals; Electronic journals; 666
• DOI: 10.1016/j.ceramint.2020.11.241
• Languages: English
• ISSNs: 0272-8842

Abstract

Abstract: ZrO2 hollow-fiber bricks are a type of thermal-insulation product with low density and thermal conductivity. ZrO2 hollow-fiber bricks made with Zr-sol as the high-temperature binder have poor strength; therefore, it is necessary to find a binder that can overcome these challenges. Rice husk contains a large concentration of amorphous SiO2, because of which it can be used as a binder for ZrO2 hollow-fiber bricks. After treatment, rice husk powder was added to the ZrO2 hollow fibers as a high-temperature binder, which formed ZrO2 hollow-fiber bricks after sintering. The densities and thermal conductivities of these ZrO2 bricks prepared at 1300 °C were unaffected by the rice husk-derived binder, while the compressive strengths increased by 285% compared with that of the Zr-sol binder.