Abstract

Recycling and converting coal gangue and red mud into porous ceramics with good performance is a feasible disposal route. In this present work, porous foam ceramics was prepared using coal gangue and red mud as main raw materials at low sintering temperature, The amount of coal gangue and red mud were up to 70 wt%. To regulate the forming and sintering performance of the product, quartz sands and clay material were added to the formula. The green body was formed by a foaming technology using aluminum powders as foaming agents at room temperature. After foamed, the specimens were dried at 60-80 °C, and then calcined at 1060°C. Effects of concentration of NaOH and amount of aluminum powders on the phase, mechanical properties and microstructure were investigated here. Such study is expected to provide a new utilization route of the coal gangue and red mud, and brings both intensive environmental and economic benefits.

Details

Title
Preparation and Characteristics of Porous Ceramics by a foaming Technology at Low Temperature
Author
Zhang, H Q 1 ; Wang, S P 2 ; Wen, J 3 ; N Wu 2 ; Xu, S H 2 

 State Key Laboratory of Silicate Materials for Architectures (Wuhan University of Technology), Wuhan 430070, China; School of Materials Science and Engineering, Wuhan University of Technology, Wuhan 430070, China; Zhongshan Advanced Engineering Technology Research Institute, Wuhan University of Technology, Zhongshan 528400, China 
 School of Materials Science and Engineering, Wuhan University of Technology, Wuhan 430070, China 
 State Key Laboratory of Silicate Materials for Architectures (Wuhan University of Technology), Wuhan 430070, China; School of Materials Science and Engineering, Wuhan University of Technology, Wuhan 430070, China 
Publication year
2017
Publication date
Dec 2017
Publisher
IOP Publishing
ISSN
17578981
e-ISSN
1757899X
Source type
Scholarly Journal
Language of publication
English
ProQuest document ID
2556499849
Copyright
© 2017. This work is published under http://creativecommons.org/licenses/by/3.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.