Ceramic tiles derived from coal fly ash: Preparation and mechanical characterization
Luo, Yang1,2; Zheng, Shili1; Ma, Shuhua1; Liu, Chunli1,2; Wang, Xiaohui1
2017-10-15
发表期刊CERAMICS INTERNATIONAL
ISSN0272-8842
卷号43期号:15页码:11953-11966
摘要

Coal fly ash (CFA) accounts for a large fraction of the solid waste produced in China. Hence, there is an urgent need for the effective utilization of CFA, for example, as a raw material for ceramics production. In this study, clay-and feldspar-like materials fabricated by alkali activation pre-treatment of CFA were mixed with untreated CFA (regarded as a quartz-like material) and sintered to prepare fully ash-based ceramic tiles. The obtained tiles exhibited excellent sintering properties, e.g., low firing temperature and a wide sintering range; further, they showed better green strength (due to hydrogen bonding) and post-sintering performance (due to fluxing and mullite skeleton effects) than ceramic tiles produced exclusively from untreated CFA. The fully ash-based ceramic tiles sintered at 1100 degrees C exhibited optimal post-sintering properties (bulk density, 2.5 g/cm(3); rupture modulus, 50.1 MPa; and water absorption, 0%). Thus, the proposed method is well suited for preparing a novel kind of ceramic tiles completely derived from CFA, highlighting its importance in the field of fly ash ceramics.

关键词Coal Fly Ash Alkali Activation Ceramic Tile Zeolite Hydroxysodalite
文章类型Article
WOS标题词Science & Technology ; Technology
DOI10.1016/j.ceramint.2017.06.045
收录类别SCI
语种英语
关键词[WOS]Porcelain ; Behavior ; Alumina
WOS研究方向Materials Science
WOS类目Materials Science, Ceramics
项目资助者National Natural Science Foundation of China(51474199) ; Major State Basic Research Development Program of China(2013CB632601)
WOS记录号WOS:000408287900053
引用统计
文献类型期刊论文
条目标识符http://ir.ipe.ac.cn/handle/122111/23182
专题湿法冶金清洁生产技术国家工程实验室
作者单位1.Chinese Acad Sci, Inst Proc Engn, Natl Engn Lab Hydromet Cleaner Prod Technol, Key Lab Green Proc & Engn, Beijing 100190, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
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GB/T 7714
Luo, Yang,Zheng, Shili,Ma, Shuhua,et al. Ceramic tiles derived from coal fly ash: Preparation and mechanical characterization[J]. CERAMICS INTERNATIONAL,2017,43(15):11953-11966.
APA Luo, Yang,Zheng, Shili,Ma, Shuhua,Liu, Chunli,&Wang, Xiaohui.(2017).Ceramic tiles derived from coal fly ash: Preparation and mechanical characterization.CERAMICS INTERNATIONAL,43(15),11953-11966.
MLA Luo, Yang,et al."Ceramic tiles derived from coal fly ash: Preparation and mechanical characterization".CERAMICS INTERNATIONAL 43.15(2017):11953-11966.
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