CAS OpenIR  > 湿法冶金清洁生产技术国家工程实验室
Ceramic tiles derived from coal fly ash: Preparation and mechanical characterization
Luo, Yang1,2; Zheng, Shili1; Ma, Shuhua1; Liu, Chunli1,2; Wang, Xiaohui1

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.

KeywordCoal Fly Ash Alkali Activation Ceramic Tile Zeolite Hydroxysodalite
WOS HeadingsScience & Technology ; Technology
Indexed BySCI
WOS KeywordPorcelain ; Behavior ; Alumina
WOS Research AreaMaterials Science
WOS SubjectMaterials Science, Ceramics
Funding OrganizationNational Natural Science Foundation of China(51474199) ; Major State Basic Research Development Program of China(2013CB632601)
WOS IDWOS:000408287900053
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Document Type期刊论文
Affiliation1.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
Recommended Citation
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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