Effects of calcination temperature and curing time on bending strength and microstructure of hydrothermally treated mordenite products

Effects of calcination temperature and curing time on bending strength and microstructure of hydrothermally treated mordenite products

Lei Zheng Xia Zhou Xinyi Zhang 

School of Energy and Environmental Engineering, University of Science and Technology Beijing, Beijing 100083, China

Beijing Key Laboratory of Resource-oriented Treatment of Industrial Pollutants, Beijing 100083, China

Corresponding Author Email: 
zhengl@ustb.edu.cn
Page: 
419-427
|
DOI: 
https://doi.org/10.3166/ACSM.42.419-427
Received: 
|
Accepted: 
|
Published: 
30 September 2018
| Citation

OPEN ACCESS

Abstract: 

 This paper probes deep into the hydrothermal solidification of mordenite in an attempt to disclose the effects of the treatment and hydrothermal parameters on the strength and microstructure of products. Through the investigation, it is concluded that the calcination temperature promotes the evaporation of absorbed moisture, the loss of crystallization water, elimination of impurities and the collapse of the crystalline structure. The bending strength of mordenite firstly increased and then declined with the elapse of the curing time. As the calcination temperature grew, the bending strength exhibited a decline. Since the peak bending strength was observed at 12h and under 300℃, the 300℃ and 12h were determined as the optimal conditions to eliminate the impurities and ensure the good bending strength (11.5MPa) of the solidified products. The research findings provide new insights into the hydrothermal technology for mordenite solidification

Keywords: 

mordenite, hydrothermal treatment, bending strength, microstructure, self-humidity control

1. Introduction
2. Methodology
3. Results and discussion
4. Conclusions
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