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Author(s): |
Yingmei Xu, Key Laboratory of Biotechnology and Bioresources Utilization , The State Ethnic Aff airs Commission-Ministry of Education,School of Biological Science of Dalian Nationalities University, Dalian 116600, China
Demin He, School of Chemical Engineering of Dalian University of Technology, Dalian 116012, China
Dongmei Wang, School of Chemical Engineering of Dalian University of Technology, Dalian 116013, China
Jiawei Shi, School of Chemical Engineering of Dalian University of Technology, Dalian 116014, China
Jun Guan, School of Chemical Engineering of Dalian University of Technology, Dalian 116015, China
Qiumin Zhang, School of Chemical Engineering of Dalian University of Technology, Dalian 116016, China |
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Abstract: |
The aim of the present study was to experimentally investigate the influence of calcination on SiO2 utilization ratios of oil shale residues. Three kinds of residues were selected from different processing methods including retorting carbocoal by solid heat carrier method, retorting carbocoal of Fushun-type and fine residues from a circulating fluidized-bed of a power station. Effects of calcination temperature, calcination time and particle size were analyzed with XRD patterns. Results show that a maximum SiO2 leaching rate of 80% can be received from the carbocoal by solid heat carrier method after calcination activation at 850 oC for 0.5 h, while those for the carbocoal of Fushun-type and residues from a power station are 75% and 60%, respectively, without the need of calcinations.
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