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Function mechanism of CO-CO2 atmosphere on the formation of Na2SnO3 from SnO2 and Na2CO3 during the roasting process

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Release time:2016-07-05
Affiliation of Author(s):School of Minerals Processing & Bioengineering, Central South University
Journal:Powder Technology
Key Words:SnO2; Na2SnO3; Roasting; CO-CO2 atmosphere; Function mechanism
Abstract:High-purity Na2SnO3 product has been successfully prepared from SnO2 and Na2CO3 via a novel process developed by the authors' group. This study proposed a function mechanism of CO-CO2 atmosphere on the formation of Na2SnO3 in the roasting process using SEM-EDS, micro-region XRD and FTIR analyses. The results showed that under 5 vol%–20 vol% CO/(CO + CO2) atmosphere, the main reactions in the SnO2-Na2CO3 system included Na2CO3 = Na2O + CO2 and Na2O + SnO2 = Na2SnO3. The reactions were affected by the CO2 partial pressure as well as by the CO content in the CO-CO2 atmosphere.
Indexed by:Unit Twenty Basic Research
Discipline:冶金工程学
Document Type:J
Volume:301
Issue:2016
Page Number:102-109
Translation or Not:no
Date of Publication:2016-05-25
Links to published journals:http://www.sciencedirect.com/science/article/pii/S0032591016302893

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Function mechanism of CO-CO2 atmosphere on the formation of Na2SnO3.pdf

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