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| Comparison of Barium Aluminate and Barium Hydroxide Desulfurization Process |
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Received:March 19, 2012
Revised:March 19, 2012
Accepted:March 20, 2012
Published Online:October 23, 2012
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| DOI：10.3969/j.issn.1007-7545.2012.11.007 |
| KeyWord:barium aluminate; barium hydroxide; desulfurization; seed precipitation liquor; shrinking core model |
| Author | Institution |
| ZHANG Nian-bing |
贵州师范大学 材料与建筑工程学院 |
| LI Zhi-ying |
贵州大学 材料与冶金学院 |
| DING Tong |
贵州师范大学 材料与建筑工程学院 |
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| Abstract: |
| The seed precipitation liquor was desulfurized with barium aluminate and barium hydroxide respectively. The desulfurization slag was characterized by XRD analysis, and the desulfurization process was compared. The results show that barium hydroxide exceeds barium aluminate with better desulfurization in terms of effect, speed and duration. In the desulfurization process with barium aluminate, 2BaO?Al2O3?5H2O is firstly produced in the reaction of barium aluminate with alkali, and then it reacts with sodium sulfate and sodium carbonate. To compare, Ba(OH)2?8H2O directly reacts with sodium sulfate and sodium carbonate in the desulfurization process with barium hydroxide. Both of desulfurization reaction processes can be described with “shrinking core model”. |
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