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铬盐清洁工艺亚熔盐介质脱除铝酸钾、碳酸钾研究 Ⅱ.结晶工艺
Authors
杜春华
Publication date
1 January 2008
Publisher
Abstract
针对铬盐清洁工艺亚熔盐介质净化过程,研究了KOH-K_2CO_3-Al_2O_3-SiO_2-H_2O体系铝酸钾、碳酸钾混合盐的结晶行为。发现冷却时间、搅拌速率、冷却方式对结晶平均粒径具有重要影响,对晶种浓度也有一定影响。与控制冷却相比,线性冷却方式产生的结晶粒径稍小,除杂效果较好。在最佳工艺条件下亚熔盐介质中碳酸钾、铝酸钾的质量分数可分别降至4.67%、0.98%(以Al计),实现了亚熔盐介质的有效净化
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Last time updated on 09/11/2016