| 杂质对磷石膏与碳酸铵反应及产物碳酸钙结晶的影响 |
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| 引用本文： | 丁光月,李岳,樊彩梅,荆宏健,冯军强. 杂质对磷石膏与碳酸铵反应及产物碳酸钙结晶的影响[J]. 太原理工大学学报, 2011, 42(6): 593-597 |
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| 作者姓名： | 丁光月 李岳 樊彩梅 荆宏健 冯军强 |
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| 作者单位： | 1. 太原理工大学化学化工学院,太原,030024
2. 天脊煤化工股份有限公司,山西潞城,047507 |
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| 摘 要： | 用碳酸铵与磷石膏反应制取硫酸铵是磷石膏利用的有效途径之一,但磷石膏中的杂质会对石膏的转化过程及碳酸钙的结晶产生不利影响,进而影响碳酸钙的分离过程。以二水硫酸钙与碳酸铵为原料,以磷酸、硝酸镁、氟化钠及酸不溶物(AI)为杂质添加剂,研究了磷石膏复分解反应制取硫酸铵过程中杂质P2O5、Mg2+、F-及AI对硫酸钙转化率的影响,并对反应产物碳酸钙的结晶形态和晶型进行了SEM和XRD分析。结果表明,杂质的存在不仅降低了石膏中硫的转化率,而且使碳酸钙的晶型和晶体形状发生了变化,从而将影响产物的物性和过滤性能。
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| 关 键 词： | 杂质 二水硫酸钙 碳酸铵 转化率 碳酸钙结晶 |
Effect of Impurities on Conversion of Gypsum and Crystallization of Calcium Carbonate |
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| DING Guang-yue,LI Yue,FAN Cai-mei,JING Hong-jian,FENG Jun-qiang. Effect of Impurities on Conversion of Gypsum and Crystallization of Calcium Carbonate[J]. Journal of Taiyuan University of Technology, 2011, 42(6): 593-597 |
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| Authors: | DING Guang-yue LI Yue FAN Cai-mei JING Hong-jian FENG Jun-qiang |
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| Affiliation: | DING Guang-yue1,LI Yue1,FAN Cai-mei1,JING Hong-jian2,FENG Jun-qiang2(1.College of Chemistry and Chemical Engineering,Taiyuan University of Technology,Taiyuan 030024,China,2.Tianji Coal & Chemical Industry Group Co.Ltd.,Lucheng 047507,China) |
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| Abstract: | An effective approach of phosphogypsum utilization is the production of ammonium sulfate from ammonium carbonate and phosphogypsum.However,impurities in phosphogypsum have a negative impact on gypsum transformation process and the crystallization of calcium carbonate,and thus on the separation process of calcium carbonate.In this paper,calcium sulfate dihydrate and ammonium carbonate were used as raw materials,with phosphoric acid,magnesium nitrate,sodium fluoride and acid-insoluble material(AI) as impurity... |
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| Keywords: | impurity calcium sulfate dihydrate ammonium carbonate conversion calcium carbonate crystals |
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