| 阻垢分散剂对氟硅酸钾(钠)结晶过程的影响 |
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| 引用本文： | 杨林军,张允湘,黄隐华. 阻垢分散剂对氟硅酸钾(钠)结晶过程的影响[J]. 化学工业与工程, 2002, 19(1): 1-5,11 |
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| 作者姓名： | 杨林军 张允湘 黄隐华 |
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| 作者单位： | 1. 南京大学化工学院,江苏,南京,210093
2. 成都师范高等专科学校,四川,成都,611930 |
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| 基金项目： | 国家‘九五’重点科技攻关资助项目 ( 95- 52 9- 0 1- 0 4 ) |
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| 摘 要： | 在试验分析十余种阻垢分散剂及将有机膦酸和聚羧酸（盐）复配使用的防垢效果的基础上，选取效果较佳的3种在MSMRP结晶器中研究了对Na2SiF6,K2SiF6从湿法磷酸溶液中结晶的影响。结果表明，所选用的阻垢分散剂均可减小晶体生长速率及平均粒径，但可增大晶核数密度及成核速率，并使晶体形态发生严重畸变，NaSiF6由八面体变为粒状及其他不规则小晶体，K2SiF6则由立方体晶体聚在一起的取晶转为小的粒状，立方体及小聚晶等。
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| 关 键 词： | 结晶 阻垢分散剂 氟硅酸钾 氟硅酸钠 湿法磷酸 |
| 文章编号： | 1004-9533(2002)01-0001-05 |
Effect of Scale Inhibitor-Dispersant on the Crystallizationof Potassium(Sodium)Fluosilicate |
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| YANG Lin-jun ,ZHANG Yun-xiang ,HUANG Yin-hua. Effect of Scale Inhibitor-Dispersant on the Crystallizationof Potassium(Sodium)Fluosilicate[J]. Chemical Industry and Engineering, 2002, 19(1): 1-5,11 |
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| Authors: | YANG Lin-jun ZHANG Yun-xiang HUANG Yin-hua |
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| Affiliation: | YANG Lin-jun 1,ZHANG Yun-xiang 1,HUANG Yin-hua 2 |
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| Abstract: | The effects of 3 types of effective scale inhibitor-dispersant on the crystallization of Na 2SiF 6 and K 2SiF 6 from phosphoric acid solution are studied in a continuous MSMPR crystallizer. The results indicate that the selected scale inhibitor-dispersant can reduce the crystal growth rate and average size. At the same time can increase the population density of nuclei and nucleation rate of potassium(sodium)fluosilicate. Moreover, the crystal habit are highly modified:Na 2SiF 6 forms grain-shaped and other irregular crystals instead of hexagonal crystals, and K 2SiF 6 forms grain-shaped and small cubic crystals instead of cluster aggregated by cubic crystals. |
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| Keywords: | crystallization scale inhibitor-dispersant potassium fluosilicate sodium fluosilicate wet-process phosphoric acid |
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