氯化钾溶解过程中产生凝胶现象探讨
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摘要
氯化钾溶解过程中产生凝胶现象的主要原因有:一是氯化钾原料中夹带的浮选剂十八胺溶解于溶液中,当其浓度达到或超过临界胶束浓度时,形成十八胺胶团,胶团吸附于氯化钾表面象搭桥一样联接起来形成氯化钾溶液凝胶;二是胶团表面的疏水部分相互聚结,甚至一胶团表面的自由基链有可能"渗透"到另一胶团内核,从而使胶团之间通过疏水自由基链联接起来。试验结果表明,温度升高,离子浓度增加,氯化钾胶凝作用增强。
There are two main reasons for the gelation during the process of dissolution of potassium chloride:firstly,the flotation reagent octadecylamine contained in the raw material potassium chloride is dissolved in the solution.When the concentration of octadecylamine in the solution reaches or exceeds the critical micelle concentration,the octadecylamine is formed in the solution.The micelles can be adsorbed on the surface of potassium chloride,so that each micelles can be connected like a bridge to form potassium chloride solution gel.Secondly,hydrophobic parts on the surface of micelles coalesce with each other,and even free radical chains on the surface of one micelle may permeate into the core of another micelle,so that the two micelles are connected by hydrophobic free radical chains.The results show that the gelation of potassium chloride increases with the increase of temperature and ion concentration.
There are two main reasons for the gelation during the process of dissolution of potassium chloride:firstly,the flotation reagent octadecylamine contained in the raw material potassium chloride is dissolved in the solution.When the concentration of octadecylamine in the solution reaches or exceeds the critical micelle concentration,the octadecylamine is formed in the solution.The micelles can be adsorbed on the surface of potassium chloride,so that each micelles can be connected like a bridge to form potassium chloride solution gel.Secondly,hydrophobic parts on the surface of micelles coalesce with each other,and even free radical chains on the surface of one micelle may permeate into the core of another micelle,so that the two micelles are connected by hydrophobic free radical chains.The results show that the gelation of potassium chloride increases with the increase of temperature and ion concentration.
引文
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[3]张建民.氯化钾生产工艺研究进展[J].广州化工,2010,38(10):55-56.
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