| 软钾镁矾溶解动力学Ⅱ：MgCl2对其溶解转化影响的研究 |
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| 引用本文： | 宋粤华,夏树屏.软钾镁矾溶解动力学Ⅱ：MgCl2对其溶解转化影响的研究[J].盐湖研究,1995,3(2):45-50. |
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| 作者姓名： | 宋粤华 夏树屏 |
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| 作者单位： | 中国科学院青海盐湖研究所 |
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| 摘 要： | 研究了不同浓度ＭｇＣｌ２（１．９９８、３．８６７、５．７３５％）溶液，在不同温度（２５、５５℃）下，对软钾镁矾在Ｋ＋，Ｍｇ２＋／ＳＯ_４￣２－，Ｃｌ－Ｈ２Ｏ四元体系中溶解转化过程的影响，采用龙格－库塔微分数值法拟合其溶解过程和结晶过程动力学方程。结果表明在一定浓度ＭｇＣｌ２溶液中软钾镁矾是不相称溶解，Ｋ２ＳＯ４先于ＭｇＳＯ４溶解进入溶液中，ＭｇＣｌ２溶液浓度越大，温度越高，溶解速度越快，Ｋ２ＳＯ４结晶速度也越快．溶解受扩散和表面反应控制，Ｋ２ＳＯ４结晶受扩散控制．
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| 关 键 词： | 软钾镁矾，硫酸钾，氯化镁，转化，动力学 |
Study on the Dissolution Kinetics of Schoenite. Part Ⅱ the effects of MgCl_2 on the dissolution-transformation of schoenite |
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| Song Yuehu,Xia Shuping.Study on the Dissolution Kinetics of Schoenite. Part Ⅱ the effects of MgCl_2 on the dissolution-transformation of schoenite[J].Journal of Salt Lake Research,1995,3(2):45-50. |
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| Authors: | Song Yuehu Xia Shuping |
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| Abstract: | In this paper. the effects of the concentrations of MgCl2 (1.998, 3.876. 5.735%)solutions and temperature (25. 55℃) on the dissolution-transformation processes ofschoenite in K+, Mg2+/SO_4￣2, Cl--H2O quadro-components system have been studie. Theparameters of kinetic equations of the dissolution processes of K2SO4·MgSO4. 6H2O andthe crystallization processes parameters of K2SO4 have been calculated. The dissolutiontransformation mechanism of picromerite has also been suggested. |
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| Keywords: | Picromerite Potassium sulfate Magnesium chloride Transformationkinetic |
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