Preparation of K2SO4 using convention method and in-situ observation of its crystal growth

被引：0
|
作者：
Pei B. [1 ]
Zhan G. [1 ]
Chen P.-Z. [1 ]
Guo Z.-C. [1 ]
Gao J.-T. [1 ]
机构：
[1] State Key Laboratory of Advanced Metallurgy, University of Science and Technology Beijing, Beijing
来源：
Guo, Zhan-Cheng (zcguo@ustb.edu.cn) | 1600年 / Science Press卷 / 38期
关键词：
Crystal growth; Growth kinetics; In-situ observation; Potassium chloride; Potassium sulfate; Preparation methods;
D O I：
10.13374/j.issn2095-9389.2016.03.014
中图分类号：
学科分类号：
摘要：
The effects of the reaction molar ratio of ammonium sulfate and the content of sodium chloride on the purity and yield of potassium sulfate were investigated in this article. The growth rate of single crystal potassium sulfate was in-situ observed with a stereo microscope in a flow system to find desirable conditions for the rapid growth of potassium sulfate crystals. The results indicate that the recovery of potassium sulfate is about 80% when the molar ratio of 2KCl to (NH4)2SO4 is 1:1. NaCl has significant influence on the purity and recovery of potassium sulfate, and reduces the quality of the product. To accelerate the growth of potassium sulfate crystals, the saturation of potassium sulfate and the solution flow rate should be increased. © All right reserved.
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页码：391 / 400
页数：9
相关论文
共 24 条
  • [1] Liu J., Analysis on China's demand supply status and world potentials of potash resource, China Min Mag, 20, (2011)
  • [2] Bao R.H., China should adopt various countermeasures with the intensification of the monopoly on world-wide potash industries, Land Resour Inf, 7, (2012)
  • [3] Bao R.H., Qi S.Y., Analysis on world potash resources demand supply status, China Agric Means Prod, 8, (2010)
  • [4] Wang C.N., Yu J.Q., Chen L., Et al., A Review on the exploration of global potash resources with an emphasis on the past and present status of China with a methodological perspective, J Salt Lake Res, 15, 3, (2007)
  • [5] Liu S.Q., Study on the Solvent Progress of Preparing Potassium Sulfate by Ammonium Sulfate and Potassium Chloride and Its Phase Graph, (2003)
  • [6] Wang J.J., Review of production and potassium sulfate based on Mannheim process, Chem Eng, 96, 3, (2003)
  • [7] Dong Z.N., Deng L., Luo P., Et al., Study on the new process for producing potassium sulfate from phosphogysum by one-step technology, Sci Technol Chem Ind, 19, 3, (2011)
  • [8] Zhang Y.C., Jiao L.D., Quality analysis of salt in potassium sulfate produced by Mira bilite method, J Salt Chem Ind, 40, 6, (2011)
  • [9] Wu Z.Y., The production of potassium sulfate from ferrous sulfate and potassium chloride, Guangxi Chem Ind, 27, 1, (1998)
  • [10] Gu Z.C., Production technology of potassium sulfate by double decomposition of SOP with sodium sulfate, Phosphate Compound Fert, 20, 4, (2005)
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