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Citation: HAN Xiao-Zhao, YAO Wei-Tang, HU Bo, DENG Zheng-Tao. Extraction of Potassium from Potash Feldspar by Ion-exchange[J]. Chinese Journal of Applied Chemistry, ;2003, 20(4): 373-375. shu

Extraction of Potassium from Potash Feldspar by Ion-exchange

1.
School of Chemical Engineering, Hefei University of Technology, Hefei 230009

Corresponding author: YAO Wei-Tang,
Received Date: 25 July 2002
Available Online: 31 December 2002
Fund Project: 安徽省自然科学基金资助项目(03045103) (03045103)

The extraction of potassium from potash feldspar by NaCl,CaCl₂,SrCl₂ and BaCl₂ has been investigated as function of salt kind and calcination temperature.The phase compositions of potash feldspar and its calcinated,and water insoluble substances of NaCl,CaCl₂ co-calcinated potash feldspar were analyzed by XRD.The experiment results showed that the order of ion exchange extraction of potassium was Na⁺ >Ca²⁺ >Sr²⁺ >Ba²⁺,and at calcination temperature over the melting points of NaCl or CaCl₂,the two salts gave potassium ion-exchange degree>90% much greater than that calcinated with other salts.
- potash feldspar,
- potassium extraction,
- ion exchange
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