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《Chinese Journal of Applied Chemistry》 2003-04
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Extraction of Potassium from Potash Feldspar by Ion-exchange

HAN Xiao-Zhao, YAO Wei-Tang*, HU Bo, DENG Zheng-Tao (School of Chemical Engineering,Hefei University of Technology,Hefei 230009)  
The extraction of potassium from potash feldspar by NaCl, CaCl 2, SrCl 2 and BaCl 2 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, CaCl 2 co-calcinated potash feldspar were analyzed by XRD. The experiment results showed that the order of ion exchange extraction of potassium was Na +Ca 2+Sr 2+Ba 2+, and at calcination temperature over the melting points of NaCl or CaCl 2, the two salts gave potassium ion-exchange degree 90% much greater than that calcinated with other salts.
【Fund】: 安徽省自然科学基金资助项目 ( 0 30 45 10 3)
【CateGory Index】: TQ131.13
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