Li 2 Mg 2 Si 4 O 10 F 2 、H 2 Mn 8 O 16 •1.4H 2 O和Li 1.3 Ti 1.7 Al 0.3 (PO 4 ) 3 在高浓度LiCl水溶液中的离子交换行为

In this paper several functional materials, such as Li2Mg2Si4O10F2(LHT), H2Mn8O16 . 1. 4H(2)O (CRYMO) and Li(1.3)Mi(1.7)Al(0.3) (PO4)(3)(LTAP), were investigated in order to separate respectively iron, potassium and sodium impurities from the aqueous solution of high-concentration lithium chloride. The experimental results show that these functional materials have very high ion exchange selectivity to Fe3+, K+ and Na+, respectively. And these functional materials are effective for the separation of impurities from high-concentration lithium chloride solution. The ion exchange behavior of these functional materials with impurities in high-concentration lithium chloride solution was analyzed and discussed. It is shown that the ion exchange kinetics of the Li2Mg2Si4O10F2, H2Mn8O16 . 1. 4H(2)O and Li1.3Ti1.7Al0.3(PO4)(3) with Fe3+, K+ and Na+ respectively in high-concentration lithium chloride solution can be represented approximately by the equation of JMAK.