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 calcina...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.展开更多
文摘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.
