摘要
RE sulfate solution containing fluorine is obtained from bastnasite which is roasted in air and then leached with sulfuric acid. Solvent extraction of Ce4+ with DEHPA in sulphonating kerosene from the solution is investigated. It is found that fluorine ion is extracted into organic phase with Ce4+. The extraction mechanism is proposed by slope analysis and studying the influence of aqueous acidity, fluorine concentration and DEHPA concentration on CF- /cC4+ in equilibrium organic phase.
RE sulfate solution containing fluorine is obtained from bastnasite which is roasted in air and then leached with sulfuric acid. Solvent extraction of Ce4+ with DEHPA in sulphonating kerosene from the solution is investigated. It is found that fluorine ion is extracted into organic phase with Ce4+. The extraction mechanism is proposed by slope analysis and studying the influence of aqueous acidity, fluorine concentration and DEHPA concentration on CF- /cC4+ in equilibrium organic phase.
