Extraction equilibria and kinetics of Ti(Ⅳ)from leached chloride liquors of ilmenite

作     者：Abd ElAziz A.Nayl Hisham F.Aly 

作者机构：Chemistry DepartmentCollege of ScienceAl Jouf UniversitySkaka 2014Saudi Arabia Hot Labs CentreAtomic Energy AuthorityCairo 13759Egypt 

出 版 物：《Rare Metals》 (稀有金属（英文版）)

年 卷 期：2017年第36卷第8期

页      面：676-684页

核心收录：

学科分类：081704[工学-应用化学] 081902[工学-矿物加工工程] 0819[工学-矿业工程] 07[理学] 0806[工学-冶金工程] 08[工学] 0817[工学-化学工程与技术] 0805[工学-材料科学与工程（可授工学、理学学位）] 0703[理学-化学] 070301[理学-无机化学] 0702[理学-物理学] 

基　　金：financially supported by the Egyptian Atomic Energy Authority(No.141/2014) 

主　　题：Kinetics Equilibrium Titanium(Ⅳ) Ilmenite Hydrochloric acid Separation 

摘      要：Extraction of titanium（Ⅳ）from real chloride leach liquor of ilmenite was carried out with 0.1 mol L^（-1）di-（2-ethylhexyl）phosphoric acid（HDEHP）in *** and kinetics studies for Ti（Ⅳ）were carried out in the presence of impurities that were leached with Ti（Ⅳ）.Parameters affecting extraction rate of Ti（Ⅳ）from chloride media in the presence of Fe（Ⅲ）,Mg（Ⅱ）,and Al（Ⅲ）were studied to evaluate the stoichiometry of extracted Ti（Ⅳ）*** is found that the extraction rate of Ti（Ⅳ）is dependent on the extractant concentration and pH of *** the optimum conditions,more than 95%Ti（Ⅳ）can be *** the basis of slope analysis method,the extracted species of Ti（Ⅳ）appears to be[TiO（H_2A_2）_2]_（org）,where H_2A_2 refers to ***,the kinetic studies of the extraction process of Ti（Ⅳ）and other metal ion impurities were carried out by a Lewis cell with a constant interfacial area of 16.7 cm^*** of the experimental results suggests that TiO^（2＋）extraction rate by HDEHP is the first with respect to hydrogen ion concentration and HDEHP *** results are interpreted by a reaction mechanism where the extraction process is controlled by a diffusion process at the interface rather than in the bulk phase.