P204萃取硫酸体系中V(Ⅳ)、Fe(Ⅲ)的分离性能研究  

Study on Separation Performance of V (Ⅳ) and Fe (Ⅲ) by P204 in Sulfuric Acid Extraction System

作　　者：冯雪茹[1] 吕国志[2] 张延安[2] 张莹[2] 赵秋月[2] 刘述平[1] Feng Xueru Lu Guozhi Zhang Ting＇ an Zhang Ying Zhao Qiuyue Liu Shuping(Institute of Multipurpose Utilization of Mineral Resources, CAGS, Chengdu 610041, Sichuan, China Ministry of Edu- cation Key Laboratory of Ecological Metallurgy of Multi-metal Intergrown Ores, Special Metallurgy and Process Engineering Institute, Northeastern University, Shenyang 110819, Liaoning, China)

机构地区：[1]中国地质科学院矿产综合利用研究所,四川成都610041 [2]东北大学多金属共生矿生态化冶金教育部重点实验室,特殊冶金与过程工程研究所,辽宁沈阳110819

出　　处：《钢铁钒钛》2017年第2期23-29,36,共8页Iron Steel Vanadium Titanium

基　　金：国家863计划资助项目(2012AA062303)

摘　　要：针对传统提钒技术存在的能耗高、污染重、钒回收率低等缺点,提出钛白废酸无焙烧加压酸浸提钒新技术,以该工艺浸出液为研究对象,通过组分优势区域图、正交试验以及单因素试验,探究P204萃取硫酸体系中V(Ⅳ)、Fe(Ⅲ)的分离性能。试验结果表明:当pH小于2时,V(Ⅳ)在水溶液中主要以VO^(2+)形式存在,Fe(Ⅲ)在水溶液中主要以Fe^(3+)形式存在;相比(O/A)是影响V(Ⅳ)、Fe(Ⅲ)萃取率的重要因素;在较优萃取条件下:有机相组成30%P204+10%TBP+60%磺化煤油,温度T=30℃,震荡时间8 min,水相初始pH值为1.6,相比(O/A)为3,V(Ⅳ)的萃取率为61.16%,Fe(Ⅲ)的萃取率为18.87%,钒铁分离系数为6.67。Aiming at the shortcomings of high energy consumption ,heavy pollution and low recovery rate for the traditional vanadium production technologies, a new process for vanadium extraction by acid leac- hing using the waste acid in titanium white production under the pressure without roasting was proposed. In this paper,the leaching solution was taken as the research object. Component area map ,orthogonal tests and single factor tests had been used to research the separation performance of V （Ⅳ） and ire （ Ⅲ ） inP204 sulfuric acid extraction system. The experimental results show that V（ Ⅳ ） and Fe（ Ⅲ ） respectively exist in the main form of VO2＋ and Fe3＋ in aqueous solution when the pH is less than 2, and the phase ra- tio （O/A） is an important factor affecting the extraction rates of V（Ⅳ） and Fe（ Ⅲ ）. At the optimum ex- traction conditions of 30% P204＋10% TBP＋60% sulfonated kerosene for organic phase composition,ex- traction temperature T= 30 ℃, shaking for 8 min, 1.6 for the initial aqueous phase pH and phase ratio （O/A） = 3 ,the extraction rates of V（Ⅳ） and Fe（ Ⅲ ） are respectively 61.16% and 18.87% ,with theseparation factor of V（Ⅳ） and Fe（ Ⅲ ） at 6.67.

关 键 词：P204 钒渣 加压酸浸 萃取 分离性能 

分 类 号：TF841.3[冶金工程—有色金属冶金]