剪切强化苯胺与软锰矿浸出工艺研究  

Processing Technique for Pyrolusite Leaching with Aniline by Shear Enhancement Approach

作　　者：张先盼 唐朝波 杨建广 刘将 朱强 黄天曦 叶文龙 ZHANG Xianpan;TANG Chaobo;YANG Jianguang;LIU Jiang;ZHU Qiang;HUANG Tianxi;YE Wenlong(School of Metallurgical Science and Engineering,Central South University,Changsha 410083,Hunan,China)

机构地区：[1]中南大学冶金与环境学院,湖南长沙410083

出　　处：《矿冶工程》2024年第6期125-128,共4页Mining and Metallurgical Engineering

摘　　要：为解决苯胺法制备对苯醌转化率低和生产效率低的问题,提出采用剪切手段强化反应过程,探究软锰矿添加量、酸度、剪切速率和液固比对对苯醌转化率的影响。结果表明:高速剪切能加速软锰矿与苯胺均质,并强化氧化反应过程,实现苯胺高效转化。在酸度90 g/L、剪切速率2 500 r/min、液固比5∶1、软锰矿用量1.6倍理论值的优化工艺条件下,对苯醌转化率为91.23%;与传统机械搅拌工艺相比,剪切强化工艺的反应时间显著缩短,对苯醌转化率显著提高,具有良好的工业应用前景。In view of problems of low conversion and low productivity in preparation of benzoquinone by the oxidation of aniline,a leaching process with a shear-enhancement approach was adopted to investigate the effects of adding amount of pyrolusite,acidity,shear rate,and liquid-solid ratio on the conversion rate of p-benzoquinone.It is found that high-speed shearing can accelerate the homogenization of pyrolusite and aniline,and enhance the oxidation reaction,resulting in efficient conversion of aniline.Under optimized process conditions,including acidity of 90 g/L,shear rate of 2 500 r/min,liquid-solid ratio of 5∶ 1,pyrolusite addition at 1.6 times theoretical amount,the conversion rate of p-benzoquinone is 91.23%.Compared to traditional mechanical stirring process,the reaction time can be significantly shortened and the conversion rate of p-benzoquinone can be significantly increased.It is concluded that the leaching process with shear-enhancement approach can have a promising future in industrial application.

关 键 词：剪切强化 对苯醌 苯胺氧化法 软锰矿 均质机 

分 类 号：TF111[冶金工程—冶金物理化学]