锰锌铁氧体废料浸出液定比例还原  

Proportion reduction in leaching solution of Mn-Zn ferrite wastes

作　　者：彭长宏[1] 李景芬[1] 陈带军[1] 

机构地区：[1]中南大学冶金科学与工程学院,湖南长沙410083

出　　处：《中南大学学报（自然科学版）》2008年第5期887-890,共4页Journal of Central South University:Science and Technology

基　　金：国家高技术发展研究计划(863)资助项目(2006AA06Z373);广东省-教育部产学研专项基金资助项目(2006D904032);中国博士后科学基金资助项目(20060400884).

摘　　要：在热力学理论分析的基础上,依据锰锌铁氧体废料硫酸浸液中Fe3+的量及铁氧体理论配方,研究利用金属铁粉、锰粉和锌粉对此浸出液的定比例还原过程。研究结果表明:定比例金属粉末还原技术能有效控制还原液中Fe,Mn和Zn 3种主成分的实际比例符合或接近其理论配方,其质量分数平均相对误差分别为:Fe2O3,0.153%;Mn3O4,-0.415%;ZnO,-0.137%,均控制在锰锌铁氧体制备要求的-2%～2%误差范围之内。定比例还原技术还能实现Fe3+的完全还原,还原液中Fe3+的质量浓度小于0.1 g/L,还原率大于99.8%。On the basis of thermodynamics theory, and according to the content of Fe^3＋ in sulfuric acid leached liquor from waste Mn-Zn ferrite powders and the theoretical prescription of Mn-Zn ferrite, the sulfuric leached liquors＇ proportion reduction processes, in which special proportion reducing agents of Fe, Mn and Zn powders were used, were studied. The results show that the proportion reduction technology can effectively control the actual proportion of Fe, Mn and Zn in reduction solution, approaching to the theoretical prescription of Mn-Zn ferrite. The average relative errors of mass fraction are as follows： Fe203, 0.153%; Mn3O4, -0.415% and ZnO, -0.137%, respectively. And all of them are controlled under -2%--2% compared with the theoretical prescription of Mn-Zn ferrites. The Fe^3＋ also can be reduced completely by the special proportion reducing agents of Fe, Mn and Zn. The mass concentration of Fe^3＋ is below 0.1 g/L and its reduction rate is above 99.8%.

关 键 词：锰锌铁氧体废料 硫酸浸液 还原 

分 类 号：X758[环境科学与工程—环境工程]