铁屑还原浸出低品位软锰矿工艺研究  

Technical Study on Leaching Low-grade Pyrolusite Using Scrap Iron as Reductant

作　　者：施雯[1] 颜文斌[1] 熊邵锋[1] 

机构地区：[1]吉首大学化学化工学院,湖南吉首416000

出　　处：《矿冶工程》2012年第1期84-86,共3页Mining and Metallurgical Engineering

基　　金：湖南省科技计划项目(2010FJ1011-3)

摘　　要：对低品位软锰矿还原浸出工艺进行了研究,以铁屑作为还原剂,在硫酸存在的条件下还原浸出软锰矿。通过单因素实验确定软锰矿铁屑还原浸出的最佳工艺条件为:铁屑与软锰矿质量比(简称铁矿比)为0.25∶1,酸矿质量比为1∶1,液固比为5∶1,反应时间为1 h,初始反应温度为10℃。在最佳浸出工艺条件下,软锰矿中锰的浸出率达到98%以上。Studies on reduction leaching technology of low-grade pyrolusite were carried out. Scrap iron was used as reductant to leach low-grade pyrolusite in sulphuric acid. The optimum technical conditions of leaching pyrolusite by single-factor test were confirmed as follows ： the mass ratio of scrap iron to pyrolusite was 0.25： 1, the mass ratio of sul- phuric acid to pyrolusite was 1： 1, the liquid-solid ratio was 5： 1, reaction time was 1 h and initial reaction temperature was 10 ℃. The leaching rate of manganese in pyrolusite reached above 98% under the optimum leaching conditions.

关 键 词：浸出 锰矿 软锰矿 还原 铁屑 

分 类 号：TF111[冶金工程—冶金物理化学]