无机盐工业
主管:中海油天津化工研究设计院有限公司
主办:中海油天津化工研究设计院有限公司
   中海油炼油化工科学研究院(北京)有限公司
   中国化工学会无机酸碱盐专业委员会
ISSN 1006-4990 CN 12-1069/TQ

无机盐工业 ›› 2011, Vol. 43 ›› Issue (9): 46-.

• 论文 • 上一篇    下一篇

木薯酒糟还原浸出低品位软锰矿工艺研究

粟海锋,蒋娜,陈超,文衍宣   

  1. 广西大学化学化工学院,广西南宁 530004
  • 出版日期:2011-09-10 发布日期:2011-09-07

Reductive leaching of manganese from low-grade pyrolusite by cassava lees

 SU  Hai-Feng, JIANG  Na, CHEN  Chao, WEN  Yan-Xuan   

  1. School of Chemistry and Chemical Engineering,Guangxi Universtry,Nanning 530004, China
  • Published:2011-09-10 Online:2011-09-07

摘要: 用木薯酒糟作还原剂,在硫酸水溶液中浸出低品位软锰矿。通过正交实验和单因素实验,考察了硫酸浓度、反应温度、反应时间和木薯酒糟用量等因素对锰浸出率的影响。结果表明,各因素影响锰浸出率大小的顺序为:硫酸浓度、反应温度、反应时间和木薯酒糟用量。木薯酒糟还原浸出低品位软锰矿适宜条件:硫酸浓度为3.13 mol/L、反应温度为90 ℃、反应时间为3 h、木薯酒糟与软锰矿质量比为0.3。在此条件下,锰的浸出率达到94.8%。

关键词: 软锰矿, 木薯酒糟, 还原浸出

Abstract: Manganese-leaching from a low-grade pyrolusite was investigated using cassava lees as reducing agent in sulfuric acid medium.Orthogonal and single-factor experiments were employed to examine the influences of concentrations of sulfuric acid,leaching temperature,reaction time,and amount of cassava lees on Mn leaching rates.Results showed that influencing order of the main factors on Mn leaching rate followed by sulfuric acid concentration,reaction temperature,leaching time,and amount of cassava lees.Suitable leaching conditions were obtained as 3.13 mol/L H2SO4 and 0.3 mass ratio of cassava lees to pyrolusite for 3 h at 90 ℃.Mn leaching rate under above conditions reached 94.8%.

Key words: pyrolusite, cassava lees, reductive leaching

中图分类号: