某高镁低品位软锰矿锰镁分离试验

金属矿山 ›› 2014, Vol. 43 ›› Issue (11): 88-91.

某高镁低品位软锰矿锰镁分离试验

周宇照¹，冯雅丽²，朱宝华¹，国亚宁¹，蔡震雷²

1.中材建设有限公司，北京 100176；2.北京科技大学土木与环境工程学院，北京 100083

出版日期:2014-11-15 发布日期:2015-05-21
基金资助:
* 国家自然科学基金项目(编号：21176026，21176242)，中国大洋矿产资源研究开发计划项目（编号：DY125-15-T-08），中央高校基础研究基金项目（编号：FRT-TP-09-002B）。

High Efficient Separation and Recycling of Mg and Mn for a Rich Magnesia Low-grade Pyrolusite

Zhou Yuzhao¹，Feng Yali²，Zhu Baohua¹，Guo Yaning¹，Cai Zhenlei²

1.CBMI Construction Co.,Ltd，Beijing 100176,China；2.School of Civil and Environmental Engineering,University of Science and Technology Beijing，Beijing 100083,China

Online:2014-11-15 Published:2015-05-21

摘要/Abstract

摘要： 高镁低品位软锰矿石传统的锰镁分离工艺均存在污染严重、锰镁离子分离效率低等问题。为了实现高镁低品位软锰矿的高效、低污染开发利用，以广西某高镁低品位软锰矿为原料，对采用酸化还原焙烧+尾气（SO₂）还原软锰矿矿浆—还原产物合并浸出—浸出液除杂工艺制得的高纯MnSO₄与MgSO₄混合溶液，进行了NH₄HCO₃沉Mn2+（锰镁高效分离）工艺条件研究。结果表明，在NH₄HCO₃与MnSO₄物质的量之比为2.25，反应时间为60 min，反应温度为30 ℃，搅拌速度为120 r/min情况下，锰镁分离率可达96.96%。该锰镁分离工艺既解决了酸化还原焙烧尾气（SO₂）的高效回收利用问题，又高效地实现了浸出液中锰镁离子的分离。

关键词: 高镁低品位软锰矿, 酸化还原焙烧, 高纯硫酸锰镁溶液, 锰镁分离率

Abstract: The traditional separation process to treat the rich magnesia low-grade pyrolusite usually results in such problems as worse pollution and lower efficiency in separation of manganese and magnesia.In order to solve these problems and achieve development and utilization of high magnesium low-grade pyrolusite,and taking a rich magnesium low grade pyrolusite in Guangxi as raw material,mix solution of high pure MnSO₄ and MgSO₄ prepared by the process of acidizing reduction roasting +reduction of pyrolusite pulp by tail gas (SO₂)-combined leaching of reduction products-impurity removal from leaching solution was adopted to make conditioning tests for Mn2+ concentration by NH₄HCO₃.The results showed that with mole ratio of NH₄HCO₃ and MnSO₄ as 2.25,the reaction time for 60 min,the reaction temperature at 30 ℃,and stirring speed of 120 r/min,separation rate of magnesium and manganese reached 96.96%.The Mn-Mg separation process not only achieve comprehensive utilization of tail gas (SO₂) from acidizing reduction roasting,but also effectively separates from manganese and magnesia in leaching solution.

Key words: Rich magnesia low-grade pyrolusite, Acidizing reduction roasting, High pure magnesium manganese sulfate solution, Separation rate of manganese and magnesia

周宇照, 冯雅丽, 朱宝华, 国亚宁, 蔡震雷. 某高镁低品位软锰矿锰镁分离试验[J]. 金属矿山, 2014, 43(11): 88-91.

ZHOU Yu-Zhao, FENG Ya-Li, ZHU Bao-Hua, GUO Ya-Ning, CAI Zhen-Lei. High Efficient Separation and Recycling of Mg and Mn for a Rich Magnesia Low-grade Pyrolusite[J]. Metal Mine, 2014, 43(11): 88-91.

扫码分享