东北大学学报（自然科学版）

东北大学学报:自然科学版 ›› 2015, Vol. 36 ›› Issue (8): 1184-1188.DOI: 10.12068/j.issn.1005-3026.2015.08.026

• 资源与土木工程 • 上一篇    下一篇

玉米秸秆还原浸出高铁低品位锰矿研究

冯雅丽1， 易爱飞1， 李浩然2， 王维大1   

  1. (1. 北京科技大学 土木与环境工程学院， 北京100083； 2. 中国科学院 过程工程研究所 生化工程国家重点实验室， 北京100190)
  • 收稿日期:2014-03-28 修回日期:2014-03-28 出版日期:2015-08-15 发布日期:2015-08-28
  • 通讯作者: 冯雅丽
  • 作者简介:冯雅丽(1967-)， 女，北京人，北京科技大学教授，博士生导师.
  • 基金资助:
    中国大洋矿产资源研究计划项目(DY125-15-T-08)； 国家自然科学基金资助项目(21176026， 21176242)； 中央高校基本科研业务费专项资金资助项目(FRT-TP-09-002B).

Reductive Leaching of High Iron Low-Grade Manganese Ore with Pre-processed Cornstalk

FENG Ya-li1， YI Ai-fei1， LI Hao-ran2， WANG Wei-da1   

  1. 1.School of Civil and Environmental Engineering， University of Science and Technology Beijing， Beijing 100083， China; 2.National Key Laboratory of Biochemical Engineering， Institute of Process Engineering， Chinese Academy of Sciences， Beijing 100190， China.
  • Received:2014-03-28 Revised:2014-03-28 Online:2015-08-15 Published:2015-08-28
  • Contact: FENG Ya-li
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摘要： 采用“玉米秸秆硫酸预处理—浸出”工艺处理含Mn 9.63%(质量分数)的朝阳锰矿.通过试验考察用硫酸对玉米秸秆进行预处理的时间、秸秆用量、温度、硫酸浓度和浸出温度对锰浸出率的影响.试验表明，在秸秆用量2.5g、时间10min、硫酸浓度1.2mol/L、温度80℃时预处理秸秆，浸出温度为90℃的条件下，锰的浸出率达92%，杂质铁溶出率仅为20%.玉米秸秆处理前后FTIR分析结果表明，对秸秆进行硫酸预处理能够破坏难降解的木质素结构，有利于提高锰的浸出效果.

关键词: 玉米秸秆, 高铁低品位锰矿, 硫酸预处理, 还原性有机物, 黄钾铁钒

Abstract: Utilizing cornstalk pre-processing with sulfuric acid， leaching experiments were carried out to dispose of manganese ore containing Mn of 9.63%. The effects of pre-process time， cornstalk dosage， pre-process temperature， concentration of sulfuric acid and leaching temperature on manganese dissolution were investigated. The results showed that in the condition of pre-process cornstalk with dilute acid at 80oC， 2.5g of cornstalk and concentration of H2SO4 1.2mol/L for 10minutes， leaching manganese using pre-processed cornstalk as a reductant for 90 minutes at 90℃ could dissolve 92% of the manganese， and less than 20% Fe was dissolved. The FTIR analysis results indicated that cornstalk pre-processed with acid could destroy the structure of lignin， which is beneficial to leaching.

Key words: cornstalk, low-grade manganese ore with high-content iron, pre-processing with sulfuric acid, reductive organics, jarosite

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