生物质焦焙烧还原低品位软锰矿及其动力学

doi:10.3969/j.issn.1005-3026.2015.10.025

东北大学学报:自然科学版 ›› 2015, Vol. 36 ›› Issue (10): 1482-1486.DOI: 10.3969/j.issn.1005-3026.2015.10.025

生物质焦焙烧还原低品位软锰矿及其动力学

冯雅丽¹，张士元^1,2，李浩然²，周宇照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:2014-04-01 修回日期:2014-04-01 出版日期:2015-10-15 发布日期:2015-09-29
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:
国家自然科学基金资助项目(21176026，21176242); 中国大洋矿产资源研究开发计划项目( DY125-15-T-08); 中央高校基本科研业务费基础研究资金资助项目( FRT-TP-09-002B).

Roasting Reduction and Its Kinetics of Low-Grade Pyrolusite by Biomass Char

FENG Ya-li¹， ZHANG Shi-yuan^1,2， LI Hao-ran²， ZHOU Yu-zhao¹

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:2014-04-01 Revised:2014-04-01 Online:2015-10-15 Published:2015-09-29
Contact: FENG Ya-li
About author:-
Supported by:
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摘要/Abstract

摘要： 采用生物质焦和活性炭粉作还原剂，在管式炉中进行了低品位软锰矿焙烧还原对比试验.分别研究了焙烧温度、焙烧时间、生物质焦用量等条件对软锰矿还原率的影响，对焙烧产物进行了X射线衍射分析.结果表明，生物质焦在焙烧时间和还原效率上优于活性炭粉；软锰矿焙烧还原依次经历MnO₂→Mn₂O₃→Mn₃O₄→MnO过程；在焙烧温度为800℃，焙烧时间为50min，生物质焦用量为10%时，软锰矿还原率可达98%以上，在此基础上导出了还原动力学方程，并证实还原过程由界面化学反应控制，表观活化能为43.896kJ·mol^-1.

关键词: 低品位软锰矿, 生物质焦, 焙烧还原, 机理研究, 反应动力学

Abstract: Roasting reduction contrast experiments of low-grade pyrolusite were performed by using biomass char and activated carbon as the reductant in a tube furnace. The effects of roasting temperature， roasting time and the dosage of biomass char on manganese reduction efficiency of pyrolusite were studied， and X-ray diffraction analysis was carried out for the roasting products. The results indicated that biomass char is obviously better than activated carbon in roasting time and manganese reduction efficiency.Roasting reduction of pyrolusite undergoes the process of MnO₂→Mn₂O₃→Mn₃O₄→MnO. Manganese reduction efficiency greater than 98% was achieved when roasting temperature is 800℃， roasting time is 50min and the dosage of biomass char is 10%. Based on the results， the reduction kinetics equation was derived， and it is confirmed that the reduction process is controlled by interface chemical reaction， and the apparent activation energy is about 43.896kJ·mol^-1.

Key words: low-grade pyrolusite, biomass char, roasting reduction, mechanism study, reaction kinetics

中图分类号:

TF792

冯雅丽，张士元，李浩然，周宇照. 生物质焦焙烧还原低品位软锰矿及其动力学[J]. 东北大学学报:自然科学版, 2015, 36(10): 1482-1486.

FENG Ya-li， ZHANG Shi-yuan， LI Hao-ran， ZHOU Yu-zhao. Roasting Reduction and Its Kinetics of Low-Grade Pyrolusite by Biomass Char[J]. Journal of Northeastern University:Natural Science, 2015, 36(10): 1482-1486.

参考文献

[1]Su H，Wen Y，Wang F，et al.Reductive leaching of manganese from low-grade manganese ore in H₂SO₄ using cane molasses as reductant［J］.Hydrometallurgy，2008，93(3/4):136-139.
[2]Sahoo R N，Nail P K，Das S C.Leaching of manganese from low-grade manganese ore using oxalic acid as reductant in sulphuric acid solution［J］.Hydrometallurgy，2001，62(3):157-163.
[3]Hariprasad D，Dash B，Ghosh M K，et al.Leaching of manganese ores using sawdust as a reductant［J］ .Minerals Engineering，2007，20(14):1293-1295.
[4]Zhang X Y，Tian X D，Zhang D F.Separation of silver from silver-manganese ore with cellulose as reductant［J］.Translations of Nonferrous Metals Society of China，2006，16(3):705-708.
[5]Grimanelis D，Neou-Syngouna P，Vazarlis H.Leaching of a rich Greek manganese ore by aqueous solutions of sulphur dioxide［J］.Hydrometallurgy，1992，31(1/2):139-146.
[6]Nayl A A，Ismail I M，Aly H F.Recovery of pure MnSO₄·H₂O by reductive leaching of manganese from pyrolusite ore by sulfuric acid and hydrogen peroxide［J］.International Journal of Mineral Processing，2011，100(3/4):116-123.
[7]Kholmogorov A G，Zhyzhaev A M，Kononov U S，et al.The production of manganese dioxide from manganese ores of some deposits of the Siberian region of Russia［J］. Hydrometallurgy，2000，56(1):1-11.
[8]Lan L Y.Laboratory study:simultaneous leaching silver-bearing low-grade manganese ore and sphalerite concentrate［J］.Minerals Engineering，2004，17(9/10):1053-1056.
[9]Long H Z，Chai L Y，Qin W Q.Galena-pyrolusite co-extraction in sodium chloride solution and its electrochemical analysis［J］.Translations of Nonferrous Metals Society of China，2010，20(5):897-902.
[10]张径生，周光华.我国锰矿资源及选矿进展评述［J］.中国锰业， 2006，24(1):1-5.(Zhang Jing-sheng，Zhou Guang-hua.A review of manganese ore resources in China and its processing technology progress［J］.China’s Manganese Industry，2006，24(1):1-5.)
[11]Abdullah H，Wu H.Biochar as a fuel:properties and grindability of biochars produced from the pyrolysis of mallee wood under slow-heating conditions［J］.Energy Fuels，2009，23(8):4174-4181.
[12]Yaman S.Pyrolysis of biomass to produce fuels and chemical feedstocks［J］.Energy Conversion and Management，2004，45(5):651-671.
[13]王纪学，冯雅丽，李浩然.低品位软锰矿流态化还原焙烧［J］.北京科技大学学报，2012，34(9):987-991.(Wang Ji-xue，Feng Ya-li，Li Hao-ran.Fluidizing reduction roasting of low grade pyrolusite［J］.Journal of University of Science and Technology Beijing， 2012，34(9):987-991.)
[14]Piotrowski K，Mondal K，Wiltowski T，et al.Topochemical approach of kinetics of the reduction of hematite to wustite［J］.Chemical Engineering Journal，2007，131(1/2/3):73-82.

生物质焦焙烧还原低品位软锰矿及其动力学

Roasting Reduction and Its Kinetics of Low-Grade Pyrolusite by Biomass Char

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