Rapid thermal decomposition of manganese ore using microwave heating

被引：40
作者：
Chen, Jin [1 ,2 ]
Li, Lei [2 ,3 ]
Chen, Guo [1 ,2 ]
Peng, Jinhui [1 ,2 ]
Srinivasakannan, C. [4 ]
机构：
[1] Kunming Univ Sci & Technol, State Key Lab Complex Nonferrous Met Resources Cl, Fac Met & Energy Engn, Kunming 650093, Peoples R China
[2] Kunming Univ Sci & Technol, Minist Educ, Key Lab Unconvent Met, Kunming 650093, Peoples R China
[3] Jiangsu Prov Met Design Inst Co LTD, Shenwu Grp, Nanjing 210007, Jiangsu, Peoples R China
[4] Petr Inst, Chem Engn Program, Abu Dhabi, U Arab Emirates
来源：
JOURNAL OF ALLOYS AND COMPOUNDS | 2017年 / 699卷
基金：
中国国家自然科学基金;
关键词：
Manganese ore; Microwave calcination; Dissociation behavior; Structural characterization; SULFURIC-ACID; OXIDE ORES; EXTRACTION; PYROLUSITE; REDUCTION; BEHAVIOR;
D O I：
10.1016/j.jallcom.2016.12.379
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
The present work attempts to investigate the influence of microwave heating on thermal decomposition and dissociation behavior of manganese ore. The manganese ore could be rapidly heated volumetrically to 1000 degrees C in 17 min by microwave heating, with an increase in manganese content of the ore from 30% to 40%. XRD patterns and thermodynamic analysis shows that the process of microwave heating could be divided into three parts, namely the decomposition reaction of MnCO3, Mn2O3 and CaCO3, respectively. Mn3O4 were obtained at microwave calcination temperatures higher than 577 degrees C. Based on the results, microwave heating can be applied effectively and efficiently for pretreatment of manganese ore. (C) 2016 Elsevier B.V. All rights reserved.
引用
收藏
页码：430 / 435
页数：6
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