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J4  2011, Vol. 45 Issue (5): 885-889    DOI: 10.3785/j.issn.1008-973X.2011.05.018
能源工程     
低品位铁矿石流化焙烧-磁选提质试验研究
王国军,朱燕群,王智化,杨丽,王星昊,黄镇宇,周俊虎,岑可法
浙江大学 能源清洁利用国家重点实验室,浙江 杭州 310027
Investigation on upgrading iron ore utilized by circulating
fluidized bed roasting and magnetic separation
WANG Guo-jun, ZHU Yan-qun, WANG Zhi-hua, YANG Li, WANG Xing-hao,
HUANG Zhen-yu, ZHOU Jun-hu, CEN Ke-fa
State Key Laboratory of Clean Energy Utilization, Zhejiang University, Hangzhou 310027, China
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摘要:

针对我国低品位铁矿石嵌布粒度极细,成分复杂,难提难选的现况,运用循环流化床和磁选管进行劣质铁矿石的流化焙烧磁选试验研究,试验采用CO、N2的混合气体营造还原性气氛(其中CO体积分数为10%),将粒径为1 mm以下的新疆某低品位铁矿石(原矿铁品位为9.63%)于850 ℃焙烧10 min,得到强磁性的磁铁矿,将焙烧产物破碎细磨(磨至200 目以下占75%),利用湿式磁选管在71.66 kA/m的磁场强度下进行弱磁选抛尾,可以得到铁精矿品位为46.25%,全铁回收率为25.52%的选矿指标.研究表明,运用循环流化床焙烧-弱磁选的方法提质铁矿石,可以有效地减少焙烧时间,在保证选矿达标的基础上,有效地降低生产周期.

Abstract:

The lowgrade iron ore has typically characterisic of disseminated fine granularity, complex components and difficult purification in China. Therefore, a new process of integrated circulating fluidized bed(CFB) roasting with magnetic separation was employed to upgrade the low-grade iron ore. Under the reducing atmosphere condition with 10% CO and N2 balanced, the Xinjiang's low-grade iron ore, which was below 1 mm diameter, 9.63% by grade orginally, was roasted at 850 ℃for 10 minutes, to obtain highly magnetic magnetite After grinding, 75% less than 0.074 mm in diameter, and wet type magnetic seperation at 71.66 kA/m, 46.25% iron ore grading was obtained with iron recovery around 25.52%. The results verifies that using the way of CFB roasting-magnetic separation process can improve the quality of the iron ore, reduce roasting time, improve the production cycle.

出版日期: 2011-11-24
:  TK 22  
基金资助:

博士点基金新教师基金资助项目 200803351056);高等学校学科创新引智计划资助项目(B08026).

通讯作者: 朱燕群,女,工程师.     E-mail: yqzhu@zju.edu.cn
作者简介: 王国军(1984-),男,山西运城人,硕士生,从事循环流化床高效焙烧系统研究.E-mail: wgjamb@zju.edu.cn
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引用本文:

王国军,朱燕群,王智化,杨丽,王星昊,黄镇宇,周俊虎,岑可法. 低品位铁矿石流化焙烧-磁选提质试验研究[J]. J4, 2011, 45(5): 885-889.

WANG Guo-jun,ZHU Yan-qun,WANG Zhi-hua,YANG Li,WANG Xing-hao,HUANG Zhen-yu. Investigation on upgrading iron ore utilized by circulating
fluidized bed roasting and magnetic separation. J4, 2011, 45(5): 885-889.

链接本文:

https://www.zjujournals.com/eng/CN/10.3785/j.issn.1008-973X.2011.05.018        https://www.zjujournals.com/eng/CN/Y2011/V45/I5/885

[1] 孙炳泉. 近年我国复杂难选铁矿石选矿技术进展[J]. 金属矿山, 2006(3): 11-13.
SUN Bingquan. Progress in Chinas beneficiation technology for complex refractory iron ore [J]. Metal Mine, 2006(3): 11-13.
[2] 任亚峰, 余永富. 难选红铁矿磁化焙烧技术现状及发展技术[J].金属矿山, 2005(11): 20-23.
REN Yafeng, YU Yongfu. Present status and development orientation of magnetization roasting technology for refractory red iron ores [J]. Metal Mine, 2005(11): 20-23.
[3] 李广涛, 张宗华, 张昱, 等. 四川某高磷鲕状赤褐铁矿石选矿试验研究[J]. 金属矿山, 2008(4): 43-47.
LI Guangtao, ZHANG Zonghua, ZHANG Yu, et al. Test research on beneficiation of Sichuan high phosphorus Oolitic hematite and limonite Ore [J].Metal Mine, 2008(4): 43-47.
[4] 庞永梅, 王晋权, 郭建, 等. 空气分级燃烧降低锅炉NOX排放控制技术[J]. 电力科学与工程, 2007, 23(9): 46-49.
PANG Yongmei, WANG Jinquan, GUO Jian, et al. Technology on reducing boiler NOx emission by airstaged combustion [J]. Eletric Power Science and Engineering, 2007, 23(9): 46-49.
[5] BASU P, LARGE J F. Circulating fluidized bed technology [M]. Oxford: Pergamon Press, 1988:293-301.
[6] 董若凌, 周俊虎, 杨卫娟, 等. 煤粉分级燃烧对炉内燃烧过程影响的试验研究[J]. 浙江大学学报:工学版, 2005, 39(12): 1907-1910.
DONG Ruoling, ZHOU Junhu, YANG Weijuan, et al. Experimental study on effects of pulverized coal staging on infurnace combustion process[J]. Journal of Zhejiang University: Engineering Science, 2005, 39(12): 1907-1910.
[7] ANTHONY E J. Halogen capture by limestone during fluidized bed combustion \
[C\]∥Proceedings of the International Conference on Fluidized Bed COmbustion. New York:ASME,1991:917-922.
[8] 宋海霞, 徐德龙, 酒少武, 等. 悬浮态磁化焙烧菱铁矿及冷却条件对产品的影响[J]. 金属矿山, 2007(1): 52-54.
SONG Haixia, XU Delong, JIU Xiaowu, et al. Siderite Magnetization by Suspension Roasting and Effect of Cooling Conditions on Product. \
[J\] Metal Mine, 2007(1): 52-54.
[9] 岑可法, 倪明江, 骆仲泱, 等. 循环流化床锅炉理论设计与运行[M]. 北京: 中国电力出版社, 1997: 66-68.
[10] 骆仲泱, 倪明江, 岑可法. 循环流化床流体动力特性的试验研究[J]. 浙江大学学报:工学版, 1987, 21(6): 84-92.
LUO Zhongyang, NI Mingjiang, CEN Kefa. Study on Hydrodynamics Characteristic for Recycling Fluidized Bed [J]. Journal of Zhejiang University:Engineering Science, 1987, 21(6): 84-92.

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