流态化低温还原氧化锰矿工艺的特点
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摘要
对中国科学院过程工程研究所设计开发的流态化低温还原氧化锰矿的工艺进行介绍,并与传统高温还原工艺进行对比,分析其优势。结果表明:流态化低温还原氧化锰矿工艺中单位煤耗仅约为传统高温工艺的60%;单台设备的处理能力可达600t/d;适用于总铁质量分数T_(Fe)≤15%、结晶水质量分数低于18%的氧化锰矿;还原过程温度低,副反应少,杂质浸出率低;尾气通过工艺过程的自身反应,无须脱硫、脱硝,可达到国家排放标准。
The process of fluidized low-temperature reduction manganese oxide ore developed by the Institute of Process Engineering,Chinese Academy of Sciences was introduced. The results show that compared with the traditional high-temperature reduction process,only 60% unit coal is consumed. The output of unit production line can reach 600 t/d. Manganese oxide ore containing total Fe less than 15% and crystal water less than 18% can be used in this process. The reduction reaction is improved by lower temperature and less side reaction. The leaching reaction is improved by lower impurity leaching rate. The tail gas meets national standards without desulfurization and denitration process.
The process of fluidized low-temperature reduction manganese oxide ore developed by the Institute of Process Engineering,Chinese Academy of Sciences was introduced. The results show that compared with the traditional high-temperature reduction process,only 60% unit coal is consumed. The output of unit production line can reach 600 t/d. Manganese oxide ore containing total Fe less than 15% and crystal water less than 18% can be used in this process. The reduction reaction is improved by lower temperature and less side reaction. The leaching reaction is improved by lower impurity leaching rate. The tail gas meets national standards without desulfurization and denitration process.
引文
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[24]李晓伟,赵惠忠,汪厚植,等.Mn Ox/Zr O2纳米催化剂的制备及CO-SCR-NO性能研究[J].材料科学与工程学报,2005,23(6):883-886.
[25]谢银银.锰系脱硝催化剂的制备及表征[D].重庆:重庆大学,2012.
[26]谭中坚,黄亚君,肖旭东.用Mn O2脱除电厂烟气中SO2制取工业硫酸锰的研究[J].中国锰业,2015,33(2):20-21.
[2]严旺生,高海量.世界锰矿资源及锰矿业发展[J].中国锰业,2009,27(3):6-11.
[3]梅光桂,张文山,曾湘波,等.中国锰业技术[M].长沙:中南大学出版社,2011:253-376.
[4]李同庆.低品位软锰矿还原工艺技术与研究进展[J].中国锰业,2008,26(2):4-13.
[5]张殿维,郭培民,赵沛.低温下碳气化反应动力学研究[J].钢铁,2007,42(6):13-16.
[6]邵国强,朱庆山,谢朝晖.软锰矿流态化低温还原实验研究[J].中国锰业,2016,34(2):29-33.
[7]朱庆山,李洪钟,谢朝晖.一种低品位二氧化锰矿流态化还原的系统及方法:中国104894366A[P].2015-09-09.
[8]谢朝晖,朱庆山,邵国强,等.氧化锰矿流态化还原技术的工业应用实践[J].中国锰业,2017,35(4):85-88.
[9]李洪钟,郭慕孙.回眸与展望流态化科学与技术[J].化工学报业,2013,64(1):52-59.
[10]郭慕孙,李洪钟.流态化手册[M].北京:化学工业出版社,2007:150-154.
[11]WELHAMNJ.Activation of the carbothermic reduction of manganeseore[J].International Journal of Mineral Processing,2002,67(1):187-198.
[12]柳桥哲夫,浅田一雄,新谷光二,等.COガスおよびCO-CO2混合ガスによゐマソガソ矿石の还原[J].铁と钢,1963,49(3):1059-1065.
[13]叶匡吾.回转窑节圈的防止和消除[J].烧结球团,1998,23(6):32-34.
[14]余植春.软锰矿回转窑还原新工艺[J].有色金属:冶炼部分,1990(2):8-10.
[15]卢国贤,袁爱群,周泽广,等.2种回转窑工艺还原低品位软锰矿的效果评价[J].中国锰业,2014,32(3):25-29.
[16]郭永楠,薛生晖,黎红兵,等.回转窑处理中低品位锰矿实验研究[J].矿冶工程,2013,33(2):97-104.
[17]田宗平,游先军,彭连顺,等.二氧化锰还原焙烧炉的研究与运用[J].中国锰业,2009,27(2):24-26.
[18]田宗平,李建文,曹建.新型二氧化锰还原炉的设计与应用[J].无机盐工业,2012,44(3):47-49.
[19]田宗平.硫酸锰生产新工艺研究[J].中国锰业,2010,28(2):26-29.
[20]秦毅,田宗平,方俊杰,等.氧化锰矿石还原焙烧过程中铁还原率评价方法研究[J].湿法冶金,2017,36(5):427-429.
[21]张建良,刘征建,杨天钧.非高炉炼铁[M].北京:冶金工业出版社,2015:35-46.
[22]ZHANG Y B,ZHAO Y,YOU Z X,et al.Manganese extraction from high-iron-content manganese oxide ores by selective reduction roasting-acid leaching process using black charcoal as reductant[J].Cent South Univ,2015,22(7):2515-2520.
[23]邵国强,朱庆山,谢朝晖,等.含锰磁铁相还原氧化锰矿的浸出工艺研究[J].中国粉体技术,2018,24(1):36-40.
[24]李晓伟,赵惠忠,汪厚植,等.Mn Ox/Zr O2纳米催化剂的制备及CO-SCR-NO性能研究[J].材料科学与工程学报,2005,23(6):883-886.
[25]谢银银.锰系脱硝催化剂的制备及表征[D].重庆:重庆大学,2012.
[26]谭中坚,黄亚君,肖旭东.用Mn O2脱除电厂烟气中SO2制取工业硫酸锰的研究[J].中国锰业,2015,33(2):20-21.