全部 标题 作者
关键词 摘要

OALib Journal期刊
ISSN: 2333-9721
费用:99美元

查看量下载量

相关文章

更多...

熔分过程中铌、磷在渣铁两相间的分配比

DOI: 10.3969/j.issn.1005-3026.2014.07.016, PP. 983-986

Keywords: 熔分,,,,,分配比

Full-Text   Cite this paper   Add to My Lib

Abstract:

以白云鄂博铌精矿经预还原后在电炉内熔分所形成的渣铁体系为研究对象,通过实验考察了熔分过程中铌、磷在渣铁两相间分配比的变化规律.结果表明,在本实验条件下,铌、磷的分配比随铁液中碳质量分数的增加而减小,当碳达到饱和时,铌氧化物会在渣铁界面处被还原为碳化铌,熔分终点w[C]应控制在342%以下;铌、磷的分配比随温度升高而减小,熔分温度可控制在1450℃左右;铌、磷的分配比随渣中FeO质量分数的增加而增大,熔分终点w(FeO)应控制在585%左右;铌、磷的分配比随熔渣光学碱度的升高而增大,添加MgO可明显降低磷的分配比.

References

[1]  任俊,徐广尧,王文梅.铌:铌矿冶工艺学及应用[M].南京:南京大学出版社,2001.(Ren Jun,Xu Guangyao,Wang Wenmei.Nb:niobium mining and metallurgy technology and its application[M].Nanjing:Nanjing University Press,2001.)
[2]  张波,姜茂发.利用白云鄂博含铌尾矿制备铌铁工艺的研究[J].工业加热,2011,40(3):56/59.(Zhang Bo,Jiang Maofa.Study on preparation process of ferrocolubium utilizing niobiumbearing tailings from Bayan Obo ore[J].Industrial Heating,2011,40(3):56/59.)
[3]  Yamasaki T.Distribution of niobium between liquid iron and CaOSiO2Al2O3 slag[J].TetsutoHagané,1984,17(4):133.
[4]  Inoue R,Zhang X P,Li H,et al.Distribution of Nb,P,Mn,between liquid iron and MgOsatFetOSiO2NbOxMnO slags[J].Transactions ISIJ,1987,27:946/950.
[5]  Han Q Y,Deng J,Huang S L,et al.Distribution of niobium or tantalum between fluorinecontaining slag and iron in blast furnace smelting[J].Metallurgical Transactions B,1990,21(10):873/877.
[6]  何旭初,范鹏,周渝生,等.高炉中铌还原产生的碳化铌滞留带[J].北京科技大学学报,1990,12(6):504/509.(He Xuchu,Fan Peng,Zhou Yusheng,et al.Formation of NbC detained layer in blast furnace for Nbbearing iron ore[J].Journal of University of Science and Technology Beijing,1990,12(6):504/509.)
[7]  製鋼第19委員会.製鋼反応の推獎平衡値(改訂增補)[M].東京:日本学術振興会,1984.(Steelmaking Committee No.19.Recommended equilibrium data of steelmaking reactions(revised and supplemented)[M].Tokyo:Science Promotion Committee of Japan,1984.)
[8]  Turkdogan E T.Physicalchemical properties of molten slags and glasses[M].London:Metal Society Press,1983.

Full-Text

Contact Us

service@oalib.com

QQ:3279437679

WhatsApp +8615387084133