Magnetic Separation of Phosphorus Enriched Phase from Multiphase Dephosphorization Slag

被引:1
|
作者
Kubo, Hironari [1 ]
Matsubae-Yokoyama, Kazuyo [1 ]
Nagasaka, Tetsuya [1 ]
机构
[1] Tohoku Univ, Grad Sch Environm Studies, Sendai, Miyagi 980, Japan
关键词
multiphase slag; dephosphorization slag; phosphorus recycling; calcium phosphate; magnetic separation; PARTITION;
D O I
10.2355/tetsutohagane.95.300
中图分类号
TF [冶金工业];
学科分类号
0806 ;
摘要
The authors have found that phosphorus exhibits remarkable segregation in the exhausted actual hot metal pretreatment slag (dephosphorization slag) and it exists as 3CaO center dot P2O5-2CaO-SiO2 solid solution together with FeO-CaO-SiO2 matrix. Since their magnetic properties are significantly different, it is possible to separate them with the aid Of Superconducting strong magnetic field. In order to investigate effects of magnetic field strength, particle size of slag and so on, the experiment of the magnetic separation has been carried Out by using simulated dephosphorization slag (18.1 FetO-45.9CaO-20.3SiO(2)-6.6P(2)O(5)-2.5MnO-5.5MgO in mass%) and super conducting magnet with 0.5 to 2.5 T At stronger magnetic field, the quality of the recovered slag becomes better due to smaller contamination of FetO matrix phase while its quantity becomes worse and the amount of recovered slag is smaller. However, the quantity of the recovered slag can be improved by repeating the magnetic separation procedure. In the present experiment, about 65% of phosphorus enriched slag can be recovered with less than 10% of FetO matrix phase contamination at the condition of 0.5 T, particle size of smaller than 35 mu m and water/slag ratio of 32 with single procedure. P2O5 content in the recovered slag is very close to that in the phosphorus enriched phase in the initial slag and FetO content is markedly decreased with magnetic separation.
引用
收藏
页码:A300 / A305
页数:6
相关论文
共 50 条
  • [1] Magnetic Separation of Phosphorus Enriched Phase from Multiphase Dephosphorization Slag
    Kubo, Hironari
    Matsubae-Yokoyama, Kazuyo
    Nagasaka, Tetsuya
    [J]. ISIJ INTERNATIONAL, 2010, 50 (01) : 59 - 64
  • [2] ENRICHMENT, SEPARATION, AND RECOVERY OF PHOSPHORUS FROM DEPHOSPHORIZATION SLAG
    Yan-Ling, Z.
    Ming, G.
    Feng-Shan, L.
    Kan, Y.
    [J]. ARCHIVES OF METALLURGY AND MATERIALS, 2018, 63 (04) : 1769 - 1783
  • [3] Recycling Effect of Residual Slag after Magnetic Separation for Phosphorus Recovery from Hot Metal Dephosphorization Slag
    Matsubae-Yokoyama, Kazuyo
    Kubo, Hironari
    Nagasaka, Tetsuya
    [J]. TETSU TO HAGANE-JOURNAL OF THE IRON AND STEEL INSTITUTE OF JAPAN, 2009, 95 (03): : A306 - A312
  • [4] Recycling Effects of Residual Slag after Magnetic Separation for Phosphorus Recovery from Hot Metal Dephosphorization Slag
    Matsubae-Yokoyama, Kazuyo
    Kubo, Hironari
    Nagasaka, Tetsuya
    [J]. ISIJ INTERNATIONAL, 2010, 50 (01) : 65 - 70
  • [5] Separation of phosphorus from dephosphorization slag modified by alkaline oxide by HCl leaching
    Kong, Hui
    Du, Chuan-ming
    [J]. JOURNAL OF IRON AND STEEL RESEARCH INTERNATIONAL, 2023, 30 (04) : 687 - 696
  • [6] Separation of phosphorus from dephosphorization slag modified by alkaline oxide by HCl leaching
    Hui Kong
    Chuan-ming Du
    [J]. Journal of Iron and Steel Research International, 2023, 30 : 687 - 696
  • [7] Mass Transfer Behavior of Phosphorus from the Liquid Slag Phase to Solid 2CaO•SiO2 in the Multiphase Dephosphorization Slag
    Xie, Senlin
    Wang, Wanlin
    Luo, Zhican
    Huang, Daoyuan
    [J]. METALLURGICAL AND MATERIALS TRANSACTIONS B-PROCESS METALLURGY AND MATERIALS PROCESSING SCIENCE, 2016, 47 (03): : 1583 - 1593
  • [8] Mass Transfer Behavior of Phosphorus from the Liquid Slag Phase to Solid 2CaO·SiO2 in the Multiphase Dephosphorization Slag
    Senlin Xie
    Wanlin Wang
    Zhican Luo
    Daoyuan Huang
    [J]. Metallurgical and Materials Transactions B, 2016, 47 : 1583 - 1593
  • [9] Wet magnetic separation of phosphorus containing phase from modified BOF slag
    Wu, X. R.
    Yang, G. M.
    Li, L. S.
    Lu, H. H.
    Wu, Z. J.
    Shen, X. M.
    [J]. IRONMAKING & STEELMAKING, 2014, 41 (05) : 335 - 341
  • [10] A Kinetic Study on Selective Leaching of Phosphorus from Dephosphorization Slag
    Chuan-ming Du
    Xu Gao
    Shigeru Ueda
    Shin-ya Kitamura
    [J]. Journal of Sustainable Metallurgy, 2020, 6 : 724 - 738