发明申请
US20170247773A1 MOLTEN STEEL DESULFURIZATION METHOD, MOLTEN STEEL SECONDARY REFINING METHOD, AND MOLTEN STEEL MANUFACTURING METHOD
审中-公开
基本信息:
- 专利标题： MOLTEN STEEL DESULFURIZATION METHOD, MOLTEN STEEL SECONDARY REFINING METHOD, AND MOLTEN STEEL MANUFACTURING METHOD
- 申请号：US15592693 申请日：2017-05-11
- 公开(公告)号：US20170247773A1 公开(公告)日：2017-08-31
- 发明人： Satoshi KINOSHIRO , Toshiyuki ITO , Ryo KAWABATA , Toshiro ISHIGE , Kyoko FUJIMOTO , Masao INOSE
- 申请人： JFE STEEL CORPORATION
- 申请人地址： JP Tokyo
- 专利权人： JFE STEEL CORPORATION
- 当前专利权人： JFE STEEL CORPORATION
- 当前专利权人地址： JP Tokyo
- 优先权： JP2011-176633 20110812; JP2011-176635 20110812; JP2012-171212 20120801
- 主分类号： C21C7/064
- IPC分类号： C21C7/064 ; G01N33/00 ; C21C7/06 ; G01N21/64 ; C21C7/00 ; C21C7/10
摘要：
A method for desulfurizing molten steel comprising taking a sample out from molten steel after tapping from a converter or during secondary refining and analyzing the sample rapidly with high accuracy by a method comprising a high frequency induction heating step wherein the sample is combusted and oxidized under the high frequency induction heating in an oxygen atmosphere having an oxygen purity of 99.5 vol % or more to convert S in the sample into SO2 and an analyzing step wherein SO2-containing gas produced in the high frequency induction heating step is analyzed through an ultraviolet fluorescence method to quantify S concentration of the sample.
公开/授权文献:
IPC结构图谱:
| C | 化学；冶金 |
| --C21 | 铁的冶金 |
| ----C21C | 生铁的加工处理，例如精炼、熟铁或钢的冶炼；熔融态下铁类合金的处理 |
| ------C21C7/00 | 熔融铁类合金的处理，例如不包括在C21C1/00到C21C5/00组的钢 |
| --------C21C7/04 | .添加处理剂去除杂质 |
| ----------C21C7/064 | ..脱磷；脱硫 |