发明授权
- 专利标题： Self-fluxing pellets for blast furnace and method for manufacturing the same
- 专利标题（中）： 高炉自熔颗粒及其制造方法
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申请号： US12680855申请日： 2008-12-15
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公开(公告)号： US08211204B2公开(公告)日： 2012-07-03
- 发明人: Eisaku Yasuda , Nobuhiro Hasegawa , Yoshiyuki Matsui , Shuji Kitayama
- 申请人： Eisaku Yasuda , Nobuhiro Hasegawa , Yoshiyuki Matsui , Shuji Kitayama
- 申请人地址： JP Kobe-shi
- 专利权人： Kobe Steel, Ltd.
- 当前专利权人： Kobe Steel, Ltd.
- 当前专利权人地址： JP Kobe-shi
- 代理机构： Oblon, Spivak, McClelland, Maier & Neustadt, L.L.P.
- 优先权： JP2007-329065 20071220
- 国际申请： PCT/JP2008/072774 WO 20081215
- 国际公布： WO2009/081784 WO 20090702
- 主分类号： C22B1/16
- IPC分类号： C22B1/16
摘要：
Provided are self-fluxing pellets for a blast furnace, characterized in that a CaO/SiO2 mass ratio C/S is 0.8 or more and a MgO/SiO2 mass ratio M/S is 0.4 or more; when an iron content (mass %) in the entire pellet is represented by % TFe, % TFe is 65% or less; and a temperature Ts (unit: ° C.) at which the pressure loss starts to increase sharply in a loaded high-temperature reduction test and which is calculated by the equation below is 1290° C. or higher: Ts=110×C/S+100×M/S+25×% TFe−480. Equation:
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