Thermodynamic Stuby on the Removal of Copper in Steel Scrap by Sulfide Fluxes

硫化物熔剂脱废钢中铜的热力学研究

基本信息

  • 批准号:
    01550515
  • 负责人:
  • 金额:
    $ 1.02万
  • 依托单位:
  • 依托单位国家:
    日本
  • 项目类别:
    Grant-in-Aid for General Scientific Research (C)
  • 财政年份:
    1989
  • 资助国家:
    日本
  • 起止时间:
    1989 至 1990
  • 项目状态:
    已结题

项目摘要

The tramp elements such as Cu, Sn, Sb etc. in steel scrap can not be removed by the traditional steelmaking process. Therefore, economical prcesses to remove these impurities have to be developed for the recycling of steel scrap. Present work dealt with the thermodmynamics on the removal of tramp elements, mainly Cu, in liquid iron by using sulfide flux. The present investigation consisted of following four parts.1) Phase equilibria in the basic system of Fe-S-C ternary melt were measured and thermodynamic properties of this system were evaluated by applying interstitial solution model.2) The activities of Cu, Sn, Sb in Fe-S-C_<sat>. Melts were experimentally determined.3) The distribution ratio of Cu, Sn, Sb Ni, Cr, Mn or Mo between FeS-Na_2S flux and Fe-C_<sat>. melt was measured at 1673K. The addition of Na_2S to FeS increased the distribution ratio of Cu, L_<Cu>=(mass%Cu)_<flux>/[mass%Cu]_<iron>, from 9 at X_<NaS_<0.5>>=0 to the maximum of L_<Cu>=24 at X_<Nas_<0.5>>=0.4. Na_2S also … More considerably lowered sulfur content in liquid iron. The activity coefficient of CuS_<0.5> in flux was evaluated to discuss the effect of Na_2S on L_<Cu>. It was founs that Na_2S decreased gamma CuS_<0.5>, so that L_<Cu> increased in spite of the significant decrease of sulfur potential. The distribution ratios of Sn, Sb, Ni, Cr and Mo were very low, while L_<Mn> was very high.4) Effect of alkaline or alkaline earth metal sulfides on L_<Cu> was studied. Similar to the effect of Na_2S, Li_2S, K_2S, SrS or BaS increased L_<Cu> and lowered sulfur content in liquid iron. The maximum of L_<Cu> in each flux were about 20 to 30. Thermodynamic consideration was made to discuss the removal limit of Cu from liquid iron by sulfide fluxes.It was concluded from the present work that Cu can be removed from liquid iron by sulfide flux. However, L_<Cu> was not high enough for the practical application. Therefore, we need more effort to develop the effective Cu removal process from remelted steel scrap. Less
废钢中的铜、锡、锑等杂质元素,用传统的炼钢工艺无法去除。因此,必须开发经济的方法来去除这些杂质,以回收废钢。本文研究了硫化物熔剂去除铁液中以铜为主的杂质元素的热力学。本研究包括以下四个部分:1)测定了Fe-S-C三元熔体基本体系的相平衡,并应用间隙溶液模型计算了该体系的热力学性质; 2)计算了Cu、Sn、Sb在Fe-S-C中的活度<sat>。3)研究了Cu、Sn、Sb、Ni、Cr、Mn、Mo在FeS-Na_2S熔剂和Fe-C_2S熔剂中的分配比<sat>。在1673 K下测量熔体。Na 2S的加入使Cu在FeS中的分配比L <Cu>=(mass%Cu)<flux>/[mass%Cu]<iron>从X &lt;NaS&gt;=0时的9<0.5>增加到X &lt;Nas&gt;=0.4时的最大值L <Cu>=24<0.5>。Na_2S也 ...更多信息 大大降低了铁水中的硫含量。通过<0.5>测定助熔剂中CuS_2的活度系数,探讨了Na_2S对L_2的影响<Cu>。发现Na_2S使γ CuS_2降低<0.5>,<Cu>从而使硫势显著降低,但L_2增加。Sn、Sb、Ni、Cr和Mo的分配比很低,而L_2<Mn>很高。4)研究了碱金属和碱土金属硫化物对L_2的影响<Cu>。Li_2S、K_2S、SrS和BaS的作用与Na_2S相似,都能提高铁液中的L_<Cu>(10),降低铁液中的硫含量。各通量的最大L_<Cu>(max)在20 ~ 30之间。从热力学角度讨论了硫化物熔剂对铁液中铜的去除极限,得出硫化物熔剂可以去除铁液中铜的结论。但是,L_<Cu>(max)对于实际应用来说不够高。因此,我们需要更多的努力,以开发有效的去除铜重熔废钢工艺。少

项目成果

期刊论文数量(15)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
王 潮: "FeSーNa_2系フラックスと炭素飽和溶鉄間の銅の分配平衡" 鉄と鋼. 77. 504-511 (1991)
王超:“FeS-Na_2 体系熔剂与碳饱和铁水之间的铜分布平衡”Tetsu to Hagane 77. 504-511 (1991)。
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    0
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王潮: "Fe-S-C三元系融体の相平衡" 材料とプロセス. 2. 1239 (1989)
王超:“Fe-S​​-C三元熔体的相平衡”材料与工艺2. 1239 (1989)。
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王 潮: "FeSフラックスと炭素飽和溶鉄間の銅分配に及ぼすアルカリ及びアルカリ土類金属硫化物添加の影響" 鉄と鋼. 77. (1991)
Chao Wang:“添加碱金属和碱土金属硫化物对 FeS 熔剂和碳饱和铁水之间的铜分配的影响”Tetsu to Hagane 77。(1991)
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王潮: "FeーSーC3元系融体の相平衡" 鉄と鋼 ((社)日本鉄鋼協会会誌). 77. 353-360 (1991)
王超:“Fe-S​​-C三元熔体的相平衡”Tetsu to Hagane(日本钢铁研究所学报)77. 353-360(1991)。
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王潮: "溶融FeS-炭素飽和溶鉄間の銅分配に及ぼすアルカリ、またはアルカリ土類金属硫化物添加の影響" 材料とプロセス. 2. 1241 (1989)
王超:“添加碱金属或碱土金属硫化物对熔融 FeS 和碳饱和熔融铁之间的铜分布的影响”材料和工艺。 2. 1241 (1989)。
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NAGASAKA Tetsuya其他文献

Substance flow analysis of zinc associated with iron and steel cycle in Japan, and environmental assessment on its recycling process"
日本钢铁循环相关锌的物质流分析及其回收过程环境评价"
  • DOI:
  • 发表时间:
    2008
  • 期刊:
  • 影响因子:
    0
  • 作者:
    NAKAJIMA Kenichi;MATSUBAE-YOKOYAMA Kazuyo;NAKAMURA Shinichiro;ITOH Satoshi;NAGASAKA Tetsuya
  • 通讯作者:
    NAGASAKA Tetsuya
Substance Flow Analysis of Molybdenum Associated with Iron and Steel Flow in Japanese Economy
日本经济中与钢铁流动相关的钼物质流动分析
  • DOI:
  • 发表时间:
    2007
  • 期刊:
  • 影响因子:
    0
  • 作者:
    NAKAJIMA Kenichi;YOKOYAMA Kazuyo;MATSUNO Yasunari;NAGASAKA Tetsuya
  • 通讯作者:
    NAGASAKA Tetsuya

NAGASAKA Tetsuya的其他文献

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{{ truncateString('NAGASAKA Tetsuya', 18)}}的其他基金

Production Process of Zinc Metal from Electric Arc Furnace Dust
利用电弧炉烟尘生产金属锌工艺
  • 批准号:
    22656171
  • 财政年份:
    2010
  • 资助金额:
    $ 1.02万
  • 项目类别:
    Grant-in-Aid for Challenging Exploratory Research
Development of Slag-making Technology
造渣技术的发展
  • 批准号:
    21246114
  • 财政年份:
    2009
  • 资助金额:
    $ 1.02万
  • 项目类别:
    Grant-in-Aid for Scientific Research (A)
Advanced recycling of steelmaking slag as a new phosphorus resource
炼钢渣深度回收利用作为新型磷资源
  • 批准号:
    18360433
  • 财政年份:
    2006
  • 资助金额:
    $ 1.02万
  • 项目类别:
    Grant-in-Aid for Scientific Research (B)
Formation mechanism of thermal NOx on the surface of oxide catalysts
氧化物催化剂表面热NOx的形成机理
  • 批准号:
    12450301
  • 财政年份:
    2000
  • 资助金额:
    $ 1.02万
  • 项目类别:
    Grant-in-Aid for Scientific Research (B)
Investigation on the Dripping Behavior of Primary Slag Melt in the Cohesive Zone of the Blast Furnace Through Iron or Oxide Funnel
高炉粘性区一次炉渣熔体通过铁或氧化物漏斗滴落行为的研究
  • 批准号:
    09650801
  • 财政年份:
    1997
  • 资助金额:
    $ 1.02万
  • 项目类别:
    Grant-in-Aid for Scientific Research (C)
Phase Equilibria on Fe-Cu Based Alloys Used for Electrically Conductive Materials
导电材料用铁铜基合金的相平衡
  • 批准号:
    07650864
  • 财政年份:
    1995
  • 资助金额:
    $ 1.02万
  • 项目类别:
    Grant-in-Aid for Scientific Research (C)

相似海外基金

Green Hydrogen; steel manufacturing; hydrogen economy; CO2 emissions; DRI; steel scrap; impurity
绿色氢;
  • 批准号:
    2649630
  • 财政年份:
    2022
  • 资助金额:
    $ 1.02万
  • 项目类别:
    Studentship
Material/substance flow analysis of multiple substances for efficient recycling of steel scrap and alloying elements
多种物质的材料/物质流分析,用于废钢和合金元素的高效回收
  • 批准号:
    15K00641
  • 财政年份:
    2015
  • 资助金额:
    $ 1.02万
  • 项目类别:
    Grant-in-Aid for Scientific Research (C)
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