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关于环境保护的论文:Effect of refining slag containing Ce2O3 on steel cleanliness

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关于环境保护的论文:Effect of refining slag containing Ce2O3 on steel cleanliness

关于环境保护的论文:Effect of refining slag containing Ce2O3 on steel cleanliness

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  [关于环境保护的论文:Effect of refining slag containing Ce2O3 on steel cleanliness]Abstract:The effect of pre-melting refining slag containing different contents of Ce2O3 on the absorption and modification of Al2O3 inclusion in an Al-killed steel was investigated through the slag/steel reaction experiment at 1600 ℃.It was found that the replacement of 10 wt.%Al2O3 with Ce2O3 for 50 wt.%CaO-33 wt.%Al2O3-7 wt.%MgO-10 wt.%SiO2 refining slag promoted the slag absorption ability of alumina inclusion,which made the total oxygen content determined by infrared absorption method decrease from 100 to 25 ppm in 15 min.The Mg-Al-Ce-O type inclusion was also detected in the as-solidified samples by scanning electron microscopy (SEM).Thermodynamic analysis indicated that the Ce2O3·Al2O3 type inclusions would be formed with the cerium content in the range of 6.9 ppb to 3.6 ppm when the content of aluminum was 0.01 wt.%. 作者: Author: YANG Xiaohong  LONG Hu  CHENG Guoguang  WU Chengchuan  WU Bin 作者单位: State Key Laboratory of Advanced Metallurgy, University of Science and Technology Beijing, Beijing 100083, China 期 刊: 稀土学报(英文版)   ISTICEISCI Journal: Journal of Rare Earths 年,卷(期): 2011, 29(11) 分类号: X757 Keywords: Ce2O3 slag    inclusion    cleanliness    rare earths    机标分类号: TF4 TU5 机标关键词: steel cleanliness    scanning electron microscopy    refining slag    total oxygen content    Al2O3    absorption method    experiment    different    type    range of    analysis    ppm    would    found    SiO2    made    SEM 基金项目: the National Natural Science Foundation of China Effect of refining slag containing Ce2O3 on steel cleanliness[期刊论文]  稀土学报(英文版) --2011, 29(11)The effect of pre-melting refining slag containing different contents of Ce2O3 on the absorption and modification of Al2O3 inclusion in an Al-killed steel was investigated through the slag/steel reacti...
关于环境保护的论文:Effect of refining slag containing Ce2O3 on steel cleanliness2
  第2篇 Toxicological effects and risk assessment of lanthanum ions on leave
  〖预览〗Abstract:Viciafaba L.seedlings were hydroponically cultivated in 0-12 mg/L of extraneous lanthanum (La) for 15 d to investigate ecotoxicological effects and risk assessment of rare earth elements (REEs).The results showed that reactive oxygen species (ROS) production such as superoxide radical (O2-) and hydrogen peroxide (H2O2) were overproduced at higher concentrations of La,resulting in oxidatively modified proteins and shoot growth retardation.While,superoxide dismutase (SOD),catalase (CAT),ascorbate peroxidase (APX) and guaiacol peroxidase (GPX) isoenzymes w……【全文阅读:Toxicological effects and risk assessment of lanthanum ions on leave
关于环境保护的论文:Effect of refining slag containing Ce2O3 on steel cleanliness3
  第3篇 Log integration on large scale for global networking monitoring
  〖预览〗Abstract:Supposing that the overall situation is dug out from the distributed monitoring nodes, there should be two critical obstacles, heterogenous schema and instance, to integrating heterogeneous data from different monitoring sensors. To tackle the challenge of heterogenous schema, an instance-based approach for schema mapping, named instance-based machine-learning (IML) approach was described. And to solve the problem of heterogenous instance, a novel approach, called statistic-based clustering (SBC) approach, which utilized clustering and statistics techno……【【上一页】  【下一页】  【手机版】
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