- Study on the Reduction of Forging Oxide Scale using Hydrogen
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Dong-Won Lee, Jung-Yeul Yun, Shun-Myung Shin, In-Soo Kim, Jei-Pil Wang
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J Korean Powder Metall Inst. 2013;20(3):174-179.
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DOI: https://doi.org/10.4150/KPMI.2013.20.3.174
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- The study on the fabrication of iron powder from forging scales using hydrogen gas has been conducted on the effect of hydrogen partial pressure, temperature, and reactive time. The mechanism for the reduction of iron oxides was proposed with various steps, and it was found that reduction pattern might be different depending on temperature. The iron content in the scale and reduction ratio of oxygen were both increased with increasing reactive time at 0.1atm of hydrogen partial pressure. On the other hand, for over 30 minutes at 0.5 atm of hydrogen partial pressure, the values were found to be almost same. In the long run, iron metallic powder was obtained with over 90% of iron content and an average size of its powder was observed to be about 100µm.
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- Trend in Research and Development of Recovery of Valuable Metallic Powder from Wasted Batteries
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Shun-Myung Shin, Sung-Ho Joo, Dong-Won Lee, Jung-Yeul Yun, Jei-Pil Wang
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J Korean Powder Metall Inst. 2013;20(1):60-67.
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DOI: https://doi.org/10.4150/KPMI.2013.20.1.060
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186
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