한국분말재료학회지 (Journal of Powder Materials)

  • 제29권1호
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  • Pages.47-55
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  • 2022
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  • 2799-8525(pISSN)
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  • 2799-8681(eISSN)
한국분말재료학회 (*구 분말야금학회) (The Korean Powder Metallurgy & Materials Institute)
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알칼리 침출법을 통한 초경 공구의 재활용 및 자전연소합성법을 통해 제조된 나노급 탄화텅스텐 제조공정 연구

Recycling of Hardmetal Tool through Alkali Leaching Process and Fabrication Process of Nano-sized Tungsten Carbide Powder using Self-propagation High-temperature Synthesis

  • 강희남 (한국지질자원연구원 자원회수연구센터) ;
  • 정동일 (한국생산기술연구원 한국희소금속산업기술센터) ;
  • 김영일 (한국생산기술연구원 한국희소금속산업기술센터) ;
  • 김인영 (한국생산기술연구원 한국희소금속산업기술센터) ;
  • 박상철 (한국생산기술연구원 한국희소금속산업기술센터) ;
  • 남철우 (한국지질자원연구원 자원회수연구센터) ;
  • 서석준 (한국생산기술연구원 한국희소금속산업기술센터) ;
  • 이진영 (한국지질자원연구원 자원회수연구센터) ;
  • 이빈 (한국생산기술연구원 한국희소금속산업기술센터)
  • Kang, Hee-Nam (Geological Research Center, Korea Institute of Geoscience and Mineral Resources) ;
  • Jeong, Dong Il (Korea Institute for Rare Metals, Korea Institute of Industrial Technology) ;
  • Kim, Young Il (Korea Institute for Rare Metals, Korea Institute of Industrial Technology) ;
  • Kim, In Yeong (Korea Institute for Rare Metals, Korea Institute of Industrial Technology) ;
  • Park, Sang Cheol (Korea Institute for Rare Metals, Korea Institute of Industrial Technology) ;
  • Nam, Cheol Woo (Geological Research Center, Korea Institute of Geoscience and Mineral Resources) ;
  • Seo, Seok-Jun (Korea Institute for Rare Metals, Korea Institute of Industrial Technology) ;
  • Lee, Jin Yeong (Geological Research Center, Korea Institute of Geoscience and Mineral Resources) ;
  • Lee, Bin (Korea Institute for Rare Metals, Korea Institute of Industrial Technology)
  • 투고 : 2022.02.11
  • 심사 : 2022.02.23
  • 발행 : 2022.02.28
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초록

Tungsten carbide is widely used in carbide tools. However, its production process generates a significant number of end-of-life products and by-products. Therefore, it is necessary to develop efficient recycling methods and investigate the remanufacturing of tungsten carbide using recycled materials. Herein, we have recovered 99.9% of the tungsten in cemented carbide hard scrap as tungsten oxide via an alkali leaching process. Subsequently, using the recovered tungsten oxide as a starting material, tungsten carbide has been produced by employing a self-propagating high-temperature synthesis (SHS) method. SHS is advantageous as it reduces the reaction time and is energy-efficient. Tungsten carbide with a carbon content of 6.18 wt % and a particle size of 116 nm has been successfully synthesized by optimizing the SHS process parameters, pulverization, and mixing. In this study, a series of processes for the high-efficiency recycling and quality improvement of tungsten-based materials have been developed.

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과제정보

이 연구는 2022년도 산업통상자원부 및 산업기술평가관리원(KEIT) 연구비 지원에 의한 연구임('20011520')

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