Investigation on the Material Flow of Cobalt for Resource Recovery and Recycling of Strategic-Metal Scrap

戰略金屬 스크랩 資源化를 위한 코발트 物質흐름 現況調査

  • Sohn, Jeong-Soo (Mineral and Material Processing Division, Korea Institute of Geoscience and Mineral Resources) ;
  • Yang, Dong-Hyo (Mineral and Material Processing Division, Korea Institute of Geoscience and Mineral Resources) ;
  • Shin, Shun-Myung (Mineral and Material Processing Division, Korea Institute of Geoscience and Mineral Resources) ;
  • Kang, Eun-Hee (Mineral and Material Processing Division, Korea Institute of Geoscience and Mineral Resources)
  • 손정수 (韓國地質資源硏究院 資源活用素材硏究部) ;
  • 양동효 (韓國地質資源硏究院 資源活用素材硏究部) ;
  • 신선명 (韓國地質資源硏究院 資源活用素材硏究部) ;
  • 강은희 (韓國地質資源硏究院 資源活用素材硏究部)
  • Published : 2005.04.01

Abstract

As world population increases and the world economy expalds, so does the demand for natural resources especially strategic metals such as cobalt. An accurate assesment of the nation's minerals must include not only the resources available in the ground but also those that become available through recycling. In this paper, data on domestic and international supply of cobalt and its applications by end-user were analyzed for stable security of cobalt resources and effective recycling of cobalt scraps. Also, an initial evaluation of the flow of cobalt-containing materials in the United States was prepared. In 2003, 8,000 metric tons of cobalt were consumed in the United States and an estimated 28% of U.S. cobalt supply was derived from scrap. The superalloy industry and catalyst industries have well-established recycling or cobalt recovery practices. Recycling rates of cobalt scraps from magnet alloy and cemented carbide were relatively low.

세계의 인구증가와 경제성장에 따라 천연자원 특히 전략금속의 수요가 급격히 증가하고 있다. 국가가 보유하고 있는 자원의 양은 천연자원 뿐 아니라 재활용을 통하여 얻을 수 있는 폐자원을 함께 포함해야 한다. 본 연구에서는 전략금속의 안정적 확보와 폐자원의 효율적 재활용을 위하여 코발트의 국내외 사용현황 등을 조사하였으며 아울러 미국 내에서의 코발트 물질흐름에 대한 자료를 정리하였다. 그 결과 미국에서는 2003년도에 약 8,000톤의 코발트가 사용되었으며 원료로 재사용된 스크랩의 양은 총사용량의 28%인 2,200톤이었다. 미국의 경우 초합금과 촉매의 재활용은 잘 이루어지고 있으나 자석류와 초경합금의 경우 재활용율이 다소 낮음을 알 수 있었다.

Keywords

References

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