Resources Recycling (자원리싸이클링)

The Korean Institute of Resources Recycling (한국자원리싸이클링학회)
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Analysis of Commercial Recycling Technology and Research Trend for Waste Cu Scrap in Korea

국내 구리 함유 폐자원의 재활용 상용화 기술 및 연구동향 분석

  • Kang, Leeseung (Materials Science and Chemical Engineering Center, Institute for Advanced Engineering) ;
  • An, HyeLan (Materials Science and Chemical Engineering Center, Institute for Advanced Engineering) ;
  • Kang, Hong-Yoon (Center for Resources Information and Management, Korea Institute of Industrial Technology) ;
  • Lee, Chan Gi (Materials Science and Chemical Engineering Center, Institute for Advanced Engineering)
  • 강이승 (고등기술연구원 융합소재연구센터) ;
  • 안혜란 (고등기술연구원 융합소재연구센터) ;
  • 강홍윤 (한국생산기술연구원 자원순환기술지원센터) ;
  • 이찬기 (고등기술연구원 융합소재연구센터)
  • Received : 2018.10.29
  • Accepted : 2018.12.11
  • Published : 2019.02.28
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Abstract

Copper is used in many electronic components and construction parts due to its excellent electrical conductivity and heat transfer characteristics, and also used for pre-plating for double layer coating such as nickel, so that copper is an essential material in modern industry. Despite the expected increase of usage and importance on wiring, sensors and data equipment in the next generation industries, it is hard for securing stable copper supply and resource management resulting from the copper prices are fluctuating owing to the economic crisis in Europe, the low economic growth trend in China, and President Trump's commitment to public industrial facilities investment in U.S.. Since most of the domestic copper consumption is used by electrolytic copper cathode, we studied not only copper recycling technology which is being commercialized but also current research trend under the research stage. This study aims to examine the characteristics of each process and the areas where future recycling technology development is required.

구리는 뛰어난 전기전도성 및 열전달 특성으로 인해 많은 전자기기 및 건축 부품에 활용되고 있고 니켈 등 다른 도금의 밑 도금으로 사용되는 등 현대 산업에서 필수적으로 사용되는 소재이다. 뿐만 아니라 차세대 산업군에서 배선, 센서, 데이터 장비의 사용량과 중요도가 더욱 커지면서 그 활용도가 더욱 커질 것으로 예상됨에도 불구하고 유럽발 경제위기, 중국 경제 저성장 기조, 트럼프 대통령의 공공 산업설비 투자 공약 등에 따라 가격이 급동하는 추세를 보여 안정적인 수급 확보 및 자원관리에 어려움을 겪는 실정이다. 국내 구리 사용량의 거의 대부분을 전기동을 이용하여 사용하기 때문에 본 연구에서는 상용화 되고 있는 구리 재활용 기술과 연구 단계에 머물고 있는 구리 재활용 기술을 구분하여 각각의 기술적 수준을 파악하였다. 이를 통해 각 공정별 특징과 향후 기술개발이 요구되는 분야를 고찰해 보고자 하였다.

Keywords

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Fig. 1. Commercial recycling process of waste copper wire and bass scrap.

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Fig. 2. Classification of copper scrap; (a) Berry, (b) Birch, (c) Cliff, (d) Clove, (e) Cobra, (f) Hhoney, (g) Lace, (h) Lake, (i) Night, (j) Label, (k) Pallu, (l) Noble, (m) Ebony, and (n) Ocean.

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Fig. 3. Schematic diagram of (a) induction crucible-type furnace and (b) channel type induction furnace.

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Fig. 4. Schematic diagram of (a) horizontal and (b) vertical continuous casting.

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Fig. 5. Schematic diagram of (a) direct and (b) indirect extrusion.

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Fig. 6. Commercial recycling process of copper dross and brass dross.

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Fig. 7. Photograph of the reduced copper after forming.

Table 1. Summary of waste brass scrap and their used place

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Table 2. List of copper scrap and their description

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Table 3. Two letters behind copper or brass indicate the origin of copper or brass. The former B and M represent that sample gathered from melting process and back filter, respectively, and the latter B and C means that sample gathered from back filter and cyclone, respectively

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References

  1. Materials flow analysis in Korea, http://www.k-mfa.kr.
  2. Korea electric engineers association, 2001 : Electric energy saving operation technology for electric equipment, The monthly electric engineers, 231(11), pp.55-59.
  3. B. G. Thomas, 2004 : Continuous Casting, Yearbook of Science and Technology, McGraw-Hill.
  4. W. W. Park, 2003 : Manufacturing of Cu Alloy Wires and Fibers via Horizontal Continuous Casting, Journal of Korea Foundry Society, 23(4), pp.212.
  5. T. Sheppard, P. J. Tunnicliffe, and S. J. Patterson, 1982 : Direct and indirect extrusion of a high strength aerospace alloy (AA 7075), Journal of Mechanical Working Technology, 6, pp.313-331. https://doi.org/10.1016/0378-3804(82)90031-6
  6. S. B. Lee, G. S. Jeon, R. Y. Jung, and I. K. Hong, 2016 : Design of Pretreatment Process of Lead Frame Etching Wastes Using Reduction-Oxidation Method, Appl. Chem. Eng, 27(1) pp.21. https://doi.org/10.14478/ace.2015.1087
  7. Y. J. Sim and E. Y. Kim, 2010 : Present condition on the recycling and management for waste acids, Korean Chem. Eng. Res., 48(3), pp.300-303.
  8. M. Toyonage, 1982 : Etching technology for printed wiring boards and regeneration of etching solution, Jpn. Pract. Surf. Technol., 29(12), pp.561-570.
  9. D. Pletcher and F. C. Walsh, 1990 : Industrial Electrochemistry, 2nd ed., 468-477, Chapman & Hall, New York.
  10. H. Lee, E. Ahn, C. Park, and Y. Tak, 2013 : Regeneration of waste ferric chloride etchant using HCl and $H_2O_2$, Appl. Chem. Eng., 24(1), pp.67-71.
  11. W. C. Bosshart, 1983 : Printed Circuit Boards - Design and Technology, McGraw-Hill, New York.
  12. H. C. Jeong, G. M. Choi, and D. J. Kim, 2006 : The prediction of etching characteristics using spray characteristics in etching process of lead-frame, Trans. Korean Soc. Mech. Eng., 30(4), pp.381-388. https://doi.org/10.3795/KSME-B.2006.30.4.381
  13. KR patent, Preparation of copper(I) cyanide from waste solution of copper(II) chloride, 10-2001-0008667.
  14. M. S. Kong, H. K. Yang, and Y. H. Jin, 2014 : Reduction process for copper by-product with fluidized bed reaction, Journal of Copper Technology, 29(1), pp.63-68.
  15. Trommer, D., Hirsch, D., and Stenfeld, A., 2004 : Kinetic investigation of the thermal decomposition of $CH_4$ by direct irradiation of a voltex-flow laden with carbon particles, Int. J. Hydrogen. Energ., 29, pp.627-633. https://doi.org/10.1016/j.ijhydene.2003.07.001

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