• Title/Summary/Keyword: Resources recycling

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Trend on the Recycling Technologies for Silicon Sludge by the Patent and Paper Analysis (특허(特許)와 논문(論文)으로 본 실리콘 슬러지의 재활용(再活用) 기술(技術) 동향(動向))

  • Jang, Hee-Dong;Kil, Dae-Sup;Chang, Han-Kwon;Cho, Young-Ju;Cho, Bong-Gyoo
    • Resources Recycling
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    • v.21 no.4
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    • pp.60-68
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    • 2012

  • Silicon wafer for making semiconductor devices and solar cell is used in the semiconductor and solar industry, respectively. Silicon wafer is produced by cutting with silicon ingot and sludge contains silicon occurs from cutting process. Generation of silicon sludge is increasing on developing all industry sectors which have need of semiconductor device. These days it has been widely studied for the recycling technologies of the silicon sludge from view points of economy and efficiency. In this paper, patents and paper on the recycling technologies of the silicon sludge were analyzed. The range of search was limited in the open patents of USA (US), European Union (EU), Japan (JP), Korea (KR) and SCI journals from 1982 to 2011. Patents and journals were collected using key-words searching and filtered by filtering criteria. The trends of the patents and journals was analyzed by the years, countries, companies, and technologies.

  • https://doi.org/10.7844/kirr.2012.21.4.060 인용 PDF KSCI

Status and Strategy on Recycling of Domestic Used Chemical Catalysts (국내 사용 후 화학촉매제품의 재자원화 현황 및 향후 방향)

  • Kim, Young-Chun;Kang, Hong-Yoon
    • Resources Recycling
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    • v.26 no.3
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    • pp.3-16
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    • 2017

  • Chemical catalyst products are applied to various fields such as petrochemical process, air pollution prevention facility and automobile exhaust gas purifier. The domestic and overseas chemical catalyst market is increasing every year, and the amount of waste catalyst generated thereby is also increasing. Most of the used chemical catalyst products, such as desulfurized waste catalysts and automobile waste catalysts containing valuable metals are important recyclable resources from a substitute resource point of view. The recycling processes for recovering valuable metals have been commercialized through some urban mining companies, and SCR denitration catalysts have been recycled through some remanufacturing companies. In this paper, the amount of domestic production and recycling of major catalyst products have thus been investigated and analyzed so as to be used as basic data for establishing industrial support policy for recycling of used chemical catalyst products. Also tasks for promoting the recycling of used chemical catalyst products are suggested.

  • https://doi.org/10.7844/kirr.2017.26.3.3 인용 PDF KSCI