非鐵製鍊 프로세스를 이용한 日本의 都市鑛山 再資源化産業
Recycling Industry of Urban Mines by Applying Non-Ferrous Metallurgical Processes in Japan
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초록
일본의 주요 비철제련소는 100년 이상의 오랜 역사를 가지고 있으며 환경•리싸이클링산업을 주도하고 있다. 이러한 배경에는 오랫동안 배양된 비철제련 프로세스와 환경오염 방지의 고도화된 전문기술과 기술개발력이 기초가 되고 있다. 일본의 도시광산 재자원화산업은 고부가가치 자원의 회수와 유해폐기물 처리의 통합된 비즈니스로 전개되고 있다. 최근 도시광산으로서 E-waste(폐휴대전화, PC 등)의 비중이 높아지고 있다. 레어메탈 등의 유가금속과 유해물질을 함께 함유하고 있는 E-waste의 처리에는 비철제련(특히 복잡황화광)의 고도 분리•정제기술의 이용이 절대적이다. 이러한 관점에서 同和그룹의 리싸이클 콤비나트, JX日鑛그룹의 日鑛環境 + HMC의 리싸이클시스템과 리싸이클기술은 무한 경쟁력을 가지고 있으며, E-waste의 회수시스템 구축이 중요과제로 대두되고 있다.
Abstract
DOWA group has been working on metal recycling applying the smelting and refining process of KOSAKA Smelter. DOWA has developed it's metal recycling technologies through the treatment of black ore(complex sulfide ores) that contain many kinds of non-ferrous metals. In addition to these special technologies, DOWA has strengthened its hydrometallurgical process of precious metals and ability to deal with low-grade materials such as used electrical appliances or vehicles. On the other hand, JX Nippon Mining & Metals Corporation(JX-NMMC) carries out its metal recycling and industrial waste treatment businesses employing advanced separation, extraction and refining technologies developed through its extensive experience in the smelting of non-ferrous metals. JX-NMMC collects approximately 100,000t/y of copper and precious metal scraps from waste sources such as electronic parts, mobile phones, catalytic converters, print circuit boards and gold plated parts. These items are recycled through the smelting and refining operations of Saganoseki smelter and Hitachi Metal-recycling complex(HMC). In this like, metal recycling industries combined with environmental business service in Japan have been developed through excellent technologies for mineral processing and non-ferrous smelting. Also, both group, Dowa and JX-NMMC, were contributed to establish Japan's recycling-oriented society as the typical leading company of non-ferrous smelting. Now. it is an important issue to set up the collection system for e-waste.
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