Copper recycling project in Japan: Super smelter and super dust concept

Masafumi Maeda, Takashi Nakamura, Yuuji Nishimura

Research output: Contribution to conferencePaperpeer-review

3 Citations (Scopus)


Our aim in this project was to develop a new copper refining technology utilizing pyrometallurgical treatment and a raw materials preparation technique. In the recycling process, raw material is not an idealized concentrate of copper sulfide but is composed of various types of scrap, industrial wastes such as sludge, ash and slag, and municipal wastes. Since we cannot expect oxidation heat in this process as in sulfide smelting, organic materials are viewed as an alternative energy source. Quality of the copper produced is targeted as 99.99% and an intermediate grade will also be marketable. To benefit the plant, rare metals and other nonferrous metals will also be recovered. The overall system is described in this paper, specific topics outlined and preliminary research presented. Current Japanese technology for recycling copper based materials is briefly reviewed.

Original languageEnglish
Number of pages7
Publication statusPublished - 1995 Dec 1
EventProceedings of the 1995 TMS Fall Symposium - Point Clear, AL, USA
Duration: 1995 Nov 121995 Nov 15


OtherProceedings of the 1995 TMS Fall Symposium
CityPoint Clear, AL, USA

ASJC Scopus subject areas

  • Engineering(all)


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