A blog from University of Borås

Friday, February 3, 2012

Metals recycling in Sweden

Stena Recycling AB is a large company in Sweden that is active in recycling of wastes. This company collect different recycling wastes such as metals and papers in Sweden and other neibouring countries in their 200 plants, and treat them until becoming raw materials for other industries. One interesting part of this process is how to separate the mixture of different metals in e.g. a car or household wastes or industrial wastes. In this process (figure below), after crushing by mills, magnets are used to separate iron followed by separation using density differences of the metals. It seems they recycle about 99% of the metals which is a very good number. It is a good business considering the prices of the metals that go up every day!

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