Canadian Plastics Industry Association

Automotive Shredder Residue its Application as a Reductant and Fuel in the Blast Furnaces of the Steel Industry

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Courtesy of Canadian Plastics Industry Association

Each year approximately 12 million automobiles, which have reached the end of their useful lives, are shredded in North America for the recovery of steel and other metals. Along with the metals the shredding operation produces a by-product known as autoshredder residue (ASR). ASR is a diverse mixture of organic and inorganic materials such as plastics, textile fabrics, glass etc.North American shredding operations generate almost 3 million tonnes of ASR annually most of which is landfilled. The paper describes an investigation, sponsored by the Environment and Plastics Industry Council of the Canadian Plastics Industry Association and the American Plastics Council, into the recovery of the organic fraction of ASR and its potential application in the production of steel as a replacement for coke in a blast furnace. A method is proposed to upgrade ASR to an organic rich, low ash, stream capable of being fed into the combustion zone of a blast furnace through the oxygen tuyeres. A brief discussion of technical issues is presented along with a description of the environmental and economic benefits of the process.

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