The Japan Iron & Steel Federation, as its voluntary energy-saving action plan, proposed a 10/100 energy reduction by 2010 with 1990 as the basis. Further, it has put forward an additional 1.5/100 energy reduction plastics as a metallurgical raw material. The investigation of the use of waste plastics by the steel industry has mainly focused on processing in blast furnaces. On the other hand, the coking process is considered to be a promising area to which the thermal decomposition of waste plastics is applicable because the process involves coal carbonization at a high-temperature in reducing atmosphere.
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