廃プラの炭材としての利用技術
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概要
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Disposal of waste plastics amounts to about 10 million-t every year and 3 million-t of them are occupied to fill land and one of the causes to extinct space in Japan. As far, waste plastics have been applied to rotary kiln for cement manufacturing and fuel of blast furnace and coke oven as typical use. On the other side, use of carbon materials has been also developed on decrease of electric power consumption and oxygen blowing operation in an electric arc furnace. In this paper, a recycling technique has been developed to utilize waste plastics as one of carbon materials for an electric furnace, and the effectiveness was examined by using a mass-production furnace. Results obtained are as follows. 1) Reduction of electric power consumption Reduction of electric power consumption comparable with coke can be confirmed. 2) The increase of [C] in melting steel A several percent increase by carbon containing plastics is confirmed.
- 電気製鋼研究会の論文