Reduction experiment of iron scale by adding waste plastics |
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| Authors: | Chongmin ZHANG Shuwen CHEN Xincheng MIAO Hao YUAN |
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| Institution: | 1. Department of Dermatology, Faculty of Medicine, Oita University, Oita, Japan;2. Laboratory of Gene Medicine, Keio University School of Medicine, Tokyo, Japan;3. Center for Supercentenarian Medical Research, Keio University School of Medicine, Tokyo, Japan;4. Department of Biophysics, School of Fundamental Sciences, Massey University, Palmerston North, New Zealand;5. Department of Computational Genomics, School of Fundamental Sciences, Massey University, Palmerston North, New Zealand;6. Department of Matrix Biology, Faculty of Medicine, Oita University, Oita, Japan;7. Department of Dermatology, Osaka City University Graduate School of Medicine, Osaka, Japan;1. Liaoning Key Materials Laboratory for Railway, School of Materials Science and Engineering, Dalian Jiaotong University, Dalian 116028, China;2. Academy of Fundamental and Interdisciplinary Sciences, Harbin Institute of Technology, Harbin 150080, China;3. Department of Physics, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong |
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| Abstract: | The special features of waste plastics in China are huge in total amount, various in type and dispersive in deposition. Therefore, it is necessary to try some new ways that are fit to Chinese situation for disposing waste plastics as metallurgical raw materials more effectively and flexibly. Owing to its high ferrous content and less impurity, the iron scale became ideal raw material to produce pure iron powder. One of the methods to produce pure iron powder is Hoganas Method, by which, after one or multistage of reduction steps, the iron scale can be reduced pure iron powder. However, combining utilization of waste plastics and iron powder production, a series of reduction experiments were arranged and investigated, which is hoped to take use of both thermal and chemical energy contained in waste plastics as well as to improve the reducing condition of iron scale, and hence to develop a new metallurgical way of disposing waste plastics. The results show that under these experimental conditions, the thermal-decomposition of water plastics can conduce to an increase of porosity in the reduction systems. Moreover, better thermodynamics and kinetics conditions for the reduction of scale can be reached. As a result, the reduction rate is increased. |
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