Study on Reduction Method of Carbon-Dioxide Gas Generation Using Wastes in Iron-Making process

利用炼铁过程废物减少二氧化碳气体产生方法的研究

• 批准号: 17510076
• 负责人: MORI Koji
• 金额: $ 2.54万
• 依托单位: Osaka Electro-Communication University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2005
• 资助国家: 日本
• 起止时间: 2005 至 2007
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-17510076/
• 关键词: Wastes; Reduced Metal; Carbon-Dioxide; Global Warming; Iron and Steel-Making

This study aimed to propose the method of reduction of carbon-dioxide gas generation in iron and steel making processes using wastes instead of coals and to contribute the suppression of global warming. The studies achieved are as follows ;1. Production of reduced iron1.1 Gasification of wastes and reduced iron production by reducing gasThe reducing method to put the iron are into the reducing gas made by wastes was proposed. The model of reduction reaction was proposed and the reduction experiments to obtain the suitable reduction conditions were carried out. The data showed that reduction actually occurred, but the reaction rate was very small.1.2 Reduction experiments using pellets of wastes and iron are mixturesIn order to increase productivity of reduced iron, pellets of crashed wastes and iron are mixtures were examined. The experiments revealed that the best conditions for reduction were mixing ratio of iron are of about 50% and heating temperature of around 1400℃. The effect of grain size distribution was not so important. Chemical and EPMA analysis was carried out to evaluate the quality of the reduced iron, and the data showed that the iron had the metallic Fe content of 95% and was reduced uniformly in it.Plastics and food wastes were also investigated for reducing agents. The plastic was vaporized in high temperature and it was impossible to reduce iron ore. On the other hand, the food wastes were found a good reducing agent.2 Amount of wastes in Japan and CanadaIn Japan wastes of woods, tires and plastics were generated 21 million tons, 200 thousand tons and 10 million tons every year. In Canada 25% of wastes in Japan was generated every year. However, the cost of collecting the wastes in Canada is too high to use them effectively.

本研究的目的是提出在钢铁生产过程中使用废弃物代替煤炭减少二氧化碳气体产生的方法，并为抑制全球变暖做出贡献。主要研究成果如下：1.还原铁的生产1.1废弃物的气化及还原气生产还原铁提出了将铁粉加入废弃物制得的还原气中进行还原的方法。提出了还原反应模型，并进行了还原实验，以获得合适的还原条件。数据表明，还原实际上发生，但反应速率非常小。1.2还原实验使用球团的废物和铁的混合物为了提高还原铁的生产率，球团粉碎的废物和铁的混合物进行了检查。实验结果表明，最佳还原条件为：铁的掺入量为50%左右，加热温度为1400℃左右。粒度分布的影响不是很重要。对还原铁进行了化学分析和电子探针分析，结果表明，还原铁的金属铁含量为95%，且还原均匀。塑料在高温下蒸发，不可能还原铁矿石。另一方面，食物废物被发现是一个很好的还原剂。2日本和加拿大的废物量在日本，木材，轮胎和塑料废物每年产生2100万吨，20万吨和1000万吨。在加拿大，日本每年产生25%的废物。然而，在加拿大收集废物的成本太高，无法有效利用它们。

项目成果

杉小径木の圧縮半炭化燃料の圧縮強度・発熱量特性

小径杉木压缩烘焙燃料的抗压强度和热值特性

• 发表时间: 2007
• 期刊: 高温学会誌 33巻1号
• 作者: Takashi Otsu;et al.;澤井 徹
• 通讯作者: 澤井 徹

Casification Characteristics of Waste Wood Chips in Air Blowing

废木片气吹的箱化特性

• 发表时间: 2005
• 期刊: proc.16th International Symposium on transport Phenomena (CD-ROM)
• 作者: T.Sawai;T.Kajimoto;Koji Mori;Koji Mori
• 通讯作者: Koji Mori

Assessment of Transport Property of Semi-Carbonized Forestry Biomass Fuel

半碳化林业生物质燃料运输性能评价

• 发表时间: 2006
• 期刊: 近畿大学生物理工学部紀要 17
• 作者: T.Sawai;T.Kajimoto
• 通讯作者: T.Kajimoto

廃棄物を用いた還元鉄製造に関する研究

利用废弃物还原铁生产的研究

• 发表时间: 2007
• 作者: Koji MORI;Takeshi ONOUE;森 幸治
• 通讯作者: 森 幸治

Study on Production of Bio-Ethanol from Food Wastes

餐厨垃圾生产生物乙醇的研究

• 发表时间: 2006
• 作者: Koji MORI;Takeshi ONOUE;森 幸治;Koji Mori;Koji Mori
• 通讯作者: Koji Mori