| 转底炉处理冶金粉尘工艺的锌钾钠脱除及烟气形成 |
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| 引用本文： | 王静松,杨慧贤,佘雪峰,曾晖,丁银贵,薛庆国.转底炉处理冶金粉尘工艺的锌钾钠脱除及烟气形成[J].重庆大学学报(自然科学版),2011,34(3):82-88. |
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| 作者姓名： | 王静松 杨慧贤 佘雪峰 曾晖 丁银贵 薛庆国 |
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| 作者单位： | 王静松,杨慧贤,余雪峰,丁银贵,薛庆国,WANG Jing-song,YANG Hui-xian,SHE Xue-feng,DING Yin-gui,XUE Qing-guo(北京科技大学,教育部生态与循环冶金重点实验室;冶金与生态工程学院,北京,100083);曾晖,ZENG Hui(山东莱芜钢铁集团公司技术研发中心,山东,莱芜,271004) |
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| 基金项目： | 国家发改委循环经济示范工程项目，中央高校基本科研业务费专项资金资助项目 |
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| 摘 要： | 转底炉直接还原处理钢铁厂冶金粉尘过程中,Zn、K、Na等元素的脱除及烟气形成过程对转底炉工艺实施效果影响很大.采用高温管式炉模拟转底炉工艺条件,用钢铁厂含锌粉尘制成内配碳球团,进行直接还原实验研究,并收集实验过程产生的烟气和二次粉尘,对烟气中的气体成分以及烟气中的二次粉尘进行化学成分、微观结构以及物相组成分析.研究证明:Zn的脱除率可以达到98%,K、Na、Pb的脱除率分别达到80%、88%和85%;烟气中N2、CO、CO2的体积分数分别为71.4%、14.5%和14.1%;烟气中二次粉尘主要物相为ZnO、KCl、Zn5(OH)8CI2H2O、PbO和NaCl,二次粉尘中ZnO含量高达80%,可作为二次锌资源加以利用.在此基础上分析了转底炉直接还原过程中Zn、Ph、K、Na脱除和烟气形成机理.
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| 关 键 词： | 转底炉 粉尘 直接还原 脱锌 |
| 收稿时间： | 2010/10/5 0:00:00 |
Study on mechanism of Zn, K, Na removal and flue gas formation in RHF direct reduction treat metallurgical dust process |
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| WANG Jing-song,YANG Hui-xian,SHE Xue-feng,ZENG Hui,DING Yin-gui and XUE Qing-guo.Study on mechanism of Zn, K, Na removal and flue gas formation in RHF direct reduction treat metallurgical dust process[J].Journal of Chongqing University(Natural Science Edition),2011,34(3):82-88. |
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| Authors: | WANG Jing-song YANG Hui-xian SHE Xue-feng ZENG Hui DING Yin-gui and XUE Qing-guo |
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| Institution: | WANG Jing-song1,YANG Hui-xian1,SHE Xue-feng1,ZENG Hui2,DING Yin-gui1,XUE Qing-guo1(1.Key Laboratory of Ecological and Recycle Metallurgy,School of Metallurgical and Ecological Engineering,University of Science and Technology Beijing,Beijing 100083,P.R.China,2.Technical Research and Development Center of Lai Gang Group CO.,Laiwu,Shandong 271004,P.R.China) |
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| Abstract: | In metallurgical dusts treating by RHF(rotary hearth furnace) direct reduction,processes of Zn,K,Na removal and flue gas formation have significantly influence on RHF process.Direct reduction experiment on cold bonded briquettes,made by mixing metallurgical zinc-bearing dusts with proper proportions,are investigated in a high temperature tube furnace simulated RHF.Ingredients,microstructures and phase compositions of flue gas and secondary dust are collected and analyzed.The results show that removal rates ... |
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| Keywords: | rotary hearth furnace metallurgical dust direct reduction dezincification |
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