| 含砷硫酸渣预氧化-弱还原脱砷球团工艺研究 |
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| 引用本文： | 李二平,邱亚群,向仁军,成应向. 含砷硫酸渣预氧化-弱还原脱砷球团工艺研究[J]. 矿冶工程, 2014, 34(4): 79-81. DOI: 10.3969/j.issn.0253-6099.2014.04.019 |
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| 作者姓名： | 李二平 邱亚群 向仁军 成应向 |
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| 作者单位： | 湖南省环境保护科学研究院 水污染控制技术湖南省重点实验室, 湖南 长沙 410004 |
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| 基金项目： | 国家水体污染控制与治理科技重大专项(2010ZX07212-008) |
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| 摘 要： | 高炉炉料要求所用球团矿砷含量低于0.08%, 郴州三十六湾河道尾砂制酸硫酸渣砷含量为2.08%。本文在分析砷及含砷矿物的理化性质和研究矿物学特征的基础上, 采用球团预氧化-弱还原工艺, 开展铁精矿中砷的脱除研究。结果表明, 在还原时间80 min, 还原温度1 150 ℃条件下, 球团矿中砷的含量降低到0.101%, 接近高炉生产要求。
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| 关 键 词： | 脱砷 预氧化 还原工艺 球团 |
| 收稿时间： | 2014-02-26 |
Researches on Arsenic Removal from Iron Concentrate Pellet by Preoxidization-Weak Reduction Process |
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| LI Er-ping,QIU Ya-qun,XIANG Ren-jun,CHENG Ying-xiang. Researches on Arsenic Removal from Iron Concentrate Pellet by Preoxidization-Weak Reduction Process[J]. Mining and Metallurgical Engineering, 2014, 34(4): 79-81. DOI: 10.3969/j.issn.0253-6099.2014.04.019 |
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| Authors: | LI Er-ping QIU Ya-qun XIANG Ren-jun CHENG Ying-xiang |
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| Affiliation: | Hunan Research Academy of Environmental Sciences, Hunan Provincial Key Lab of Water Pollution Control Technology, Changsha 410004, Hunan, China |
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| Abstract: | Pellets, if used as burdens for blast furnace, must be lower than 0.08% in terms of arsenic content. However, the arsenic content is 2.08% in the slag after preparation of sulfuric acid with tailings sand from Sanshiliuwan Riverway in Chenzhou City. Based on analysis of physicochemical properties and mineralogical characteristics of arsenic and arsenic-bearing minerals, arsenic removal from iron concentrate was studied by the preoxidization-weak reduction process. Experimental results showed that controlling the preoxidization at a temperature of 1 150 ℃ for 80 min leads to the arsenic content in pellet reduced to 0.101%, which almost meet requirement for blast furnace. |
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| Keywords: | arsenic removal preoxidization reduction process pellet |
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