| 由氢氧化铬渣制取工业氧化铬产品的工艺 |
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| 引用本文： | 田磊,张廷安,刘燕,吕国志.由氢氧化铬渣制取工业氧化铬产品的工艺[J].东北大学学报(自然科学版),2017,38(1):67-71. |
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| 作者姓名： | 田磊 张廷安 刘燕 吕国志 |
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| 作者单位： | (东北大学 多金属共生矿生态化冶金教育部重点实验室， 辽宁 沈阳 110819) |
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| 基金项目： | 国家自然科学基金资助项目(51504058，51504059)； 国家自然科学基金云南联合重点基金资助项目(U1402271)； 辽宁省教育厅科学技术研究项目(L2014096)； 教育部高等学校博士学科点专项科研基金资助项目(20120042110011)； 中央高校基本科研业务费专项资金资助项目(N140204015，N130702001). |
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| 摘 要： | 针对氢氧化铬渣进行了无害化处理研究,考察了Na OH质量浓度、液固质量比、浸出温度、搅拌速率、浸出时间等条件对铬渣中Al的脱除率的影响.实验结果显示,在温度为100℃、Na OH质量浓度为150 g/L、液固质量比为7∶1、搅拌速率为400 r/min、浸出时间为3.5 h的条件下,铬渣中Al的浸出率可以达到92.69%.碱浸渣水洗脱碱后,在950℃条件下煅烧90 min,最终得到的产品中氧化铬的含量可达到97.23%,经过CIE L*a*b*表色体系测定,由铬渣制取的氧化铬产品偏绿,适用于工业用途.
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| 关 键 词： | 氢氧化铬渣 无害化处理 浸出渣 铝的浸出率 氧化铬的含量 |
Preparation of Chromium Oxide Product from Chromium Residue |
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| TIAN Lei,ZHANG Ting-an,LIU Yan,LYU Guo-zhi.Preparation of Chromium Oxide Product from Chromium Residue[J].Journal of Northeastern University(Natural Science),2017,38(1):67-71. |
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| Authors: | TIAN Lei ZHANG Ting-an LIU Yan LYU Guo-zhi |
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| Institution: | Key Laboratory for Ecological Utilization of Multimetallic Mineral， Ministry of Education， Northeastern University， Shenyang 110819， China. |
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| Abstract: | The harmless treatment of chromium hydroxide residue was studied. The effects of NaOH concentration， liquid to solid mass ratio， leaching temperature， stirring rate and holding time on the leaching rate of aluminum were investigated. The results show that the removal rate of aluminum from chromium residue can reach 92.69% when the temperature was 100℃， the NaOH concentration was 150g/L， the liquid to solid ratio was 7∶1， the stirring rate was 400 r/min and the holding time was 3.5h. After washing with water， the leaching residue was calcined at 950℃ for 90 min to produce chromium hemitrioxide， and its content reached 97.23%. The chromium hemitrioxide is green and suitable for industrial use according to the measurement with CIE L*a*b*colour space. |
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| Keywords: | chromium hydroxide residue harmless treatment leaching residue leaching rate of aluminum chromium oxide content |
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