| 硝酸法生产磷酸过程中稀土的浸出研究 |
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| 引用本文： | 汪胜东,蒋开喜,蒋训雄,冯林永,范艳青,蒋伟,张登高.硝酸法生产磷酸过程中稀土的浸出研究[J].有色金属(冶炼部分),2011(8):25-27. |
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| 作者姓名： | 汪胜东 蒋开喜 蒋训雄 冯林永 范艳青 蒋伟 张登高 |
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| 作者单位： | 1. 东北大学,沈阳,110819;北京矿冶研究总院,北京,100070
2. 北京矿冶研究总院,北京,100070 |
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| 基金项目： | 国家科技支撑计划项目（2007BAB08B03） |
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| 摘 要： | 研究了采用硝酸法生产磷酸工艺中稀土的浸出情况。详细探讨了温度、硝酸浓度、时间、粒度、液固比等因素对磷精矿中稀土浸出率的影响。结果表明,浸出稀土的适宜工艺条件是:40%HNO3、60℃、液固比2.5、搅拌转速300 r/min、-0.038 mm占82%、浸出90 min。此条件下稀土浸出率与磷矿分解率均大于98%。
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| 关 键 词： | 磷矿 稀土 浸出 硝酸法 |
| 收稿时间： | 2009/3/11 0:00:00 |
Study on Leaching of Rare Earth in Preparing Phosphoric Acid with Nitric Acid |
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| WANG Sheng-dong,JIANG Kai-xi,JIANG Xun-xiong,FENG Lin-yong,FAN Yan-qing,JIANG Wei and ZHANG Deng-gao.Study on Leaching of Rare Earth in Preparing Phosphoric Acid with Nitric Acid[J].Nonferrous Metals(Extractive Metallurgy),2011(8):25-27. |
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| Authors: | WANG Sheng-dong JIANG Kai-xi JIANG Xun-xiong FENG Lin-yong FAN Yan-qing JIANG Wei and ZHANG Deng-gao |
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| Affiliation: | Northeastern University;Beijing General Research Institute of Mining and Metallurgy;Beijing General Research Institute of Mining and Metallurgy;Beijing General Research Institute of Mining and Metallurgy;Beijing General Research Institute of Mining and Metallurgy;Beijing General Research Institute of Mining and Metallurgy;Beijing General Research Institute of Mining and Metallurgy |
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| Abstract: | The leaching of rare earth(RE) in phosphate rock with nitric acid was studied.The effects of temperature,nitric acid concentration,time,particle size,and liquid-to-solid ratio on RE leaching rate were studied.The optimum conditions for RE leaching were 40% HNO3,60 ℃,liquid-to-solid ratio 2.5,agitation speed 300 r/min,-0.038 mm accounting for 82%,leaching time 90 min.Under the above conditions,the percentage of RE leaching rate and decomposition percentage of phosphate rock were both higher than 98%. |
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| Keywords: | Phosphate Rare earth Leaching Nitrate method |
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