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投稿时间：2012-10-10 修订日期：2012-10-29 录用日期：2012-10-29 网络发布日期：2013-03-22
投稿时间：2012-10-10 修订日期：2012-10-29 录用日期：2012-10-29 网络发布日期：2013-03-22
中文摘要: 采用复合铵盐作浸出剂浸出风化壳淋积型稀土矿中的稀土。考察浸出剂的配比、浓度、液固比、流速、pH等因素对稀土浸出率的影响。结果表明，NH4Cl、NH4NO3、(NH4)2SO4质量比为4∶5∶6的复合铵盐浸出剂为最佳组合；液固比越大、流速越慢，浸出率越高；当浸出剂浓度为10 g/L、pH=3.5时浸出效果最好。
Abstract:Rare earth (RE) was leached from weathered crust elution-deposited rare earth ore with composite ammonium salts as leaching agent. The effects of ratio of composite ammonium salts and concentration of leaching agent, ratio of liquid to solid (L/S), flow rate and pH value on leaching rate of RE were investigated. The results show that the best mass ratio of leaching agent of NH4Cl, NH4NO3, (NH4)2SO4 is 4∶5∶6. The bigger L/S and lower flow velocity is, the higher leaching rate is. The best leaching effect is achieved when concentration of leaching agent is 10 g/L and pH value is 3.5.
keywords: weathered crust elution-deposited rare earth ore complex leaching agents ammonium salts ratio
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基金项目:国家自然科学基金资助项目（50974098; 51274152）；教育部长江学者和创新团队发展计划项目（IRT0974）
| Author Name | Affiliation | |
| zhangzhenyue | wuhan institute of technology | zzyxmu.edu@gmail.com |
| xu zhi gao | ||
| wu ming | ||
| zhang ting ting | ||
| li qiong | ||
| chi ru an | rac@mail.wit.edu.cn |
引用文本：
张臻悦,徐志高,吴明,张婷婷,李琼,池汝安.复合铵盐浸取风化壳淋积型稀土矿的研究[J].有色金属（冶炼部分）,2013(4):32-35.
zhangzhenyue,xu zhi gao,wu ming,zhang ting ting,li qiong,chi ru an.Study on Leaching of Rare Earth from Weathered Crust Elution Deposited Rare Earth Ore with Complex Ammonium Agents[J].Nonferrous Metals (Extractive Metallurgy),2013(4):32-35.
张臻悦,徐志高,吴明,张婷婷,李琼,池汝安.复合铵盐浸取风化壳淋积型稀土矿的研究[J].有色金属（冶炼部分）,2013(4):32-35.
zhangzhenyue,xu zhi gao,wu ming,zhang ting ting,li qiong,chi ru an.Study on Leaching of Rare Earth from Weathered Crust Elution Deposited Rare Earth Ore with Complex Ammonium Agents[J].Nonferrous Metals (Extractive Metallurgy),2013(4):32-35.
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