| 锂云母精矿的硫酸熟化研究 |
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| 引用本文： | 张秀峰,伊跃军,张利珍,谭秀民,李春,王威. 锂云母精矿的硫酸熟化研究[J]. 矿产保护与利用, 2018, 0(4): 59-62. DOI: 10.13779/j.cnki.issn1001-0076.2018.03.032 |
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| 作者姓名： | 张秀峰 伊跃军 张利珍 谭秀民 李春 王威 |
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| 作者单位： | 1.中国地质科学院郑州矿产综合利用研究所，河南 郑州 450006 |
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| 基金项目： | 国家自然科学基金项目51504225 |
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| 摘 要： | 硫酸熟化过程是硫酸法处理锂云母精矿的关键，关系到锂、铷、铯的综合利用。采用L16(45)正交试验研究了锂云母精矿的硫酸熟化过程。结果表明，影响锂云母硫酸熟化的因素主次顺序是:酸矿比>硫酸浓度>熟化时间>熟化温度>给料粒度。硫酸熟化的最优条件为:酸矿比1 GA6FA 1、硫酸质量浓度80%、熟化时间4 h、熟化温度150℃、给料粒度74 μm以下占80%，在此条件下锂、铷、铯的浸出率分别为97.58%、96.73%和97.39%，有助于锂云母中锂、铷、铯的综合回收。
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| 关 键 词： | 锂云母 硫酸熟化 浸出 正交试验 铷 铯 |
| 收稿时间： | 2018-01-18 |
Study on Sulfuric Acid Curing of Lepidolite Concentrate |
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| Affiliation: | 1.Zhengzhou Institute of Multipurpose Utilization of Mineral Resources, CAGS, Zhengzhou 450006, China2.China National Engineering Research Center for Utilization of Industrial Minerals, Zhengzhou 450006, China3.College of Chemical Engineering, Sichuan University, Chengdu 610065, China |
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| Abstract: | The sulfuric acid curing process of the sulfuric acid method treating lepidolite concentrate, which is the key factor on comprehensive utilization of lithium, rubidium and cesium, was investigated by using L16(45) orthogonal experimental design. The results showed that the importance of the factors affecting the sulfuric acid curing of lepidolite was:acid-solid ratio > sulfuric acid concentration > curing duration > curing temperature > particle size. The optimum curing parameters were determined as follows:acid-solid ratio of 1 GA6FA 1, sulfuric acid concentration of 80%, curing duration of 4 hours, curing temperature of 150℃, particle size of 80% below 74 μm. Under the optimal conditions, the leaching efficiencies of lithium, rubidium and cesium were 97.58%, 96.73% and 97.39%, respectively. The study can provide reference for sulfuric acid method of treating the lepidolite ore, which lays the foundation for the comprehensive utilization of lithium, rubidium and cesium in the lepidolite ore. |
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