机械活化法强化锂辉石矿相重构过程研究
收稿日期: 2022-10-12
网络出版日期: 2023-01-17
基金资助
国家自然科学联合基金重点项目(U20A20142)
Study on enhancement of spodumene phase reconstruction process by mechanical activation
Received date: 2022-10-12
Online published: 2023-01-17
近年来，随着新能源产业规模的持续扩大，全球消费市场对锂产品的需求迫切度也日益增加。锂辉石作为优质的提锂原料，其最新的提取加工技术一直受到重点关注。采用澳大利亚马里恩矿区的锂辉石矿，通过机械活化法强化其在碱性水热体系中的浸出过程，并分析其浸出行为。结果表明，当锂辉石粒度小于75 μm、氢氧化钠质量分数为25%、碱矿质量比为1.5∶1、反应温度为523.15 K、反应时间为8 h、反应釜转速为100 r/min时，锂提取率可达90.18%。Avrami-Erofeev动力学经验模型能够较好地描述采用机械活化法强化锂辉石浸出的过程，其反应表观活化能为41.739 kJ/mol。
祝悦 , 裘晟波 , 刘程琳 , 于建国 . 机械活化法强化锂辉石矿相重构过程研究[J]. 无机盐工业, 2023 , 55(1) : 81 -86 . DOI: 10.19964/j.issn.1006-4990.2022-0607
In recent years，with the continuous expansion of the new energy industry，the demand for lithium products in the global consumer market has become increasingly urgent.As a high-quality raw material for lithium extraction，spodumene's latest extraction and processing technology has always been the focus of attention.Spodumene ore from Marion mining area in Australia was used to enhance its leaching process in alkaline hydrothermal system through mechanical activation，and its leaching behavior was analyzed.The results showed that the lithium extraction efficiency reached 90.18% when the particle size of spodumene was less than 75 μm at the NaOH concentration of 25%，the alkali-ore ratio of 1.5∶1，the reaction temperature of 523.15 K，the reaction time of 8 h，and the rotational speed of the reactor of 100 r/min.Avrami-Erofeev kinetic empirical model could better describe the process of enhancing spodumene leaching by mechanical activation，and its apparent activation energy was 41.739 kJ/mol.
Key words： spodumene; low-temperature leaching; mechanical activation; kinetics
| 1 | 田千秋, 陈白珍, 陈亚, 等. 锂辉石硫酸焙烧及浸出工艺研究[J].稀有金属, 2011, 35（1）：118-123. |
| 1 | TIAN Qianqiu, CHEN Baizhen, CHEN Ya, et al. Roasting and leaching behavior of spodumene in sulphuric acid process[J].Chinese Journal of Rare Metals, 2011, 35（1）：118-123. |
| 2 | BARBOSA L I, GONZáLEZ J A, RUIZ M D C. Extraction of lithium from β-spodumene using chlorination roasting with calcium chloride[J].Thermochimica Acta, 2015, 605：63-67. |
| 3 | 陈亚, 廖婷, 陈白珍, 等. 纯碱压煮法从锂辉石中提取锂的研究[J].有色金属：冶炼部分, 2011（9）：21-23, 32. |
| 3 | CHEN Ya, LIAO Ting, CHEN Baizhen, et al. Extraction of lithium from spodumene by sodium carbonate autoclave process[J].Nonferrous Metals：Extractive Metallurgy, 2011（9）：21-23, 32. |
| 4 | 唐平. 四川某锂辉石矿工艺矿物学及其提锂工艺研究[D].成都：成都理工大学, 2016. |
| 4 | TANG Ping. Process mineralogy and lithium extraction technology study on spodumene ore in Sichuan province[D].Chengdu：Chen- |
| 4 | gdu University of Technology，2016. |
| 5 | RESENTERA A C, ESQUIVEL M R, RODRIGUEZ M H. Low-temperature lithium extraction from α-spodumene with NH4HF2：Modeling and optimization by least squares and artificial neural networks[J].Chemical Engineering Research and Design, 2021, 167：73-83. |
| 6 | KUANG Ge, CHEN Zhibin, GUO Hui, et al. Lithium extraction mechanism from α-spodumene by fluorine chemical method[J].Advanced Materials Research, 2012, 524-527：2011-2016. |
| 7 | SONG Yunfeng, ZHAO Tianyu, HE Lihua, et al. A promising approach for directly extracting lithium from α-spodumene by alkaline digestion and precipitation as phosphate[J].Hydrometallurgy, 2019, 189.Doi：10.1016/j.hydromet.2019.105141. |
| 8 | XING Peng, WANG Chengyan, ZENG Lei, et al. Lithium extraction and hydroxysodalite zeolite synthesis by hydrothermal conversion of α-spodumene[J].ACS Sustainable Chemistry & Engineering, 2019, 7（10）：9498-9505. |
| 9 | QIU Shengbo, LIU Chenglin, YU Jianguo. Conversion from α-spodumene to intermediate product Li2SiO3 by hydrothermal alkaline treatment in the lithium extraction process[J].Minerals Engineering, 2022, 183.Doi：10.1016/j.mineng.2022.107599. |
| 10 | QIU Shengbo, ZHU Yue, JIANG Youfa, et al. Kinetics and mechanism of lithium extraction from α-spodumene in potassium hydroxide solution[J].Industrial & Engineering Chemistry Research, 2022, 61（41）：15103-15113. |
| 11 | BERGER A, BOLDYREV V, MENZHERES L. Mechanical activation of β-spodumene[J].Materials Chemistry and Physics, 1990, 25（4）：339-350. |
| 12 | VIECELI N, NOGUEIRA C A, PEREIRA M F C, et al. Effects of mechanical activation on lithium extraction from a lepidolite ore concentrate[J].Minerals Engineering, 2017, 102：1-14. |
| 13 | 李洪桂, 刘茂盛, 戴朝嘉, 等. 钨矿物原料碱分解的新工艺研究[J].稀有金属与硬质合金, 1987, 15（S1）：3-9. |
| 14 | 刘茂盛, 孙培梅, 李运姣, 等. 碱法热球磨分解高钙黑钨精矿[J].稀有金属, 1993, 17（2）：85-88. |
| 15 | 李运姣, 李洪桂, 刘茂盛, 等. 平果铝土矿机械活化溶出的研究[J].中南矿冶学院学报, 1994, 25（1）：49-54. |
| 15 | LI Yunjiao, LI Honggui, LIU Maosheng, et al. Study on the mechanically activated leaching of Pingguo bauxite[J].J.Cent.So- |
| 15 | Inst uth. Min.Metall., 1994, 25（1）：49-54. |
| 16 | 吕国志, 张廷安, 柯贤耀, 等. 三水铝石矿机械活化性能及其动力学[J].东北大学学报：自然科学版, 2016, 37（4）：512- 516. |
| 16 | Guozhi LYU, ZHANG Tingan, KE Xianyao, et al. Influence of mechanical activation on digestion performance of hydrargillite[J].Journal of Northeastern University：Natural Science, 2016, 37（4）：512-516. |
| 17 | 张有新, 何利华, 刘旭恒. 机械活化对磁黄铁矿浸出动力学的影响[J].中南大学学报：自然科学版, 2010, 41（6）：2085-2090. |
| 17 | ZHANG Youxin, HE Lihua, LIU Xuheng. Effect of mechanical activation on leaching kinetics of pyrrhotite[J].Journal of Central South University：Science and Technology, 2010, 41（6）：2085-2090. |
| 18 | WANG Xiaohui, JIA Yujuan, MA Shuhua, et al. Effect of mechanical activation on the leaching kinetics of niobium-bearing mineralisation in KOH hydrothermal system[J].Hydrometal Lur- gy, 2018, 181：123-129. |
| 19 | 张燕娟, 黎铉海, 潘柳萍, 等. 机械活化对铟铁酸锌溶解动力学及物化性质的影响[J].中国有色金属学报, 2012, 22（1）：315-323. |
| 19 | ZHANG Yanjuan, LI Xuanhai, PAN Liuping, et al. Influences of mechanical activation on dissolution kinetics and physicochemical properties of indium-bearing zinc ferrite[J].The Chinese Journal of Nonferrous Metals, 2012, 22（1）：315-323. |
| 20 | AVRAMI M. Granulation，phase change，and microstructure kinetics of phase change.Ⅲ[J].The Journal of Chemical Physics, 1941, 9（2）：177-184. |
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