| 铷矿熔融水淬渣的碱浸动力学 |
| |
| 引用本文： | 张全矿,马保中,王成彦,陈永强.铷矿熔融水淬渣的碱浸动力学[J].有色金属科学与工程,2021,12(4):1-8. |
| |
| 作者姓名： | 张全矿 马保中 王成彦 陈永强 |
| |
| 作者单位： | 1.北京科技大学冶金与生态工程学院, 北京 100083 |
| |
| 基金项目： | 国家自然科学基金重点项目U1802253中央高校基本科研业务费项目FRF-MP-20-04 |
| |
| 摘 要： | 随着近年来铷及其化合物在新兴领域的开发应用，铷的市场规模迅速扩大。目前人们对铷矿的处理多采用酸法、碱法以及酸碱联合法，但是以上方法多存在酸碱耗过大，浸出效率和资源利用率低等问题。针对现有工艺存在的弊端，提出熔融水淬-碱浸综合处理复杂铷矿的新工艺。通过熔融水淬，铷矿中稳定的硅氧四面体结构被破坏，水淬渣以高活性的状态存在。为了考察水淬渣的浸出活性，采用收缩核模型研究了浸出温度和水淬渣粒度对铷浸出效果的影响。结果表明:相较于传统碱法对铷矿的处理工艺，熔融水淬-碱浸法可以在低温和低碱浓度下实现铷的高效浸出，碱浸反应的表观活化能为37.41 kJ/mol。水淬渣的碱浸过程符合混合控制模型，并且所得浸出渣为方沸石。
|
| 关 键 词： | 铷 水淬渣 碱浸 动力学 混合控制 |
| 收稿时间： | 2021-03-31 |
On the alkali leaching kinetics of rubidium ore quenching slag in molten water |
| |
| ZHANG Quankuang,MA Baozhong,WANG Chengyan,CHEN Yongqiang.On the alkali leaching kinetics of rubidium ore quenching slag in molten water[J].Nonferrous Metals Science and Engineering,2021,12(4):1-8. |
| |
| Authors: | ZHANG Quankuang MA Baozhong WANG Chengyan CHEN Yongqiang |
| |
| Affiliation: | 1.School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing 100083, China2.Beijing Key Laboratory of Green Recycling and Extraction of Metals, Beijing 100083, China3.Faculty of Materials Metallurgy and Chemistry, Jiangxi University of Science and Technology, Ganzhou 341000, Jiangxi, China |
| |
| Abstract: | With the development and application of rubidium and its compounds in emerging fields in recent years, the market for rubidium has found an ever-increasing expansion. At present, rubidium ores are treated by acid method, alkali method and acid-base combination method. However, most of these technologies have disadvantages of large acid-alkali consumption, low leaching efficiency and inefficient resource utilization. To solve these defects of the existing technology, we propose a new technology for the treatment of rubidium ores, molten water quenching plus alkali immersion. Through molten water quenching, the stable silicon-oxygen tetrahedral structure in rubidium ore is destroyed. Thus, water quenching slag exists in a highly active state. For the target of clarifying the leaching activity of water-quenched slag, the shrinkage core model was used to study the influence of leaching temperature and water-quenched slag particle size on the leaching effect of rubidium. The results show: compared to the traditional alkali treatment of rubidium ores, melt water quenching-alkali leaching method achieves high efficient leaching of rubidium at low temperatures and low alk ali concentrations. The apparent activation energy of the alkali leaching reaction is 37.41 kJ/mol. The alkali leaching process of water quenched slag accords with the mixed control model, and the leached slag is analcime. |
| |
| Keywords: | |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
| 点击此处可从《有色金属科学与工程》浏览原始摘要信息 |
|
点击此处可从《有色金属科学与工程》下载全文 |
|
