Cite this article as:

Quankuang Zhang, Baozhong Ma, Chengyan Wang, Yongqiang Chen, and Wenjuan Zhang, Comprehensive utilization of complex rubidium ore resources: Mineral dissociation and selective leaching of rubidium and potassium, Int. J. Miner. Metall. Mater., 30(2023), No. 5, pp.857-867. https://dx.doi.org/10.1007/s12613-022-2436-1
Quankuang Zhang, Baozhong Ma, Chengyan Wang, Yongqiang Chen, and Wenjuan Zhang, Comprehensive utilization of complex rubidium ore resources: Mineral dissociation and selective leaching of rubidium and potassium, Int. J. Miner. Metall. Mater., 30(2023), No. 5, pp.857-867. https://dx.doi.org/10.1007/s12613-022-2436-1
引用本文 PDF XML SpringerLink

综合利用复杂铷矿资源:矿相解离和选择性浸出铷、钾

摘要: 铷是重要的稀有金属和战略性新兴产业金属。现阶段对矿石中铷的提取多采用酸法,酸法工艺未考虑矿石中宏量元素钾、铝、硅的资源化利用,导致资源的综合利用程度较低,且存在设备易腐蚀,废渣、氯化氢废气、高盐废水产出量大、难处理的问题,这也与国家提倡的“绿色冶金”宗旨相悖。因此,开发清洁高效的矿石提铷技术迫在眉睫。目前,由于铷在高科技领域的应用越来越广泛,从矿石中提取铷的技术受到了极大的关注。本文提出了一种综合利用铷矿资源的新工艺。该工艺主要包括矿物解离、选择性浸出和脱硅。结果表明,热活化完全破坏了铷矿稳定的硅氧四面体结构,矿物完全解离,这有利于后续的选择性浸出。在最佳的实验条件下,铷矿中铷和钾的浸出率分别达到98.67%和96.23%。此外,浸出过程中加入一定量的活化Al(OH)3可有效抑制硅的浸出。同时,浸出残渣为方钠石,通过水热转化成功合成A沸石。该工艺为铷的绿色提取和各种复杂矿物资源的可持续利用提供了新的思路。

 

Comprehensive utilization of complex rubidium ore resources: Mineral dissociation and selective leaching of rubidium and potassium

Abstract: Currently, the process of extracting rubidium from ores has attracted a great deal of attention due to the increasing application of rubidium in high-technology field. A novel process for the comprehensive utilization of rubidium ore resources is proposed in this paper. The process consists mainly of mineral dissociation, selective leaching, and desilication. The results showed that the stable silicon–oxygen tetrahedral structure of the rubidium ore was completely disrupted by thermal activation and the mineral was completely dissociated, which was conducive to subsequent selective leaching. Under the optimal conditions, extractions of 98.67% Rb and 96.23% K were obtained by leaching the rubidium ore. Moreover, the addition of a certain amount of activated Al(OH)3 during leaching can effectively inhibit the leaching of silicon. In the meantime, the leach residue was sodalite, which was successfully synthesized to zeolite A by hydrothermal conversion. The proposed process provided a feasible strategy for the green extraction of rubidium and the sustainable utilization of various resources.

 

/

返回文章
返回