刘金瑞, 李慧, 梁精龙, 王乐. 赤泥中提取有价金属元素的研究进展[J]. 矿产综合利用, 2022, 43(3): 107-112. DOI: 10.3969/j.issn.1000-6532.2022.03.019
    引用本文: 刘金瑞, 李慧, 梁精龙, 王乐. 赤泥中提取有价金属元素的研究进展[J]. 矿产综合利用, 2022, 43(3): 107-112. DOI: 10.3969/j.issn.1000-6532.2022.03.019
    Liu Jinrui, Li Hui, Liang Jinglong, Wang Le. Progress on Extraction of Valuable Metals Elements from Red Mud[J]. Multipurpose Utilization of Mineral Resources, 2022, 43(3): 107-112. DOI: 10.3969/j.issn.1000-6532.2022.03.019
    Citation: Liu Jinrui, Li Hui, Liang Jinglong, Wang Le. Progress on Extraction of Valuable Metals Elements from Red Mud[J]. Multipurpose Utilization of Mineral Resources, 2022, 43(3): 107-112. DOI: 10.3969/j.issn.1000-6532.2022.03.019

    赤泥中提取有价金属元素的研究进展

    Progress on Extraction of Valuable Metals Elements from Red Mud

    • 摘要: 作为氧化铝生产过程中产生的强碱性废弃物,赤泥在我国具有年产量高,堆存量大,利用率低的现状,对资源环境威胁巨大。提取赤泥中大量含有的有价金属元素,对实现赤泥的资源化利用具有重大意义。本文简要叙述了赤泥的性质及组成。概述了赤泥中Fe的直接磁选法、还原-磁选法和湿法分离提取工艺;赤泥中Al的还原烧结法、钙化-碳酸化法、酸浸法和亚熔盐法提取工艺;赤泥中Ti的火法和湿法提取工艺;以及赤泥中Sc的火法-湿法联合法和湿法提取工艺,分析了各工艺的特点及存在的问题。认为目前实现工业化回收赤泥中有价金属的挑战在于赤泥组成成分复杂,导致有价金属回收的技术难度和处理成本较高;以及缺乏对多种元素系统性回收的工艺研究。提出开发更高效回收有价金属的技术,加强系统性提取赤泥中多种有价金属的相关研究,是未来实现赤泥资源化利用的关键。

       

      Abstract: As a kind of alkaline waste produced in the alumina production process, red mud has a high annual output, large stockpiles, and low utilization rate in this country, which poses a huge threat to the resources and environment. Extracting a large amount of valuable metal elements contained in red mud is of great significance for realizing the resource utilization of red mud. This article briefly describes the nature and composition of red mud. Research status and existing problems of extraction of valuable metal elements from red mud such as the direct magnetic separation, reduction-magnetic separation and wet processes of Fe, the reduction sintering method, calcification-carbonation method, acid leaching method and sub-molten salt extraction process of Al, fire and wet extraction process of Ti; and the combined fire-wet and wet extraction process of Sc were reviewed. TIt is believed that the current challenge for industrialized recovery of valuable metals in red mud lies in the complex composition of red mud, which leads to the technical difficulty and processing cost of valuable metal recovery, and the lack of process research on the systematic recovery of multiple elements. It is proposed that the development of more efficient technologies for the recovery of valuable metals and the strengthening of relevant research on the systematic extraction of multiple valuable metals from red mud are the keys to the realization of red mud resource utilization in the future.

       

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