Abstract:
Scandium is a kind of scattered element, which is highly dispersed in the lithosphere, the demand for scandium products is large now. Scandium and its alloy have shown superior comprehensive performance, they are widely used in aerospace and other industries. Based on CiteSpace software and bibliometric method, this paper conducts visual analysis on papers in CNKI and Web of Science database. The results show that: firstly, from 2010 to 2022, many researchers have been keeping on investigating scandium for decades. Especially in the past five years, the popularity of scandium has continued to increase, and the number of the papers has increased. Secondly, “scandium alloy”“red mud” and so on keywords appear frequently in the study of keyword co-occurrence. Thirdly, the heat of research (scandium secondary recovery, scandium extraction and scandium alloy development) continued to increase. In addition, this paper studies the methods of scandium recovery from primary ore (rare earth ore, etc.), industrial waste slag (red mud, etc.) and industrial waste liquid (hydrochloric acid waste liquid, etc.), focusing on the study of scandium extraction from V-Ti magnetite tailings and titanium dioxide wastewater. “Roasting-Leaching-Extraction” is a process involved in most scandium extraction processes. Through gravity separation and magnetic separation, raw materials could be pre-enriched. Ion exchange method and precipitation method can improve the purity of scandium products. In the future, it is necessary to further optimize the process and develop more efficient scandium extraction technology. In the future, the method of collaborative scandium recovery from a variety of scandium resources can be valued, optimizing the process flow and developing efficient scandium extraction technology.