石煤中钒-钼-硒等伴生元素研究

Stone coal is an ancient inferior anthracite and has attracted much attention because it is associated with many rare elements. China is one of the few countries in the world with stone coal resources, and the comprehensive development of stone coal resources has broad prospects. The article comprehensively and systematically summarizes the characteristics, distribution, associated elements, etc. of China's stone coal resources, and focuses on elaborating the content levels, occurrence states and mineral carriers of elements such as vanadium, molybdenum, selenium, arsenic and fluorine in stone coal. The reserves of vanadium in stone coal are rich, the grades of vanadium resources in different regions vary greatly, and the occurrence state of vanadium in stone coal is complex and changeable. The research history of the vanadium extraction process from stone coal is long, but the recovery rate of vanadium is not optimistic. The extraction of molybdenum from stone coal is one of the new ways to comprehensively utilize stone coal. The contents of selenium, arsenic and fluorine in stone coal are generally higher than the average values of Chinese coal. These three are environmentally sensitive elements. The development and utilization of stone coal have already caused serious impacts on the surrounding environment and human health. Strengthening the research on the migration and transformation laws of harmful elements in stone coal is a guarantee for controlling the release of toxic elements during its utilization process. The problems and countermeasures in the research process are analyzed from the perspectives of the development and utilization of rare metal elements and the environmental pollution of toxic and harmful elements, and suggestions are put forward for the green, efficient and comprehensive development and utilization of China's stone coal resources.

石煤是一种古老的劣质无烟煤，因其伴生有多种稀有元素而备受关注。我国是世界上少数拥有石煤资源的国家之一，石煤资源的综合开.发具有广阔前景。文章全面系统的总结了我国石煤资源的特点、分布、伴生元素等情况，重点阐述了石煤中钒、钼、硒、砷、氟等元素的含量水.平、赋存状态和矿物载体。石煤中钒元素储量丰厚，不同地区钒资源品位良莠不齐，钒在石煤中的赋存状态复杂多变。石煤提钒工艺研究历史.久远，但钒的回收率并不乐观，石煤中提钼是综合利用石煤的新途径之一。石煤中硒、砷、氟含量普遍高于中国煤均值，三者为环境敏感元素，.石煤开发利用已经对周围环境和人类健康造成了严重影响，加强石煤中有害元素的迁移转化规律研究是控制其利用过程中释放有毒元素的保.障。从稀有金属元素开发利用和有毒有害元素环境污染角度分析了研究过程中存在的问题和对策，为我国石煤资源的绿色、高效、综合开发利.用提出了建议。