我国铌矿资源概况及选矿技术进展

Overview of Niobium Resources and Progress in Mineral Processing Technology in China

我国铌矿资源储量丰富,但矿石品位低,且共伴生有多种有价金属,可供经济开采的铌矿资源稀缺,对外依存度超过90%。分析了全球铌资源概况及供需关系,简要阐述了铌的性质、用途、分布特征以及矿床类型,归纳总结了重选工艺、磁选工艺、浮选工艺、焙烧—浸出工艺以及联合工艺等铌矿选矿工艺研究进展,并对其进行了对比分析。最后,展望了选铌工艺的研究方向,并提出了保障我国铌资源稳定供应的对策。

Abundant niobium ore resources are found in China,but they are often characterized by low ore grades and associations with various valuable metals.Economically viable niobium ore resources are considered scarce,and niobium's external dependence in the country exceeds 90%.An analysis of the global niobium resource overview and supply-demand relationships was undertaken.The nature,applications,distribution characteristics,and deposit types of niobium were briefly expounded upon.The progress in niobium ore beneficiation processes,including gravity separation,magnetic separation,flotation,roasting-leaching,and combined processes,was summarized with comparative analysis.Lastly,future research directions in niobium ore processing were outlined,along with strategies for ensuring a stable supply of niobium resources in China.