摘要
这是一篇矿物加工工程领域的论文.某稀土矿矿石中伴生萤石和锶钡矿物,由于该样品成分和嵌布关系复杂,矿物嵌布粒度细,且萤石和锶钡矿物浮选性质相近,常规药剂和工艺无法实现样品中伴生萤石和锶钡矿物的富集和分离,影响当地生态环境,造成国家矿产资源的重大浪费.针对该样品,开展浮选药剂优选和工艺优化,形成适于该稀土尾矿资源化利用的混合浮选-分离再提纯选矿工艺.研究结果表明,针对SrO品位为 8%,CaF2 品位为 16%的稀土尾矿,经混合浮选-再分离提纯工艺可以得到品位为 90%的萤石精矿和锶钡混合精矿纯度90%的锶钡精矿,研究结果可以为同类型尾矿资源化利用提供借鉴.
Abstract
This is an article in the field of mineral processing engineering.Tailings in China are rich in strontium-barium-bearing minerals and fluorite minerals.Due to the complex distribution relationship of the minerals,it's very difficult to recover the minerals.In this article,the mixed flotation and separation beneficiation process was developed for the utilization of the tailings.The research results indicate that for the tailings with 8%SrO grade and 16%CaF2 grade,the fluorite concentrate with 91%CaF2 grade and the strontium-barium bearing mineral concentrate with more than 90%mineral purity can be obtained.The research results can provide technical support for tailings resource utilization,reduction and harmlessness in China.
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