广东某低品位钽铌铷铍多金属矿石工艺矿物学研究

Process Mineralogy Study of a Low-grade Rare and Polymetallic Ore of Tantalum-niobium-rubidium-beryllium from Guangdong

  • 摘要: 以广东省某低品位钽铌铍铷多金属矿为研究对象,采用先进矿物定量检测技术与传统工艺矿物学研究手段相结合的方法,对矿石进行工艺矿物学研究,以期为多金属矿石综合回收提供指导。结果表明,本矿石属强钠长石化和云英岩化花岗岩型钽铌铍铷矿石,原矿中主要有价金属为钽、铌、铍、铷、镓和银。以钽铌铁矿矿物形式存在的钽和铌分别占总含量的68.51%、62.72%;以绿柱石和硅铍石矿物形式存在的铍分别占原矿总含量的71.01%和20.29%;赋存于云母和长石中的铷分别占总含量的74.94%和20.24%;镓主要富集在黏土矿物中,银主要以螺状硫银矿形式赋存于硫化矿物中。采用重磁浮联合选矿流程,可实现有用元素和尾矿的综合回收。

     

    Abstract: The rare metals, tantalum and niobium, beryllium and rubidium, are commonly associated with each other on earth. They have been recognized as important strategic resources in recent years. In this paper, the occurrence research of niobium-tantalum-beryllium-rubidium on a low-grade and micro-fine disseminated rare metals deposit from Guangdong province was carried out, by combining advanced mineralogical determination technology with traditional process mineralogy methods. In order to provide a clarified guidance to process selection of subsequent mineral separation and comprehensive recovery of the ore. As a result, the ore is classified into tantalum-niobium-beryllium-rubidium granite type ore with strong alteration of albitzation and greisenization. In the ore, the valuable metals include tantalum, niobium, rubidium, beryllium, gallium and silver. Tantalum and niobium in the form of columbite-tantalite account for 68.51% and 62.72%, respectively. The beryllium in the form of beryl and phenacite account for 71.01% and 20.29%, respectively. The rubidium occurred in muscovite and feldspar account for 74.94% and 20.24%, respectively. While gallium in the ore is mainly concentrated in clay minerals, and silver is mainly present in sulfide minerals in the form of acanthite. The comprehensive recovery of valuable metals and tailing can be achieved by using combined process of gravity separation, magnetic separation and flotation.

     

/

返回文章
返回