某花岗岩型钽铌矿选矿研究

Study on the beneficiation of granite type tantalum niobium ore

对一矿床为大型花岗岩的钽铌矿进行了选矿试验研究,以回收其中的有用矿物钽铌铁矿、铌钽铁矿和细晶石.矿石经两段磨矿、两段选别,粗选采用单一重选法得粗精矿,精选采用重-浮-重工艺流程,得到品位为6.89%的钽铌精矿,其回收率为57.482%.精矿经水冶除钨、锡、硅等杂质后得到钽铌渣,其中Ta2O5的含量为29.0%,对原矿的回收率为53.487%.

In order to recycle the valuable minerals ,such as tantalum niobite ,columbite-tantalite and mi-crolite ,beneficiation test is carried out for the tantalum-niobium ore , the ore deposit of w hich is large granite .The tantalum niobium concentrate with 6 .89% grade and 57 .482% recovery is achieved after the mineral has been treated by two-stage grinding and two-stage separation ,rough concentrate is obtained by single gravity separation during the roughing , the scheme gravity-flotation-gravity is used in cleaning . Tantalum niobium slag with 29 .0% Ta2 O5 and 53 .487% recovery for raw ore is received after the impuri-ties such as tungsten ,tin ,silicon are removed by hydrometallurgy .