某含砷铜精矿铜砷分离选矿试验研究

Experimental Research on Separation of Copper and Arsenic from a Copper Concentrate Containing Arsenic

使用来自某含铜精矿的复合样品,可以通过控制电位浮选法选择性地将黄铁矿与黄铜矿(CuFeS_(2))和褐铁矿(Cu_(5)FeS_(4))分离。在将纸浆电势在pH12下降低至约-150mV SHE并从铜矿物中浮选出蓝宝石后,在块状铜-砷精矿上进行了分离。从头级品位为0.11%As和Cu为1.2%的复合样品中,可以生产出含有52%的非球铁矿铜的低砷高铜精矿,含量为2600ppm。计算机模拟表明,对于包含更典型的砷和铜含量(200ppm的砷和1%的铜)的进料,分离效率应足以将含量小于61ppm的铜浓缩到产品中,含量低于2000ppm。

Using a composite sample from a copper-containing concentrate,pyrite can be selectively separated from chalcopyrite(CuFeS_(2))and limonite(Cu_(5)FeS_(4))by controlled potential flotation.After reducing the pulp potential to about-150mV SHE at pH12 and flotation of sapphire from copper minerals,separation was carried out on the bulk copperarsenic concentrate.From a composite sample with a first grade of 0.11%As and 1.2%Cu,a low-arsenic and high-copper concentrate containing 52%of non-nodular iron ore copper can be produced,with a content of 2600 ppm.Computer simulations show that for feeds containing more typical arsenic and copper contents(200 ppm arsenic and 1%copper),the separation efficiency should be sufficient to concentrate copper with a content of less than 61 ppm into the product,with a content of less than 2000 ppm.