云南某氧化铜金矿选矿试验研究

云南某氧化铜金矿原矿铜品位1.26%、金品位4.40g/t、银品位14.20g/t,氧化程度高且金矿物多充填于孔雀石的裂隙中,二者嵌布复杂紧密,具有一定的选别难度。根据其矿石性质,以混合浮选的工艺进行了系统的选矿试验研究,最终以BQ1+25#黑药为捕收起泡剂,以硫化钠+硫酸铵为调整剂,采用“一粗二精二扫”的混合浮选流程,获得了铜品位18.37%、金品位78.15g/t、银品位234.40g/t的铜金银混合精矿,取得了较好的选别效果。

提高某氧化铜金矿金属回收率的研究

某铜金矿石原矿铜品位0.72%,铜氧化率31.94%,含金3.45 g/t,矿石中含泥量较大,属于难选矿石。针对矿石性质特点,研究了各种氧化铜矿捕收剂以及金银增效剂对浮选的影响,取得了铜品位23.21%,回收率89.91%,铜精矿含金108.04 g/t、含银750.68 g/t,金银回收率分别为87.37%,92.99%的好指标。

中亚某难选含铜金矿选冶试验研究

采用“浮选—浮选精矿销售—浮选尾矿直接炭浆法氰化浸出”工艺综合回收中亚某矿山过渡带难选含铜金矿中的金和铜。矿石含金3.52g/t、银11.20g/t、铜0.54%、砷0.40%、硫1.54%,其中氧化铜含量为0.22%,占总铜含量的40.74%,金、铜嵌布粒度微细,嵌布关系复杂,属于复杂难选含氧化铜金矿。针对矿石特点,通过引进氧化铜矿石的捕收药剂体系,增加精选级数,按照便于现场技改的硫化铜、氧化铜混合浮选工艺进行金铜浮选回收,对铜浮选尾矿进行直接炭浆法氰化浸出回收金,最终可获得产率3.92%,含金48.50g/t、含铜8.45%的浮选精矿,可直接销售;浮选尾矿含铜0.21%,可氰化铜含量为0.12%,将其直接炭浸消耗氰化钠3.1kg/t,金浸出率达到74.71%;浮选+浸出金综合回收率为88.26%,铜回收率为62.16%。与现场“浮选—浮选精矿销售—浮选尾矿氨氰法抑铜浸金—氨氰尾浆炭浸”工艺相比,浮选精矿产率接近,精矿金铜品位更优,金综合回收率提高了6.02个百分点,铜回收率提高了9.24个百分点。研究结果可作为现场技改依据。

Iron-Oxide Cu-Au Mineralizing Systems： Eastern Yakutia Perspective

The GIS （geographic information system） used for predicting the associated with upper-intrusive zone of hydrothermal alteration IOCG （iron-oxide copper gold） mineralizing systems is shown by example of the northeast of Russian. IOCG ore deposits can have enormous geological resources with significant reserves of base, precious and strategic metals, are economically attractive targets for mineral exploration worldwide, but are still unknown in the northeast Russian. It was localized in Tarinskiy ore node （eastern Yakutia） field of brecciated altered rocks with sulfide and iron-oxide cement is a first in eastern Yakutia nature anomaly of IOCG-type with iron-oxide Cu-Au ± U specialization, that was formed close to the surface of Rep-Yuruinskiy pluton. It should be of interest as a new precious metals world class deposit type in northeast of Russia.