西藏某低品位氧化铜矿含铜1.14％,其中氧化铜占其总铜量的92.7％,氧化率较高,选矿处理难度较大,矿区中含铜矿物除了微量的黄铜矿外,全部为氧化带的表生矿物组合,其可选含铜矿物主要为孔雀石和赤铜矿.根据该矿石特点进行了硫化浮选法和脂肪酸浮选法试验对比,得出硫化浮选法更适宜该矿选别.原矿经过一段粗选两段扫选两段精选硫化浮选流程,获得铜精矿品位25.35％,铜回收率73.91％,选别指标较好.但该矿地处高原腹地,环境温度低、空气含氧量低,现场实施应考虑适量充氧和对矿浆加温以保证浮选效果.%A low-grade copper oxide ore in Tibet contains 1.14％ of copper,among which the copper oxide accounts for 92.7％.The high oxidation rate makes it difficult for mineral processing.In the mining area,only a little chalcopyrite is contained and the others are all the surface minerals of the oxidation zone,among which malachite and ruby copper are minerals containing copper.According to the properties of this ore,through the contrast test it was obtained that the sulphidizing flotation process is more suitable than that of the fatty acid.Through one roughing two scavenging two cleaning,the copper concentrate with the grade of 25.35％ and the recovery of 73.91％ was obtained.The index is satisfactory.But the mine is located in the hinterland,whose temperature is low and whose air is with low oxygen.Therefore,to ensure the flotation efficiency the amount of oxygen and the slurry heating should be condideres.
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