The oxidized ore mined from a gold deposit contained 8.1g/t Au,82.5g/t Ag and 0.94%Cu. The gold is mainly occurred as native gold,electrum,the silver is mainly occurred as orgentojarosite,horn-silver,and the copper is mainly occurred as cuprite,tenorite,azurite in the ore. The oxidizing rate of the ore is higher,the mouse-eaten and crevasse are developed,and the permeability of the ore is satisfactory. Therefore,the ore is suitable leaching treatment. However,owing to the content of clay is relatively high,and the oxidized copper minerals are soluble in cyanide solution and resulted in production of Cu(CN)2-3 ion that is an important factor influencing recovery of gold and silver. Thus,a technological flowsheet of desliming-wet pretreatment-cyanide leaching of gold and silver was recommended,so as to realize comprehensive recovery of gold,silver and copper from this kind of ore.%某金矿床氧化矿石含金8.1g/t,含银82.5g/t,含铜0.94%.金主要以自然金、银金矿形式存在,银主要以银铁矾,角银矿形式存在,铜主要以赤铜矿、黑铜矿、蓝铜矿形式存在.矿石氧化率高,孔洞、裂隙发育,渗透性良好,适宜湿法浸出.由于粘土矿物含量高,氧化铜矿物易溶于氰化物溶液,并产生影响金、银回收的Cu(CN)2-3离子,因此推荐采用脱泥→湿法预处理→氰化浸出金、银的工艺流程,综合回收矿石中金、银、铜.
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