铜录山难选氧化铜铁矿石伴生金的赋存状态及其综合利用

为了最大限度地利用铜录山的矿产资源，本研究详细查定了铜录山高含泥低品位难选铜铁氧化矿石中伴生金的赋存状态，揭示了在深度氧化的情况下金在载体矿物中的嵌布特点、粒度特征、赋存规律等。研究结果表明，该矿石的金主要以可回收的含银自然金的银金矿形式产出，大多数金粒被包裹于孔雀石晶粒内部或成群分布在土状赤铁矿、褐铁矿及玉髓中，金粒具有嵌布粒度细微，但易解离的特点。该工艺矿物学研究结果为在选铜流程综合回收金指明了方向。

THE OCCURRENCE AND COMPREHENSIVE UTILIZATION OF GOLD ASSOCIATED WITH REFRACTORY COPPER-IRON OXIDE ORES IN TONGLUSHAN MINE

In order to utilize as far as possible the mineral resources of Tonglushan Mine,An investigation on occurrence of gold associated with the refractory copper-iron oxide ores with lower grade amd higher clay content,was performed.Occurred character,grain size distribution feature and occurred rules of gold in host minerals in the ores oxidized deeply were determined.The results show that the gold in this ores originated from natural gold containing silver and most of gold grains in the ores were enclosed in malachite or distributed in earthy hematite,limonite and chalcedong.These gold grains are characterized by very small size and easy liberation.The results obtained in this research point out direction of recovering gold in concentrating copper process.