历年来,弋阳铜矿的铜精矿中附产银的产值约占总产值的23％,高于全矿的利税总额。提高伴生银的回收率是提高经济效益的重要环节。从1983年起,我矿适当降低铜精矿品位以提高伴生银的回收率,取得显著效果。 我们在生产实践中发现,当铜品位在15～20％之间波动时,银的品位基本不变。 Over the years, Yiyang copper concentrate copper concentrate output value of about 23% of GDP, higher than the total profits and taxes of the entire mine. Improving the recovery of associated silver is an important part of improving economic efficiency. From 1983 onwards, I benefited from the appropriate reduction of the grade of copper concentrates to improve the recovery rate of associated silver and achieved remarkable results. We found in production practice, when the grade of copper fluctuates between 15 ~ 20%, the grade of silver is basically unchanged.