湖南是我国有色金属重要产地之一,不仅品种比较多,而且产量也大,约占全国总产量的14％。铜、铅、锌产量又占全省有色金属产量的75～85％。近几年,在铅锌原矿品位逐年下降,铜、铅氧化率和难选矿石比例逐年升高的情况下,通过缩小碎矿最终粒度,合理开展磨矿,改进工艺流程,提高综合回收水平和推广新浮选药剂以及改善药剂 Hunan is one of the important producing areas of non-ferrous metals in our country. Not only the varieties are relatively large, but the output is also large, accounting for about 14% of the total output of the country. Copper, lead, zinc production also accounted for the province's non-ferrous metal output of 75 to 85%. In recent years, the lead and zinc ore grade declining year by year, copper and lead oxidation rate and the proportion of refractory ore increased year by year, by reducing the final size of crushing, grinding and grinding to improve and improve the process and improve the level of comprehensive recovery and Promote new flotation reagents and improve pharmaceuticals