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广东大雅硫铁矿,建有一个年处理原矿石4万吨的铜铅硫矿石选矿厂。自一九七八年投产以来,由于加强生产技术管理,重视试验研究,不断改进工艺流程,改混合浮选为铜优先浮选,推广使用丁基铵黑药,应用重铬酸盐法分离铜铅,以选铜为主,综合回收铅硫的浮重联合工艺获得成功。其结果使生产指标不断提高,选矿成本大幅度下降,每吨原矿加工费用由10.92元,降为6.53元,降低40.2％,经济效果显著。目前,铜精矿品位和选矿回收率分别由投产时的10.5％、78％提高到21.6％和89.9％。伴生银在铜精矿
Guangdong Daya pyrite, built an annual processing of 40,000 tons of raw ore copper lead sulfur ore beneficiation plant. Since its commencement of production in 1978, due to the strengthening of production technology management, emphasis on experimental research, continuous improvement of process flow, changing of mixed flotation to preferential flotation of copper, promotion of the use of butyl ammonium blacks, separation of copper by dichromate method Lead, copper-based election, a comprehensive recovery of lead and sulfur floating weight combination process to be successful. As a result, the production index was continuously raised and the cost of dressing dropped drastically. The processing cost per ton of ore dropped from 10.92 yuan to 6.53 yuan, a decrease of 40.2%. The economic effect was remarkable. At present, the grade of copper concentrate and the recovery rate of mineral processing are respectively increased from 10.5% and 78% at the time of production to 21.6% and 89.9% respectively. Associated silver in copper concentrate