过硫酸盐氧化碱浸低品位铜精矿提取钼

以过硫酸钠为氧化剂, 在碳酸钠溶液中从低品位铜精矿中提取钼。运用单因素实验法, 探讨了搅拌速度、过硫酸钠和碳酸钠初始浓度、浸出时间、温度和液固比等因素对氧化碱浸提取钼的影响。结果表明,铜精矿氧化碱浸提取钼的优化条件为: 搅拌速度500 r/min, 浸出温度50 ℃, 碳酸钠初始浓度2.5 mol/L, 过硫酸钠初始浓度0.7 mol/L, 液固比10 mL/g, 浸出时间4.0 h, 在此条件下钼浸出率达97.10%。

Extraction of Molybdenum from Low-Grade Copper Concentrate by Persulfate Oxidation and Alkali Leaching

With sodium persulfate as an oxidant, molybdenum was extracted from a low-grade copper concentrate in sodium carbonate solution. The effects of stirring speed, initial concentration of sodium persulfate and sodium carbonate, leaching time and temperature, as well as liquid-solid ratio on molybdenum extraction rate by oxidative alkaline leaching were investigated by performing single factor experiment. Results show that the leaching rate of molybdenum can reach 97.10%, after molybdenum is extracted from copper concentrate by using oxidative alkaline leaching at 50 ℃ for 4 h, with stirring speed at 500 r/min, initial concentration of sodium carbonate and sodium persulfate at 2.5 mol/L and 0.7 mol/L respectively, liquid-solid ratio at 10 mL/g.