Chen J.,National Engineering Laboratory for Vacuum Metallurgy |
Chen J.,Key Laboratory of Vacuum Metallurgy for Nonferrous Metal of Yunnan Province |
Chen J.,State Key Laboratory Breeding Base Of Complex Nonferrous Metal Res Clear Utilization In Yunnan Province |
Jiang W.,National Engineering Laboratory for Vacuum Metallurgy |
And 11 more authors.
Zhenkong Kexue yu Jishu Xuebao/Journal of Vacuum Science and Technology | Year: 2013
Here, we addressed the feasibility of separation of lead-copper alloy by vacuum distillation. The separation coefficient and the gas-liquid phase equilibrium were theoretically analyzed. The calculated results show that it is feasible to extract copper from lead-copper alloy by vacuum distillation because of the fairly large difference between the saturated vapor pressure of lead and copper. The lead-copper alloy, with Cu-content ranging from 5% to 20%, was distilled in vacuum. The influence of the distillation temperature and time, depth of melt, and pressure on the separation rate was experimentally evaluated. The results show that the purities of lead and copper were found to be 99.9% and 99.99%, respectively, after a single distillation under the optimized conditions: distilled at 1373 K for 30 min with a melt depth of 6 mm.