Gas of Molten Salt Electrolysis and Its Impact on Electrodeoxidation

作者：Li Zequan^*; Dan Linyang; Li Xuemin; Liu Nan; Bai Chenguang; Hu Meilong

来源：Rare Metal Materials and Engineering, 2017, 46(12): 3767-3772.

• molten salt electrolysis
• gas component
• argon flow

Ion chromatography and flame atomic absorption were used to analyze condensates collected at various temperatures and slag. The results show that the main components of slag are FeCl2/FeCl3, NiCl2, CrCl2/CrCl3 and CaCl2; the condensates are made up of CaCl2, HCl, HClO, H2O and metal chlorides. The gas in reactor includes Cl-2, HCl, HClO, H2O, Ar and metal chlorides. The 1.0 L/min argon flow in reactor at 850 degrees C was simulated, indicating that it is very difficult to vent the HCl, HClO, et al, so these gases react with reactor wall to produce metal chlorides, which leads to serious corrosion. At the same time, HCl and HClO could influence electrodeoxidation. Based on simulation and tail gas absorption experiment, argon flow increases to 5.0 L/min in 2 h of pre-electrolysis, which can effectively vent the HCl HClO, et al. This improvement could enhance the electrolysis velocity and resolve the corrosion problem.

• 出版日期2017-12
• 单位重庆大学