中国有色金属学报(英文版)
Transactions of Nonferrous Metals Society of China
| Vol. 26 No. 6 June 2016 |
（1. National Engineering Laboratory for Hydrometallurgical Cleaner Production Technology,
Key Laboratory of Green Process and Engineering, Institute of Process Engineering,
Chinese Academy of Sciences, Beijing 100190, China;
2. College of Environmental Science and Engineering, Liaoning Technical University, Fuxin 123000, China）
Abstract:To lower the cost of bauxite electrolysis desulfurization using NaOH solution as the supporting electrolyte, effects of electrolyte recycling on bauxite electrolysis desulfurization were investigated. The results indicate that electrode corrosion, cell voltage, the desulfurization rate and the pH value of the electrolyte have no obvious changes with the increase of cycle times. Additionally, there were some transitive valence S-containing ions in electrolyte after the electrolysis, such as , . However, most of the sulfur in bauxite was eventually oxidized into into the electrolyte, and these S-containing ions did not affect the recycling utilization for electrolyte.
Key words: high sulfur bauxite; electrolysis; desulfurization; electrolyte; recycling
