电场强化和过氧化氢两步碱浸提回收分离钒和铬
Recovery and Separation of Vanadium and Chromium by Two-Step Alkaline Leaching Enhanced with an Electric Field and HO.
作者信息
Peng Hao, Yang Liu, Chen Ya, Guo Jing, Li Bing
机构信息
Chongqing Key Laboratory of Inorganic Special Functional Materials, College of Chemistry and Chemical Engineering, Yangtze Normal University, Fuling, Chongqing 408100, P. R. China.
出版信息
ACS Omega. 2020 Mar 5;5(10):5340-5345. doi: 10.1021/acsomega.9b04346. eCollection 2020 Mar 17.
This paper focused on the treatment of vanadium-chromium reducing residue with a two-step alkaline leaching process: electro-oxidation leaching of vanadium and HO as well as oxidation leaching of chromium in an alkaline medium. The effects of experimental parameters on the leaching performance of vanadium and chromium were investigated. The experimental data showed that in the first alkaline leaching in stage I, the leaching efficiency of vanadium reached up to 95.32% under optimal conditions, while most of the chromium could not leach out (about 4% of chromium was leached out). Chromium was easily oxidized to high valence (CrO ) with HO in the second alkaline leaching stage II. Under optimal conditions, 96.24% chromium was leached out.
本文重点研究了采用两步碱浸工艺处理钒铬还原渣
在碱性介质中进行钒的电氧化浸出和过氧化氢浸出以及铬的氧化浸出。研究了实验参数对钒和铬浸出性能的影响。实验数据表明，在第一阶段的碱性浸出中，在最佳条件下钒的浸出效率高达95.32%，而大部分铬无法浸出（约4%的铬被浸出）。在第二阶段的碱性浸出中，铬很容易用过氧化氢被氧化成高价态（铬酸根）。在最佳条件下，96.24%的铬被浸出。
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