摘要
工业铝电解产生的废阴极主要由石墨化碳和电解质构成,废阴极中的石墨化碳可通过浮选工艺进行综合回收。本文在以柴油为捕收剂、松醇油为起泡剂的浮选体系中,对去离子水浸洗前后废阴极中石墨化碳的可浮性做了对比研究。同时研究了pH值、Na^+、K^+、Ca^(2+)、Al^(3+)等金属离子对废阴极中石墨化碳可浮性的影响。试验结果表明,溶解于浮选矿浆中的电解质氟化钠所释放出的金属离子Na^+是影响废阴极中石墨化碳可浮性的主要因素。浮选体系中的金属离子对废阴极中石墨化碳可浮性影响较大,金属离子价数越高、离子浓度越大废阴极中石墨化碳可浮性越好。矿浆pH值对废阴极中石墨化碳可浮性影响不大。
The spent cathode produced by industrial aluminum electrolysis mainly consists of graphitized carbon and electrolyte, The graphitized carbon in the spent cathode can be recycled by flotation process. In the flotation system of diesel oil as the collector and pine camphor oil as the frother, the floatability of spent cathode carbon before and after the deionized water cleaning was studied. And the influence of pH, Na ＋ , K ＋ , Ca2＋ , Al3 ＋on floatability of graphitized carbon in spent cathode carbon was studied. The results indicate that the concentration of metal ions in the flotation system has great influence on the floatation of the graphitized carbon in spent cathode carbon, the type of metal ions and the pH value of the slurry have little influence on the floatability of the graphitized carbon in waste cathode carbon.
作者
王金玲
申士富
WANG Jinling;SHEN Shifu(Beijing General Research Institute of Mining ＆ Metallurgy State Key Laboratory of Mineral Processing of China, Beijing 102628, China)
出处
《有色金属（选矿部分）》
北大核心
2017年第6期28-30,共3页
Nonferrous Metals（Mineral Processing Section）
基金
国家自然科学基金资助(51541401)
关键词
电解铝废阴极
浮选
可浮性
electrolytic aluminum spent cathode
flotation separation
floatability
