优化浮选条件提高铝电解废旧阴极浮选指标  

Improving spent potlining floatation index by optimizing floatation conditions

作　　者：李楠[1] 谢刚[1,2] 高磊[1] 王祖旭[2] 侯彦青[1] 李荣兴[1] 于站良[2] 

机构地区：[1]昆明理工大学冶金与能源工程学院,云南昆明650093 [2]昆明冶金研究院,云南昆明650031

出　　处：《轻金属》2014年第7期29-32,共4页Light Metals

基　　金：国家自然科学基金(51204084);云南省应用基础研究计划(2011FZ302)

摘　　要：以含碳36.1%的废旧阴极为研究对象,对影响浮选效果的磨矿粒度、矿浆浓度及浮选及转速进行了研究,获得了最佳浮选条件。最佳浮选条件为:磨矿粒度为-200目占90%,矿浆浓度为25%,浮选机转速为1700r/min。通过改善浮选条件,碳精矿品质得到了改善,其碳品位提高了5.40;电解质精矿品质得到了改善,其碳含量降低了0.26,电解质回收率提高了4.58。Recycle of spent poflining （SPL） with 36.1% of carbon by floatation has been tested. Effects of grinding size, pulp density and agitation speed of floatation machine on floatation are examined and optimal conditions are obtained. A comparative experiment is carried out to compare floatation indexes under un - optimized and optimized conditions. And it is found that quality of both carbon product and electrolyte product are improved by optimizing floatation conditions. Specifically, carbon content in carbon product is raised by 5.40 and carbon content in electrolyte product is decreased by 0.26 while electrolyte recovery of electrolyte product is increased by 4.58.

关 键 词：铝电解 废旧阴极 浮选法 废物利用 

分 类 号：TF821[冶金工程—有色金属冶金]