摘要
在对铝电解槽废旧阴极进行物相和成分分析的基础上,对其所含的氟化物进行了氟的溶出试验,研究液固比、粒径、温度对氟化物溶出的影响。结果表明,当采用水浸出,粒径0.075~0.096mm,液固比55∶1,浸出温度85℃,浸出时间2h时,原料中可溶F-浸出率达到97.8%。溶解后的固体中剩余可溶氟离子约为45mg/L,可作为非危险废弃物予以排放。
Based on XRD analysis and component analysis, spent pot lining (SPL) of aluminum electrolysis cell was leached to recover fluoride. The effects of ratio of liquid to solid (L/S), particle size and temperature on leaching rate of fluoride were investigated. The results show that leaching rate of soluble F- with water is 97.8% under the optimum conditions including particle size of 0. 075~0. 096 mm, L/S of 55 : 1, temperature of 85 ℃, and leaching duration of 2 h. The content of soluble fluoride in residue is 45 mg/L which can be disposed as non-hazardous waste.
出处
《有色金属(冶炼部分)》
CAS
北大核心
2015年第3期30-32,40,共4页
Nonferrous Metals(Extractive Metallurgy)
基金
国家自然科学基金资助项目(51304152)
陕西省冶金物理化学重点学科重点培育计划项目(ZD04001)
关键词
铝电解槽
废旧阴极
氟化物
浸出
综合利用
aluminum electrolysis cell
spent pot lining
fluoride
leaching
comprehensive utilization