不锈钢酸洗废液中金属的综合利用  

Comprehensive Utilization of the Metals in Waste Stainless Steel Pickling Liquor

作　　者：谢明森[1] 高远飞[2] 张晓丽[2] 

机构地区：[1]四川大学化学工程学院,四川成都610207 [2]南阳师范学院化学与制药工程学院,河南南阳473061

出　　处：《广州化工》2015年第9期109-111,共3页GuangZhou Chemical Industry

摘　　要：为了综合利用不锈钢酸洗废液中的金属,采用分步沉淀的方法分离不锈钢酸洗废液中的铁、铬、镍。根据它们沉淀所需要的pH值不同,以及氢氧化铁、氢氧化铬、氢氧化镍的酸碱性不同等因素,设计了合理的分离工艺。研究了pH值等因素对金属离子分离效果的影响。结果表明,选择合适的pH值和辅助添加剂可以很好地分离不锈钢酸洗废液中的不同金属离子。In order to utilizate the metals in waste stainless steel pickling liquor comprehensively. The method of fractional precipitation was used. On the basis of the different pH value that fractional precipitation required, and the different acidity of ferric hydroxide, chromium hydroxide and nickel hydroxide, reasonable separation process was designed. The influences of pH for separation efficiency of different metal ions were studied. The results showed that the metals in waste stainless steel pickling liquor could be separated well if the pH and the addition were selected correctly.

关 键 词：不锈钢 酸洗废液 分步沉淀 综合利用 

分 类 号：X757[环境科学与工程—环境工程]