摘要
本文提出了一种合理地处理合金钢ＨＮＯ＿３－ＨＦ酸洗废液的工艺方案。废液经ＴＢＰ多级萃取回收ＨＮＯ＿３－ＨＦ─黄钠铁矾除铁铬─中和沉镍─钙盐除氟处理后，回收了部分ＨＮＯ＿３－ＨＦ及９６％左右的镍，外排液无色透明，达国家排放标准。
A reasonable process for treating spent HNO_3-HF Iiguors from alloy steelpickling is described in this paper,In this process the spent liquor undergoes a multi-stageTBP extraction for recovering HNO_3-HF─removing Fe and Cr using sodium jarosite method─nickel precipitation─fluorine removing by calcium salts,resulting in a colourless,tran;─parent effluent which comes up to national standard,as well as recovering part of HNO_3-HFand about 96%nickel。
出处
《矿冶工程》
CAS
CSCD
北大核心
1995年第3期45-48,共4页
Mining and Metallurgical Engineering
关键词
合金钢
酸洗
废液
萃取
硝酸-氢氟酸
Alloy steel, HNO_3-HF,Spent pickling liquor,Solvent extraction
