摘要
采用微波氧化辅助Na_2S-NaOH浸出体系对铜冶炼烟灰(简称烟灰)进行研究,在微波时间180s、微波档位7档(560 W)和氧气流量10L/min的条件下,砷、铜、锌、铅的浸出率分别为98.45%、3.64%、3.88%、0.41%,实现了砷的选择性分离。XPS、XRD、SEM和重金属形态分析结果表明,微波氧化有利于砷的选择性分离。
Copper smelting dust （referred to as ＂soot＂） was investigated through Nae S-NaOH leaching process assisted with microwave and oxidation. The results show that leaching rate of As, Cu, Zn, and Pb is 98.45%, 3.64%, 3.88%, and 0.41% respectively under the optimum conditions including microwave time of 180 s, microwave gear of 7 （560 W）, and oxygen flux of 10 L/min. Arsenic is selectively separated from soot. Na2 S-NaOH leaching assisted with microwave and oxidation is an efficient way to remove arsenic from soot based on XPS, XRD, SEM, and speciation analysis of heavy metals.
出处
《有色金属（冶炼部分）》
CAS
北大核心
2017年第5期5-10,共6页
Nonferrous Metals（Extractive Metallurgy)
基金
湖北省科技支撑项目(2014BEC029)
关键词
铜冶炼烟灰
微波
选择性
分离
砷
氧化
浸出
copper smelting dust
microwave
selectivity
separation
arsenic
oxidation
leaching
