摘要
为实现钨铼合金废料的快速、高效溶解,采用NaOH碱性体系下电化学溶解W-25Re合金边角料。结果表明:当槽电压2.5 V、NaOH浓度100 g/L、电解温度30~40℃、电溶10 h时,电解溶液含W和Re浓度分别达到46.4和15.4 g/L,此时W和Re的溶出率分别为99.78%和99.35%,阳极电流效率达到98.80%,电溶能耗为2.29 kWh/kg。电溶后阳极经SEM表征,其表面呈现丘陵形貌,EDS分析表明,电溶前后阳极的W/Re质量百分比基本不变,W溶出速率约为Re的3倍。
In order to realize rapid and efficient dissolution of W-Re alloy scrap,W-25Re alloy scrap was electrochemical dissolved in NaOH alkaline system.The results show that concentration of W and Re in electrolytic solution is 46.4 g/L and 15.4 g/L respectively and dissolution rate of W and Re is 99.78%and 99.35%respectively under the conditions including cell voltage of 2.5 V,NaOH concentration of 100 g/L,electrolysis temperature of 30-40℃,and electrolysis time of 10 h.Anode current efficiency is 98.80%,and energy consumption is 2.29 kWh/kg.After electrolysis,anode’s surface is hilltype characterized by SEM.EDS analysis shows that W/Re mass percentage of anode is almost the same before and after electrolysis,and W dissolution rate is about three times of Re.
作者
陈昆昆
操齐高
张卜升
孟晗琪
戎万
赵盘巢
CHEN Kun-kun;CAO Qi-gao;ZHANG Bo-sheng;MENG Han-qi;RONG Wan;ZHAO Pan-chao(Northwest Institute for Non ferrous Metal Research.Xi'an 710016,China)
出处
《有色金属（冶炼部分）》
CAS
北大核心
2020年第9期54-58,共5页
Nonferrous Metals（Extractive Metallurgy)
基金
国家重点研发计划项目(2018YFC1901704)。
关键词
铼
钨铼合金
含铼废料
电化学溶解
rhenium
W-Re alloy
rhenium-bearing scrap
electrochemical dissolution
