摘要
以低品位氧化铜矿为原料,采用浸出、萃取、反萃、结晶和精制工艺制备电镀级硫酸铜。重点考察了萃取剂浓度、相比(O/A)、萃取时间和水相中硫酸浓度等因素对铜萃取率的影响。结果表明,采用硫酸浸出氧化铜,铜浸出率可达65%。浸出液用萃取剂ACORGA M5640萃取铜,当萃取剂浓度为20%,相比为1/3,萃取时间为120 s,水相中硫酸浓度为1.5 g/L,稀释剂为煤油时,铜萃取率可达90%以上。负载有机相经反萃,反萃液经结晶和精制后,可得到纯度为99.35%的电镀级硫酸铜。
Plating grade copper sulfate is prepared from low-grade copper oxide ores by leaching,extraction,back extraction,crystallization and purification process.The effects of extractant concentration,O/A ratio,extraction time and sulfate acid concentration on extraction rate are investigated.The results show that the leaching rate of copper is up to 65% after the low-grade copper oxide mineral is leached by sulfate acid.The extraction rate is up to 90% after copper is extracted by M5640 when extractant concentration is 20%,O/A ratio is 1/3,extraction time is 120 s,sulfate acid concentration is 1.5 g/L,diluent is kerosene.The purity of plating grade copper sulfate is 93.35% after the loaded organic phase is treated by back extraction,crystallization and purification process of strip liquor.
出处
《矿冶》
CAS
2011年第2期72-75,共4页
Mining And Metallurgy
关键词
氧化铜矿
萃取
硫酸铜
oxide copper ores
extraction
copper sulfate
