CAJ | 학술논문

研究了以沸腾焙烧-酸浸-氰化浸出工艺从高铜金精矿中综合回收铜、金等有价元素。试验确定的最佳条件为：1）高铜金精矿沸腾焙烧预处理温度为650℃，焙烧时间为2 h ；2）焙砂用硫酸浸出铜，硫酸质量浓度为50g/L，浸出时间为2h，浸出温度为80℃，液固体积质量比为4∶1～5∶1，浸出后渣铜品位降至0．286％；3）硫酸浸出渣与静态焙烧渣用氰化钠浸出金，金浸出率为96．5％，银浸出率为63．5％。该工艺对高铜金精矿中Au、Ag、Cu的综合回收率较高。
연구료이비등배소-산침-청화침출공예종고동금정광중종합회수동、금등유개원소。시험학정적최가조건위：1）고동금정광비등배소예처리온도위650℃，배소시간위2 h ；2）배사용류산침출동，류산질량농도위50g/L，침출시간위2h，침출온도위80℃，액고체적질량비위4∶1～5∶1，침출후사동품위강지0．286％；3）류산침출사여정태배소사용청화납침출금，금침출솔위96．5％，은침출솔위63．5％。해공예대고동금정광중Au、Ag、Cu적종합회수솔교고。
Recovery of valuable metals from refractory high-grade copper-contained gold concentrate was researched by the process of sulfating roasting-acid leaching-cyanidation leaching .The optimum conditions are that 1)Roasting temperature is 650 ℃ ,roasting time is 2 hours .2)Leaching of copper is over 98 .5% under the conditions of initial sulfuric acid concentration of 50 g/L ,leaching temperature of 80 ℃ ,leaching time of 2h ,liquid-solid ratio of 4∶1 -5∶1 ,the copper mass fraction in the acid leaching residue is lower 0 .35% .3)The cyanidation leaching of gold and silver are 96 .5% and 63 .5% , respectively .The process can be used for extracting valuable metals from refractory high-grade copper-contained gold concentrate .