硫酸钠熔炼法处理废硬质合金工艺中钴的回收  

Co Recovery from Co Slag Arising from Scrap Hard Metal Smelting with Na_2SO_4

作　　者：姜文伟[1] 高晋[1] 普崇恩[1] 谢盛德[1] 

机构地区：[1]株洲硬质合金厂,湖南株洲412000

出　　处：《稀有金属与硬质合金》2000年第2期22-25,共4页Rare Metals and Cemented Carbides

摘　　要：对硫酸钠熔炼法处理废硬质合金得到的钴渣 ,用X射线仪 (XRD)进行相分析 ,证实了现行硫化钠熔炼工艺中 ,钴以Co9S8形态存在 ;根据相图分析了Co9S8的成因 ;提出了用氧化焙烧法处理Co9S8的工艺。试验结果表明 :用氧化焙烧法处理钴渣 ,钴的浸出率可达 99%以上。The Co slag obtained from scrap hard metal smelting with Na 2SO 4 was analysed by XRD. Results show that the Co in the slag is in the form of Co 9S 8. Analysis of Co 9S 8 by phase diagram shows its formation mechanism, and oxiding roasting method for the Co slag treatment was put forward. Results show that after oxiding roasting of the Co slag,the leaching rate of Co is more than 99%.

关 键 词：废硬质合金 硫酸钠熔炼 氧化焙烧 回收 钴 

分 类 号：TF816.052[冶金工程—有色金属冶金]