火湿法联合工艺处理锗蒸馏残渣

Treatment of Ge residue by pyrometallrugy & hydrometallurgy

先将锗残渣经多膛炉焙烧 ,然后酸洗 ,单宁沉锗 ,烟化炉处理洗涤渣 ,最后用湿法从烟气中回收锗 .锗的挥发率及湿法直收率分别为 90 2 3%,73 85 %.实践证明 ,该工艺是从锗残渣中回收锗的一条有效途径 .

After roasted in the multi-hearth, Ge residue was followed by acid washing and precipitating germanium with tannin, then the washed residue was treated in fume-off furnace and germanium was recovered from fume gas by hydrometallurgy at last. The volatilization rate and the germanium direct recovery on hydrometallurgy were 90.23% and 73.85%, respectively. Results show that the process is a effective way to recover germanium from Ge residue.