微波加热常压挥发富集低品位褐煤锗精矿中锗的工艺研究  

Study on gathering germanium in low grade germanium concentrate with atmospheric evaporation and microwave heating

作　　者：普世坤[1,2] 兰尧中[1,3] 吴王昌 谢高 杨再磊 

机构地区：[1]上海大学材料科学与工程学院,上海200072 [2]云南临沧鑫圆锗业股份有限公司,云南临沧677000 [3]云南大学,云南昆明650091

出　　处：《中国有色冶金》2016年第1期78-82,共5页China Nonferrous Metallurgy

基　　金：国家自然科学基金(U1037603);云南省创新人才项目(2010C1086)

摘　　要：提出了微波加热常压挥发富集褐煤锗精矿中锗的方法,试验考察了挥发温度、挥发时间、料层厚度、精矿粒度对锗挥发率的影响,得出低品位褐煤锗精矿挥发富集锗的最佳工艺条件：挥发温度1 200℃、挥发时间150 min、料层厚度10 mm、精矿粒度-200目超过97.36%,在此条件下锗的挥发率为62.78%~74.50%,挥发产物锗含量在8.02%~28.46%,富集比达到17.0~21.7倍。This paper presented a method which can gather germanium from low grade germanium concentrate with atmospheric evaporation and microwave heating. The influence of 4 factors including volatilization temperature and time, material thickness and concentrate particle size on germanium volatilization was tested. As a result, the opti- mum condition was： the volatilization temperature is 1 200 ~C , time is 150 minutes, the thickness is 10 mm and the concentrate particle size is more than 97.36% pass - 200 mesh. On this condition, the germanium volatilization rate reached 62.78% - 74.5% , the content of germanium in the volatile products was 8.02% ~ 28.46% and the enrichment ratio reached more than 17 times.

关 键 词：低品位锗精矿 微波加热 常压挥发 锗 回收 

分 类 号：TN304.11[电子电信—物理电子学]