摘要
在碱性条件下采用过氧化氢氧化后再用盐酸蒸馏分离的方法从低品位褐煤锗精矿中回收锗。最佳工艺条件为:氢氧化钠用量为锗精矿量的30%、过氧化氢(30%)用量为锗精矿量的25%、氧化预处理时间1.5h、蒸馏盐酸用量为锗精矿量的9倍,在此条件下锗回收率可以提高到97.2%以上,比常规蒸馏方法提高31.5个百分点。
Germanium was recovered from low grade lignite germanium concentrates by oxidation with hydrogen peroxide under alkaline conditions and distillation separation with hydrochloric acid.Germanium recovery is 97.2% above with 31.5percent point higher than that of conventional distillation under the optimum conditions including dosage of sodium hydroxide of 30% of germanium concentrates,dosage of hydrogen peroxide（30%）of 25% of germanium concentrates,oxidation pretreatment duration of 1.5h,and dosage of hydrochloric acid of 9times of germanium concentrates.
出处
《有色金属（冶炼部分）》
CAS
北大核心
2015年第12期38-41,共4页
Nonferrous Metals（Extractive Metallurgy)
基金
国家自然科学基金资助项目(U1037603)
云南省技术创新人才项目(2010CI086)
关键词
锗
碱氧化预处理
蒸馏
回收
germanium
alkali oxidation pretreatment
distillation
recovery
