A new process of enriching germanium from coal ash was developed. The process involves in mixing the coal ash and ammonium chloride and then roasting the mixture to produce germanium chloride that is then absorbed by dilute hydrochloric acid and hydrolyzed to germanium oxide. The germanium recovery reached to 80.2% at the optimum condition: mass ratio of NH4Cl/coal ash is 0.15, roasting temperature 400℃ and roasting time 90 min.
参考文献
| [1] | Qiu G W .Recovering germanium and zinc from the zinc oxide flue dust containing germanium[J].云南冶金,2000,29(03):17. |
| [2] | Zhang S L .Study on occurrence mode of germanium in lignite in Yunnan Bangmai Basin[J].Deposit Transaction(in Chinese),1988,6(03):29. |
| [3] | Li Y S;Li P;Liu G H .A review on the recovery of germanium from coal ash at home and abroad[J].Jiangsu Chemical Industry(in Chinese),2000,28(12):23. |
| [4] | 李样生,刘蓓,李璠,周耐根,刘光华.二酰异羟肟酸萃取法从粉煤灰中提取锗[J].现代化工,2000(08):34-36,39. |
| [5] | Zhu G C;Tian J;Chi R;Xu S M .Extraction of rare earth with NH4Cl roasting from bastnasiterough ore[J].Transactions of Nonferrous Metals Society of China,2000,10(05):701. |
| [6] | Zhu G C;Chi R A .A recovering method of rare earth carbonate by roasting bastnasite concentrate with NH4Cl[P].CN:99106149.7 |
| [7] | Zhu G C;Chi R A;Tian J et al.Recovery of rare earth with NH4Cl roasting from bastnasite[J].有色金属,2000,52(01):66. |
| [8] | Zhu G C;Tian J;Chi R A;XuSM .The green chemistry progress on extraction of rare earth from bastnasite[J].化学进展,2000(12):6. |
| [9] | Zhou N Z.Metallurgy of Rare Metals[M].北京:冶金工业出版社,1988:86-107,278-331. |
| [10] | Qu D J;Ying W J.Handbook of Rare Metals (in Chinese)[M].北京:冶金工业出版社,1995:786-846. |
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