Abstract
A new process of enriching germanium from coal ash was developed. The process involves in mixing the coal ash and ammonium chloride and roasting the mixture to produce germanium chloride that is then absorbed by dilute hydrochloric acid and hydrolyzed to germanium oxide. The germanium recovery reaches to 80.2% at the optimum condition: mass ratio of NH4Cl/coal ash is 0.15, roasting temperature is 400°C and roasting time is 90 min.
| Original language | English |
|---|---|
| Pages (from-to) | 278-281 |
| Number of pages | 4 |
| Journal | Rare Metals |
| Volume | 21 |
| Issue number | 4 |
| Publication status | Published - 1 Dec 2002 |
| Externally published | Yes |
Keywords
- Chlorination
- Coal ash
- Germanium
- Lignite
- Recovery
ASJC Scopus subject areas
- Condensed Matter Physics
- Physical and Theoretical Chemistry
- Metals and Alloys
- Materials Chemistry