Recovering germanium from coal ash by chlorination with ammonium chloride

Guocai Zhu, Wen Zhong Shi, Jun Tian

Research output: Journal article publicationJournal articleAcademic researchpeer-review

1 Citation (Scopus)


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 languageEnglish
Pages (from-to)278-281
Number of pages4
JournalRare Metals
Issue number4
Publication statusPublished - 1 Dec 2002
Externally publishedYes


  • Chlorination
  • Coal ash
  • Germanium
  • Lignite
  • Recovery

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Physical and Theoretical Chemistry
  • Metals and Alloys
  • Materials Chemistry


Dive into the research topics of 'Recovering germanium from coal ash by chlorination with ammonium chloride'. Together they form a unique fingerprint.

Cite this