Carbothermal recovery of zinc from brass ash

Ö Kahvecioǧlu*, B. Derin, O. Yücel

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

17 Citations (Scopus)


Brass ash of composition (wt-%) 59-67Zn-9-22Cu-1.45Pb-2-61SiO 2-0-36Cl was treated by carbothermal reduction in a temperature controlled tube furnace. The aim of the work was to collect zinc in the form of metal and/or zinc oxide in the gaseous phase. Treatment temperature (950-1200°C) and time (15-180 min) were varied. At 1200°C and 60 min, recovery of zinc was 92.5% and zinc content in the remaining residue was found to be 12.8 wt-%. Kinetic analysis of the experimental results showed that initially the reaction was under chemical control with an activation energy of 90.1 kJ mol-1. Subsequently the development of a sintering structure caused the reaction mechanism to change to diffusion control.

Original languageEnglish
Pages (from-to)95-101
Number of pages7
JournalTransactions of the Institutions of Mining and Metallurgy, Section C: Mineral Processing and Extractive Metallurgy
Issue number2 AUGUST
Publication statusPublished - Aug 2003


  • Brass ash
  • Carbothermal reduction
  • Pyrometallurgy
  • Zinc recovery


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