Optimization of dissolution of metals from Waelz sintering waste (WSW) by hydrochloric acid solutions

Beşe A. V., Çopur M., Çolak S., Ata O. N.

CHEMICAL ENGINEERING JOURNAL, cilt.162, sa.2, ss.718-722, 2010 (SCI-Expanded, Scopus) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 162 Sayı: 2
  • Basım Tarihi: 2010
  • Doi Numarası: 10.1016/j.cej.2010.06.035
  • Dergi Adı: CHEMICAL ENGINEERING JOURNAL
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.718-722
  • Anahtar Kelimeler: Waelz process, Optimization, Taguchi method, Leaching, Zinc waste, OPTIMUM CONDITIONS, ZINC, RECOVERY, LEAD, EXTRACTION, RESIDUES, DESIGN, RAMAN
  • Atatürk Üniversitesi Adresli: Evet

Özet

In this study Taguchi method was applied to determine the optimum conditions of dissolution of metals in Waelz sintering waste (WSW) in HCl solutions. The effects of solid-to-liquid ratio, reaction temperature, stirring speed, acid concentration, and reaction time on extraction efficiency were investigated. The optimum conditions were determined as follows: solid-to-liquid ratio, 0.1; reaction temperature, 65 degrees C; stirring speed, 700 rpm; acid concentration, 3 M and the reaction time, 48 min. Under these conditions, extraction efficiencies of zinc, cadmium and lead from waste were 97%, 91% and 0.052%, respectively. (C) 2010 Elsevier B.V. All rights reserved.