Hydrometallurgical Evaluation of Zinc Leach Plant Residue

GÜLER E., SEYRANKAYA A., Cocen I.

ASIAN JOURNAL OF CHEMISTRY, cilt.23, sa.7, ss.2879-2888, 2011 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 23 Sayı: 7
  • Basım Tarihi: 2011
  • Dergi Adı: ASIAN JOURNAL OF CHEMISTRY
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.2879-2888
  • Anahtar Kelimeler: Zinc, Roasting, Leaching, Leach residue, Lead, Hydrometallurgy, THERMAL-DECOMPOSITION, METAL VALUES, RECOVERY, EXTRACTION, CONCENTRATE, KINETICS, SULFATES, NICKEL
  • Dokuz Eylül Üniversitesi Adresli: Evet

Özet

Continuous decrease of zinc metal production worldwide, which is among primary resources have resulted in zinc metal production from secondary resources. In this study effect of sulfating roasting conditions on metal solubility and extraction conditions of zinc was investigated. It is possible to produce the soluble metal salts and decompose the ferritic structure by roasting of leach residue containing 20.28 % Pb, 12.73 % Zn and 8.43 % Fe. About 90 % Zn was recovered after sulfating roasting followed by water leaching. The secondary leach residue was exposed to NaCl complex solution so that Pb dissolved and was obtained in the form of PbCl2. At the optimal conditions, lead and silver efficiency was determined as 92 and 62.4 %, respectively. This study aims beneficiation of Cinkur plant leach residue, recovery of zinc, lead and silver and thereby extermination of potential environmental risks. Hydrometallurgical methods were adopted due to their less energy requirement and more eco-friendly nature. Besides, a plant flow chart was developed in the light of results of the selected methods.