Hydrometallurgical Recovery of Zinc from Blast Furnace Sludge

Research output: ThesisMaster's Thesis

39 Downloads (Pure)


In light of the increasing need for recycling secondary sources of metals, one of the most pressing challenges is the extraction of zinc from blast furnace sludge (BFS). The sludge cannot be reintroduced into the blast furnace as it negatively affects the smelting process. Various methods of sludge processing were explored to reduce environmental impact regenerating components and recover valuable metals from the sludge. Thorough analyses of the sludge's mineralogical and chemical composition were conducted to determine the optimal method and leaching reagents for zinc recovery. The research demonstrated the effectiveness of hydrochloric acid leaching in achieving a high zinc recovery rate. The developed closed-loop circuit not only focuses on zinc recovery but also facilitates the recovery of the reagents used in the process. Implementing this circuit contributes to the development of a sustainable recycling system for blast furnace sludge, promoting efficient zinc recovery and reducing waste generation. The findings have implications for the iron and steel industry, fostering a more environmentally friendly and economically viable approach to waste management, resource recovery, and reagent utilization.
Translated title of the contributionHydrometallurgische Gewinnung von Zink aus Hochofenschlamm
Original languageEnglish
Awarding Institution
  • Montanuniversität
  • Tost, Michael, Supervisor (internal)
  • Boduen, Anna, Supervisor (external), External person
Award date20 Oct 2023
Publication statusPublished - 2023

Bibliographical note

no embargo


  • blast furnace sludge
  • recycling
  • zinc recovery
  • hydrochloric acid leaching
  • hydrometallurgical process
  • blast furnace
  • iron and steel industry
  • industrial waste
  • waste management
  • waste treatment

Cite this