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.