Thermodynamic modeling of zinc recovery from ferrous metallurgy sludge

Ferrous metallurgy enterprises continuously fill dumps with steelmaking and blast furnace sludge high zinc content. Sludge occupying significant territories of is not involved in production harms the environment. Since leads to formation deposits furnace, manufacturers cannot involve this sinter processing. In addition, working can lead problems such as decrease iron content sinter, productivity sintering machines, increase fluctuations chemical composition. At same time, zinc-containing become a valuable secondary product. Zinc remains scarce metal, which encourages development technologies for processing materials. Extraction from difficult because it oxide, but sulfate or sulfide forms. paper, possibilities extraction using FactSage software package are evaluated. The authors present results thermodynamic calculations possibility four types two Russian ferrous metallurgical plants – EVRAZ NTMK MECHEL. data phase analyses considered, well simulated graphs dependencies them. were built on basis received package. Addition reducing agent varied, temperature process. abandoning carbon was To save agent, an optimal mixture company’s selected, coke consumption be minimized.