Zinc enters the gas phase and is oxidised in the gas stream to ZnO, which is collected on bag filters. This process produces slag in quantities of 600–800 kg/Mg of EAF dust, equivalent to over 2 million tons of “Waelz slag” in annual world production.

This ILZSG report looks at a number of aspects of the recovery of zinc from Electric Arc Furnace (EAF) dust. EAF dust is a significant source of secondary zinc.

Feb 10, 2018 · The main component in EAF dust is usually Fe, but Zn and other metals volatile at steelmaking conditions can also be found in the dust at elevated concentrations. Zn is found in EAF dusts at higher concentrations because of its wide-spread use …

Sep 9, 2024 · EAF dust, once a costly and hazardous by-product, is now a crucial resource in zinc recovery. As industries increasingly adopt this innovative technology, they not only benefit economically but also contribute to a more sustainable and environmentally responsible future.

Jul 15, 2010 · Part I presents the EAFD characterization and its leaching process by diluted sulphuric acid, whereas Part II deals with the purification of the leach liquor and the recovery of zinc by solvent extraction/electrowinning.

Apr 1, 2017 · Electric-arc furnace dust (EAFD) is one of the several process residues generated in mini mills during steel production. The presence of valuable zinc in EAF dust and the rising costs for waste disposal are the motivating factors for EAFD …

Aug 30, 2024 · Electric arc furnace (EAF) dust is an important secondary resource containing metals, such as zinc (Zn) and iron (Fe). Recovering Zn from EAF dust can contribute to resource recycling and reduce environmental impacts.

2 days ago · Electric arc furnace dust (EAFD) is a zinc-containing solid waste generated during steelmaking, and advanced recycling strategies are needed to facilitate the recovery of valuable zinc. This study investigated the microwave-assisted carbothermic reduction in EAFD using coke as a reductant, with a focus on temperature (900–1100 °C), holding time (0–60 min), and the C/Zn molar ratio (3–5).

High zinc containing wastes are known to be stored across the UK with no economically feasible method of recovery. Zn recovery is the economic driver for EAF dust recycling, and the environmental drivers relate to Fe recycling and the impact of local stockpiling.

Engitec developed the EZINEX®, a hydrometallurgical process based on an NH4Cl electrolyte and capable of producing metallic zinc directly from zinc oxide bearing materials. 2019 by the Association for Iron & Steel Technology.