What is EAF dust?
Electric arc furnace (EAF) dust is a waste generated in the EAF during the steel production process. Among different wastes, EAF dust represents one of the most hazardous, since it contains heavy metals such as Zn, Fe, Cr, Cd and Pb. Steel production is associated with a great volume of waste generation.
What is K061?
K061 wastes are defined in 40 CFR 261.32 as “Emission control dust/sludge from the primary production of steel in electric furnaces.” ——- Concentration-based treatment standards for K061 high zinc nonwastewaters are based on the analysis of nonwastewater slag residues from HTMR processes. (
What is a Waelz kiln?
The Waelz Kiln process is an established, energy-efficient and resilient technology used to treat zinc containing materials and residues. Although Waelz technology has been around for over 80 years, the design and technology surrounding the basic kiln has improved throughout this time.
What does American zinc do?
American Zinc Recycling is a leading environmental services provider to the US steel industry. We recycle wastes from steel production to reclaim valuable commodities such as zinc, nickel and other metals. Our efforts keep millions of tons of waste out of landfills and recycle metals back into productive uses.
What is K061 waste?
EPA is finalizing treatment standards under the land disposal restrictions (LDR) program for a subcategory of the hazardous waste K061 (electric arc furnace dust) treatability group, namely nonwastewaters that contain equal to or greater than 15 percent total zinc (i.e., high zinc subcategory), determined at the point …
Where does EAF dust come from in a steel furnace?
Technical Writer. EAF dust is a by-product of the steel production process, and refers to the dust collected during the melting of steel in an electric arc furnace.
What kind of hazardous waste is EAF dust?
The EAF dust is listed as hazardous waste from specific source, K061, according to ABNT 10004:2004 and constitutes one of the major problems of electrical steel plant.
Why do we need to recycle EAF dust?
Abstract. 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 recycling or its incorporation into other materials.
How much EAF dust is produced in the world?
In 2006 alone, it was estimated that global production of EAF dust reached a near 7 million tons, a staggering amount, considering the steel industry continues to expand in tandem with growing economies.