We broke ground in Barnwell, South Carolina to begin the construction of this recycling facility in August of 2008. By April of 2010, we were commissioned for our start-up.
Our Barnwell location is a 72-acre site (that’s almost 55 football fields). In addition, Barnwell features a 9-acre “Process Footprint”. This area is designated and recognized as a hazardous waste recycling facility by SCDHEC and EPA Region 4.
941 Technology Drive
Barnwell, SC 29812-8650
What happens here?
At our recycling facilities, EAF dust is fed along with coke or coal into a Waelz kiln, which is a large, rotating metal tube. In the kiln the EAF dust is tumbled and heated to a temperature where certain non-ferrous metals are vaporized. Air is drawn through the kiln and the metal vapors are oxidized to form solid metal oxide particulates which, once collected, is WOX. Air from the kiln passes through a product collector where the WOX is gathered. WOX is a light gray metal oxide powder, that contains 60% zinc oxide. Other metal oxides recovered in WOX include lead oxides, cadmium oxides, and chromium oxides.
The remaining portion of EAF dust that exits the kiln is Iron-Rich Material, referred to as IRM. IRM contains 40% iron oxide and other minerals, and once tested to ensure hazardous metals have been removed, can be sold to asphalt, cement, or aggregate companies, and it can even go back into the steel production process.