PRIMUS^® PROCESS

The PRIMUS® Process developed by Paul Wurth provides an innovative solution for recycling iron and steelmaking dust and sludge and recovering valuable iron, zinc and other non-ferrous metals, recycling non-ferrous residues, and recovering valuable metallic contents. This new process is based on the combination of an advanced multiple-heath furnace and a specially designed electric arc furnace. simple material preparation for treating very fine dry material such as dust, if required, a simple blending step when treating sludge, specially designed off-gas treatment, enabling minimized use of external gas and efficient recovery of non-ferrous metal oxides. Laboratory furnace, pilot plant and industrial plant have been erected in Luxembourg since 1998. The first industrial plant, commissioned for Primorec S.A. (now ArcelorMittal Woiwer - Differdange, Luxembourg) is now treating 80 000 t/a EAF dust.