For years, the iron and steel industry has been in search of new processes for an efficient production
of virgin steel as well as for the recycling of its by-products, especially for those containing zinc.
Considering these objectives, Paul Wurth S.A., in cooperation with ProfilARBED, has developed a
process using the multiple-hearth furnace and coal fines as the reductant and main energy source. A
trial plant with a capacity of 2 t/h was built and has been operated for more than one year at the
ProfilARBED Belval site. This paper reports on the trial campaigns, which have given most promising