Velco pneumatic conveyor systems, you can blow bulk goods such as coal dust, filter dust or silicon carriers into the cupola and thus save operating costs.Even with small melt sizes of 5-10t, the deep injection of fine lime can reduce the sulfur content at low cost.By adding alloys automatically to the ladle, you can improve your casting quality.Zinc and Iron Recovery from Filter Dust by Melt Bath Injection into an Induction FurnaceThe increased proportion of galvanized materials in circular scrap leads to an increased zinc-content in the filter dusts of iron and steel plants.The recovery of this raw material from a waste material is not only interesting from an environmental point of view but also from the economic one.As part of a BMBF research project, VELCO has blown Zn-containing filter dust into a molten metal for a customer, whereby a highly concentrated zinc oxide product is produced.