Abstract：The technology of producing ultra-fine iron powder by hydrogen reduction is studied, using iron oxide
red of pickling waste in steel works as raw material, the cost is less than one third of the cost of producing ultrafine
iron powder by carbonyl method. The properties of the products are TFe≥98.5% , loose density is 0.80~1.20 g/cm3,
free grain size D50≤16.5 μm, specific surface area is more than 2.10 m2/g. It is widely used in ultra-hard diamond
tools, powder metallurgy injection molding materials, high-specification soft magnetic materials, adsorption materials,
aerospace materials, food and other fields.
2024, Vol. 34 
