一种超细铁粉的研发与制备

Development and preparation of ultrafine iron powder

采用氢气还原法,以钢厂酸洗废料氧化铁红为原料生产超细铁粉产品,成本低于羰基法生产超细铁粉的1/3。产品指标达到TFe大于等于98.5%,松装密度为0.80~1.20 g/cm^(3),粒度D_(50)≤16.5μm,比表面积不小于2.10 m^(2)/g,该产品广泛应用于超硬金刚石工具、粉末冶金注射成形材料、高规格软磁材料、吸附材料、航空材料、食品等领域。

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/cm,free grain size Dso≤16.5μm,specific surface area is more than 2.10 m'/g.It is widely used in ultra-hard diamond tools,powder metallurgy injection molding materials,high-specification soft magnetic materials,adsorption materi-als,aerospace materials,food and other fields.