What It Is: Porous iron (90–94% Fe) produced by chemically reducing pellets or lumps without melting, using natural gas or coal. Forms: DRI: Lumpy or

What It Is: Uniform, hardened spheres (6–16 mm diameter) made from concentrate and binders (e.g., bentonite), fired at 1,200–1,300°C to achieve high strength. Iron content:

What It Is: A high-grade iron ore powder (60–70% Fe) obtained by removing impurities such as silica and alumina from low-grade ore through crushing, grinding,