Reduced Iron Powder decription Reduced Iron Powder,also known as direct reduced iron sponge, using high-quality ore, the use of oxidation-reduction reaction principle, in addition to sediment through the filter approach to exclude, for pipes, the boiler and recycled water dissolved oxygen corrosion by water dissolved oxygen content of water up to 0.05mg / L or less. Having low backwash frequency, high compressive strength, not powder, not compacted, large surface area. High activity, good regeneration effect and so on.