Method for melting direct reduced iron, solid iron and method for producing the same, and material for civil engineering and construction and method for producing the same
By controlling gas blowing and slag composition in induction melting furnaces, the method addresses inefficiencies in slag separation and gangue removal, producing high-purity solid iron and utilizing by-products for civil engineering, while reducing CO2 emissions.
Patent Information
- Authority / Receiving Office
- US · United States
- Patent Type
- Applications(United States)
- Current Assignee / Owner
- JFE STEEL CORP
- Filing Date
- 2023-04-10
- Publication Date
- 2026-07-02
AI Technical Summary
Conventional methods using carbon-based reducing materials in the reduction process for producing reduced iron are inefficient when transitioning to hydrogen-based reducing materials, leading to decreased efficiency in separating slag from metal, and gangue removal is difficult, especially in induction melting furnaces.
A method involving melting direct reduced iron in an induction melting furnace with controlled gas blowing, slag composition adjustment, and optional heat supply to maintain slag fluidity, allowing efficient separation of slag and production of high-purity solid iron.
The method effectively separates slag from molten iron, producing high-purity solid iron and utilizing by-products for civil engineering materials, while reducing CO2 emissions by using hydrogen-based reducing materials.
Smart Images
Figure US20260185171A1-D00000_ABST