Electric arc furnace
New technologies have emerged in EAF steelmaking, which leads to higher requirement for electric arc furnace refractories. Hitech Material offers the whole range of refractory solutions for lining of EAF of any capacity.
EAF is one of the most important steelmaking equipments in the area of metallurgy, using scrap steels as raw materials. In recent years, a series of new technologies have emerged in EAF steelmaking, which leads to higher requirement for electric arc furnace refractories.
Hitech Material offers the whole range of refractory materials for lining of EAF of any capacity, are able to offer flexible approach to design works of linings with maximum taking into account of real operational conditions of thermal units work.
Drawings and recommendations on application of refractories are elaborated with taking into account requirements of strength of linings and thermal modes of their operation.
Complete deliveries supply clients with all refractory materials used in EAF linings and its auxiliary units.
(1) DC EAF bottom
The bottom electrode life of DC EAF affects directly the service life of EAF refractories, so selection and application of EAF bottom electrode refractories is extremely crucial.
Bottom electrode sleeve bricks: Magnesia carbon bricks for EAF, Magnesia bricks, Magnesia chrome bricks, MgO- Al₂O₃& MgO- Cr₂O₃- Al₂O₃ precast blocks;
Conductive ramming mixes: MgO-Fe, MgO-C, MgO-CaO-C;
Hot gunning mass: MgO-CaO-C, MgO-C, MgO-Fe.
(2) AC-EAF bottom
Bottom: Magnesia bricks, MgO-based & MgO-CaO ramming mass;
Slag line: Magnesia bricks;
Porous plug: MgO-based & MgO-C.
2. Tap hole
Tapping spout can be built of bricks, ramming on site or casting into precast blocks. Based on the practical effect, refractories containing carbon are well suited for tap hole because of longer service life.
Magnesia carbon bricks are generally used as tube bricks in eccentric bottom tapping hole.
Tapping spout: Magnesia bricks, Magnesia carbon bricks, Al₂O₃-SiC-C bricks, Chrome corundum precast blocks, Al-Si Carbide ramming mass;
Tap hole: MgO-based well blocks & tube bricks, high quality magnesia carbon bricks, Al₂O₃-SiC-C.
EAF wall, especially slag line and hot spot, is mainly built by high quality magnesia carbon bricks;
EAF gunning mixes are mainly MgO-based & MgO-C materials;
Magnesia bricks for EAF can be used for permanent layer.
Along with the steady development of refractory materials, high alumina precast blocks become preferred refractory products.
Trigone of electrode: Corundum, Chrome corundum and Corundum magnesia series of castables and precast blocks;
Trigone periphery: Magnesia chrome and High alumina series of ramming mass;
Outside trigone: Magnesia chrome bricks, High alumina bricks and Magnesia bricks.