Description
Electric Arc Furnace (EAF)
Ultra-High Power Steelmaking Solutions by HANI Metallurgy
Advancing the Standard of High-Efficiency Steelmaking
The Electric Arc Furnace (EAF) is the premier equipment for modern steel production, offering unmatched flexibility and energy efficiency in recycling iron and steel scrap. As a high-capacity arc furnace, it utilizes high-intensity electrical arcs to melt scrap metal and primary iron sources. At HANI, we have focused our research on ultra-high power (UHP) technology, delivering EAF steelmaking solutions with power ratings up to 1500 KVA per ton of liquid steel. Our scrap melting units are engineered to reduce tap-to-tap times to less than 45 minutes, significantly increasing the annual productivity of the steel plant while maintaining the highest alloy quality.
HANI’s Electric Arc Furnace (EAF) technology incorporates advanced raw material pre-heating, which can reduce energy consumption to below 300 kWh per ton of steel. Our arc furnace units are designed with a robust furnace shell, high-efficiency electrode management, and automated spray cooling systems. When combined with our secondary refining equipment like LF and VD, the HANI EAF steelmaking system provides a comprehensive solution for producing high-grade carbon steels, alloy steels, and stainless steels. As a world-class provider of scrap melting technology, HANI ensures that every Electric Arc Furnace (EAF) meets the rigorous demands of the global steel industry.
System Components of HANI EAF Furnace
| Sub-system | Technical Feature | Operational Benefit |
|---|---|---|
| Furnace Shell | High-tensile steel shell with high-performance refractory. | Durability & high-temperature resistance. |
| Electrode System | UHP graphite electrodes with hydraulic regulation. | Rapid melting & stable arc control. |
| Cooling System | Water-cooled wall panels & spray cooling for electrodes. | Extended component life & safety. |
| Purification Plant | Multi-stage gas purification & dust collection. | Zero-particulate environmental compliance. |
The Process of Scrap Melting and Refining
The EAF steelmaking process involves the rapid conversion of electrical energy into thermal energy via the electric arc. In an Electric Arc Furnace (EAF), the intense heat of the arc (exceeding 3000°C) melts the scrap metal charge. HANI’s arc furnace technology optimizes the melting kinetics by utilizing oxygen-carbon lances for chemical energy input and slag foaming. This scrap melting route ensures that the phosphorus and sulfur levels are effectively managed in the primary stage.
Thermodynamic Reactions in EAF:
1. [P] + [O] → (P2O5) (Dephosphorization in basic slag)
2. [C] + [O] → CO(g) (Slag Foaming & Energy Input)
3. Fe + 1/2 O2 → FeO (Initial Oxidation)
Scientific facts from HANI‘s engineering research demonstrate that the use of a micro-mist spray system and intelligent power control in our Electric Arc Furnace (EAF) significantly stabilizes the interior temperature field. This improves the recovery efficiency of the arc furnace and ensures the purity of the produced steel. As a leader in EAF steelmaking, HANI provides scrap melting solutions that are not only highly productive but also meet the strictest environmental standards for gas emissions.
Key Advantages of HANI EAF Technology
- Ultra-High Power Capability: Our EAF steelmaking units deliver up to 1500 KVA/t, enabling the fastest scrap melting cycles in the industry.
- Raw Material Pre-heating: HANI’s arc furnace utilizes waste heat recovery to pre-heat scrap, reducing power consumption by up to 20%.
- Precision Control: Advanced PLC automation in our Electric Arc Furnace (EAF) ensures optimal electrode positioning and energy matching for stable production.
Professional FAQ for EAF furnace
Q1: What is the typical tap-to-tap time of a HANI EAF furnace?
A: With HANI’s UHP technology and efficient electrode management, our Electric Arc Furnace (EAF) achieves a tap-to-tap time of less than 45 minutes for optimal scrap melting.
Q2: How does HANI handle environmental regulations in EAF steelmaking?
A: Our arc furnace units are equipped with multi-stage gas purification systems that monitor and remove harmful particulates and gases, ensuring full compliance with environmental standards.
Q3: Can HANI EAF furnaces produce stainless steel?
A: Yes. When combined with AOD or VOD units, HANI’s Electric Arc Furnace (EAF) is an excellent primary melting tool for EAF steelmaking of high-quality stainless steels.
Partner with HANI for High-Power Steelmaking
The Electric Arc Furnace (EAF) is the core of sustainable steel production. Trust HANI for a world-class arc furnace solution that maximizes your productivity and efficiency.
