Product Overview
The 50T AC Electric Arc Furnace is a proven electric arc melting system designed for medium-capacity steel producers, scrap recycling facilities, and alloy steel manufacturing plants. This furnace adopts a three-phase alternating current (AC) power supply and generates high-temperature electric arcs through graphite electrodes, enabling efficient melting and precise metallurgical control of scrap steel, direct reduced iron (DRI), and alloy materials. The design achieves a balanced combination of productivity, energy efficiency, and operational stability.
Working Principle
The 50-ton AC electric arc furnace is equipped with a three-electrode AC arc system. Under transformer power supply, high-temperature electric arcs are formed between the graphite electrodes and the metallic charge inside the furnace. The combined effect of arc heat and resistive heating of the charge enables rapid melting within a short time. By regulating electrode positioning, voltage, and current, precise control of furnace temperature and the melting process is achieved. This process is characterized by high thermal efficiency, fast response, and strong operational flexibility, making it one of the mainstream technologies for scrap-based steelmaking.
Technical Features
Proven and Reliable AC Arc System
- Mature three-phase AC power supply configuration with strong equipment versatility
- Stable arc performance suitable for medium-scale continuous steel production
- Well-established maintenance system with easy access to spare parts
01
Excellent Raw Material Adaptability
- Capable of processing various charge combinations including scrap steel, DRI, and hot metal
- Supports different scrap grades and flexible charge ratios to accommodate raw material fluctuations
- Facilitates improved metallurgical reactions through optimized charging practice and oxygen injection
02
Optimized Furnace Shell and Refractory Design
- Coordinated design of furnace shell, water-cooled components, and refractory lining
- Reduced heat losses and extended refractory service life
- Compact structure supporting stable operation and convenient maintenance
03
Automation and Process Control Integration
- Compatible with PLC and HMI control systems
- Real-time monitoring of key parameters such as current, voltage, power, and furnace temperature
- Enhances operational consistency and production safety
04
Product Advantages
1. Controlled Energy Consumption and Stable Operating Costs
Under optimized charge structure and standardized operating conditions, the specific power consumption of the 50T AC electric arc furnace remains within the typical industry range, meeting the energy cost control requirements of medium-sized steel plants. Optimized electrode regulation and melting rhythm further reduce ineffective power losses.
2. Environmentally Aligned with Modern Steelmaking Trends
- Electricity as the primary heat source without reliance on coke combustion
- Easy integration with dust collection and off-gas purification systems
- Reduced CO₂ emission intensity
- In line with the steel industry's transition toward green and low-carbon production
3. Flexible Process Adapted to Multi-Grade Production
- Rapid furnace temperature response enabling accurate composition control
- Compatible with ladle furnace (LF) refining systems for alloy and special steel production
- Suitable for multi-grade, small-batch, or order-driven production models
Applications
Steelmaking production lines of small and medium-sized steel plants
Scrap steel recycling and circular utilization projects
Alloy steel and structural steel production
Steelmaking process trials and technical upgrading projects
FAQ
Q1: What scale of steel plant is the 50T AC electric arc furnace suitable for?
A: This furnace is suitable for medium-capacity steel plants, supporting both continuous production and flexible scrap-based steelmaking operations.
Q2: How should one choose between an AC and a DC electric arc furnace?
A: AC electric arc furnaces feature mature technology and relatively controlled investment costs, making them suitable for most medium-scale projects. DC electric arc furnaces offer advantages in electrode consumption and arc stability but involve higher system complexity.
Q3: Does the equipment support future automation upgrades?
A: Yes. Automation, electrode regulation, and data acquisition systems can be progressively added according to operational requirements.
Q4: Can the environmental protection system be integrated into the design?
A: Yes. The electric arc furnace can be designed in coordination with dust collection, off-gas treatment, and waste heat recovery systems.
Q5: Is customized design supported?
A: Yes. Customized solutions can be provided based on raw material conditions, steel grade mix, and production rhythm.
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