Multifunctional integrated ecological DC electric arc furnace complete equipment
A DC Electric Arc Furnace (DC-EAF) is a metallurgical device that uses direct current (DC) to generate high-temperature electric arcs for melting metals. Widely applied in steelmaking, alloy production, and specialty material manufacturing, it offers higher efficiency and stability compared to traditional AC arc furnaces, with reduced grid impact. It is a key tool in modern green metallurgy.
Parameter
place of origin
Shaanxi, China
video outgoing-inspection
Provided
machinery test report
Provided
core components
PLC, motor, Pump
dimension(l*w*h)
Customization Size
key selling points
Energy saving
Melting Material
Scrap Steel
Final product
Quality Carbon Steel
Raw material
Scrap Steel Iron
Product Name
Electric Arc Furnace
I. Core Components
Electrode System
DC Electrode: A single graphite or carbon electrode (negative pole) fixed at the furnace roof center, conducting high current to form the arc.
Furnace Bottom Conductive Layer: A conductive material (e.g., metal plates or refractory materials) lining the furnace bottom as the positive pole, completing the electrical circuit.
Furnace Structure
Built with high-temperature refractory materials (e.g., magnesium-carbon bricks, corundum bricks) to insulate and protect the furnace shell.
Designed as a tilting or fixed furnace for efficient tapping and maintenance.
Power System
A dedicated DC power supply (e.g., IGBT rectifiers or high-voltage DC generators) providing stable low-voltage (hundreds of volts) and high-current (thousands to hundreds of thousands of amperes) output.
Auxiliary Systems
Cooling System: Water-cooled electrodes, furnace mouth, and roof to prevent overheating.
Emission Control: Integrated dust removal (e.g., bag filters) and heat recovery boilers to minimize pollution.
Automation: PLC or DCS systems for real-time control of current, voltage, electrode positioning, and smelting parameters.
II. Working Principle
Arc Smelting: DC current flows between the electrode and metal charge (e.g., scrap steel, alloys), producing an electric arc (3,000°C–5,000°C) to melt the metal.
Efficiency Advantage: The unidirectional DC arc ensures concentrated heating with minimal melt pool turbulence, reducing thermal losses and electrode wear.
Process Flexibility: Supports oxygen blowing, material charging, and decarbonization operations for precise control of chemical composition and temperature.
III. Technical Advantages
High Efficiency & Energy Savings
Faster Smelting: 10%~20% shorter cycles than AC furnaces.
Lower Consumption: 5%~15% less electricity usage due to stable arcing.
Reduced Downtime: Single-electrode design minimizes adjustments during operation.
Superior Product Quality
Stable melt pool leads to uniform metal composition and fewer impurities, ideal for high-purity steels, alloy steels, and specialty materials.
Environmental Benefits
Lower noise and dust generation; compatible with emission scrubbing systems for ultra-low emissions.
Extended Electrode Life
Uniform tip wear extends electrode lifespan by 30%~50% compared to AC systems.
IV. Typical Applications
Steel Production: Stainless steel, tool steel, bearing steel, high-manganese steel, and other specialty alloys.
Non-Ferrous Smelting: Refining copper, aluminum, nickel-based alloys, and precious metals.
Scrap Recycling: Efficient processing of scrap metal and alloys for resource circularity.
Research & Development: Laboratory-scale melting of high-temperature alloys, magnetic materials, and aerospace components.
V. Future Development Trends
Smart Automation: AI and big data-driven optimization for fully automated and unmanned operation.
Green Upgrades: Integration with waste-heat recovery and carbon capture technologies to lower carbon footprints.
Hybrid Processes: Combining with electroslag remelting (ESR) or vacuum degassing for enhanced material properties.
FAQ
Q1: Are you trading company or manufacturer?
A: We are manufacturer.
Q2: How long is your delivery time?
A: Generally it is 60 days, it is according to quantity requires.
Q3: What is the term of payment?
A: Payment <=1000USD,100%in advance. Payment>=1000USD,30% T/T in advance, balance before shipment.
lf you are interested in this equipment, please don't hesitate to contact us!
lf the machine is not suitable for your plant, please e-mail us the following information:
1. What's the quality standard of billet do you want to casting? ls it common carbon steel or low carbon steel?
2. What's the billet size and length?
3. Do you have melting furnace? lf yes, how many tons of furnace with how many quantity?
4. What's the capacity per hour? According to your information, we will offer high efficiency design and best price for it.
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