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Сайед Рашид Ахмед БаттКомпания Shaanxi Chengda Industrial Furnace Co., Ltd. завершила ввод в эксплуатацию электрической дуговой печи, рабочие тщательно сотрудничали с инженерами Chengda, чтобы изучить и использовать оборудование,проявляя глубокую дружбу и отличное сотрудничество между народами Китая и Пакистана. -
АбубакарПосле более чем 1 месяца интенсивного производства и отладки,Успешно введено в эксплуатацию 2 комплекта теплообменных установок для осаждения дымовых газов ~ Все сотрудники, участвующие в проекте, упорно трудились.~ -
Джи-хван.Теплые поздравления. Компания по производству промышленной печи в Шэньси Чэнгде в Южной Корее.Установка оборудования для плавки драгоценных металлов в округе Северный Чунчхонг, тщательное производство и строгое ввод в эксплуатацию, с нетерпением ожидая будущего в большей области для достижения взаимовыгодного взаимовыгодного сотрудничества!
Контактное лицо :
Du
Номер телефона :
13991381852
Double electrode DC arc furnace with World's leading technology/invention patents
| Место происхождения | Китай |
|---|---|
| Фирменное наименование | Shaanxi Chengda |
| Сертификация | ISO 9001 |
| Номер модели | Переговоры на основе мощности оборудования |
| Количество мин заказа | 1 единица |
| Цена | The price will be negotiated based on the technical requirements and supply scope of Party A |
| Упаковывая детали | Обсудить в соответствии со специфическими требованиями Стороны А. |
| Время доставки | 2-3 месяца |
| Условия оплаты | Л/К, Т/Т, западное соединение |
| Поставка способности | Завершить производственную цепочку поставок, поставлять в срок и соответствовать стандартам качества |
Свяжитесь со мной для бесплатных образцов и купонов.
Что такое?:0086 18588475571
Вичат: 0086 18588475571
скайп: sales10@aixton.com
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xПодробная информация о продукте
| Выделить | Double electrode DC arc furnace,DC arc furnace with patents,Steelmaking DC arc furnace |
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|---|---|---|---|
Характер продукции
Double-electrode DC arc furnace (DE-DC EAF) is a smelting equipment that uses two graphite electrodes (one cathode and one anode) to form a DC arc, with stable arcs, low noise, and low electrode consumption, suitable for steelmaking, non-ferrous smelting, and metal recycling. Below is a detailed technical and application overview:
Basic Structure & Working Principle
- Core Components: Two graphite electrodes (cathode + anode), DC power supply (thyristor rectification), furnace body (water-cooled furnace cover/wall, refractory lining), electrode lifting mechanism, and optional bottom anode (for some configurations).
- Working Principle: DC current flows from the anode electrode through the molten bath to the cathode electrode, forming two arcs (one between each electrode and the bath). It avoids the complex design of single-electrode DC EAF bottom anodes and is easy to retrofit from AC furnaces.
- Arc Characteristics: Arcs are stable and concentrated, with a deflection angle of 15°–30° toward the bath; electromagnetic force causes the arc to rotate around the center (several times per second), ensuring uniform heating.
Key Technical Parameters (Typical Ranges)
| Parameter | Laboratory/ Small (≤5t) | Industrial/ Medium (5–50t) | Industrial/ Large (≥50t) |
|---|---|---|---|
| Rated Capacity | 0.5–5t | 5–50t | 50–420t |
| DC Input Voltage | 300–500V | 500–800V | 800–1200V |
| Rated Current | 1–5kA | 5–20kA | 20–280kA (e.g., 420t furnace: 280kA total) |
| Rated Power | 0.5–2MW | 2–10MW | 10–50MW |
| Electrode Diameter | 200–400mm | 400–700mm | 700–1200mm |
| Melting Noise | ≤90dB | 85–88dB (15dB lower than AC EAF) | 85–90dB |
| Electrode Consumption | ≤1.2kg/t | 0.8–1.0kg/t (50% lower than AC EAF) | 0.6–0.9kg/t |
| Melting Rate | 2–4℃/min | 4–6℃/min | 5–8℃/min |
| Tapping Temperature | 1600–1700℃ | 1650–1800℃ | 1700–1850℃ |
Core Advantages vs. Traditional Furnaces
- Arc Stability & Uniform Heating: No arc flicker; electromagnetic stirring of the bath eliminates hot spots, reducing lining erosion by 20%–30%.
- Low Energy & Electrode Consumption: Power consumption is 5%–10% lower than AC EAF; electrode consumption is reduced by ~50% compared to AC EAF (single-electrode DC EAF level).
- Grid-Friendly: Smaller voltage fluctuations and reactive power changes; DC reactor suppresses inrush current, suitable for areas with weak grids.
- Flexible Retrofit: No need for complex bottom anodes; existing AC furnace vessels can be converted to DE-DC EAF at low cost.
- Low Noise: Melting noise is ~87dB (15dB lower than AC EAF), with mainly high-frequency components that are easy to isolate.
Application Scenarios
- Special Steel Smelting: Bearing steel, low-carbon stainless steel, heat-resistant steel; high alloy recovery rate (≥96% for Ni/Cr/Mo).
- Non-Ferrous Metallurgy: Magnesium smelting (DC submerged arc furnace), copper/nickel alloy smelting; stable operation and large crystal grains.
- Metal Recycling: Scrap steel, smelting waste residue, and rare metal recovery; strong adaptability to raw materials.
- Refractory Metal Processing: Melting of tungsten/molybdenum alloys (with auxiliary plasma heating).
Typical Configuration & Operation Notes
- Electrode Configuration: Two top electrodes (cathode + anode) are standard; some large furnaces add 2–4 water-cooled bottom anodes to balance current distribution.
- Power Supply System: Thyristor rectifier + DC reactor; arc length is automatically adjusted by the electrode lifting mechanism to stabilize power input.
- Cooling System: Total water flow rate of 10–500m³/h, water pressure of 0.3–0.6MPa, and conductivity ≤50μS/cm to prevent electrode overheating.
- Atmosphere Control: Optional argon/nitrogen sealing to reduce oxidation and improve alloy recovery.
Comparison with Other Furnace Types
| Feature | Double-Electrode DC EAF | Single-Electrode DC EAF | Three-Phase AC EAF |
|---|---|---|---|
| Electrode Arrangement | Two top electrodes (cathode + anode) | One top cathode + bottom anode | Three top electrodes |
| Bottom Anode | Optional (simpler design) | Mandatory (complex design) | Not required |
| Arc Stability | High | High | Low (flicker) |
| Electrode Consumption | Low (~0.8–1.0kg/t) | Low | High (~2.0–3.0kg/t) |
| Retrofit Cost | Low (from AC furnaces) | High | N/A |
| Noise Level | Low (85–88dB) | Low | High (100–110dB) |
Development Trends
- Ultra-High Power: Large-scale furnaces (e.g., 420t) adopt dual-cathode + multi-bottom anode configurations to improve power density.
- Energy-Saving Technology: Combined with oxygen-fuel combustion and waste heat recovery, energy consumption is reduced by 10%–15%.
- Intelligent Control: AI-based arc length and temperature control systems to optimize smelting cycles.
- Environmental Protection: High-efficiency dust removal (emission concentration ≤10mg/m³) and low-NOₓ operation.
Summary
Double-electrode DC arc furnaces balance performance, cost, and flexibility, making them suitable for both new plants and AC-to-DC retrofits. They are widely used in high-quality steelmaking, non-ferrous smelting, and metal recycling, with significant advantages in energy saving, environmental protection, and operational stability.
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