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サイド・ラシド・アフメッド・バットシャンシ・チェンダ工業炉株式会社 電気弧炉の稼働を完了し 労働者は チェンダの技術者と 慎重に協力して 機械の操作を学びました中国とパキスタンの民間の深遠な友情と優れた協力を示す. -
アブバカール1ヶ月以上の集中的な制作とデバッグの後熱交換煙ガス沉着室機器2セットが成功して稼働開始しました ~ プロジェクトに関与したすべてのスタッフが一生懸命働きましたほら! -
ジ・ワン温かいおめでとう 韓国のシャンシー・チェンダ工業炉製造会社北チョンチェョン郡 宝石の溶融炉の設備の設置と慎重な製造と厳格な稼働相互に有益な協力を達成するために,より多くの分野での未来を期待しています!
コンタクトパーソン :
Du
電話番号 :
13991381852
Double electrode DC arc furnace with World's leading technology/invention patents
| 起源の場所 | 中国 |
|---|---|
| ブランド名 | Shaanxi Chengda |
| 証明 | ISO 9001 |
| モデル番号 | 処理能力に基づいて交渉する |
| 最小注文数量 | 1台 |
| 価格 | The price will be negotiated based on the technical requirements and supply scope of Party A |
| パッケージの詳細 | パーティAの特殊要件に従って議論する |
| 受渡し時間 | 2~3ヶ月 |
| 支払条件 | L/C、T/T、ウェスタンユニオン |
| 供給の能力 | 生産のサプライチェーンを完了し,タイミングで供給し,品質基準を満たす |
無料のサンプルとクーポンを私に連絡してください.
WhatsAPPについて:0086 18588475571
ウェチャット: 0086 18588475571
Skype: sales10@aixton.com
24時間オンラインでサポートします
x商品の詳細
| ハイライト | Double electrode DC arc furnace,DC arc furnace with patents,Steelmaking DC arc furnace |
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|---|---|---|---|
製品の説明
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.
