1. Equipment feature
1.1 Water cooled short net: includes water cooled copper tube busbar, water cooled cables, forged copper contact pad, etc.
1.2 Pressure ring type electrode holder: hydraulic type pressure holder keeps copper pads and electrode contacting good.
1.3 Hydraulic electrode lifting and pneumatic electrode clamping.
1.4 Semi-closed type lower fume hood.
1.5 Furnace top materials distribution and charging device.
1.6 PLC and HMI automation control system.
2. Main parameter
2.1 Furnace transformer
Rated capacity 3 × 5000kVA + 20% overload
Primary voltage 20kV
Secondary voltage 134 - 154 - 178 V
Secondary current 56.237kA
Connection D, d0
2.2 Furnace
Electrode type Self-baked
Diameter of electrode Φ1100mm (Graphite electrode)
Diameter of PCD Φ2800 ± 50mm
Electrode traveling speed 0.5m/min.
Electrode traveling stroke 1200mm (1800mm for maintenance)
Furnace shell (D/H) Φ8800mm/4700mm
Furnace hearth (D/H) Φ7200mm/2500mm
Fume hood (D/H) Φ8900mm/2400mm
Contact pad nos. per electrode 8
Electrode current density 5.9A/cm2
Hydraulic working pressure 10MPa
Cooling water circulation flow rate 280t/h
Cooling water working pressure 0.3MPa
SN |
Equipment |
Qty |
Unit |
Remark |
1 |
Furnace shell and I beam supporters |
1 |
set |
Steel plate welded |
2 |
Fume hood and chimney |
1 |
set |
Steel plate welded |
3 |
Electrode holder device |
3 |
sets |
|
4 |
Electrode lifting & clamping device |
3 |
sets |
|
5 |
Hydraulic power pack |
1 |
set |
|
6 |
Pneumatic valve stand |
1 |
set |
|
7 |
Cooling water distributor |
1 |
set |
|
8 |
Short net |
1 |
set |
Copper tube |
9 |
Insulating parts |
1 |
set |
|
10 |
5000kVA/20kV furnace transformer |
3 |
sets |
China make |
11 |
20kV H.V. switchboard |
1 |
set |
China make |
12 |
L.V. control panels |
1 |
set |
|
13 |
PLC and HMI system |
1 |
set |
Siemens S7-300 |
14 |
WinCC + Step 7, programming |
1 |
lot |
|
Industrial Silicon Furnace Application: Submerged arc furnace will be mainly applied for reduction of metallurgical ore to produce the FeSi, FeMg, FeCr, Ferrotungsten, SiMg and Titanium slag alloy, which will be the important material for metallurgical and chemical industries. Features of the equipment: For submerged arc furnaces, the lining will be made of carbon or magnesia refractory material. The electrode is self-baking. The electrode will be inserted into the charging material.' The material will be molten by arc and current. The charging material will be continuously adding. The tapping will be batch type. It is a continuously operation industry furnace.
Main equipment for submerged arc furnaces
1. Furnace Shell
2. Furnace Cover
3. Fume exhaust system
4. Electrode System: electrode holder, electrode lifting device and electrode clamping/
releasing device
5. Charging System
6. Hydraulic System
7. High Current System
8. Water-cycling system
9. Tapping System
10. Transformer
11. L.V & H.V system
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