Ferrosilicon electric furnaces are divided into reduction electric furnaces and refining electric furnaces. Reduction electric furnace, also known as submerged arc furnace or submerged arc furnace, adopts the submerged arc operation of inserting electrode into furnace charge. The reduction electric furnace has open, closed (or semi closed), and the furnace body has various forms such as fixation and rotation. Electric refining furnace is used to refine medium carbon, low carbon and micro carbon ferroalloys. The capacity of electric furnace is generally 1500 ~ 6000 KVA, which adopts the form of open fixing or tilting with cover. The former is similar to the reduction furnace and can be equipped with continuous self baking electrode; The latter is similar to electric arc steelmaking furnace, using graphite or carbon electrode.
1, Use of ferrosilicon
Ferrosilicon is an essential deoxidizer in steelmaking industry, and it is also added as alloying agent. In the steelmaking industry, about 3-5kg 75% ferrosilicon is consumed for every 1t of steel produced.
3600kVA HCFeCr Submerged Arc Furnace
| SN |
Equipment |
SPEC or Model |
Unit |
Qty |
Remark |
|
| 1 |
Submerged Arc Furnace |
|
set |
1 |
|
| 1.1 |
Mechanical Parts |
|
|
|
|
| 1) |
Furnace shell and H beam |
Steel structure part |
set |
1 |
Steel structure |
| |
Fume hood |
Steel structure part, water cooled cover panel |
set |
1 |
Steel structure |
| 2) |
Chimney |
Steel structure part |
sets |
2 |
Steel structure |
| |
Tapping hole fume hood |
Steel structure part |
set |
1 |
Steel structure |
| |
Electrode holder |
|
sets |
3 |
|
| |
Bellows pressure ring |
|
sets |
3 |
|
| |
Water cooled protect shell |
|
sets |
3 |
|
| 3) |
Electrode holding tube |
|
sets |
3 |
|
| |
Electrode tube |
|
sets |
3 |
|
| |
Pneumatic electrode clamp |
|
sets |
3 |
|
| |
Fittings, etc |
|
set |
1 |
|
| 4) |
Hydraulic power pack |
|
set |
1 |
|
| 5) |
Pneumatic valve stand |
|
set |
1 |
|
| 6) |
Seal device |
|
sets |
3 |
|
| 7) |
Cooling water distributor |
|
set |
1 |
|
| |
Copper tube |
|
set |
1 |
|
| |
Water cooled cable |
|
nos. |
36 |
|
| 8) |
Water cooled compensator |
|
nos. |
36 |
|
| Forged copper contact fence |
|
nos. |
18 |
|
| |
Fittings, etc |
|
set |
1 |
|
| |
Insulating material |
|
set |
1 |
|
| 9) |
Raw material distribution device |
Steel structure part |
set |
1 |
Steel structure |
| 10) |
Raw material feeding hoppers & chutes |
Steel structure part |
set |
1 |
Steel structure |
Rotary furnace body system of industrial silicon furnace
The furnace shell diameter of large ferrosilicon and industrial silicon electric furnace is large, and the furnace size is large. The adoption of rotating furnace body technology can effectively improve the permeability of furnace charge, avoid the sintering of furnace charge into shell, expand molten pool, improve smelting conditions and improve smelting quality.
Lower controller of industrial silicon furnace
| 1.2 |
Electrical Parts |
|
|
|
| 1) |
L.V. control system |
GGD |
set |
1 |
| 2) |
PLC panel |
Siemens S7-200 smart |
set |
1 |
| 3) |
H.V. panel |
KYN28-20kV, armoured type |
set |
1 |
| 1.3 |
3 phase furnace transformer |
3200kVA/20kV |
set |
1 |
| 1a |
Opener-mutgun |
Purchased equipment |
sets |
2 |
| 2 |
Fume extraction system |
Fume dust concentration: 50mg/m3 |
1 |
Sets |
| |
Fume pipe and supporter |
|
set |
1 |
| |
Dilution valve |
|
set |
1 |
| |
Pipe valve |
|
sets |
2 |
| |
Tapping hole fume pipe valve |
|
sets |
2 |
| |
Blower |
Fume flow: 80,000Nm3/h |
set |
1 |
| |
Dust collector |
Filtering area: 1650m2 |
set |
1 |
| |
Motor |
250kW, AC400V |
set |
1 |
| |
Instrument |
|
set |
1 |
| 3 |
Water treatment plant |
|
|
|
| |
Main water supply pump |
Q=220m3/h,H=55m,N=55kW,n=1480r/min,U=380V |
nos. |
2 |
| |
Water tower pump |
Q=200m3/h,H=25m,N=22.5kW,n=1480r/min,U=380V |
nos. |
1 |
| |
FRP cooling tower |
Q=200m3/h,T1=50ºC,T2=35ºC,N=5.5kW |
nos. |
1 |
| |
Compressed air holder |
V=2.0m3 |
no. |
1 |
| |
Water treatment control panel |
|
nos. |
3 |
| 4 |
Tapping equipment |
|
|
|
| |
Ladle |
1.5m3 |
sets |
4 |
| |
Slag pot |
3m3 |
sets |
4 |
| |
Ladle car |
|
sets |
2 |
| |
Vertical winch & guide wheel |
5t |
sets |
2 |
| |
mold |
|
sets |
8 |
| |
Hanger |
|
set |
2 |
| 5 |
Crane and carrier |
|
|
|
| |
Electrical car |
30t |
set |
1 |
| |
Truck scale |
100t 3m×16m |
set |
1 |
| 6 |
Shop power distribution system |
|
|
|
| |
H.V. switchboard |
20KV/400A |
pcs. |
4 |
| |
Shop power transformer |
S11-800 800kVA 20kV/0.23~0.4kV |
set |
1 |
| |
L.V. power distribution panel |
|
pcs. |
6 |
| |
Power box |
XLL2 or XL-21 |
pcs. |
4 |
| 7 |
FC compensation system |
|
|
|
| |
Capacitor bank |
2400kVar |
set |
1 |
| |
Reactors |
|
set |
1 |
| |
Disconnector |
|
set |
1 |
| |
Control panel |
|
set |
1 |
| 8 |
Laboratory instrument |
|
|
|
| |
Crusher |
|
set |
1 |
| |
Box furnace |
|
set |
1 |
| |
Tube furnace |
|
set |
1 |
| |
Electronic balance |
|
set |
1 |
| |
Drying chamber |
|
set |
1 |
| |
Platinum crucible |
|
sets |
3 |
| |
Chemical laboratory equipment |
|
set |
1 |
| 9 |
Air compressor |
|
|
|
| |
Screw air compressor |
6m3/min, P=0.8MPa |
set |
1 |
| |
Freezing dryer |
|
set |
1 |
| |
Air filter |
|
set |
1 |
| |
Air holder |
10m3 |
set |
1 |
| 10 |
Packing & China land transportation |
|
lot |
1 |
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