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| Product Name | electric arc steelmaking furnace Resistance electric arc furnace |
| Type | According to the smelting form of the electrodes, it can be divided into two parts. (1) Non-consumable electric arc furnace, (2) Self-consuming electric arc furnace. According to the control mode of arc length, it can be divided into two parts. (1) Constant arc voltage automatic control electric arc furnace, (2) Constant arc length automatic control electric arc furnace. (3) Droplet pulse automatic control electric arc furnace. They are classified according to the form of work. (1) Periodic operating electric arc furnace (2) Continuous operational electric arc furnace According to the structure of furnace body, it can be divided into two parts. (1) Fixed electric arc furnace. (2) Rotary electric arc furnace. |
| Voltage | 380-3400V 10kv 22kv 35kv |
| Weight | 0.3T - 132T |
| Power(W) | 100kw - 100000kw |
| Max temperature | 500C - 2300C (custom Made) |
| Capacity | 10T-100Ton |
| Use | Matel Melting |
UHP-80t ultra-high power electric arc furnace
1.0. Main technical parameters of the equipment
1.1. Electric furnace name Ultra-high power electric arc furnace
Specification model UHP-80T
Steel tapping method EBT tapping
Layout form Overhead layout
1.2. Furnace body (EBT tapping)
Nominal capacity of furnace 80t
Average tapping volume 80t
Inner diameter of furnace shell Ф5800mm
Thickness of the lining wall of the molten pool 500mm
Furnace bottom lining thickness 730mm
1.3. Tilting device
Steel tapping/slag tapping angle (maximum) 20°/12°
Tilting speed of return after tapping / tapping 1°/3°/s
1.4. Electrode lifting device
Graphite electrode diameter Φ600mm (ultra high power electrode)
Graphite electrode distribution circle diameter Φ1250mm
Maximum electrode stroke 4600mm
Electrode lifting speed (up/down) 9/6 m/min
Electro-hydraulic proportional control
1.5. Furnace cover lifting/rotating device
Furnace cover lifting height 400mm
Furnace cover unscrewing angle ~70°
1.6. Hydraulic system
System working pressure 16Mpa
System working medium water-glycol
1.7. air compression system
System working pressure >0.3Mpa
Consumption 5M3/h
1.8. Furnace transformer and reactor
Transformer rated capacity 63000KVA (20% overload possible)
Primary voltage 35KV
Secondary voltage 673~585~277V
Secondary current 62.176KVA
Transformer voltage regulation method 17-level on-load electric
Cooling method: oil-water cooler
1.9. Short network impedance value ≤0.65+j2.6MΩ
1.10. Three-phase unbalance coefficient ≤5%
1.11. Cooling water system
Cooling water inlet pressure 0.5Mpa Backwater pressure 0.2Mpa
Cooling water inlet temperature ≤35ºC
Outlet temperature of cooling water ≤55ºC
Cooling water consumption ~1100m3/h
1.11. Hoisting weight of lower furnace shell (including furnace lining) ~155t
1.12. Process performance parameters
Preface Item Unit Guaranteed value Remarks
1 Electricity consumption for smelting Kwh/t ~380 25% steel scrap +75% DRI, 2 feeds per furnace, oxygen blowing 35Nm3/t steel, excluding broken electrodes and electrode joints,
Electrode quality meets process technical requirements
2 Electrode consumption Kg/t ~2.5
1.13. Electric furnace capacity
Smelting cycle: 60 min/furnace
Average tapping capacity of equipment: 80 T/furnace
Annual equipment operating time: 300 d/y
Number of smelting furnaces per day: 24×60/60min/furnace=24 furnaces/d
Daily output: 24 furnaces/d×80T/furnace=1920T/d
Annual output: 1920T/d×300d/y=576000T/Y
1,Main parameters
1.1 Inner diameter of furnace shell:Φ2200mm
1.2 Nominal capacity:2t
1.3 Max capacity of steel:3t
1.4 Diameter of electrode:Φ200mm
1.5 Diameter of electrode distribution circle:Φ680mm
1.6 Max tilting angle at tapping:45°
1.7 Max tilting angle at slag:15°
1.8 Max angle of roof swinging:85°
1.9 Furnace cover upgrading high:250mm
1.10 Rated capacity of transformer:1250KVA
1.11 Primary voltage of transformer:22KV
1.12 Secondary voltage of transformer:210V~104V
1.13 Secondary current of transformer:3440A
1.14 Cooling water pressure:0.3Mpa
1.15 Amount of used water:~16m3/h
1.16 Hoisting weight of furnace body ( include lining):8t
2,Equipment include
2.1 2t/1250KVA EAF mechanical equipment 1set
2.2 2t/1250KVA EAF low voltage electric control 1set
2.3 Electrode automatic take-off and landing regulator (PLC control)
1set
2.4 High voltage switch cabinet(22KV) 1set
2.5 1250KVA/22KV Furnace transformer 1set 2
Note:The above quote is non-transport and installation costs.
3. Self-provide parts by customer
3.1 Electrode and its connector
3.2 Refractory material and making lining
3.3 Hydraulic system working media ( water-glycol ),water and compressed air.
3.4 Civil engineering, and precast unit and screw of equipment's foundation.
3.5 The connecting pipes and lines for hydraulic oil,cooling water,air and electric.
3.6 To import high voltage power supply to the input terminal of high voltage switch cabinet and the primary side of furnace transformer by cable or copper plate, as well as to buy,lay and test the connecting cables ( copper plate ), it will be borne by the buyer.
3.7 To import low voltage power supply to the input terminal of low voltage control cabinet, and ensure its phase rotation and ground protection correctness, as well as the connecting lines that between the control cabinet and from the output terminal of control cabinet to the connection point of the equipment, all those will be borne by the buyer.
4. Installing and debugging
4.1 All the costs of seller's experts go and work at abroad for return air tickets, accommodation and meals, will be borne by the buyer. The buyer shall compensate the experts at USD 150 per engineer per day for debugging period. After normal operation the seller should be responsible to guarantee repair or change of the faulty components in 6 months, such as master control board, reactor, compensate capacitor, hydraulic device, breaker, and furnace shell (except for lining break through, stoppage or shortage of cooling water supply for components).
4.2 The seller provide operational and maintenance training for buyer's operational and maintenance people.
5. Customer service
5.1 The seller should supply the buyer the layout drawing and foundation indicating relative dimensions, as well as the technical documents relative to instruction to use and to maintenance process of equipment.
5.2 The warranty period should be 12 months from shipping date. During the warranty period, the seller should be responsible to repair or change the faulty spare parts of the furnace and accessory product, such as high voltage switch cabinet,low voltage control cabinet,transformer,hydraulic unit, etc. But, to transport,to install,to operate for the equipment that must be worked under normal working conditions, and except the easy loss pieces.
5.3 The seller supplied reserve parts to the buyer with preferential price at long term.
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