75ton Electric Arc Furnace

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PRODUCT DETAIL

1. Technical parameter
  Nominal tapping capacity     75t
  Average tapping capacity     75t
  Shell internal diameter      Ф5600mm
  Electrode traveling system     Hydraulic
  Method of charging      Top (using charging buckets)
  Method of tapping       EBT
  Side wall construction      Water cooled ,tubular
  Forward tilting angle (steel tapping)   20°
  Backward tilting angle (slag tapping)  12°
  Roof construction       Water-cooled, tubular
  Roof lifting distance      400mm
  Roof rotation angle      70°
  Electrode diameter       Ф550mm
  Pitch circle diameter      Ф1250mm
  Electrode lifting distance     4500mm
  Electrode traveling speed     6 / 4m/min (up/down)
  Transformer capacity      63MVA+20% (long term)
  Primary voltage       20kV, 3P, 50Hz
  Cooling mode        OFWF
  Short net Impedance      ≤0.65+j2.7mΩ
  Three phase unbalance      ≤5%
  Hydraulic pressure       12MPa
  Hydraulic medium       Water-glycol
  Water pressure        0.4MPa
  Inlet water temperature      ≤35℃
  Outlet water temperature     ≤55℃
  Total water consumption     1200 m3/h
  Lower shell weight (with lining and hanger) 160t
2. Supply list of EAF-75T
SN Item Qty Remark
1 Mechnical parts  
1.1 Furnace body (upper shell and lower shell) 1 set 
1.2 Tilting mechanism 1 set 
1.3 Water cooled roof and water pipe 1 set Tubular
1.4 Roof lifting and rotating mechanism 1 set 
1.5 Electrode arms and traveling mechanism 1 set 
1.6 EBT platform 1 set 
1.7 Rotation frame locking device 1 set 
1.8 Feeding hopper(on the roof) 1 set 
1.9 Electrode connection device  1 set 4 nos.
1.10 Cooling water distributor 1 set 
2 Electrical parts  
2.1 Transformer 63MVA/20kV c/w hydro-oil cooler 1 set 
2.2 20kV high voltage system (GBC) 1 set ABB vacuum breaker
2.3 Short network 1 set 
2.4 Lower voltage system 1 set 
2.5 PLC automation and HMI system 1 set Siemens PLC S7-300
3 Auxiliary items  
3.1 Hydraulic equipment 1 set Proportional valve & pump make: Parker
3.2 Compressed air device 1 set 
3.3 Lubrication station 1 set 
4 Optional parts  
4.1 Door carbon – oxygen lance system 1 set With carbon injection
4.2 Wall lance (4 nos.) 1 set With valves stand
Supplied by the Buyer:
1) Installation and installation materials
2) Hydraulic medium, lubrication medium and cleaning medium;
3) Graphite electrodes, Furnace refractory lining;
4) Civil works and design (Seller provides furnace foundation drawings and civil work requirements), embedded furnace foundation parts;

5) Water supply and gas supply main inlet are laid to Seller’s equipment connection point, H.V. incoming line to Seller’s H.V. panel and furnace transformer terminals, L.V. are connect to Seller’s L.V. distribution panel.

 

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