30 Ton Electric Arc Furnace

1. Technical parameter
  Nominal tapping capacity    30T
  Average tapping      30T(hot heel: 8 tons)
  Shell internal diameter     Ф4300mm
  Method of charging     Top (using charging buckets)
  Method of tapping      EBT
  Side wall construction     Water cooled ,tubular
  Forward tilting angle (tapping)   20°
  Backward tilting angle (slagging)  12°
  Roof construction      Water-cooled, tubular
  Roof lifting distance     400mm
  Roof rotation angle     68°
  Electrode diameter      Ф450mm (UHP electrode)
  Pitch circle diameter     Ф1000mm
  Electrode lifting distance    3100mm 
  Electrode traveling speed    6 / 4 m/min(up/down, automatic)
  Transformer capacity     18MVA+20% (overload)
  Primary voltage      33KV, 3P, 50Hz
  Cooling mode       OFWF
  Three phase unbalance     ≤5％
  Hydraulic pressure      12MPa
  Water pressure       0.4MPa
  Inlet water temperature     ≤35℃
  Outlet water temperature    ≤55℃
  Total water consumption    500 m3/h, emergency water 180 m3/h (for 30mins)
  Water quality       Industrial clean water
  Oxygen flow rate      2000Nm3/h (average)
2. Supply list
SN Item Qty Remark
1 Mechanical parts  
1.1 Furnace body (upper shell, lower shell, accessory) 1 set Upper shell: tubular
1.2 Tilting platform mechanism 1 set 
1.3 Water cooled roof 1 set Tubular
1.4 Roof lifting and rotating mechanism 1 set 
1.5 Electrode traveling mechanism 1 set Electrode arm & master
1.6 EBT platform 1 set 
1.7 Rotation frame locking device 1 set 
1.8 Electrode nippling device  1 set 4 pcs. cells
1.9 Cooling water distributor 1 set With instrument
2 Electrical parts 1 set 
2.1 Transformer 18MVA/33kV c/w hydro-oil cooler 1 set China top make
2.2 High voltage switchboard 1 set GBC-40.5kV panel
2.3 Short network 1 set c/w water cooled cables
2.4 Lower voltage control panels 1 set GGD type panel
2.5 PLC automation and HMI system 1 set Siemens PLC, S7-300
3 Auxiliary items  
3.1 Hydraulic power pack 1 set Proportional valve & pump make: Parker
3.2 Door lance manipulator & carbon injection device 1 set 
Supplied by the Buyer:
1) Furnace refractory lining, hydraulic medium, lubrication medium and cleaning medium, graphite electrodes;
2) Civil works and design (Seller provides furnace foundation drawings and civil work requirements), embedded furnace foundation parts;
3) 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.