Electric Arc Furnace (eaf) and Ladle Refining Furnace (LF) for Steel Mill

10-120ton capacity electric arc furnace (eaf) with 3pcs graphite electrode
1. Main technical parameter of 50t EAF
Normal capacity: 50t
Average tapping quantity: 55t
Most tapping quantity: 60t
Diameter of furnace shell: Dia5100mm
Diameter of electrode Dia. 450mm(UHP)
Diameter of electrode center round: Dia. 1300mm
Journey of electrode: 2700mm
Electrode up and down velocity: Up(auto/manual) 3.5/6 m/min
Down(auto/manual) 3.0/4 m/min
Tapping fashion: EBT
Dumpage angle: Taphole 12~14°
Tapping 18~20°
Transformer: Normal capacity 35000KVA can over loading 20%
Output voltage: 547~475~220V 14 grade and the first three grade is identical power
Output current: 42542.8A
Input voltage: 35KV
Input current: 577.4A
Adjust voltage fashion: Adjust with load
Cooling fashion: Oil and water cycle-cooling
Quantity of cooling water: 620t/h2. Supply and quote of 50t EAFNo. Equipment name quantity quote
Remark
1 Principal equipment
1.1 Furnace body 1set
1.2 Water-cooling furnace cover 1set Coil pipe fashion
1.3 Furnace cover up- down and running framework 1set Include oil jar
1.4 Furnace body heel equipment 1set Include 2 oil jar
1.5 Copper-steel arm and electrode up-down equipment 1set Include: Oil jar etc
1.6 Short net 1set Include water-
Cooling cable
1.7 Examine and repair flat roof and tapping equipment 1set
1.8 Compress-air equipment 1set
1.9 Ladle vehicle 1set
1.10 Hydraulic pressure system 1set
1.11 Cooling water system 1set
1.12 Transformer: 35000KVA/35 1set
1.13 35KV high voltage on-off system 1set1.14 Low voltage system
Low voltage control desk 1set
PLC and industry control computer 1set
Automatic control system and software 1set
Following equipments no supply:
1)Fireproof material
2)Plumbaginous electrode
3)Cement base of equipments
4)Railway for Ladle vehicle
5)Hydraulic pressure medium: Water-glycol
6)Molten steel thermoscope etc
7)All brackets and collets etc
8)All high voltage cable, include the high cable for link high voltage on-off system to transformer.Main technical parameter and quote of 50t LF furnace1. Main technical parameter
1) Normal capacity: 50t
Most capacity 60t normal 55t~60t
2)Ladle
Up mouth diameter φ 3100mm
Free high 400mm when load 60t molten steel
Total high ~3190mm
Melt pool diameter φ 2500mm
3)Electrode up-down equipment
Electrode diameter φ 400mm ( High power electrode )
Diameter of electrode center round: φ 720mm
Journey of electrode: 2000mm
Velocity of electrode up and down
Auto 4.5/3m/min up/down
Manual 5.0/4.5m/min up/down
4)Transformer
Normal capacity 9000KVA can over loading 20%
Input voltage 35KV
Output voltage 224-211-188-170-155-130 5 grade
Adjust voltage with unload
Output current 24627A
5)Ladle vehicle(Share ladle vehicle with EAF)
Bear weight 80t
Velocity 0-20m/min
Drive fashion Motor-reducer and transducer
Motor power 30KW
Orientation precision: ± 10mm
8)Argon system
Normal pressure (0.6~0.8)MPa
Consume quantity: 320NL/min
Emergency pressure 1.6MPa
9)Cooling water system
Pressure ≥ 0.3MPa
Consume quantity: 220m3/h
10)Hydraulic pressure system
Normal pressure 10-12MPa
Hydraulic pressure medium: Water-glycol
2. Supply and quote of 50t LF
No. Equipment name quantity quote
(million) Remark
1 Ladle 4set Most capacity: 50t
2 Water-cooling furnace cover 1set Coil pipe fashion
3 Copper-steel arm and electrode up-down equipment 1set Include: Oil jar etc
LF-15t Ladle refining furnace main technical parameters, complete set range and quotation 1.1 Applications
LF-series ladle refining furnace is used for refining of the molten metal in conjunction with the primary melting furnace, such as arc furnace, converter or induction furnace. It possesses the various metallurgical functions of arc heating, argon blow stirring, temperature measuring and sampling and alloying, etc. It is a critical secondary steelmaking facility for high-quality carbon steel, alloy steel, bearing steel, tool steel and stainless steel, and so it could meet the requirements of continuous casting, rolling and ingot production.1.2 This ladle refining furnace is applicable to the following operating conditions:
1.2.1 Altitude shall not 2,000m;
1.2.2 Ambient temperature: 0ºC ~ 40ºC;
1.2.3 Relative humidity shall not exceed 90% (25ºC);
1.2.4 Free of conductive dust, explosive gas and corrosive gas around the furnace;
1.2.5 No evident vibration or bumps;1.3 Main technical parametersNo.DescriptionUniteParameter1LadleRated capacityt15Furnace bath diametermmφ1540Height of free spacemm4502Ladle carTravel speedm/min2-20Driving typemachinery3Electrode lifting deviceDiameter of electrode mmΦ250Diameter of electrode distribution circlemmΦ460Max, electrode travelmm1700Electrode up and down speedm/min4/3Rise in temperature speed of melting steelºC/min≥3.54Furnace coverFurnace cover lifting heightmm3005Hydraulic systemWorking pressureMPa12Working mediaWater-glycol6High current systemImpedancemΩ≤2..53-phase out-of-balance coefficient%≤57ArgonWorking pressureMPa0.2~0.8AmountNL/min20~1008Cooling water systemWorking pressureMPa0.3Inlet water temperatureºC≤35Backwater temperatureºC≤55Amount of used waterm3/h709TransformerRater capacityKVA3200Primary voltagekV35Secondary voltageV180-120Secondary currentA10264Cooling typeOFWF10Power supply systemHigh voltagekV35Low voltageVAC380
AC220
DC242,LF-15t Ladle refining furnace quotationNo.DescriptionQTY(set)1Ladle car12Ladle(without hanger, sliding gate)13Heating bridge frame and guide device14Water cooling cover(without lining)15Electrode lifting device(include conductive arm)16High current line system(include water cooling cable)17Cooling water system18Furnace cover lifting device19Argon system110Hydraulic system111High voltage switch cabinet(35KV)112PLC automation control system and low voltage control cabinet113Transformer 3600KVA/35KV1Total: USD283340 FOB Shanghai3. Self-provide parts by customer
3.1 Electrode and its connector;
3.2 Ladle hanger and sliding gate;
3.3 Refractory material and making lining;
3.4 Hydraulic system working media (water-glycol),water,compressed air and argon.
3.5 Civil engineering, and the track of ladle car,pre-lay unit and screw of equipment's foundation;
3.6 The connecting pipes and lines for hydraulic oil,cooling water,argon and electric;
3.7 To import high voltage power supply to the input terminal of high voltage switch cabinet and furnace transformer by cable or copper plate, to buy,lay and test the connecting cable (copper plate), it will be borne by the buyer.
3.8 To import low voltage power supply to the input terminal of low voltage control cabinet, and ensure that its phase rotation and ground protection are correct, as well as the connecting lines that between the control cabinets and from the output terminal of control cabinet to the connection point of the equipment, it will be borne by the buyer.4. Customer service: 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).5. Team of payment: 40% advance payment by T/T, 60% balance payment by T/T before date of shipment.