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Specifications |
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| MINI MILL GENERAL DATA: Hot Strip Capacity : 2.0 millions TPY Heat Size : 130t(Max.150t) SteelGrades : Structural Steels Line Pipe Steels CR Steels Product : HR Coil Size w 800~1350mm T 1.0~12.7mm Weight : 18~24tons EAF(Electric Arc Furnace) TWIN VESSEL Quantity : Two Type : DC Twin Vessels : Mono Power Source Scrap Preheating ( Post Combustion System) Heat Size : 130 ton/heat (max.150) Tap To Tap Time : 50 min/ heat (55 min/heat : 100% Scrap Avg. Change/Day : 48 charge/day Furnace: Diameter : 7,000 mm Ű Height : 5,720 mm Volume : 123 m3 Hot Heel : 39 TON(Max.45) Scrap Mix Scrap : 60%(inc. HBI 20%) Hot Metal : 40% Scrap Pre-Heating : By P.C. System P.C. lance/B.injector Wall & Sump Burner Top Electrode : Diameter 28Inch Bottom Electrode : Water Cooled Billet Type (2 EA) Stirring Type : Bottom Tuyere( 2EA) Tilting System : Hydraulic Unit Deslagging : 30 Degree Tapping(EBT) : 10 Degree Off Gas Evacuation Main Fan : 29,400 m/min Direct Evacuation 7,000m/min FURNACE TR Rated Power : 51MVA x 2 Rated Voltage : 22Kv/ 722 V Secondary Tap Voltage Consisting Rating : 741 V-722V (51 MVA) Constant Current : 722 V- 591 V (50KA) Rectifier : 25KA x 4 SECONDARY REFINING Ladle Furnace: Type : Roof/Electrode Swing (2 Station) Heat Size : 130 ton/ heat (Max.150) Cycle Time 37 min (Power on: 30 min) Heating Rate : 4șC/min Free Board : 1,050 mm ( at 150 ton/Ht) Electrode Diameter : 16 Inch .PCD : 1,000 mm .Current Density : 31 A/cm2 -Ca-Wire Feeder : 2 Set Sampling Equipment : 2 Set -Ar Bubbling : Ladle Bottom Bubbling .Ar Coupling Type : Auto, Vertical Type Off Gas Evacuation : 1,300m3/min TR Capacity : 22 MVA (AC) Rated Current : 40KA Rated Voltage : 310 V VACUUM TANK DEGASSER Type : VTD-OB Heat Size : 130 ton/heat (Max. 150) Cycle Time : 80 min ( Vacuum Treat : 68 min) Free Board : 1,050mm (at 150 Ton/Heat) Vacuum Pump : 3 Stage Steam ejectors And 3 water ring pumps Vacuum Degree : Max 0.5 Torr Inline bag filter : Gas cooler + Vacuum filter Decarburization : [ C] < 0.005 % , DDQ Grade (02 Blowing / Boiling 02 Lance flow rate : Max.1,500 m3/h -Ca-Wire Feeder : 1 Set, each -Sampling equipment : 1 Set, each (Vacuum Tight) -Ar Bubbling : Ladle Bottom Bubblin .Ar Coupling Type : Auto, Vertical Type -Gas analyzer(CO,CO2,02,N2 Ar,H2,He) : 1Set, each CASTER: Machine Strand : 2 Machine- 2 Strand Oscillator : Hydraulic Servo valve Tundish Capacity : 30 ton(Max 33 ton) Mold Type : Straight Parallel Thickness : 100 mm Caster Type : Vertical Bending Mold Level Control : ECLM(Eddy Current Level Meter) (Gamma ray) Casting Speed : Max. 5m/min Liquid Core Reduction : Segment #0(100-80mm) Slab Thickness : 80mm Slab Temperature : 950~ 1,050 șC EMBR : Segment #0~#7 Dummy Bar : Bottom Feeding Metallurgical Length : 13.9m Cooling System : Air- Mist Spray 2.0 l/kg Width Adjusting range Casting : 2~20mm/min Unloaded : 200 mm/min L/D~ T/D Sealing Method : Ar Box SLAB HEATING & HANDLING FACILITY: Pendulum Shear Slab Thickness : 80~100mm Cut Temperature : Min 825 șC Scrap Length : Max 1,000 mm Heat Holding Furnace Length : 30m Fuel/Burner : City gas/Regenerative Inside Temperature : 1200 șC Edger Draft Per Pass : Max 35 mm Net Width Reduction : Max 15 mm Reduction Scale Breaker Pressure : 50~90 bar Type : Oscillation Reduction Mill Stands : 2Hi-1Stand & 4Hi-2 Stand Bar thickness : 15~30 mm Power : RU2~m: 2,000Kw Coil Extractor : 1 set/ Strand Incuctive Heater Exit Slab Temperature : 1,120 șC Inductive Coil : 16ea/ Strand Capacity : 28.5 MW Coiling Station Coiling Speed : Max 60 mpm Bending Roller : 3 set/ Strand Cradle Roller : 2 set/ Strand Coil Cross Transfer : 3 Set Holding Furnace Fuel : City Gas Inside Temperature : 1,100 șC Burner Type : Regenerative Holding Capacity : 8 coil Uncoiling Station : 1 Set FINISHING MILL: Leveller : 1 Set Crop Shear : Rotary Drum Type Temperature : 800~1,080 șC Thickness : Max 30 mm Scrap Bucket : 2 Set Finishing Scale Breaker Pressure : 300 Kg/cm2 Pump Type : Centrifugal Accumulator : Pneumatic & Bladder Impact Pressure : 19.5 Kg/cm2 Header : 2-Header & Rotary Finishing Mill Stands : 4Hi-5Stand Power(KW) : F1~4 : 6000 F5 : 4000 Pair Cross : F1~4 On-Line Roll Grinder : F4~5 Auto Gauge Control : F1~5 Roll Changing Method : Buggy Type Run Out Table Top/ Bottom N/Z type : Multi Orifice / Full Corn Spray Bank Quantity : 8 bank Downcoiler Quantity : 2 Set Type : 3-Unit Roll & Fixed Skin Pass Mill : 1 Set Roll Shop : 1 Set | |
