Melt Shop - (2) 45 Ton EAF, Ladle Furnace, & More

MELT SHOP - MAIN EQUIPMENT REFERENCE

Products and steel grades:                                                                                              

-Low-carbon:         yes                                        

-Medium-carbon: yes                                                

-High-carbon:   yes                                        

-Alloyed:          yes                                        

Scrap Yard:                                     

-Storage area:  35,000 T                                             

-Internal railroads:   Yes                                                                     

Bucket Charge:                                                      

-Charging area:                                              

-Buckets:         2 + 2 Spares                                                  

-BVolume:          800 cu Ft.                                          

-Charged by:   2 x locomotive cranes w/magnet                  

-Transfer:         2 scrap cars with scales                                                        

Electric Arc Furnace:    Lectromelt                                                                        

-Number of Electric Arc Furnaces (EAF): 2

-Furnace Type: Spout Tap

-Tap to Tap Time: 120 minutes

-Average Steel Heat Size: 41 metric ton

-Sidewall Refractory Panel: Water Cooled

-Roof Refractory Panel: Water Cooled

-Oxy-Fuel Burners: Yes

-Shell Diameter: 4.6 meters

-Transformer Capacity: 27 MVA.                                                    

-Electrode Diameter: 450 mm (18 inch)

-Charge Materials: 100 % Ferrous Scrap

-Energy Consumption: 521 kWh/metric tap ton

-Approximate Furnace Volume to Top of Side Panel: 22.65 cubic meters                               

Ladle Furnace:  Mannesmann Demag                                                      

-Start-up/last revamp: 1997                                                   

-Ladle Transfer:    crane, ladle car                                                    

-Electrodes:          12"                             

-Transformer:        Westinghouse                                           

-Power:                 20 MVA                                        

-Input:                   13.8 KV                                        

-Output:                 154V - 350V / 6 taps                                            

-Stirrer:                  Argon / Nitrogen - purous plug                

Ladles:                                                 

-Number:              9 Engineering steel                                   

-Ladle heaters and dryers:                                                     

-3 heaters - 6M BTU (natural gas)                                                                            

-2 dryers - 6M BTU (natural gas)           

Degasser                                                                   

Continuous Caster: N/A                                  

Alloy System:                                   

-to buckets:          lime                                   

-to EAF:               Foamy Carbon, Dolostone                                  

-to ladles @ EAF:                     by alloy charge car                                                  

-to ladle @ LF & VAD:                 by hopper & wire feed                                          

Storage:                                               

-Dolostone:          158T                                  

-Lime:                   40T                                   

-LF Bins:              113T                                  

-VAD Bins:           19T                                                                 

-EAF Bins:        205T