Metal production
ELECTRIC ARC FURNACE - 70 T - 25 MVA - 25 T/H
Ref. No.:EAF200601
Brand:ZL KLADNO
Qty:1 Second-hand Electric Arc Furnace
Specification
| Description | ELECTRIC ARC FURNACE - 70 T - 25 MVA - 25 T/H |
| Ref. No. | EAF200601 |
| Year | |
| Brand | ZL KLADNO |
| Qty. 1 Second-hand Electric Arc Furnace | |
| Mfc. | ZL Kladno Capacity |
| Power input | max. 25 MVA Average |
| Kind of scrap | External scrap Internal scrap (rest from forge and foundry) |
| Internal scrap - turnings (rest from machinery) Iron Ore | |
| Tap-to-Tap time | 150 min Power ON |
| Burner/Jet | 4 x JetBox PTI - USA (4x supersonic lance, include 2x carbon injection) |
| Oxygen consumption | 45 m³/t Natural gas consumption |
| Coke injected consumption | 20 kg/min Coke charge consumption |
| Lime charge consumption | 35 - 45 kg/t Limestone charge consumption |
| Dolomite charge consumption | 12 kg/t Basket capacity max. |
| Water-cooled panels + roof Tapping design | RBT - round bottom tapping |
| Type of refractory | MC Type of sliding gate |
| Shell diameter | 4450 mm (5300 mm - without refractory) |
| Electric energy consumption | 400 kWh/t |
| Electrode consumption | 2.5 – 3.5 kg/t - Electrode diameter 500 mm |
| Argon blowing system | three porous plug ( N2 + Ar ) |
| Dust collection/off gas system | primary 60 000 Nm³/hour Secondary 300 000 Nm³/hour |
| Annual capacity | 130 000 t Annual production (2017) |
| Steel grades | Carbon steel Alloy steel Stainless steel |
| THREE - PHASE TRANSFORMER | |
| Mfc. | ETD TRANSFORMATORS A.S. Built |
| Type | YR33E-4 - IEC 76 Rated power |
| Connection | YIII Cooling |
| Total weight | 88.6 T Transport with oil |
| Table of nominal values of the transformer | |
| Section Rated Rated Rated Rated 1 2 3 4 5 | |
Volt. Amps Volt. Amps short-circuit voltage uk [%] for the connected | |
| kV V choke tap | |
| 1 1050 852 27.12/√3 39.5 34.2 28.8 20.8 7.8 | |
| 2 1050 811 28.48/√3 40.4 35.1 29.8 21.8 8.8 | |
| 3 1050 774 29.85/√3 41.5 36.2 30.9 22.9 9.9 | |
| 4 1050 740 31.21/√3 42.7 37.4 32.1 24.1 11.1 | |
| 5 1050 709 32.58/√3 44.0 38.7 33.3 25.3 12.3 | |
| 6 1021 680 33/√3 44.1 38.9 33.7 26.0 13.3 | |
| 7 981 654 33/√3 43.7 38.8 33.8 26.3 14.2 | |
| 8 22 945 630 33/√3 43.5 38.8 33.9 26.7 15.0 | |
| 9 911 607 33/√3 43.3 38.7 34.1 27.1 15.8 | |
| 10 879 586 33/√3 43.2 38.7 34.3 27.6 16.7 | |
| 11 850 567 33/√3 43.1 38.8 34.5 28.0 17.5 | |
| 12 822 548 33/√3 43.2 39.0 34.8 28.6 18.4 | |
| 13 797 531 33/√3 43.2 39.2 35.2 29.1 19.2 | |
| 14 722 515 33/√3 43.4 39.5 35.6 29.7 201 | |
| 15 750 500 33/√3 43.6 39.8 36.0 30.3 21.0 |