Metal production
EAF-ELECTRIC ARC FURNACE - 50 TON & TRANSFORMER
Ref. No.:EAF090801
YEAR:1974-2002
Brand:DEMAG, ABB
Qty:1 Second-hand Electric Arc Furnace
Built:1990 Load cycle
Specification
| Description | EAF-ELECTRIC ARC FURNACE - 50 TON & TRANSFORMER |
| Ref. No. | EAF090801 |
| Year | 1974-2002 |
| Brand | DEMAG, ABB |
| 1. Qty. 1 Second-hand Electric Arc Furnace | |
1974 The original EAF was build in 1974 by Mannesmann Demag as a 30 t tapping weight furnace. | |
1983 Revamp of the upper shell to water cooled panels and larger diameter (4,6 m), siphon type tapping | |
| 1990 Installation of water cooled roof (panel design) | |
1992 Installation of 37/44,4 MVA ABB Transformer, Reactor and ABB Electrode Regulation System | |
| (increase of voltage from 400 to 670 V sec., 50 Hz) | |
| 1996/97 Complete revamp of transformer 2002 Last year of operation | |
| - UHP EAF – siphon type (1983), Demag - Tapping weight 45 – 50 ton | |
| - EAF diameter (upper shell) – 4,600 mm - Interlockings | |
- Electrode regulator electro-hydraulic, ABB with EMG valves - Air blast circuit breaker, AEG | |
| - Water cooled upper shell - Split shell type | |
| - Water cooled roof - Movement system – hydraulic | |
| - Tilting cylinders - Electrode cylinders, arms, clamping devices & their cylinders | |
| - Roof rotation cylinder - Roof supproting arms | |
| - Qty. 6 Power supply brass tubes - Off gas system elbow | |
| - Qty. 5 buckets | |
| 2. Second-hand Reactor & Transformer | |
| - Reactor | |
| - Transformer – ABB 37/44,4 MVA, primary voltage 15 kV, Type | KDOR37 000/17.5 |
| Built | 1990 Load cycle |
| ITEM 1 | |
| Theoretical (WP) Production Values EAF 1 | |
| Tapping weight 45 t | |
| El. Energy Cons. (incl. burner) 450 kWh/t | |
| Power-On Time 41,2 min/heat | |
| Power-Off Time 22,0 min/heat | |
| Charging (4 baskets) 10,0 min/heat | |
| Tapping 4,0 min/heat | |
| Preparation 2,0 min/heat | |
| Delays 6,0 min/heat | |
| Tap to Tap Time 63,2 min/heat | |
| Available parts | |
| Tilting cylinders Electrode cylinders, arms, clamping devices and their cylinders | |
| Interlockings Roof rotation cylinder | |
| Roof supporting arms 6 power supply brass tubes | |
| Upper shell Water cooled roof Off gas system elbow | |
| Missing parts | |
| Hydraulic center | 2 soap oil pumps, 3 electrode movement oil valves, compressor for movements (roof, tilting) Regulation unit 6 high current cables |
| Accessories available | |
| 5 buckets | |
| Missing parts | |
| Hydraulic center | 2 soap oil pumps 3 electrode mvement oil valves |
| Compressor for movements (roof, tilting) Regulation unit 6 high current cables |