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 |