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Ladle Refining Furnace- Typical Water Cooled Roof



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Product Description

Ladle Refining Furnace- Typical Water Cooled Roof


By allowing the Steel Melting Furnace to be used exclusively as basic melting units, productivity and lining life increase significantly due to absence of refining process and lower tapping temperature. Further, LRF's allow flexible schedulign between availability of caster and readiness of molten steel from the Furnace. The estimated cycle time and heating rate for secondary treatment are give below.

Ladle Positioning on Ladle Car
1.0 min
ladle Car Positioning under Roof
1.0 min
Roof Lowering on ladle
1.5 min
Temperature & Sampling (manual)
2.0 min
Alloy and flux addition (depending on steel grade)
5.0 min
Temperature rise time
20.0 min
Wire feeding, if any
3.0 min
Final temperature and sampling (manual)
2.0 min
Final adjustment, etc. (if required)
2.0 min
Roof raising
0.5 min
Ladle Car Positining out of LRF area
1.0 min
Ladle Lifting from Ladle Car
1.0 min
Total Cycle Time
40.0 min
Heating Rate (Typical)
4 to 50C/min.

Typical LRF Rating:
Capacity
12 Ton
15 Ton
20 Ton
25 Ton
30 Ton
Transformer
2.5 MVA
3.0 MVA 4.0 MVA 5.0 MVA 6 MVA
Electrode Diameter (mm)
200
200
200
250
300
PCD (mm)
410
410
410
550
600

Product Code : 10

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