Analysis of Hard Breaking Accident of New Roasted Electrode in 25000KVA Ferrosilicon Submerged Arc F
Analysis of Hard Breaking Accident of New Roasted Electrode in 25000KVA Ferrosilicon Submerged Arc FurnaceThe electrode hard-breaking accident mainly occurs du
Analysis of Hard Breaking Accident of New Roasted Electrode in 25000KVA Ferrosilicon Submerged Arc Furnace
The electrode hard-breaking accident mainly occurs during the feeding process after the electrode is baked. Electrode hard-breaking accidents are generally concentrated in voltage level 15-17, voltage between 160-175V, electrode current 65-75KA, electric furnace power 16-17.5MW, hard-breaking length is generally 1.3-1.6 meters, which brings about the opening of the furnace. It is very hemp, and it also brings great difficulties to the determination of the time for the first batch of iron. Once the determination is inaccurate, it will cause a full ladle of molten iron or difficulty in tapping the first furnace.
When the electrode paste changes from solid to liquid, the mechanical strength drops to the lowest point when the temperature reaches 400 degrees Celsius. From 400 degrees Celsius to 700 degrees Celsius, the mechanical strength rises sharply, and the volatiles in the electrode paste begin to escape in large quantities from 400 degrees Celsius, and the strongest is at 500 degrees Celsius. When the electrode firing is included in the third stage at about 700 degrees Celsius, the remaining volatiles volatilize again here. When the temperature reaches 750 degrees Celsius, the electrode binder begins to carbonize. When the temperature reaches 800 degrees Celsius, the electrode baking ends and the electrode reaches the final strength. Even if the temperature reaches 1200 degrees Celsius, the electrode strength will not change much.
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Article Tags:
Roasted Electrode
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