The upper layer of the paste column melts
1. Section status: the section is loose and hollow, and the partial section is flat.
2. Other phenomena: After observing that the upper layer of the paste column melted into a paste, the time of electrode disconnection was pushed to this point and the paste addition time had stopped the furnace. The difference between the segregation of the broken electrode and the electrode paste lies in the normal fluidity of the electrode paste itself.
3. Reason analysis: The thermal conductivity of the raw materials used in the electrode paste of the large-scale submerged arc furnace is high, and the upper layer of the paste column is easy to melt. When the furnace is shut down for a long time, the upper layer of the molten electrode paste solidifies for the second time. If the electrode paste is not added in time, The electrode sintering process is interrupted, and the popularity of the electrode paste here becomes worse after the second heating, and the electrode strength is too low, causing the electrode to hardly break.
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