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Causes and classification of hot slots

2009-03-14View Original

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① Improper process control causes the bath temperature to rise, resulting in a general hot bath. Mainly by adjusting technical conditions. For example, appropriately reduce the molecular ratio, lower the set voltage, reduce the amount of aluminum output, etc. ② The heat tank is caused by unreasonable control of technical conditions, such as the molecular ratio is too high, the voltage is kept too low, etc. As long as the technical conditions are corrected, the tank temperature will return to normal in a few days. ③ The tank condition is not good, needle vibration occurs, and the voltage remains high for a long time, which is caused by the hot tank. Analyze and identify the cause of needle vibration due to poor tank conditions. After handling the needle vibration, gradually reduce the voltage. ④ Thermal sink caused by voltmeter error. Calibrate the voltmeter to eliminate errors ; Then treat it as a general hot tank, mainly adjusting the technical conditions. ⑤ Hot bath caused by low aluminum level in the bath. Measure the two horizontal heights and check the internal shape and sedimentation of the furnace ; Reduce the amount of aluminum produced or terminate aluminum production for one day. ⑥ Hot sink caused by anode tilt. Check the degree of anode tilt ; Report to the relevant department or workshop for anode adjustment ; Treat it as a normal hot tub. ⑦ The anode has a long package or a thermal groove formed by surrounding teeth. Raise the anode so that the protruding part of the anode bottom palm is separated from the aluminum liquid ; Inspect possible anode long packages by measurement and visual inspection ; If the overhang is severe, the long overhang of the anode must be removed. ; Then treat it as a normal hot tank. ⑧ The electrolyte contains a lot of carbon, which causes the electrolyte resistance to be high and causes the electrolytic cell to heat up to a certain extent.

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