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Production practice of galvanized vertical reduction annealing furnace was introduced. The furnace wall brick off and zinc plating layer leakage were effectively solved through reasonable adjustments to air coal ratio, optimization control of furnace temperature, reasonable control of the production rhythm, use of nitrogen purification station，the calorific value stability control and so on. The problem of roller surface nodular was ameliorated; the number of open furnace was greatly reduced; the amount of waste of the abnormal boiler stop was avoided; the using cycle of annealing furnace was extended; all technical and economic indexes of annealing furnace reach a new level, and therefore provide the safeguard for the continuous and stable operation of galvanized units.
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