Method for quickly reducing height of converter bottom
A converter bottom and high technology, applied in the direction of manufacturing converters, etc., can solve the problems of the influence of the slag splashing process, the difficult control of the oxygen lance position, and the large fluctuation of the metal liquid level, so as to avoid safety production accidents and increase the soaking erosion time. , The effect of reducing the height of the furnace bottom
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[0026] Example 1
[0027] A method for quickly reducing the height of the bottom of a converter includes the following steps:
[0028] 1) Measure the height of the furnace bottom
[0029] After the furnace is tapped, the slag in the furnace is emptied, and the height of the furnace bottom is measured with a laser thickness gauge. The height of the furnace bottom is "0mm" when the furnace is opened as the reference, where "0mm" refers to the nozzle distance of the oxygen lance The molten pool metal level is 1000mm; the measured furnace bottom height +200mm, that is, the distance between the oxygen lance nozzle and the molten pool metal level is 800mm;
[0030] 2) Add molten iron
[0031] Add 800kg of molten iron into the converter;
[0032] 3) Oxygen blowing operation
[0033] Control oxygen flow 12000m 3 / h, the oxygen lance position is set to 2000mm. Press the button of "Blowing down the gun", the oxygen gun will automatically drop to 2000mm and start oxygen, the oxygen blowing time is...
Example Embodiment
[0042] Example 2
[0043] A method for quickly reducing the height of the bottom of a converter includes the following steps:
[0044] 1) Measure the height of the furnace bottom
[0045] After the furnace is tapped, the slag in the furnace is turned over, and the height of the furnace bottom is measured with a laser thickness gauge. The height of the furnace bottom is "0mm" when the new furnace is opened as the benchmark, and the measured furnace bottom height is +400mm;
[0046] 2) Add molten iron
[0047] Add 1000kg of molten iron into the converter;
[0048] 3) Oxygen blowing operation
[0049] Control oxygen flow 13000m 3 / h, the position of the oxygen lance is set to 2000mm, press the button "lower lance blowing", the oxygen lance will automatically drop to 2000mm and open oxygen, the cumulative amount of oxygen reaches 200m 3 When, press and hold the "Oxygen Lance Up" button to increase the position of the oxygen lance to 2200mm, and the cumulative amount of oxygen reaches 600m 3 W...
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