Quick refining process for LF (ladle furnace)
The invention discloses a quick refining process for an LF (ladle furnace), and relates to the technical field of ladle refining. The invention aims to provide a quick refining process for an LF, which has the advantage of short refining time, and can effectively improve the quality of molten steel...
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Main Authors | , , , , |
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Format | Patent |
Language | Chinese English |
Published |
11.05.2011
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Subjects | |
Online Access | Get full text |
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Summary: | The invention discloses a quick refining process for an LF (ladle furnace), and relates to the technical field of ladle refining. The invention aims to provide a quick refining process for an LF, which has the advantage of short refining time, and can effectively improve the quality of molten steel and stabilize the composition of molten steel. The quick refining process for an LF comprises the following steps: A. deoxidizing steel discharged from a converter; B. in the converter steel discharging process, washing slag, and adding molten steel into a refining ladle; C. pouring 0.5-1.5t of 2.5-3t of residual steel slag from the previous furnace steel subjected to continuous casting onto a slag pan, and pouring the rest steel slag into the refining ladle of the LF; and D. moving the refining ladle to a refining position, feeding 0.5-0.7kg of aluminum wire to every one ton of molten steel while blowing argon at a low rate of 20-50 NL/minute, adding 4.4-6.0kg of lime to every one ton of molten steel for 1.5-3 min |
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Bibliography: | Application Number: CN2011124048 |