Lid removal and melting equipment using the lid removal

Abstract

【Problem】To efficiently add a metal wire to the molten metal with the inside of the ladle in a positive pressure state. 【Solution】The ladle lid 1 of the present invention includes a lid body 20 that airtightly closes the opening 5a with respect to the ladle 5 containing the molten metal, a wire supply unit 17 that penetrates the lid body 20 in the vertical direction to supply the Mg wire to the molten metal, and an exhaust unit 27 that discharges the fumes generated by supplying the Mg wire to the molten metal to the outside of the ladle. The exhaust unit includes a ventilation pipe 28 that penetrates the lid body 20 in the vertical direction and has an upper end protruding upward, a closing plate portion 29 that closes the upper end of the ventilation pipe 28, a closing position CP where the upper end of the ventilation pipe 28 is closed by the closing plate portion 29, an open position OP where the closing plate portion 29 is separated upward from the upper end of the ventilation pipe 28 to allow fume flow, guiding means 30 for guiding the closing plate portion 29 between the upper and lower positions, and a load adjusting portion 31 provided on the closing plate portion 29 for attaching loads of different weights. 【Selected Drawing】Figure 5

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