发明名称 |
SLAG COATING METHOD OF CONVERTER |
摘要 |
PURPOSE:To prolong the furnace life and also to decrease the suspension time of a furnace and the consumption of a slag modifying agent or the like by coating the residual slag in a converter on the inside wall surface of the converter and thereafter cooling forcedly the above-mentioned coating layer. CONSTITUTION:After the tapping of a converter 3 executed with a refractory 2, a modifying agent such as dolomite is added to the residual slag 4 in the inside of the converter 3 and a slag coating layer 6 is formed on an inside wall surface 7 by blowing gas such as Ar and N2 into the converter from the tuyeres 5 and dissipating the slga 4. Thereafter a forced-cooling lance 9 which is provided with plural pieces of liquid spray nozzles 10a-10f to a tip part 8 of a cylindrical body is vertically hung in the converter 3 freely movably up and down and for example, water as liquid is fed to the lance 9 via a pressure-feed installation and the dissipation is performed through the tip part 8 to cool forcedly the slag coating layer 6. By such a method, the strengthened coating layer 6 can be formed and the wear of the refractory 2 is inhibited and the prolongation of the life of furnace body can be achieved. |
申请公布号 |
JPS61157610(A) |
申请公布日期 |
1986.07.17 |
申请号 |
JP19840279712 |
申请日期 |
1984.12.28 |
申请人 |
NIPPON STEEL CORP;KONDO GOKIN KIKAI:KK |
发明人 |
GONDO UICHI;TAKAHASHI TOSHIAKI;TOKUNAGA TSUNEO;IIO TAKUJI;KOIKE YOSHIYUKI;KONDO YOICHI |
分类号 |
C21C5/36;C21C5/44;(IPC1-7):C21C5/44 |
主分类号 |
C21C5/36 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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