爐型設計

1、1.表1.1所列為本設計的產(chǎn)品大綱2轉(zhuǎn)爐爐型設計及計算2.1轉(zhuǎn)爐車間的生產(chǎn)能力計算2.1.1轉(zhuǎn)爐容量和座數(shù)的確定選擇2座轉(zhuǎn)爐，采用二吹二模式。2.1.2計算年出鋼爐數(shù)設：年出鋼爐數(shù)為N本次設計的是年產(chǎn)550萬噸合格鑄坯的轉(zhuǎn)爐煉鋼車間，通過計算得出鋼包鋼水為5501.1＝605萬噸化學成分(%)鋼種代表鋼號CSiMnPS產(chǎn)量(萬噸)產(chǎn)量比例Q215B0.090.150.3?0.250.550.045?0.045?Q235A0.140.22

2、0.3?0.350.650.045?0.050?碳素結(jié)構鋼Q255A0.180.280.30?0.50~0.700.045?0.045?19235%Q295B0.16?0.55?0.801.50.040?0.040?Q390A0.2?0.55?1.01.70.045?0.045?低合金鋼Q345D0.18?0.55?1.01.70.045?0.045?16530%20Mn20.170.240.170.371.41.80.035?0.03

3、5?50Mn20.420.490.170.371.41.80.035?0.035?合金結(jié)構鋼35SiMn0.320.41.11.41.11.4≤0.035≤0.03513825%GCr150.951.050.150.350.250.450.025?0.025?G20CrMo0.170.230.20.350.650.950.03?0.03?軸承鋼G4Mo4V0.750.850.35?0.35?0.027?0.02?5510%K：比例系數(shù)，

4、1.50；(2)熔池深度h。熔池深度指轉(zhuǎn)爐熔池在平靜狀態(tài)時，從金屬液面到爐底的深度。V池===37.14m3.鋼水鋼水ρm0.7260h==1.64m.89.2817.10047.6790.0047.6046.0D790.0D046.02323???????池池池VVV2.2.2.2爐帽尺寸的確定確保其穩(wěn)定性，便于兌鋼水和加廢鋼，減少熱損失，避免出鋼時鋼渣混出或從爐口流出，減少噴濺。①爐帽傾角θ：大型轉(zhuǎn)爐選下限，取θ=600。②爐口直徑

5、d0：d0=45%D=45%6.047=2.72m=2720mm③爐帽高度H帽：H帽=（D－d0）0＋H口=（6047－2720）2160tan21＋300=2881.27300=3181.2760tan④爐帽體積V帽：V帽=(H帽－H口)(D2＋Dd0＋d02)＋d02H口12π4π=(3181.27－300)(6.04726.0472.722.722)12?=45.57m2.2.2.3爐身尺寸的確定爐身為圓筒形，對于爐襯無加厚段的轉(zhuǎn)