Fast refining process of continuous casting liquid steel
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摘要: 通過在吹Ar合金微調站加入Al脫氧和SiCa對夾雜物變性,選擇合適的造渣劑CaO-SiO2-CaC2以及軟吹Ar工藝,可以在不影響連鑄機匹配的條件下(18min內)使鋼水中活度氧降低到20×10-6以下,渣中的FeO+MnO<3%,而連鑄澆注時不會發生水口堵塞現象.滿足了馬鞍山鋼鐵公司第三鋼軋總廠從美國新引進的使用油潤滑澆鑄的小異形坯連鑄機對鋼水質量和生產匹配的要求.Abstract: Liquid steel for continuous casting was refined quickly at the alloy conditioning station in Masteel with the mixture of CaO-SiO2-CaC2 to slag and Al, SiCa to deoxidize in the period of 18 min (converter match to cast). The activity of oxygen in liquid steel can be decreased less than 20×10-6 and FeO+MnO<3% in the final slag, which meets the needs of shaped block cast machine that lubricates with oil.
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Key words:
- refining /
- deoxidizing /
- nozzle clogging /
- liquid steel
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