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为了满足对优质钢的需求,日本钢铁工业大大地改进了炼钢工艺,即改革精炼方法和提高连铸比。转炉使用预处理铁水便是其中一项技术措施。转炉只用来脱碳和提高温度,可进行少渣炼钢,从而降低生产成本和提高钢的质量。 Kakogawa钢厂铁水预处理的方法是:在高炉出铁场,用氧化铁皮、CaF_2进行一次脱硅,氧化铁皮耗量为20kg/t生铁,CaF_2耗量为0.5kg/t生铁;接着利用鱼雷罐车,使用氧化铁皮进行二次脱硅,其耗量为15—20kg/t生铁,氮气作为载流气体,耗量为400Nm~3/h,喷吹速度为330—350kg/min;最后,利用鱼雷罐车,用
In order to meet the demand for high-quality steel, the Japanese steel industry has greatly improved the steelmaking process by reforming the refining method and increasing the continuous casting ratio. Converter pretreatment of hot metal is one of the technical measures. Converter only used to decarburization and increase the temperature, can be less slag steel, thereby reducing production costs and improve the quality of steel. Kakogawa steel mill pretreatment of hot metal is: blast furnace in the ironworks, with a scale, CaF_2 for a desiliconization, the oxide scale consumption of 20kg / t pig iron, CaF_2 consumption of 0.5kg / t pig iron; followed by torpedo tanker , The use of iron oxide skin secondary desilication, the consumption of 15-20kg / t pig iron, nitrogen as the carrier gas, consumption of 400Nm ~ 3 / h, the injection speed of 330-350kg / min; Finally, the use of torpedoes Tanker, used