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本文叙述首钢5吨底吹氧气转炉喷石灰粉吹炼低磷铁的工艺,分析其冶金效果.底吹氧气转炉喷石灰粉炼钢,具有脱碳、脱磷同时进行和较顶吹氧气转炉有较高的余锰含量、更高的脱硫效率、更大的供氧强度和较低的渣中(FeO)含量等冶金优点.由顶吹氧气转炉炉身改造的5吨底吹氧气转炉,已取得与同车间同吨位顶吹氧气转炉相当的炉令.载粉吹氧的氧枪单位消耗为1.65毫米/炉.钢铁料消耗为1126公斤/吨钢,金属收得率为92.5%,比顶吹高2%.底吹氧气转炉喷石灰粉炼钢,因供氧方式影响了氧化机理、反应速度和反应接近平衡的程度,所以与不喷粉的底吹氧气转炉炼钢,以及顶吹氧气转炉炼钢有不同的冶金特性.
This paper describes the Shougang 5 ton bottom blowing oxygen blast furnace blasting of low phosphorus iron process, analysis of its metallurgical effect. Bottom blowing oxygen blast furnace blast furnace steel, with decarburization, dephosphorization at the same time and the top of the oxygen converter has Higher metallurgical benefits such as higher manganese content, higher desulfurization efficiency, greater oxygen supply and lower slag (FeO) content, etc. The 5 ton bottom blowing oxygen converter, modified from the top blowing oxygen converter shaft, has been Obtained with the workshop with the tonnage of top-blown oxygen converter equivalent furnace load oxygen lance oxygen lance unit consumption of 1.65 mm / furnace steel material consumption of 1126 kg / ton of steel, metal recovery rate of 92.5% than the top Blowing high 2%. Bottom blowing oxygen blast furnace blast furnace steel, due to oxygen affect the oxidation mechanism, the reaction rate and the reaction is close to the level of equilibrium, so do not dusting bottom blowing oxygen converter steelmaking, and top blowing oxygen Converter steelmaking has different metallurgical properties.