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本文结合生产研究了鞍钢碱性平爐冶炼重轨和无缝等碳素镇静钢的锰制度.研究结果指出:就上述鋼种而言,熔炼过程中的锰制度对钢中氧、硫含量以及轧制的成品質量並没有实际影响,换句话说,并没有必要规定熔池含锰量高於一定水平(>0.15—0.2%Mn).相反地,熔池含锰较高或在熔炼过程中加入锰铁均使降碳速度趋於缓慢,从而延长了熔炼时间.因此,只要高炉铁水中含硫量能够合乎规定,用低锰生铁作原料对炼钢並无害处.通过高爐生产数据分析,说明在鞍钢的操作条件下完全有可能生产含锰低而含硫合乎上述规定的铁水,应该认为用低锰生鉄冶炼重轨和无缝类型的优質鋼是切实可行的.
In this paper, the author studied the manganese system of heavy-rail and seamless carbon-killed steel, such as the basic hearth smelting in Anshan Iron and Steel Co., Ltd. The results show that the manganese content in the steel during the smelting process affects the content of oxygen and sulfur in the steel, In other words, there is no need to specify that the bath has a manganese content above a certain level (> 0.15-0.2% Mn). On the contrary, the bath contains a higher manganese content or is added during the smelting process Ferromanganese both slow down the rate of carbon reduction, thus extending the melting time.Therefore, as long as the sulfur content in blast furnace hot metal can be regulated, using low manganese pig iron as raw material is not harmful to the steelmaking.Black production data analysis shows that It is entirely possible to produce hot metal containing low levels of sulfur and sulfur in compliance with the above regulations under the operating conditions of Anshan Iron and Steel Company. It should be considered feasible to smelt the heavy and heavy steel of the heavy rail and seamless type with low manganese briquettes.