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LD吹炼法LD吹炼法系根据奥地利具体情况在缺乏废钢增产产钢量的条件下创造和发展起来的,已如前述。voest钢厂高炉供给顶吹转炉的铁水成份是:C3.8～4.2%,Si 0.6～1.3%,Mn 1.4～2.2%,P 0.120～0.250%,S<0.045%,高炉炼出的生铁的含硫量在0.080～0.100%之间,经过炉外脱硫处理,生铁含硫量降低到0.045%以下。该厂由于高炉铁矿石种类繁多,使生铁成份波动范围很大,更由于转炉炼钢的热源只靠生铁中元素的化学热而来,因此就必须装设混铁炉用以匀均生铁的成份,为炼钢创造有利条件。生铁的含矽量直接影响到废钢的使用量,图7表
LD blowing method LD blowing method according to the specific situation in Austria in the absence of steel production increased production of scrap under the conditions created, as described above. The quality of hot metal supplied to the blast furnace by voest steel blast furnace is: C3.8 ~ 4.2%, Si 0.6 ~ 1.3%, Mn 1.4 ~ 2.2%, P 0.120 ~ 0.250%, S <0.045% Sulfur content between 0.080 ~ 0.100%, after desulfurization outside the furnace, pig iron sulfur content reduced to below 0.045%. Due to the wide variety of blast furnace iron ore, the plant has a great range of fluctuation of pig iron components. Since the heat source of converter steelmaking is only based on the chemical heat of elements in pig iron, it is necessary to install a mixing furnace for uniform pig iron Ingredients, to create favorable conditions for steelmaking. The silicon content of pig iron directly affects the amount of scrap used, Figure 7 Table