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【前言】高炉使用自熔性烧结矿进行冶炼,是炼铁生产技术上的一大进步。众所周知,碱度(CaO/SiO_2)1.2左右的烧结矿,在质量上存在的严重缺陷是,在冷却过程中产生粉化,便给高炉生产带来了危害。根据首钢的生产实践,在烧结科中加入含磷的物料,对抑制烧结矿的粉化取得了良好的效果。但做为冶炼低磷生铁来说,这显然是不够合适的,北台钢铁厂在烧结料中配加1％左右的含硼铁精矿粉,也同样取得了抑制烧结矿粉化的作用,并且在高炉生产上取得了较好的结果。但增加生铁中硼元素的含量和增加生铁中磷的含量,对生铁质量的影响就大不一样了。如以冶炼制钢生铁为例,含硼生铁可成为冶炼硼钢的良好原料。
【Preface】 The use of self-fluxing sinter blast furnace for smelting is a big step forward in iron making technology. It is well known that the serious defect in the quality of sintered ore with a basicity (CaO / SiO2) of about 1.2 is that the pulverization during the cooling process brings harm to the blast furnace production. According to Shougang’s production practice, adding phosphorus-containing materials in the Sintering Section has achieved good results in suppressing sintering of the sinter. However, as a low-phosphorus smelting pig iron, which is clearly not enough, the North Taiwan Iron and Steel Plant in the sintering material with about 1% of boron-containing iron ore concentrate, also achieved the role of sinter suppress, and In blast furnace production has achieved good results. However, increasing the content of boron in pig iron and increasing the content of phosphorus in pig iron, the quality of pig iron is quite different. For example, smelting steel pig iron, boron-containing pig iron can be a good raw material for smelting boron steel.