炼钢生铁,是专供炼钢用的生铁。一般含硅量较低(不大于1.75%),含硫 较高(小于0.07%),是平炉、转炉炼钢的主要原料,占生铁产量的80—90%。其特点是脆而硬,因为其中铁和碳处于化合状态,断口呈白色,所以也叫“白口铁”。
炼钢生铁硫差产生的原因比较复杂。
The reasons leading to pig iron sulphur difference in steelmaking are very complicated.
为了获得低硅炼钢生铁,必须控制高炉内硅的还原过程。
In order to obtain low silicon iron for steelmaking the reduction process of silicon must be controlled in blast furnace.
降低炼钢生铁含硅量对炼铁本身及下一工序的炼钢生产,都能获得重大的经济效益。冶炼低硅的炼钢生铁在国内外已成潮流。
In iron smelting and steel-making, great economic benefit can be realized by lowering the content of silicon in steel pig.
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