平炉出现于工业上是在十九世纪下半期,它是以生铁和废钢为原料而炼钢的。在很短的时期内,平炉炼钢法便获得普遍的推广。无论在炼钢方法上,或者是在炉子的结构上,在所有的国家中根据许多平炉炼钢车间的经验都进行了详细的研究,因而使其更形完善,并得到了进一步的发展。在开始时,因积存大量废钢,在此基础上产生了废钢炼钢法但后来积存的废钢渐渐用完,就产生了废钢矿石炼钢法在这种废钢法的炉料中,占有大量的生铁,并采用矿石来氧化杂质。由于平炉操作灵活,可适用于任何规模的生产,容易控制,对于原料的要求不甚严格,在平 The hearth appeared industrially in the second half of the nineteenth century and was made from pig iron and scrap as raw materials. In a very short period of time, the open hearth steelmaking method has been widely promoted. Whether in the steelmaking method or in the structure of the furnace, detailed studies have been carried out in many countries on the experience of many open hearth steelmaking plants, thus making it more perfect and further developed. At the outset, a large amount of scrap steel was accumulated on the basis of which a scrap steelmaking method was produced. However, the scrap steel subsequently accumulated was used up to produce scrap steel. Steelmaking Method In this scrap method charge, a large amount of pig iron is occupied, And the use of ore to oxidize impurities. Due to open hearth operation flexibility, can be applied to any size of production, easy to control, the requirements for raw materials is not very strict, flat