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提高小高炉生铁质量主要有两方面内容:一是提高生铁合格率;一是生铁牌号上升。本文试图结合本厂生产实践,对有关提高生铁质量问题进行某些探讨,分述如下:一、关于提高生铁合格率目前,小高炉生铁出格,绝大部份是因硫出格。因此,提高生铁合格率的关键就是解决硫的问题,其它元素的含量,则较易达到要求。按照国家规定标准,铸造生铁中,硫含量最高不得超过0.06%(Z20以上S≤0.05%)。所以,脱硫是高炉生产优质生铁的首要问题。根据原料分析,生铁中硫主要来自矿石(烧结矿)、焦炭、熔剂、(在使用喷吹燃料时,也来自喷吹燃料)。根据我厂原料的情况:焦炭的含硫量为1.2～1.5%,烧结矿中硫为0.05～0.1%,炉料带入的硫最多的是
Improve the quality of pig iron blast furnace mainly in two aspects: First, improve the pass rate of pig iron; First, the grade of pig iron rose. This article attempts to combine the factory production practice, to improve the quality of pig iron to carry out some of the discussions are as follows: First, on improving the pass rate of pig iron At present, the small blast furnace pig iron, the vast majority of sulfur due to grid. Therefore, the key to improve the pass rate of pig iron is to solve the sulfur problem, the content of other elements, it is easier to meet the requirements. In accordance with the national standard, cast iron, the maximum sulfur content shall not exceed 0.06% (Z ≤ 0.05% S). Therefore, desulphurization is the primary issue of producing high quality pig iron in the blast furnace. According to the analysis of raw materials, the sulfur in pig iron mainly comes from ore (sinter), coke, flux, (also from the injection of fuel when using fuel for injection). According to the situation of our factory raw materials: the sulfur content of coke is 1.2 ~ 1.5%, the sulfur in sinter is 0.05 ~ 0.1%, the burden of sulfur in the charge is