首钢水钢提高烧结机利用系数的技术改造

Technological Reformation to Improve Productivity of Sintering Machine in Shougang of Shougang

首钢水钢铁焦事业部二烧车间停产后,仅有的两台265m^2烧结机承担一座2500m^3高炉和一座1350m3高炉所需的烧结矿,在原有71-73%的入炉烧结率情况下,基本上铁烧产能能够匹配。但随着经济炼铁的需要,水钢将入炉烧结率比例提高到80%以上,烧结产能面临短板,急需在停产一个车间的基础上,满足高炉生产所需烧结矿。为此水钢利用两次同步检修时间对整个抽风系统进行堵漏风的同时,分别对两台烧结机进行改型,烧结机改造后,较大地提高了烧结生产保障能力,在烧结产能得到提高的基础上,烧结矿质量有所改善,满足了高炉对烧结矿的需求。本文介绍水钢烧结机改造的内容及改造前后,烧结技术参数发生的变化,烧结矿产量、质量变化。

After No.2 sintering workshop in our department was shut down, only two 265 m2 sintering machines were responsible for sinter demand of a 2500 m3 blast furnace and a 1350 m3 blast furnace. In the past, the sinter ratio in iron bearing material charged into blast furnace was 71%-73%, the sintering capacity of two 265 m2 sintering machines almost could match with the demand of the two blast furnaces. But, in view of economical ironmaking, the sinter ratio should increased to above 80%, so the sintering capacity faced a shortage that the only two 265 m2 sintering machines had to meet sinter demand of two blast furnaces. Therefore, during twice synchronous repairs of sintering equipment, all of air leakages in the exhausting systems of two sintering machines were plugged, at the same time, the two sintering machines were reformed. After the reformation of the two sintering machines, the sintering capacity was greatly improved and guaranteed. On the one hand, the sintering capacity was enhanced, on the other hand, the sinter quality was improved, so the sinter demand of two blast furnaces was met. The reformation contents of sintering machines, changes of sintering parameters between before- and after-reformation, and changes of capacity and quality of sinter were introduced in this article.