包钢炼铁厂烧结二部降低固体燃耗实践

Practices on Reducing Solid Fuel Consumption in 2^(#)Sintering Workshop ofIron-making Plant of Baotou Steel

文章针对包钢炼铁厂烧结二部2^(#)烧结机固体燃耗较高的现状进行了系统地分析。通过对不同品种燃料进行分类装槽、破碎,控制合理的无烟煤与焦粉比例,将燃料综合粒度>5 mm部分控制在15%~20%之间,<1 mm部分控制在30%左右;通过将烧结机台车挡板提高到750 mm,同时将铺底料厚度由85 mm下调至70 mm,提高了有效料层厚度,增加了自动蓄热效果;通过控制烧结混合料水分由7.2%降至6.9%,减小了烧结过湿层。采取上述措施后,烧结二部固体燃耗显著降低,2023年固体燃耗达到50.33 kg/t,较2021年降低了2.13 kg/t,为进一步降低铁前工序能耗奠定基础。

In the paper,the current situation of higher solid fuel consumption for 2^(#)sintering machine in 2^(#)Sintering Workshop of Iron-making Plant of Baotou Steel is systematacially analyzed.The fuel with comprehensive particle size>5 mm is controlled at 15%~20%and that with comprehensive particle size<1 mm is controlled at about 30%through classifying different fuel bands,putting them into tank and crushing them as well as controlling reasonable proportion of anthracite and coke powder;effective material layer thickness is increased and automatic heat storage effect is improved through increasing height of baffle for trolley of sintering machine to 750 mm and reducing thickness of bed charge from 85 mm to 70 mm;overdamp layer of sintering is reduced through reducing moisture of sinter mixture from 7.2%to 6.9%.The solid fuel consumption in 2^(#)sintering workshop is reduced significantly through taking the above measures.It reached 50.33 kg/t in 2023,which is 2.13 kg/t lower than that in 2021,which lays the foundation for further reducing energy consumption in working procedure before iron-making.