超高料层烧结工艺下优化料层透气性生产实践  

Production Practice of Optimizing Material Bed Permeability by Sintering Technology with Ultra-high Material Bed

作　　者：李鹏飞 李来胜 阳习端 周建同 LI Pengfei;LI Laisheng;YANG Xiduan;ZHOU Jiantong(Hunan Valin Lianyuan Iron&Steel Co.,Ltd.,Loudi 417000,China)

机构地区：[1]涟源钢铁集团有限公司,湖南娄底417000

出　　处：《矿业工程》2024年第3期48-51,共4页Mining Engineering

摘　　要：传统烧结料层厚度因料层透气性被限制在750~800 mm,从而影响了烧结矿的生产效率。在不影响烧结矿质量的前提下,改善料层透气性,有效提高烧结料层厚度已成为进一步提高烧结矿生产效率的重要途径。涟钢360 m 2烧结机,通过加强制粒性能,优化原料结构,改进生石灰下料设备,优化圆筒混合机扬料角钢方式等措施,强化制粒,改善了烧结料层的透气性。相比于料层厚度700~750 mm烧结,料层厚度950~1000 mm超高料层条件下,烧结矿的转鼓强度逐步提高至79.23%,利用系数稳定在1.50 t/(m^(2)*h)以上,固体燃耗稳定在51.48 kg/t,返矿配比降低至21.52%,为超高料层烧结(1000 mm)提高烧结矿生产效率提供了参考。The thickness of conventional sintered material bed is limited to 750 to 800 mm due to the permeability of the material bed,which affects the production efficiency of sintered ore.Improving the permeability of the material bed and effectively increasing the thickness of the sintered material bed without affecting the quality of the sintered ore has become an important way to further improve the production efficiency of the sintered ore.In 360 m^(2)sintering machine project of LY Steel,the granulation has been strengthened and the permeability of the sintered ore bed has been improved by enhancing the granulation performance,optimizing the structure of raw material,improving the quicklime feeding equipment,optimizing the ore-lifting Angles of the cylinder mixer and so on.Compared to the sintering with a bed thickness of 700 to 750 mm,under the condition of an ultra-high bed thickness of 950 to 1000mm,the tumbler strength of the sintered ore is gradually increased to 79.23%,the utilization coefficient stabilizes above 1.50t/(m^(2)*h),the solid fuel consumption stabilizes at 51.48 kg/t,and the return ore ratio is reduced to 21.52%.This provides a reference for improving the production efficiency of sintered ore with ultra-high bed thickness(1000 mm).

关 键 词：超高料层烧结 熔剂结构 料层透气性 生产效率 

分 类 号：TF046[冶金工程—冶金物理化学]