超厚料层均质烧结技术的研究与应用  

Research and application of ultra-deepbed homogeneous sintering technology

作　　者：程峥明 宁文欣 潘文 安钢[1] 李宏伟[1] 马怀营 Cheng Zhengming;Ning Wenxin;Pan Wen;An Gang;Li Hongwei;Ma Huaiying(Shougang Jingtang United Iron & Steel Co.,Ltd.,Tangshan 063200,Hebei;Shougang Technology Research Institute, Beijing 10043)

机构地区：[1]首钢京唐钢铁联合有限责任公司,河北唐山063200 [2]首钢技术研究院,北京10043

出　　处：《烧结球团》2019年第4期7-12,共6页Sintering and Pelletizing

基　　金：国家重点研发计划(2017YFB0304300)

摘　　要：提高料层厚度能够充分利用烧结料层的自动蓄热作用,从而降低烧结工序的固体燃料消耗,因此厚料层烧结一直是烧结生产的主要发展方向之一。通过对烧结料层透气性进行理论分析,开展改善混匀料堆积效果、优化烧结布料时混合料粒度分布的横向偏析和纵向偏析等技术研究;同时通过优化操作参数、治理漏风和提高料温等措施,将首钢京唐公司550m2烧结机的料层厚度提高到910mm以上。结果表明:烧结矿中铁酸钙质量分数提高了3.67%、返矿率降低了2.36%、固体燃料消耗降低了1.93kg/t-s,达到改善烧结矿产、质量和节能减排的目的。Increasing the material bed depth can make full use of the automatic heat recovery ( accumulation) of the sintering material bed, thereby reducing the solid fuel consumption in the sintering process. Therefore, the deep bed sintering has always been one of the main development directions of sintering production. Based on the theoretical analysis of the permeability of the sintering bed, such technologies as the improvement of blended material accumulation effect and the optimization of transverse segregation and longitudinal segregation of the particle size distribution of the sintering mixture are studied. A t the same time,the thickness of the material layer of the 550 m2 sintering machine of Shougang Jingtang Company is increased to over 910 mm by measures such as optimizing operating parameters, controlling air leakage and improving material temperature etc. The results show that the mass fraction of calcium ferrite increases by 3. 6 7%,the rate of return fines decreases by 2. 36% and the consumption of solid fuel decreases by 1.9 3 kg/t-s, and thus the sinter output and quality, energy saving and emission reduction are improved.

关 键 词：超厚料层 均质烧结 料层透气性 粒度 横向偏析 纵向偏析 

分 类 号：TF046.4[冶金工程—冶金物理化学]