Alkaline pellet new ore blending mode based on concept of flux distribution homogenization
TIAN Yunqing1, SUN Dawei2, LI Ming2, QIAN Ruiqing2, NIU Hanglei2, WANG Pengcheng2
1. Research Institute of Technology, Shougang Group Co., Ltd., Beijing 100043, China; 2. Ironmaking Department, Shougang Jingtang Co., Ltd., Tangshan 063200, Hebei, China
Abstract：Developing alkaline pellets production and keeping high proportion pellet smelting in blast furnace are important ways for the green and low-carbon development of pre iron process. The consolidation process of alkaline pellets was relatively complex, so based on the analysis of consolidation process for alkaline pellets, theoretical calculation of the liquid phase for alkaline pellets, and the study of reaction ability between magnetic powder and alkaline flux, the concept of homogenization for alkaline flux distribution was proposed, and the three logical levels and micro reflections of its existence were explained. Analysis shows that only by homogenizing alkaline flux can alkaline pellets obtain better consolidation quality and metallurgical properties. The production practice of a new ore blending mode of Shougang Jingtang pellets based on the concept of homogenization for alkaline flux distribution shows that after homogenizing flux distribution, the consolidation quality of pellets remains at a high level, and the compressive strength of finished pellets exceeds 3 200 N, the reduction swelling index decreases from 16.5% to about 15.2%, the reduction index increases from 86.72% to 88.90%, and the IRD+3.15 decreases slightly, then the homogenization effect of flux distribution is obvious.
田筠清, 孙大为, 李明, 钱瑞清, 牛行磊, 王鹏铖. 基于熔剂分布均质化概念的碱性球团配矿新模式[J]. 中国冶金, 2023, 33(7): 73-80.
TIAN Yunqing, SUN Dawei, LI Ming, QIAN Ruiqing, NIU Hanglei, WANG Pengcheng. Alkaline pellet new ore blending mode based on concept of flux distribution homogenization[J]. China Metallurgy, 2023, 33(7): 73-80.
2023, Vol. 33 
