ORALS

SESSION: IronTuePM1-R3	Poveromo International Symposium (8th Intl. Symp. on Advanced Sustainable Iron & Steel Making)
Tue. 29 Nov. 2022 / Room: Arcadia 1
Session Chairs: Tateo Usui; Session Monitor: TBA

14:25: [IronTuePM106] OS
Production and application of low silica self-fluxed pellets in Shougang Jingtang
Gele Qing¹ ; Minge Zhao² ; Gang An³ ; Kai Wang³ ; Zhixing Zhao¹ ; ¹Shougang Research Institute of Technology, Beijing, China; ²Shougang Group Co., Ltd, Beijing, China; ³Shougang Jingtang United Iron & Steel CO., Ltd, Tangshan, China;
Paper Id: 90 [Abstract]

<p>In order to reduce the fuel rate of blast furnace and promote green development, Shougang Jingtang Steel company has built two straight grate indurating machines with productivity of 8 million tons of pellets. In this paper, the production technologies of self-fluxed pellets with hydrated lime were studied successfully on the indurating machine. Hydrated lime has a good binder property, decrease the amount of bentonite and obtain low silica pellet. The basicity of pellet is 1.15 and SiO2 content is 2.0%. The low silica self-fluxed pellets were used in the three large blast furnaces with 5500m3 in Shougang Jingtang, the proportion of pellets in burden was increased from 28% to 55%, slag rate of blast furance was decreased from 280kg/tHM to 215kg/tHM, the fuel rate was decreased from 500kg/tHM to 480kg/tHM.</p>