Sintering of solid waste generated in iron and steel manufacturing process in Shougang Jingtang  

作　　者：Yuan-dong Pei Sheng-li Wu Shao-guo Chen Zhi-xing Zhao Gang An Zheng-ming Cheng Yao-sheng Luo 

机构地区：[1]School of Metallurgical and Ecological Engineering,University of Science and Technology Beijing [2]Key Laboratory of Ecology and Recycle Metallurgy,Ministry of Education,University of Science and Technology Beijing [3]Shougang Research Institute of Technology [4]Shougang Jingtang Integrated Iron and Steel Co.,Ltd.

出　　处：《Journal of Iron and Steel Research International》2017年第7期697-704,共8页

摘　　要：It is important to make full use of waste generated in the iron and steel manufacturing process for energy saving,emission reduction,low carbon production and a circular economy.Based on research on different kinds of industrial solid wastes from Shougang Jingtang,wastes have been optimized for use in sintering.At first,basic tests for all kinds of solid wastes that may be used in sintering were carried out,including chemical composition,calorific value of a fuel,holding time at high temperatures,the sintering pot test,etc.The results show that the appropriate solid waste ratios for current sintering conditions are：steel slag〈5%,scale 2.0%,environmental ash 2.0%,and cyclone ash 1.0%;blast furnace dry ash,sintering electric field ash,and steelmaking ash should not be circulated in sintering.As for the fuel structure,both coking ash and nut coke should be below 15%.By optimizing the addition of solid wastes,the damage of harmful elements to sintering and blast furnaces has been significantly reduced,which satisfies the demands for blast furnace materials and earns benefits.The utilization of solid wastes has made a contribution to the circular economy and sustainable development.It is important to make full use of waste generated in the iron and steel manufacturing process for energy saving,emission reduction,low carbon production and a circular economy.Based on research on different kinds of industrial solid wastes from Shougang Jingtang,wastes have been optimized for use in sintering.At first,basic tests for all kinds of solid wastes that may be used in sintering were carried out,including chemical composition,calorific value of a fuel,holding time at high temperatures,the sintering pot test,etc.The results show that the appropriate solid waste ratios for current sintering conditions are：steel slag〈5%,scale 2.0%,environmental ash 2.0%,and cyclone ash 1.0%;blast furnace dry ash,sintering electric field ash,and steelmaking ash should not be circulated in sintering.As for the fuel structure,both coking ash and nut coke should be below 15%.By optimizing the addition of solid wastes,the damage of harmful elements to sintering and blast furnaces has been significantly reduced,which satisfies the demands for blast furnace materials and earns benefits.The utilization of solid wastes has made a contribution to the circular economy and sustainable development.

关 键 词：Sintering Solid waste Circular economy Green economy 

分 类 号：TF046.4[冶金工程—冶金物理化学] X757[环境科学与工程—环境工程]