Analysis on residual coke during medium maintenance of No.6 blast furnace of Wusteel
WANG Yuan-sheng1,2，XUE Gai-feng1,2，BAO Jun-fang1,2，REN Yu-ming1,2
（1. Research and Development Center， Wuhan Iron and Steel Group Corporaition，Wuhan 430080，Hubei，China 2. Hubei Key Laboratory of Coking Coal Utilization， Wuhan 430080，Hubei，China）
Abstract：In order to further study the deterioration behavior of coke in the blast furnace， and to explore a more suitable evaluation index of coke， the coke was took out from the furnace top and down in a hierarchical way during the medium maintenance， the physical and chemical properties of coke after reaction at high temperature were determined and analysed. The moisture， ash， volatile components， of coke was determined by Kaiyuan 5E-MAG6700 full automatic workpoint instrument， the apparent porosity was determined by Kexiang XQK-2000 apparent porosity measuring instrument. The research results show that the coke ash content of residual coke in the furnace was higher than that at the furnace feeding， the fixed carbon content decreased obviously. The pores of coke retained a large number of slag. The contents of SiO2， Al2O3， CaO， MgO of primary slag were not high， while the contents of MnO and Fe2O3， P2O5 were several times or even ten times than those in end slag， there was a considerable part of the slag in the lower part of the hearth. The maxim um enrichment amount of alkali metal K and Na lay between the lower part of bosh and the top part of hearth， the maximum enrichment amount of Zn located at the top part of hearth. Through the research and analysis of the residual coke in the blast furnace， the understanding of the behavior of coke in the blast furnace is more profound， and the characteristics of the blast furnace is more easy to be understood， which can be used to guide the production in blast furnace.
收稿日期: 2016-03-30
出版日期: 2016-12-09
引用本文:
王元生，薛改凤，鲍俊芳，任玉明，. 武钢6号高炉中修炉内残留焦炭分析[J]. 钢铁, 2016, 51(12): 20-24.
WANG Yuan-sheng，，XUE Gai-feng，，BAO Jun-fang，，REN Yu-ming，. Analysis on residual coke during medium maintenance of No.6 blast furnace of Wusteel. Iron and Steel, 2016, 51(12): 20-24.
2016, Vol. 51 
