The Influence of Biomass Cokes on the Microstructure and Thermal Shock Resistance of MgO-C Refractories  

作　　者：Patrick GEHRE Magzhan KAPESSOV Stefan GUHL Martin GRÄBNER Christos G.ANEZIRIS 

机构地区：[1]Institute of Ceramics,Refractories and Composite Materials,TU Bergakademie Freiberg,Freiberg 09599,Germany [2]Institute of Energy Process Engineering and Chemical Engineering,TU Bergakademie Freiberg,Freiberg 09599,Germany

出　　处：《China's Refractories》2024年第3期9-14,共6页中国耐火材料（英文版）

基　　金：funded by the Deutsche Forschungsgemeinschaft(DFG,German Research Foundation),project number 461482547;within the Research Training Group“GRK 2802:Refractory Recycling:A contribution for raw material-,energy-and climateefficiency in high temperature processes”;The authors thankfully acknowledge the support of Dr.Gert Schmidt for the SEM/EDX investigations and Dr.Vânia Regina Salvini(Universidade Federal de São Carlos)for her inspiring input to conduct the thermal shock resistance investigation.

摘　　要：In this study,biomass cokes from sunflower seed hull(SFSH)and wood pellets(WP)were added to a MgO-C batch(3 mass%C)to replace 1.1 mass%of graphite.After hardening and carbonizing the samples,the influence of the biomass cokes on the microstructure and thermal shock resistance was investigated.The replacement of flaky graphite by carbonized WP and SFSH reduced the bulk density and increased the apparent porosity after pressing and carbonization,but the degree was only marginal.This was confirmed by SEM investigations,where the biomass-coke containing samples exhibited a microstructure with a higher amount of pores between the fine MgO grains.The thermal shock resistance of the porous wood pellet coke containing MgO-C is at the same level as the reference sample but not superior to it.

关 键 词：MGO-C CARBON BIOMASS MICROSTRUCTURE thermal shock 

分 类 号：TQ175.1[化学工程—硅酸盐工业]