Currently the service life of CDQ shafts in China is mainly restricted by the properties of the inclined flue bricks.In this work,based on the systematic analysis of the damage mechanism of inclined flue refractories,...Currently the service life of CDQ shafts in China is mainly restricted by the properties of the inclined flue bricks.In this work,based on the systematic analysis of the damage mechanism of inclined flue refractories,high performance mullite-SiC bricks were developed.The bricks were produced by corundum,andalusite,SiC and other high purity raw materials.Metal silicon and alumina ultra micropowder were added to form dispersion multi-phase structure,fortifying the matrix and improving the microstructure.The products have excellent properties such as low porosity,high density,good wear resistance,high refractoriness under load,and good thermal shock resistance.The products can replace the ordinary mullite-SiC bricks and obtain a good service life.展开更多
The static corrosion experiments of Al 2O 3 SiC C bricks have been carried out with three different dephosphorized slags or desulfuration slags,and the microstructure after slag corrosion have been analyzed,and the wr...The static corrosion experiments of Al 2O 3 SiC C bricks have been carried out with three different dephosphorized slags or desulfuration slags,and the microstructure after slag corrosion have been analyzed,and the wreck mechanisms have been discussed.展开更多
系统地研究了 Si_2N_4 结合的 SiC 质砖衬在高炉冶炼环境中的氧化特征及其碱蚀行为,初步探讨了高炉用 SiC 砖衬的蚀损机理。结果表明;氧化→碱蚀→剥落或熔蚀是高炉用 SiC 砖蚀损的基本过程。传中杂质将使砖衬产生“溶洞”现象,热应力...系统地研究了 Si_2N_4 结合的 SiC 质砖衬在高炉冶炼环境中的氧化特征及其碱蚀行为,初步探讨了高炉用 SiC 砖衬的蚀损机理。结果表明;氧化→碱蚀→剥落或熔蚀是高炉用 SiC 砖蚀损的基本过程。传中杂质将使砖衬产生“溶洞”现象,热应力将导致砖衬工作面形成龟裂。“熔洞”和龟裂直接破坏了砖衬工作面的完整性,结果将诱发和加速 SiC 砖衬的蚀损。展开更多
文摘Currently the service life of CDQ shafts in China is mainly restricted by the properties of the inclined flue bricks.In this work,based on the systematic analysis of the damage mechanism of inclined flue refractories,high performance mullite-SiC bricks were developed.The bricks were produced by corundum,andalusite,SiC and other high purity raw materials.Metal silicon and alumina ultra micropowder were added to form dispersion multi-phase structure,fortifying the matrix and improving the microstructure.The products have excellent properties such as low porosity,high density,good wear resistance,high refractoriness under load,and good thermal shock resistance.The products can replace the ordinary mullite-SiC bricks and obtain a good service life.
文摘The static corrosion experiments of Al 2O 3 SiC C bricks have been carried out with three different dephosphorized slags or desulfuration slags,and the microstructure after slag corrosion have been analyzed,and the wreck mechanisms have been discussed.
文摘系统地研究了 Si_2N_4 结合的 SiC 质砖衬在高炉冶炼环境中的氧化特征及其碱蚀行为,初步探讨了高炉用 SiC 砖衬的蚀损机理。结果表明;氧化→碱蚀→剥落或熔蚀是高炉用 SiC 砖蚀损的基本过程。传中杂质将使砖衬产生“溶洞”现象,热应力将导致砖衬工作面形成龟裂。“熔洞”和龟裂直接破坏了砖衬工作面的完整性,结果将诱发和加速 SiC 砖衬的蚀损。
