摘要
The effects of two types of corundum-spinel micropowders(D and G)on the phase composition,bulk density,apparent porosity,mechanical properties,and slag resistance of corundum-spinel castable matrices were investigated.The results indicated that,with the same addition of corundum-spinel micropowders,in-situ spinel was formed in both groups after firing at 1100℃.After firing at 1600℃,spinel,corundum,and CA6 existed in the two groups.Compared to the samples with powder D,those with powder G exhibited higher bulk density and lower apparent porosity after firing at 1100℃,but the cold modulus of rupture and compressive strength were lower.After firing at 1600℃,the cold modulus of rupture of the samples with powder G was higher,meanwhile there was minimal difference in the apparent porosity between the two groups.Both corundum-spinel micropowders showed good sintering activity,and the matrix samples exhibited excellent slag resistance.The corundum-spinel castable matrix with powder G showed better corrosion resistance compared to that with powder D.
基金
funded by National Natural Science Foundation of China and Youth Fund Projects(51802235)
Hubei Science and Technology Innovation Talent Project(2023DJC087)
Basic Research on Key Technology and Application of Multifunctional Lightweight Refractory under Double Carbon Background(2021CSA075).
