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High-purity homogeneous compact chrome corundum material and preparation method thereof
The invention discloses a high-purity homogeneous compact chrome corundum material and a preparation method thereof, the high-purity homogeneous compact chrome corundum material mainly comprises 30-90wt% of Al2O3 and 10-70wt% of Cr2O3, and the preparation method comprises the following two steps: 1, pre-synthesizing and sintering a chrome corundum solid solution; 2, electrofusion densification of the chrome corundum solid solution; compared with other chrome corundum materials, the chrome corundum material prepared by the method has the advantages of few impurities, more uniform components and phases, higher density, higher refractoriness and refractoriness under load, and more excellent ash corrosion resistance, scouring resistance and thermal shock resistance; the method can be widely applied to the high-temperature fields of nonferrous metallurgy kilns, glass or glass fiber melting furnaces, carbon black reaction furnaces, garbage incinerators, coal water slurry gasifiers and the like with harsh working environments.
本发明公开了一种高纯均质致密铬刚玉料及其制备方法，主要成分包括Al2O3和Cr2O3，其中Al2O3和Cr2O3的百分含量分别为30~90wt.%和10~70wt.%，制备方法分为两个步骤：一是铬刚玉固溶体的预合成烧结；二是铬刚玉固溶体的电熔致密化；与其它铬刚玉料相比，此法制备的铬刚玉料杂质少，组分和物相更加均匀，致密度更高，具有更高的耐火度和荷重软化温度，更加优异的抗灰渣侵蚀性、抗冲刷性能和抗热震稳定性，可被广泛应用于工作环境更加苛刻的有色冶金窑炉、玻璃或玻纤熔窑、炭黑反应炉、垃圾焚烧炉和水煤浆气化炉等高温领域。
High-purity homogeneous compact chrome corundum material and preparation method thereof
The invention discloses a high-purity homogeneous compact chrome corundum material and a preparation method thereof, the high-purity homogeneous compact chrome corundum material mainly comprises 30-90wt% of Al2O3 and 10-70wt% of Cr2O3, and the preparation method comprises the following two steps: 1, pre-synthesizing and sintering a chrome corundum solid solution; 2, electrofusion densification of the chrome corundum solid solution; compared with other chrome corundum materials, the chrome corundum material prepared by the method has the advantages of few impurities, more uniform components and phases, higher density, higher refractoriness and refractoriness under load, and more excellent ash corrosion resistance, scouring resistance and thermal shock resistance; the method can be widely applied to the high-temperature fields of nonferrous metallurgy kilns, glass or glass fiber melting furnaces, carbon black reaction furnaces, garbage incinerators, coal water slurry gasifiers and the like with harsh working environments.
本发明公开了一种高纯均质致密铬刚玉料及其制备方法，主要成分包括Al2O3和Cr2O3，其中Al2O3和Cr2O3的百分含量分别为30~90wt.%和10~70wt.%，制备方法分为两个步骤：一是铬刚玉固溶体的预合成烧结；二是铬刚玉固溶体的电熔致密化；与其它铬刚玉料相比，此法制备的铬刚玉料杂质少，组分和物相更加均匀，致密度更高，具有更高的耐火度和荷重软化温度，更加优异的抗灰渣侵蚀性、抗冲刷性能和抗热震稳定性，可被广泛应用于工作环境更加苛刻的有色冶金窑炉、玻璃或玻纤熔窑、炭黑反应炉、垃圾焚烧炉和水煤浆气化炉等高温领域。
High-purity homogeneous compact chrome corundum material and preparation method thereof
一种高纯均质致密铬刚玉料及其制备方法
LI KEXUAN (author) / TIAN QIANJIN (author)
2022-06-24
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
| European Patent Office | 2023
| European Patent Office | 2023
| European Patent Office | 2021