Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Al2O3-Cr2O3 refractory aggregate and preparation method thereof
The invention belongs to the field of refractory materials and relates to an Al2O3-Cr2O3 refractory aggregate and its preparation method. The Al2O3-Cr2O3 refractory aggregate has nonuniform chemical composition. Content of Cr2O3 at peripheral position of the Al2O3-Cr2O3 refractory aggregate is greater than or equal to 20%, and content of Cr2O3 at the central position is lower than Content of Cr2O3 at the peripheral position. Porosity of the Al2O3-Cr2O3 refractory aggregate is not more than 10%. Al2O3 and Cr2O3 in the refractory aggregate form uniform solid solutions. Particles and a coating are combined tightly, and strength is high. A diffusion reaction of Al2O3 and Cr2O3 at high temperature causes Cr2O3 concentration attenuation from the surface layer to the center of the aggregate. An Al2O3-Cr2O3 refractory product prepared from the refractory aggregate has good slag corrosion resistance. Meanwhile, utilization rate of chromium resources is high.
Al2O3-Cr2O3 refractory aggregate and preparation method thereof
The invention belongs to the field of refractory materials and relates to an Al2O3-Cr2O3 refractory aggregate and its preparation method. The Al2O3-Cr2O3 refractory aggregate has nonuniform chemical composition. Content of Cr2O3 at peripheral position of the Al2O3-Cr2O3 refractory aggregate is greater than or equal to 20%, and content of Cr2O3 at the central position is lower than Content of Cr2O3 at the peripheral position. Porosity of the Al2O3-Cr2O3 refractory aggregate is not more than 10%. Al2O3 and Cr2O3 in the refractory aggregate form uniform solid solutions. Particles and a coating are combined tightly, and strength is high. A diffusion reaction of Al2O3 and Cr2O3 at high temperature causes Cr2O3 concentration attenuation from the surface layer to the center of the aggregate. An Al2O3-Cr2O3 refractory product prepared from the refractory aggregate has good slag corrosion resistance. Meanwhile, utilization rate of chromium resources is high.
Al2O3-Cr2O3 refractory aggregate and preparation method thereof
SUN HONGGANG (Autor:in) / LI PENGTAO (Autor:in) / LI HONGXIA (Autor:in) / WANG GANG (Autor:in) / YAN SHUANGZHI (Autor:in) / GENG KEMING (Autor:in) / DU YIHAO (Autor:in) / CAI BINLI (Autor:in)
22.04.2015
Patent
Elektronische Ressource
Englisch
IPC:
C04B
Kalk
,
LIME
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