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Magnesium-aluminum-iron spinel brick and preparation method thereof
The invention belongs to the technical field of refractory materials, and in particular discloses a magnesium-aluminum-iron spinel brick and a preparation method thereof. The magnesium-aluminum-iron spinel brick is prepared by using high-iron high-purity magnesia with grain size of 5 to 3mm, high-iron high-purity magnesia with grain size of 3 to 1mm, high-iron high-purity magnesia with grain size of 1 to 0.088mm, sintered aluminum-magnesium spinel with grain size of 4 to 1mm, electrically molten iron-aluminum spinel with grain size of 2 to 1mm, high-purity magnesia powder with grain size d<95> smaller than 0.088mm, iron scale powder with grain size d<95> smaller than 0.088mm, magnesium chloride and alkaline pulp waste liquid. The finished product is obtained by weighing the raw materials according to proportions, mixing, pressing, drying and sintering at 1550 to 1560 DEG C. By using the high-iron high-purity magnesia, the high-purity magnesia, the sintered aluminum-magnesium spinel and the electrically molten iron-aluminum spinel as main raw materials and changing the introduction manner of the material spinel, the product after high-temperature sintering has high temperature resistance, erosion resistance and thermal shock resistance performance and is low in thermal conductivity coefficient; the product is used for calcining zones and transition zones of cement kilns to improve the service life of the materials at the parts, the shell temperature can be reduced and the effects of saving energy and reducing emission are achieved.
Magnesium-aluminum-iron spinel brick and preparation method thereof
The invention belongs to the technical field of refractory materials, and in particular discloses a magnesium-aluminum-iron spinel brick and a preparation method thereof. The magnesium-aluminum-iron spinel brick is prepared by using high-iron high-purity magnesia with grain size of 5 to 3mm, high-iron high-purity magnesia with grain size of 3 to 1mm, high-iron high-purity magnesia with grain size of 1 to 0.088mm, sintered aluminum-magnesium spinel with grain size of 4 to 1mm, electrically molten iron-aluminum spinel with grain size of 2 to 1mm, high-purity magnesia powder with grain size d<95> smaller than 0.088mm, iron scale powder with grain size d<95> smaller than 0.088mm, magnesium chloride and alkaline pulp waste liquid. The finished product is obtained by weighing the raw materials according to proportions, mixing, pressing, drying and sintering at 1550 to 1560 DEG C. By using the high-iron high-purity magnesia, the high-purity magnesia, the sintered aluminum-magnesium spinel and the electrically molten iron-aluminum spinel as main raw materials and changing the introduction manner of the material spinel, the product after high-temperature sintering has high temperature resistance, erosion resistance and thermal shock resistance performance and is low in thermal conductivity coefficient; the product is used for calcining zones and transition zones of cement kilns to improve the service life of the materials at the parts, the shell temperature can be reduced and the effects of saving energy and reducing emission are achieved.
Magnesium-aluminum-iron spinel brick and preparation method thereof
YUAN LIN (author) / BAI KAIXUAN (author) / ZHENG JIANLI (author) / LI QUANYOU (author) / DU WEI (author) / CAO WEI (author)
2015-12-09
Patent
Electronic Resource
English
IPC:
C04B
Kalk
,
LIME
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