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Preparation method of deformed/special-shaped alumina hollow ball heat-insulating product
The invention belongs to the technical field of refractory materials, and in particular relates to a preparation method of a deformed/special-shaped alumina hollow ball heat-insulating product. The heat-insulating product is prepared by taking an alumina hollow ball as an aggregate, MgF2 powder, fused white corundum fine powder, alpha-Al2O3 powder and AlF3 powder as matrixes, and by taking a water soluble amino resin or water soluble phenol-formaldehyde resin solution as a binding agent through blending, forming and drying, as well as sintering at high temperature. By virtue of the high bonding strength of the water soluble amino resin or water soluble phenol-formaldehyde resin solution at medium and low temperature as well as sintering promotion effects of the AlF3 and MgF2, the deformed/special-shaped product disclosed by the invention has the advantages of being high in refractoriness under load, good in high-temperature volume stability and the like; and meanwhile, the product has the characteristics of being heavy in piece weight, complex in shape, high in yield and the like.
Preparation method of deformed/special-shaped alumina hollow ball heat-insulating product
The invention belongs to the technical field of refractory materials, and in particular relates to a preparation method of a deformed/special-shaped alumina hollow ball heat-insulating product. The heat-insulating product is prepared by taking an alumina hollow ball as an aggregate, MgF2 powder, fused white corundum fine powder, alpha-Al2O3 powder and AlF3 powder as matrixes, and by taking a water soluble amino resin or water soluble phenol-formaldehyde resin solution as a binding agent through blending, forming and drying, as well as sintering at high temperature. By virtue of the high bonding strength of the water soluble amino resin or water soluble phenol-formaldehyde resin solution at medium and low temperature as well as sintering promotion effects of the AlF3 and MgF2, the deformed/special-shaped product disclosed by the invention has the advantages of being high in refractoriness under load, good in high-temperature volume stability and the like; and meanwhile, the product has the characteristics of being heavy in piece weight, complex in shape, high in yield and the like.
Preparation method of deformed/special-shaped alumina hollow ball heat-insulating product
YIN HONGJI (author) / GENG KEMING (author) / CHENG HEPENG (author) / HU PIAO (author) / WANG HAN (author) / LYU YANHUA (author) / MA XUFENG (author) / TAN QINGHUA (author) / WU AIJUN (author)
2015-04-01
Patent
Electronic Resource
English
IPC:
C04B
Kalk
,
LIME
| European Patent Office | 2021
| European Patent Office | 2022
| European Patent Office | 2021