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Light-weight corundum-spinel castable and preparation method thereof
The invention relates to a light-weight corundum-spinel castable and a preparation method thereof. The preparation method includes following steps: (A) employing 60-75 wt% of equal-diameter micro-porous corundum spheres as an aggregate, and employing 8-12 wt% of electric-fused white corundum fine powder, 2-8 wt% of electric-fused magnesite fine powder, 2-8 wt% of magnesium aluminate spinel fine powder, 6-12 wt% of [alpha]-Al2O3 micro powder, 0.5-2.5 wt% of chromium oxide powder and 3-7 wt% of an aluminum silicone gel powder as substrate materials, wherein the aggregate and the substrate materials form a raw material in total; (B) employing organic fibers accounting for 0.02-0.08 wt% of the raw material and a polycarboxylate water reducer accounting for 0.05-0.12 wt% of the raw material as additive materials, pre-mixing the substrate material with the additive materials and adding the aggregate with uniform mixing; (C) adding water accounting for 3-5 wt% of the raw material, stirring the mixture and performing cast moulding; and (D) maintaining the temperature at 110-200 DEG C for 12-48 h, roasting the moulded product at 800-1200 DEG C for 24-72 h to obtain the light-weight corundum-spinel castable. The light-weight corundum-spinel castable is low in apparent porosity, is low in volume density, is low in heat conductivity, is strong in anti-slag-erosion capability and is long in service life.
Light-weight corundum-spinel castable and preparation method thereof
The invention relates to a light-weight corundum-spinel castable and a preparation method thereof. The preparation method includes following steps: (A) employing 60-75 wt% of equal-diameter micro-porous corundum spheres as an aggregate, and employing 8-12 wt% of electric-fused white corundum fine powder, 2-8 wt% of electric-fused magnesite fine powder, 2-8 wt% of magnesium aluminate spinel fine powder, 6-12 wt% of [alpha]-Al2O3 micro powder, 0.5-2.5 wt% of chromium oxide powder and 3-7 wt% of an aluminum silicone gel powder as substrate materials, wherein the aggregate and the substrate materials form a raw material in total; (B) employing organic fibers accounting for 0.02-0.08 wt% of the raw material and a polycarboxylate water reducer accounting for 0.05-0.12 wt% of the raw material as additive materials, pre-mixing the substrate material with the additive materials and adding the aggregate with uniform mixing; (C) adding water accounting for 3-5 wt% of the raw material, stirring the mixture and performing cast moulding; and (D) maintaining the temperature at 110-200 DEG C for 12-48 h, roasting the moulded product at 800-1200 DEG C for 24-72 h to obtain the light-weight corundum-spinel castable. The light-weight corundum-spinel castable is low in apparent porosity, is low in volume density, is low in heat conductivity, is strong in anti-slag-erosion capability and is long in service life.
Light-weight corundum-spinel castable and preparation method thereof
HUANG AO (author) / GU HUAZHI (author) / FU LYUPING (author) / ZHANG MEIJIE (author) / LI NAN (author)
2016-01-13
Patent
Electronic Resource
English
IPC:
C04B
Kalk
,
LIME
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