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Wet spraying coating for blast furnace shaft bottom inner liner, application thereof, and restoration method of blast furnace shaft bottom inner liner
The invention belongs to the technical field of blast furnace inner liner repairing, and concretely relates to a wet spraying coating for a blast furnace shaft bottom inner liner, an application thereof, and a restoration method of the blast furnace shaft bottom inner liner. The spraying coating comprises 4-8wt% of alumina with the granularity of 5-8mm, 10-20wt% of alumina with the granularity of 3-5mm, 15-25wt% of alumina with the granularity of 1-3mm, 10-15wt% of fused corundum with the granularity of 0.088-1mm, 8-12wt% of silicon carbide with the granularity of 0.088-1mm, 25-35wt% of fused corundum with the granularity being not greater than 0.088mm, 1-4wt% of silica micro-powder, 5-10wt% of active alumina micro-powder and 0.8-1.5wt% of an additive. The service life of the spray coating reaches above 16 months, and is 50% longer than the service life of pure calcium aluminate cement combined wet spraying coatings, and has the characteristics of long construction time, excellent medium-temperature physical performances, short baking time, and high one-time repairing service life.
Wet spraying coating for blast furnace shaft bottom inner liner, application thereof, and restoration method of blast furnace shaft bottom inner liner
The invention belongs to the technical field of blast furnace inner liner repairing, and concretely relates to a wet spraying coating for a blast furnace shaft bottom inner liner, an application thereof, and a restoration method of the blast furnace shaft bottom inner liner. The spraying coating comprises 4-8wt% of alumina with the granularity of 5-8mm, 10-20wt% of alumina with the granularity of 3-5mm, 15-25wt% of alumina with the granularity of 1-3mm, 10-15wt% of fused corundum with the granularity of 0.088-1mm, 8-12wt% of silicon carbide with the granularity of 0.088-1mm, 25-35wt% of fused corundum with the granularity being not greater than 0.088mm, 1-4wt% of silica micro-powder, 5-10wt% of active alumina micro-powder and 0.8-1.5wt% of an additive. The service life of the spray coating reaches above 16 months, and is 50% longer than the service life of pure calcium aluminate cement combined wet spraying coatings, and has the characteristics of long construction time, excellent medium-temperature physical performances, short baking time, and high one-time repairing service life.
Wet spraying coating for blast furnace shaft bottom inner liner, application thereof, and restoration method of blast furnace shaft bottom inner liner
LI XINJIAN (author) / QUAN KUNPENG (author) / SU BOPING (author) / LIU ZHONGJIANG (author)
2015-12-02
Patent
Electronic Resource
English
IPC:
C04B
Kalk
,
LIME
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