Iron runner castable containing 80% of waste refractories or above

Abstract

The invention belongs to the field of undetermined refractory materials and particularly relates to iron runner castable containing 80% of waste refractories or above. The iron runner castable is prepared from, by mass, 44%-54% of waste iron runner castable particles, 2.5%-12.5% of waste silicon carbide sagger material particles, 8%-12% of waste silicon carbide sagger powder, 5%-15% of waste 95 ceramic particles, 0.5%-4% of waste silicon carbide dust drawing powder, 0.5%-3% of pitch balls, 2.5%-3% of pure calcium aluminate cement, 10%-13% of oxide micro powder, 0.6%-2% of antioxidant, 0%-0.1% of anti-explosion fibers and 0.3%-0.5% of dispersing agent. The utilization proportion of the waste refractories of the iron runner castable reaches 80% or above, industrial application proves that the field use effect of the iron runner castable is good, volume production operability is high, the raw material cost is low, and advantages of economic benefits and social benefits are achieved.

Description

technical field [0001] The invention belongs to the field of indeterminate refractory materials, in particular to an iron ditch castable containing more than 80% waste refractory materials. Background technique [0002] In recent years, with the continuous downturn of the steel industry, the pressure of various steel companies to reduce costs has increased sharply, and refractory materials have also become an important link in the steel industry to reduce costs and increase efficiency. The blast furnace casthouse is an important part of the ironmaking process. The overall contracted price per ton of iron in the casthouse has dropped again and again, which has kept suppliers in a state of zero profit for a long time, and the price reduction has also laid hidden dangers for safe production. [0003] However, at the same time, large and medium-sized iron and steel enterprises have a large number of used iron trench linings that are dismantled and discarded every year, a large n...

AI Technical Summary

Problems solved by technology

The blast furnace casthouse is an important part of the ironmaking process. The overall contracted price per ton of iron in the casthouse has dropped again and again, which has kept suppliers in a state of zero profit for a long time, and the price reduction has also laid hidden dangers for safe production.

[0003] However, at the same time, large and medium-sized iron and steel enterprises have a large number of used iron trench linings that are dismantled and discarded every year, a large number of used alumina ceramics are discarded every year in the power industry, and a large number of used silicon carbide saggers are discarded every year in the ceramic industry. The board is discarded, and the waste accumulated by the silicon carbide processing enterprises every year has not been fully recycled.

[0004] Although there are reports of a small amount of waste and old refractories being used in iron trench ramming materials in China, the application types of waste and old refractories are single, and the utilization rate of waste and old refractories is not high, and it is difficult to break through 60%.

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