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Iron-storage type casting material for iron tapping channel, and preparation method thereof

A castable and tapping channel technology, which is applied in the field of refractory materials, can solve the problems of increasing the number of repeated trench repairs, affecting the punctual tapping of blast furnaces, and inconvenient blast furnace production, achieving good thermal shock resistance, high iron throughput, The effect of reducing labor intensity

Inactive Publication Date: 2013-01-30
王振江
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

With the continuous improvement of blast furnace utilization factor and tapping frequency, its following shortcomings are constantly revealed, namely, loose structure, low strength, poor oxidation resistance, low iron flow rate, minor repair of iron trench every five days, major repair every ten days, and repeated repairs The number of ditches increases, the labor intensity is high, and the use time is short, which often affects the blast furnace's punctual tapping and brings inconvenience to the blast furnace production

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0010] A castable for iron storage type tapping chute, characterized in that: the castable is made of brown corundum, dense corundum, silicon carbide, spherical pitch, α-Al 2 O 3 , Pure calcium aluminate cement, silica powder, metal silicon powder, Guangxi white clay, metal aluminum powder, explosion-proof fiber and FDN, the weight ratio is: 5-8mm brown corundum 10%; 3-5mm brown corundum 10 %; 1-3mm brown corundum 10%; 0-1mm dense corundum 5%; 200 mesh dense corundum 10%; 1-3mm 98% silicon carbide 15%; 0-1mm 98% silicon carbide 15%; 200 mesh 98% silicon carbide 5%; spherical pitch 5%; α-Al 2 O 3 5%; pure calcium aluminate cement 5%; silicon powder 1%; metal silicon powder 1%; Guangxi white mud 2.5%; metal aluminum powder 0.3%; explosion-proof fiber 0.1% and FDN 0.1%.

[0011] The present invention proposes a method for preparing castable for iron storage type tapping chute, which is characterized in that: the method first mixes the above-mentioned various raw materials according t...

Embodiment 2

[0014] A castable for iron storage type tapping chute, characterized in that: the castable is made of brown corundum, dense corundum, silicon carbide, spherical pitch, α-Al 2 O 3 , Pure calcium aluminate cement, silica powder, metal silicon powder, Guangxi white clay, metal aluminum powder, explosion-proof fiber and FDN, the weight ratio can also be: 5-8mm brown corundum 20%; 3-5mm brown Corundum 20%; 1-3mm brown corundum 8%; 0-1mm dense corundum 3%; 200 mesh dense corundum 5%; 1-3mm 98% silicon carbide 10%; 0-1mm 98% silicon carbide 10%; 200 mesh 98% silicon carbide 10%; spherical pitch 2%; α-Al 2 O 3 3%; pure calcium aluminate cement 3%; silicon powder 2%; metal silicon powder 2%; Guangxi white mud 1.8%; metal aluminum powder 0.1%; explosion-proof fiber 0.05% and FDN 0.05%.

[0015] The present invention proposes a method for preparing castable for iron storage type tapping chute, which is characterized in that: the method first mixes the above-mentioned various raw materials ac...

Embodiment 3

[0018] A castable for iron storage type tapping chute, characterized in that: the castable is made of brown corundum, dense corundum, silicon carbide, spherical pitch, α-Al 2 O 3 , Pure calcium aluminate cement, silica powder, metal silicon powder, Guangxi white mud, metal aluminum powder, explosion-proof fiber and FDN, the weight ratio can also be: 5-8mm brown corundum 30%; 3-5mm brown Corundum 30%; 1-3mm brown corundum 5%; 0-1mm dense corundum 1%; 200 mesh dense corundum 3%; 1-3mm 98% silicon carbide 5%; 0-1mm 98% silicon carbide 5%; 200 mesh 98% silicon carbide 8.78%; spherical pitch 1%; α-Al 2 O 3 1%; pure calcium aluminate cement 1%; silica powder 3%; metal silicon powder 3%; Guangxi white mud 3%; metal aluminum powder 0.2%; explosion-proof fiber 0.01% and FDN 0.01%.

[0019] The present invention proposes a method for preparing castable for iron storage type tapping chute, which is characterized in that: the method first mixes the above-mentioned various raw materials accord...

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PUM

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Abstract

The invention discloses an iron-storage type casting material for an iron tapping channel. The casting material is composed of brown corundum, dense corundum, silicon carbide, ball asphalt, alpha-Al2O3, pure calcium aluminate cement, silica micropowder, silicon metal powder, Guangxi white mud, aluminium metal powder, an explosion-proof fiber and FDN. The invention also provides a preparation method of the iron-storage type casting material for the iron tapping channel. The method comprises the steps of mixing the above-mentioned raw materials according to a proportion; stirring the mixture for 10 minutes in a stirring machine; discharging the mixture and packaging. Compared with a conventional technology, the method has the beneficial effects that the casting material is manufactured by employing Al2O3-SiC-C material and a carbon-containing polymer, and has good high-temperature wear resistance, good slag-resistant chemical corrosion performance, high and good oxidation resistance, good thermal shock-resistant stability, good high-temperature volume stability, good explosion resistance, high iron content, high safety coefficient and high slag resistance, sticks no slag iron, is convenient for production, and reduces labor intensity.

Description

【Technical Field】 [0001] The invention relates to the field of refractory materials, in particular to an iron storage type castable for tapping trough and a preparation method thereof. 【Background technique】 [0002] At present, in domestic single taphole blast furnaces, the structure of the tap trough is generally exposed iron trough, and AL is mostly used in material. 2 O 3 -SiC-C iron ditch ramming material. The specific steps of this method are as follows: before ramming, first clean up the site, remove the residual iron in the trench, use tools such as pneumatic picks or steel drills to remove all residual iron in the original trench lining working layer, and use a high-pressure pipe to remove the residual iron in the trench. Blow away the scraps and dust. When ramming, pour the ramming material into the cleaned ditch first, spread the material evenly with a shovel, and repeatedly ramming in layers with a vibrating electric ram or air hammer to make the ditch material Fully...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/66
Inventor 王振江
Owner 王振江
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