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Main ditch self-flowing anti-blowout pour material of main channel and construction method thereof

A castable and main channel technology, applied in the field of refractory materials and its construction, can solve the problems of high labor intensity, toxic and harmful smoke and dust of asphalt and resin, etc., and achieve the effect of simple construction method, good fluidity, and reduced labor intensity of workers

Active Publication Date: 2012-06-13
WUGANG REFRACTORY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the labor intensity of the maintenance workers for the iron hook in front of the blast furnace with a single tap hole made of ramming material is too high, and the high-heat environment has caused many unsafe factors, and there is also the problem of poisonous and harmful smoke from asphalt and resin.

Method used

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  • Main ditch self-flowing anti-blowout pour material of main channel and construction method thereof
  • Main ditch self-flowing anti-blowout pour material of main channel and construction method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Raw material composition (parts by weight): fused low-carbon brown corundum 60, silicon carbide 30, binder 3, superfine powder 7, antioxidant 0.2, anti-explosion agent 1.55, water reducing agent 0.25.

[0027] Among them, the particle size composition of fused low-carbon brown corundum is (mass percentage): 8mm≥C>5mm accounts for 40%, 5mm≥D>3mm accounts for 20%, E≤3mm accounts for 40%; silicon carbide particle size Composition (mass percentage): 1mm≥F>0.074mm accounts for 50%, 0.074mm≥G>0.045mm accounts for 40%, H≤0.045mm accounts for 10%; ultrafine powder is Al 2 o 3 Micropowder, SiO 2 A mixture of fine powder and silicon carbide fine powder, the weight ratio of which is 3:2:1; metal Si powder and B in the antioxidant 4 The mass ratio of C micropowder is 10: 1; In the explosion-proof agent, the weight ratio of metal Al powder and explosion-proof fiber is 3: 1, wherein the Al powder is composed of (percentage by weight), particle size A accounts for 35%, and particle ...

Embodiment 2

[0030] Raw material composition (parts by weight): fused low-carbon brown corundum 70, silicon carbide 20, binder 2, superfine powder 5, antioxidant 0.5, explosion-proof agent 1, water reducer 0.2.

[0031]Among them, the particle size composition of fused low-carbon brown corundum is (mass percentage): 8mm≥C>5mm accounts for 20%, 5mm≥D>3mm accounts for 30%, E≤3mm accounts for 50%; silicon carbide particle size Composition (mass percentage): 1mm ≥ F > 0.074mm accounted for 60%, 0.074mm ≥ G > 0.045mm accounted for 20%, H ≤ 0.045mm accounted for 20%; ultrafine powder is Al 2 o 3 Micropowder, SiO 2 The mixture of fine powder and silicon carbide fine powder, the weight ratio is 2:1:1; metal Si powder and B in the antioxidant 4 The mass ratio of C micropowder is 9: 1; Metal Al powder, anti-explosion fiber weight ratio are 2: 1 in the explosion-proof agent, and wherein Al powder is made up of (percentage by weight), particle diameter A accounts for 20%, particle diameter B account...

Embodiment 3

[0034] Raw material composition (parts by weight): fused low-carbon brown corundum 80, silicon carbide 15, binder 1, superfine powder 2, antioxidant 2.2, anti-explosion agent 0.1, water reducing agent 0.1.

[0035] Among them, the particle size composition of fused low-carbon brown corundum is (mass percentage): 8mm≥C>5mm accounts for 30%, 5mm≥D>3mm accounts for 40%, E≤3mm accounts for 30%; silicon carbide particle size Composition (mass percentage): 1mm ≥ F > 0.074mm accounted for 40%, 0.074mm ≥ G > 0.045mm accounted for 30%, H ≤ 0.045mm accounted for 30%; ultrafine powder is Al 2 o 3 Micropowder, SiO 2 A mixture of fine powder and silicon carbide fine powder, the weight ratio of which is 3:2:1; metal Si powder and B in the antioxidant 4 The ratio of C micropowder is 11: 1; Metal Al powder, anti-explosion fiber weight ratio are 4: 1 in the explosion-proof agent, and wherein Al powder is made up of (percentage by weight), particle size A accounts for 30%, and particle size B...

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Abstract

The invention relates to a main ditch self-flowing anti-blowout pour material and a construction method thereof, which solve the problems that an existing main ditch pour material is long in maintaining and baking time and incapable of performing quick baking after pouring so as to cause blowout, reduce material strength and shorten service life. The technical scheme is that the main ditch self-flowing anti-blowout pour material comprises, by weight, 60-80 parts of electric smelting low-carbon brown fused alumina, 15-30 parts of silicon carbide, 1-3 parts of binding agent, 2-7 parts of ultramicro powder, 0.2-2.2 parts of antioxidant, 0.1-1.55 parts of anti-blowout agent and 0.1-0.25 part of water reducing agent. The main ditch self-flowing anti-blowout pour material is low in cost, simplein ingredients and construction method, short in baking time, high in material strength and long in service life.

Description

technical field [0001] The invention relates to a refractory material and a construction method thereof, in particular to a main ditch self-flowing explosion-proof pouring material and a construction method thereof. Background technique [0002] The iron trough of modern large-scale blast furnace generally adopts low cement combined Al 2 o 3 -SiC-C low-quality cement castable, the material is safe to use, has a long life, less consumption, convenient construction and maintenance, and is an important guarantee for the stable and smooth production of the blast furnace. However, the biggest problem with this material is that it takes a long time to maintain and bake after pouring, and it cannot be baked quickly, otherwise it will cause bursting and reduce the strength and service life of the material. For medium and small blast furnaces with double iron ports and single iron ports, the main trench needs to be quickly repaired, and the construction time is short, so it is impo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/66
Inventor 何见林龚仕顺洪学勤田先明雷中兴张中顺
Owner WUGANG REFRACTORY CO LTD
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