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Alumina-silicon carbide-carbon brick for torpedo tank and torpedo tank lining structure therewith

A technology for silicon carbide carbon bricks and torpedo tanks, applied in the field of refractory materials, can solve the problems of easy oxidation failure, low service life of medium and low grade bricks, difficult maintenance, etc. Simple production process

Active Publication Date: 2007-11-07
巩义市第五耐火材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, aluminum silicon carbide carbon bricks (Al 2 o 3 -SiC-C bricks, referred to as ASC bricks), this brick has the following main disadvantages: poor oxidation resistance, easy to oxidize and fail during use, resulting in fast erosion of slag lines and scoured parts, serious sticky slag, and difficult maintenance; low-grade bricks have low service life, And the high-grade Al required for life ≥ 1000 times 2 o 3 - SiC-C bricks are expensive and costly
Therefore, several suppliers are currently supplying Al for Shougang and its relocation plant 2 o 3 - SiC-C bricks, the use effect is poor (less than 500 furnaces), and the service life is reduced by half or more than before. Therefore, a new type of refractory material suitable for the torpedo tanks of Shougang and the relocation factory has been developed to improve its service life. New products are imperative

Method used

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  • Alumina-silicon carbide-carbon brick for torpedo tank and torpedo tank lining structure therewith
  • Alumina-silicon carbide-carbon brick for torpedo tank and torpedo tank lining structure therewith
  • Alumina-silicon carbide-carbon brick for torpedo tank and torpedo tank lining structure therewith

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Effect test

Embodiment 1

[0042]Example 1: Aluminum silicon carbide carbon bricks for torpedo tanks

[0043] 1. Raw materials:

[0044] (1) Raw material formula: bauxite 10%, fused corundum 50%, silicon carbide 3%, graphite 12%, andalusite 10%, chromium oxide 5%, metal aluminum 3%, metal silicon 3%, phenolic resin 4% .

[0045] (2) Physical and chemical indicators of raw materials:

[0046] Bauxite specification is GAL-88

[0047] Fused corundum of which Al 2 o 3 ≥95%

[0048] Silicon carbide Wherein SiC≥97%, Fe 2 o 3 ≤1.2%

[0049] Aluminum metal, of which Al≥98%

[0050] Metal silicon wherein Si≥97%

[0051] Chromium oxide of which Cr 2 o 3 ≥98.5%

[0052] Graphite Among them, C≥95%, moisture≤0.5%, volatile content<2.0%

[0053] Andalusite of which Al 2 o 3 ≥55%

[0054] Phenolic resin solid content ≥ 75%, fixed carbon ≥ 45%

[0055] The water content of each raw material should not exceed 0.5%, otherwise, the raw materials must be dried before being used for production.

[0056] 2...

Embodiment 2

[0075] Embodiment two: basically the same as embodiment one, the similarity is no longer described, and the difference is:

[0076] Raw material formula: bauxite 60%, fused corundum 10%, silicon carbide 20%, graphite 2%, andalusite 3%, chromium oxide 0.5%, metal aluminum 0.2%, metal silicon 0.3%, phenolic resin 4%.

Embodiment 3

[0077] Embodiment three: basically the same as embodiment one, the similarity is no longer described, and the difference is:

[0078] Raw material formula: bauxite 20%, fused corundum 40%, silicon carbide 18%, graphite 12%, andalusite 5%, chromium oxide 1%, metal aluminum 0.5%, metal silicon 0.5%, phenolic resin 3%.

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Abstract

The present invention discloses one kind of alumina-silicon carbide-carbon brick for torpedo tank and the torpedo tank lining structure therewith. The alumina-silicon carbide-carbon brick is produced with the materials including bauxite 10-60 wt%, electromelting corundum 10-50 wt%, silicon carbide 3-20 wt%, graphite 2- 20 wt%, chrome 0.5-5 wt%, metal aluminum 0.2-3 wt%, metal silicon 0.2-3 wt%, binding agent 3-5 wt% and andalusite 3-10 wt%. The brick is suitable for use in torpedo tank, and has high iron slag erosion resistance, high antioxidant capacity and high heat shock stability.

Description

1. Technical field: [0001] The invention belongs to the field of refractory materials, in particular to an aluminum silicon carbide carbon brick for a torpedo tank and a torpedo tank lining structure. 2. Background technology: [0002] At present, aluminum silicon carbide carbon bricks (Al 2 o 3 -SiC-C bricks, referred to as ASC bricks), this brick has the following main disadvantages: poor oxidation resistance, easy to oxidize and fail during use, resulting in fast erosion of slag lines and scoured parts, serious sticky slag, and difficult maintenance; low-grade bricks have low service life, And the high-grade Al required for life ≥ 1000 times 2 o 3 - SiC-C bricks are expensive and costly. The authorized application number 01126576.0 discloses a fired aluminum-carbon brick for mixed-iron vehicles, which is used in the working layer of some mixed-iron vehicles. The disadvantage of this aluminum-carbon brick is that it has poor corrosion resistance to molten iron and slag...

Claims

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Application Information

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IPC IPC(8): C04B35/66C04B35/10C04B35/634C21C1/06B22D41/02
Inventor 校松波赵永安李树森张晓雷李明欢张灿星
Owner 巩义市第五耐火材料有限公司
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