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

A technology of silicon carbide carbon bricks and torpedo tanks, which is applied in the field of refractory materials, can solve the problems of easy oxidation failure, low service life of middle and low grade bricks, difficult maintenance, etc., achieve good slag iron corrosion resistance, convenient brick matching and masonry, The effect of simple production process

Active Publication Date: 2009-05-27
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

Examples

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Effect test

Embodiment 1

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

[0043] 1. Raw materials:

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

[0045] (2) Original cooking index:

[0046] Bauxite specification is GAL—88

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

[0048] Silicon carbide of which SiC≥97%, Fe 2 O 3 ≤1.2%

[0049] Metallic aluminum of which Al≥98%

[0050] Silicon metal of which Si≥97%

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

[0052] Graphite in which C≥95%, moisture content ≤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 moisture content of each raw material cannot be greater than 0.5%, otherwise, the raw material must be dried before being used for production.

[0056] 2. Production process:

[005...

Embodiment 2

[0075] The second embodiment: It is basically the same as the first embodiment, and the similarities will not be described again. The differences are:

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

Embodiment 3

[0077] The third embodiment: It is basically the same as the first embodiment, and the similarities will not be described again. The differences are:

[0078] Raw material formula: alumina 20%, fused corundum 40%, silicon carbide 18%, graphite 12%, andalusite 5%, chromium oxide 1%, metallic aluminum 0.5%, metallic 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, and particularly relates to an aluminum silicon carbide carbon brick for a torpedo tank and a torpedo tank lining structure. 2. Background technology: [0002] At present, most of the refractory bricks in the lining working layer of the molten iron tank and torpedo tank are made of aluminum silicon carbide carbon brick (ie Al 2 O 3 -SiC-C brick, referred to as ASC brick), the brick has the following main disadvantages: poor oxidation resistance, easy to oxidize and fail during use, causing rapid erosion of slag line and scouring parts, serious slag sticking, and difficult maintenance; low life of middle and low-grade bricks, And the high-grade Al required for life ≥ 1000 times 2 O 3 -SiC-C bricks are expensive and costly. The patent with the authorized application number 01126576.0 discloses a fired aluminum carbon brick for mixing iron cars, which has been adopted in the working layer of some ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
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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