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Alumina base andalusite-SiC-C brick, manufacturing method and its application

A production method, andalusite technology, applied in the field of refractory materials, can solve problems such as abnormal structural peeling of ASC bricks, hidden dangers of safe operation, and melting loss in the impact zone, so as to improve the load conversion point, reduce melting loss, and enhance high temperature wear resistance performance effect

Inactive Publication Date: 2007-10-03
上海柯瑞冶金炉料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this very harsh environment, the ASC bricks of the hot metal tank often have abnormal structural peeling, severe melting loss and crack expansion in the impact area, which pose certain hidden dangers to the safe operation of this large-scale equipment

Method used

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  • Alumina base andalusite-SiC-C brick, manufacturing method and its application
  • Alumina base andalusite-SiC-C brick, manufacturing method and its application
  • Alumina base andalusite-SiC-C brick, manufacturing method and its application

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] Provide alumina-based andalusite-SiC-C bricks containing Al 2 o 3 The mass percent is 51.6, SiC is 12.8, and C is 10.6. The specific ratio is 8-5mm bauxite 12%, 5-3mm bauxite 20%, 3-1mm andalusite 20%, ≤1mm andalusite 15%, ≤1mm silicon carbide 7%, ≤45μm silicon carbide 7%, ≤ 0.15mm flake graphite 10%, ≤75μm fused corundum 6%, α-alumina micropowder 1.4%, metal aluminum powder 0.8%, metal silicon powder 0.8%, phenolic resin binder 3.8%. After weighing according to the formula, it is produced according to the production process and is ready for use. Its indicators are shown in Table 3.

Embodiment 2

[0047] Provide alumina-based andalusite-SiC-C bricks containing Al 2 o 3 The mass percent is 56.7, SiC is 9.5, and C is 8.1. The specific ratio is 8-5mm bauxite 15%, 5-3mm bauxite 18%, 3-1mm andalusite 13%, ≤1mm andalusite 23%, ≤1mm silicon carbide 5%, ≤45μm silicon carbide 5%, ≤ 0.15mm flake graphite 7%, ≤75μm fused corundum 8%, α-alumina micropowder 4%, metal aluminum powder 1.0%, metal silicon powder 1.0%, phenolic resin binder 4.5%. After weighing according to the formula, it is produced according to the production process and is ready for use. Its indicators are detailed in Table 3.

[0048] After testing, the product provided by the present invention is compared with the original product index as shown in table 3:

[0049] project

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Abstract

An alumine-based andalusite-SiC-C brick used for the 300-ton molten iron ladle with long service life features that two kinds of andalusite are used to take part in mullite reaction to form the mullite network frame, and Al powder and Si powder are used for improving its antioxidizing performance and medium-and high-temp physical properties. Its preparing process includes pugging, shaping, baking, etc.

Description

technical field [0001] The invention relates to a refractory bauxite-based andalusite-SiC-C brick for the inner lining of a molten iron tank, a production method and its application, in particular to a brick made of super-grade high-alumina bauxite, high-quality andalusite, silicon carbide, and flake graphite. The invention relates to an alumina-based andalusite-SiC-C brick prepared by gradation preparation of sintered alumina and other particles and fine powder, and a preparation method thereof, belonging to the field of refractory materials. Background technique [0002] The hot metal tank is a large-scale equipment for holding and transporting high-temperature molten iron. Earlier, the hot metal tank was only used as a container for the transportation and storage of molten iron. It was generally built with clay bricks, high-alumina bricks or andalusite bricks. For strong molten iron, high-alumina bricks with high corundum content are used, and andalusite carbon bricks and...

Claims

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Application Information

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IPC IPC(8): C04B35/66C04B35/103
Inventor 何晓俊王礼玮邢建辉李华坚
Owner 上海柯瑞冶金炉料有限公司
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