Magnesia brick containing antioxidant C-TiN composite powder and method for preparing the same

A composite powder and anti-oxidant technology, which is applied in the field of carbon-containing refractory materials, can solve the problems of reducing the slag erosion resistance of products, achieve the effects of high hardness, prevent oxidation, and improve utilization

Inactive Publication Date: 2006-10-11
UNIV OF SCI & TECH LIAONING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

It will also reduce the slag erosion resistance of the product

Method used

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  • Magnesia brick containing antioxidant C-TiN composite powder and method for preparing the same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Magnesia-carbon bricks containing antioxidant "C-TiN composite powder" contain MgO 82%, C 12%, and TiN 3%.

[0020] The production method of magnesia-carbon bricks containing antioxidant "C-TiN composite powder" includes raw material mixing, molding, and heat treatment. The formula of the magnesia-carbon bricks includes aggregate, matrix, binder and antioxidant. The weight percentages are as follows:

[0021] Fused magnesia 82~84%

[0022] Flake graphite 9~11%

[0023] Binder 2~4%

[0024] Antioxidant 3~5%

[0025] The MgO content of the fused magnesia mentioned therein is ≥97%, and the critical particle size is 5mm;

[0026] Wherein the flake graphite has a C content ≥ 97% and a particle size ≤ 0.15 mm;

[0027] Wherein said binding agent is a thermosetting phenolic resin with a residual carbon content ≥ 45%, which is liquid at normal temperature;

[0028] The antioxidant mentioned therein is C-TiN composite powder, in which TiN≥80%, C≤10%, TiO 2 ≤5%;

[0029] ...

Embodiment 2

[0031] The magnesia carbon brick containing antioxidant "C-TiN composite powder" contains MgO 81%, C 12%, TiN 1.5%, Al 1.5%.

[0032] The production method of magnesia-carbon bricks containing antioxidant "C-TiN composite powder" includes raw material mixing, molding, and heat treatment. The formula of the magnesia-carbon bricks includes aggregate, matrix, binder and antioxidant. The weight percentages are as follows:

[0033] Fused magnesia 82~84%

[0034] Flake graphite 9~11%

[0035] Binder 2~4%

[0036] Antioxidant 3~5%

[0037] The MgO content of the fused magnesia mentioned therein is ≥97%, and the critical particle size is 5mm;

[0038] Wherein the flake graphite has a C content ≥ 97% and a particle size ≤ 0.15 mm;

[0039] Wherein said binding agent is a thermosetting phenolic resin with a residual carbon content ≥ 45%, which is liquid at normal temperature;

[0040] Wherein the antioxidant comprises 60% of C-TiN composite powder and 40% of metal Al powder;

[0...

Embodiment 3

[0043] Magnesia-carbon bricks containing antioxidant "C-TiN composite powder" contain MgO 80-82%, C11-13%, TiN 0.5-2.5%, Al 0.5-2%, Si 0.5-2%.

[0044] The production method of magnesia-carbon bricks containing antioxidant "C-TiN composite powder" includes raw material mixing, molding, and heat treatment. The magnesia-carbon brick raw material formula includes aggregate, matrix, binder, and antioxidant. The weight percentages are as follows:

[0045] Fused magnesia 82~84%

[0046] Flake graphite 9~11%

[0047] Binder 2~4%

[0048] Antioxidant 3~5%

[0049] The MgO content of the fused magnesia mentioned therein is ≥97%, and the critical particle size is 5mm;

[0050] Wherein the flake graphite has a C content ≥ 97% and a particle size ≤ 0.15 mm;

[0051] Wherein said binding agent is a thermosetting phenolic resin, its residual carbon content is ≥ 45%, and it is liquid at normal temperature;

[0052] The antioxidant includes 30-50% of C-TiN composite powder, 20-40% of me...

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Abstract

The invention provides a magnesite-carbon brick containing anti-oxidization agent of C-TiN composite powder, which comprises the following constituents: MgO 70-90%, C 6-22%, TiN 0.5-10%, Al 0-5%, Si 0-5%, and B4C 0-2%, the preparing process comprises raw material mixing, melting, forming and thermally processing.

Description

technical field [0001] The invention relates to a carbon-containing refractory material and a production method thereof, in particular to a magnesia-carbon brick containing antioxidant "C-TiN composite powder" and a production method thereof. Background technique [0002] Magnesia carbon brick is a carbon-containing refractory material widely used in the iron and steel metallurgy industry, mainly used in converters and ladle working lining parts. Existing magnesia-carbon bricks, like other carbon-containing refractory materials, have the disadvantages of poor oxidation resistance and low strength. For this reason, people have studied the introduction of some metal or non-metallic additives into magnesia carbon bricks to prevent carbon oxidation at high temperatures. Commonly used anti-oxidation additives are Al, Si, SiC, B 4 C, etc., but these antioxidants have certain disadvantages, such as adding Al powder and C to generate Al 4 C 3 It is easy to hydrate, and the introd...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/66C04B35/04C04B35/622
Inventor 吴锋李志坚
Owner UNIV OF SCI & TECH LIAONING
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