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Preparing method for anti-oxidization fire-resistant material

A refractory material and anti-oxidation technology, applied in the field of refractory materials, can solve problems such as difficult to apply anti-oxidation coating, easy peeling off of molten metal, loss of bonding force of materials, etc., achieve excellent anti-oxidation performance, low material cost, and preparation method simple effect

Inactive Publication Date: 2017-09-22
HEFEI MINGYOU HIGH TEMPERATURE TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this glassy bonded carbon has two disadvantages: first, it has poor oxidation resistance. The glassy carbon formed after carbonization of phenolic resin begins to oxidize and ablate from 500°C. The oxidation of bonded carbon will cause the material to lose its bonding force and the structure becomes Loose, easy to peel off or be eroded by molten metal; second, low strength, glass brittleness, brittle fracture will occur under certain stress
Some asphalt-impregnated carbon-containing refractory materials are difficult to apply anti-oxidation coatings due to smooth surfaces and limitations in use conditions, and carbon-bonded oxidation occurs easily during baking

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A method for preparing an anti-oxidation refractory material, comprising the following preparation steps:

[0029] a. Put the carbonaceous material and carbonaceous material into the mixer for pre-mixing and stirring for 15 minutes, and then use a ball mill for 50 minutes to make a mixed powder;

[0030] b. Mix and stir polycarbosilane and organic solvent at a stirring speed of 200r / min, and stir until fully dissolved to obtain mixture 1;

[0031] c. Import the mixture powder into the kneader, then add the mixture for kneading, the kneading temperature is 300°C, after kneading for 2 hours, import it into a mold for pressure molding to obtain a semi-finished product;

[0032] d. Put the semi-finished product in the drying room, dry it at 150°C for 3 hours, then pass protective gas into the electric kiln and heat it to 680°C, and keep it warm for 6 hours to get the finished product.

[0033] The anti-oxidation refractory material includes the following raw materials by w...

Embodiment 2

[0042] A method for preparing an anti-oxidation refractory material, comprising the following preparation steps:

[0043] a. Put the carbonaceous material and carbonaceous material into the mixer for pre-mixing and stirring for 15 minutes, and then use a ball mill for 30 minutes to make a mixed powder;

[0044] b. Mix and stir polycarbosilane and organic solvent at a stirring speed of 200r / min, and stir until fully dissolved to obtain mixture 1;

[0045] c. Import the mixture powder into the kneader, then add the mixture for kneading, the kneading temperature is 200°C, after kneading for 2 hours, import it into a mold for press molding to obtain a semi-finished product;

[0046] d. Put the semi-finished product into the drying room, dry it at 1200°C for 2 hours, then pass protective gas into the electric kiln and heat it to 600°C, and keep it warm for 4 hours to get the finished product.

[0047] The anti-oxidation refractory material includes the following raw materials by w...

Embodiment 3

[0056] A method for preparing an anti-oxidation refractory material, comprising the following preparation steps:

[0057] a. Put the carbonaceous material and carbonaceous material into the mixer for pre-mixing and stirring for 15 minutes, and then use a ball mill for 50 minutes to make a mixed powder;

[0058] b. Mix and stir the polycarbosilane and the organic solvent at a stirring speed of 300 r / min, and stir until fully dissolved to obtain a mixture 1;

[0059] c. Import the mixture powder into the kneader, then add the mixture for kneading, the kneading temperature is 300°C, after kneading for 3 hours, import it into a mold for press molding to obtain a semi-finished product;

[0060] d. Put the semi-finished product into the drying room, dry it at 150°C for 3 hours, then pass protective gas into the electric kiln and heat it to 850°C, and keep it warm for 6 hours to get the finished product.

[0061] The anti-oxidation refractory material includes the following raw materi...

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PUM

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Abstract

The invention discloses a preparing method for an anti-oxidization fire-resistant material. The preparing method includes the following steps that a, a carbon-containing material and carbonization matter are put into a material mixing machine, premixed and stirred, and then the mixture is subjected to ball milling through a ball mill to be prepared into mixed powder; b, polycarbosilane and an organic solvent are mixed and stirred, and stirring is carried out to be fully dissolved, and then a first mixture is obtained; c, mixture powder is led into a mixing mill, the first mixture is added, the mixture is mixed, the product is led into a mold and pressed and formed, and a semi-finished product is obtained; d, the semi-finished product is put into a drying chamber and dried, and then is heated and subjected to heat preservation for a period in an electric kiln, and the anti-oxidization fire-resistant material can be obtained. The fire-resistant material prepared with the method has the excellent oxidation resistance, the high strength and the thermal shock resistance, the preparing method is simple, and the material cost is low.

Description

technical field [0001] The invention belongs to the technical field of refractory materials, and in particular relates to a preparation method of an anti-oxidation refractory material. Background technique [0002] In the metallurgical process, the furnace lining, molten steel diversion, and flow controller are often subject to sudden temperature changes, and the refractory materials used in these parts are required to have high thermal shock resistance. Graphite-containing refractory materials (referred to as carbon-containing refractory materials) are widely used in metallurgical processes because graphite can quickly conduct heat when the ambient temperature changes drastically, reduce the internal temperature gradient of the material, and reduce thermal stress, thereby protecting the material from thermal shock and cracking. Parts with strong heat shock. [0003] At present, carbon-containing refractory materials generally use phenolic resin as a binder, and glassy carb...

Claims

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Application Information

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IPC IPC(8): C04B35/66C04B35/52
CPCC04B35/66C04B35/522C04B2235/3208C04B2235/3217C04B2235/3244C04B2235/5244
Inventor 王虎
Owner HEFEI MINGYOU HIGH TEMPERATURE TECH CO LTD
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