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Anti-corrosion oxidant for refractory materials and preparation method thereof

A refractory material and anti-corrosion technology, which is applied in the field of anti-corrosion oxidant for refractory materials and its preparation, can solve the problems of insufficient anti-corrosion performance and high cost of using antioxidants, achieve good anti-oxidation performance, improve anti-corrosion performance, and good resistance force effect

Active Publication Date: 2017-05-31
湖北斯曼新材料股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide an anti-corrosion oxidant for refractory materials and its preparation method to solve the problems of high cost and insufficient anti-corrosion performance of traditional antioxidants

Method used

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  • Anti-corrosion oxidant for refractory materials and preparation method thereof
  • Anti-corrosion oxidant for refractory materials and preparation method thereof

Examples

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Effect test

Embodiment 1

[0023] Embodiment 1: An anti-corrosion oxidant for refractory materials, which is prepared by mixing the following raw materials according to mass percentage: 80% of silicon carbide micropowder, 10% of alumina micropowder, 8% of borate, and 2% of sodium polyacrylate.

[0024] In the above solution, the silicon carbide micropowder is high-purity silicon carbide, its silicon carbide content is ≥ 97%, and its median particle size is 3 microns.

[0025] In the above solution, the alumina micropowder is calcined α-alumina, with a median particle size of 1 micron.

[0026] In the above scheme, the borate is ammonium borate and zinc borate, wherein ammonium borate is 5% and zinc borate is 3%.

[0027] In the above scheme, the molecular weight of the sodium polyacrylate is 1000.

[0028] The preparation method of the present invention comprises the steps of:

[0029] (1) Grinding the silicon carbide micropowder, alumina micropowder, borate, and sodium polyacrylate through a ball mil...

Embodiment 2

[0031] Embodiment 2: An anti-corrosion oxidant for refractory materials is prepared by mixing the following raw materials according to mass percentage: 85% of silicon carbide micropowder, 7% of alumina micropowder, 3% of borate, and 5% of sodium polyacrylate.

[0032] In the above solution, the silicon carbide micropowder is high-purity silicon carbide, its silicon carbide content is ≥ 97%, and its median particle size is 5 microns.

[0033] In the above solution, the alumina micropowder is calcined α-alumina with a median particle size of 5 microns.

[0034] In the above scheme, the borate is ammonium borate, wherein the mass fraction of ammonium borate is 3%.

[0035] In the above scheme, the molecular weight of the sodium polyacrylate is 2000.

[0036] The preparation method of the present invention comprises the steps of:

[0037] (1) Grinding silicon carbide micropowder, alumina micropowder, borate and sodium polyacrylate through a ball mill for 20 minutes, adding water...

Embodiment 3

[0039] Embodiment 3: An anti-corrosion oxidant for refractory materials, which is prepared by mixing the following raw materials according to mass percentage: 90% of silicon carbide micropowder, 5% of alumina micropowder, 4% of borate, and 1% of sodium polyacrylate.

[0040] In the above solution, the silicon carbide micropowder is high-purity silicon carbide, its silicon carbide content is ≥ 97%, and its median particle size is 3 microns.

[0041] In the above solution, the alumina micropowder is calcined α-alumina with a median particle size of 3 microns.

[0042] In the above scheme, the borate is ammonium borate, wherein the mass fraction of ammonium borate is 4%.

[0043] In the above scheme, the molecular weight of the sodium polyacrylate is 1500.

[0044] The preparation method of the present invention comprises the steps of:

[0045] (1) Grinding the silicon carbide micropowder, alumina micropowder, borate, and sodium polyacrylate through a ball mill for 20 minutes, ...

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Abstract

The invention discloses an anti-erosion oxidizing agent for a refractory material. The anti-erosion oxidizing agent is formed by mixing the following raw materials, by weight, 80-95% of silicon carbide micro-powder, 0-10% of alumina micro-powder, 0-10% of borate and 1-5% of sodium polyacrylat. A preparation method of the anti-erosion oxidizing agent comprises the following steps: (1) co-grinding silicon carbide micro-powder, alumina micro-powder, borate and sodium polyacrylat, adding water and stirring to obtain uniform slurry with solid content being 75-85% and the temperature being 60-70 DEG C; and (2) drying the above uniform slurry so as to obtain an a powdery anti-erosion oxidizing agent with water content being less than 3%. The anti-erosion oxidizing agent has a good oxidation resistant effect on all carbon-containing refractory products. The antioxidation temperature of the anti-erosion oxidizing agent can be as low as 500 DEG C. Anti-erosion performance of a carbon-containing refractory material also can be raised, and the anti-erosion oxidizing agent has good resistance to erosion of molten iron, acid and basic slag.

Description

technical field [0001] The invention relates to the technical field of anti-corrosion oxidants, in particular to an anti-corrosion oxidant for refractory materials and a preparation method thereof. Background technique [0002] The development and popularization of carbon-containing refractory materials is a milestone in the development of refractory material technology and products. Carbon sources (such as graphite, pitch, etc.) are introduced into the refractory material to endow the refractory material with excellent thermal shock resistance and slag iron corrosion resistance. Especially in high-intensity smelting environments, such as converters, carbon-containing refractory materials cannot be replaced by other materials. Many functional refractory properties are also inseparable from the contribution of carbon. However, carbon-containing refractories have a prominent disadvantage, that is, they are easy to oxidize and decarburize at high temperatures. Once the carbo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/66
Inventor 刘学新李文
Owner 湖北斯曼新材料股份有限公司
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