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Protective material for magnesia carbon brick of steel ladle and preparation method and application of protective material

A technology for ladle magnesia-carbon bricks and protective materials, which is applied in the field of protective materials for ladle magnesia-carbon bricks and its preparation, can solve the problems of unfavorable industrialization promotion, large consumption of carbon black and high carbon black price, and achieves good economic benefits, carbon black The effect of less black dosage and lower production cost

Active Publication Date: 2017-11-03
江苏时代鑫新环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The consumption of carbon black in this method is very large, and the price of carbon black is higher, there is the problem of high cost in the use process, does not utilize industrialization promotion

Method used

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  • Protective material for magnesia carbon brick of steel ladle and preparation method and application of protective material
  • Protective material for magnesia carbon brick of steel ladle and preparation method and application of protective material
  • Protective material for magnesia carbon brick of steel ladle and preparation method and application of protective material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] A protective material for ladle magnesia carbon bricks, which contains the following components in terms of mass percentage:

[0041]

[0042] Prepare according to the following method:

[0043] The components of the above formula are mixed and added to the mixer, and water is added to the mixer at a liquid-to-solid ratio of 3:1, and then stirred at a speed of 1500r / min for 10 minutes to obtain a solid-liquid mixed slurry, which is the ladle magnesium carbon Protective materials for bricks.

Embodiment 2

[0045] A protective material for ladle magnesia carbon bricks, which contains the following components in terms of mass percentage:

[0046]

[0047]

[0048] Prepare according to the following method:

[0049] The components of the above formula are mixed and added to the mixer. Water is added to the mixer at a liquid-to-solid ratio of 5:1, and then stirred at a speed of 1200r / min for 12 minutes to obtain a solid-liquid mixed slurry, that is, the ladle magnesium carbon Protective materials for bricks.

Embodiment 3

[0051] A protective material for ladle magnesia carbon bricks, which contains the following components in terms of mass percentage:

[0052]

[0053] Prepare according to the following method:

[0054] The components of the above formula are mixed and added to the mixer, and water is added to the mixer according to the liquid-solid ratio of 4:1, and then stirred at a speed of 500r / min for 15 minutes to obtain a solid-liquid mixed slurry, which is the ladle magnesium carbon Protective materials for bricks.

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Abstract

The invention relates to a protective material for a magnesia carbon brick of a steel ladle and a preparation method and application of the protective material. The protective material comprises the following components by mass percent: 25-40% of kaolin, 20-30% of borax glass powder, 10-20% of titanium dioxide, 5-12% of sodium silicate, 2-10% of polyvinyl alcohol and 2-5% of black carbon. The prepared protective material is molten into a glass-state protective film in the heating process and is isolated from air, so that carbon in the magnesia carbon brick can be prevented from oxidation in the baking process of the steel ladle, generation of a decarburized layer is inhibited, and the service life of the magnesia carbon brick is greatly prolonged. The obtained protective material is cheap and easily accessible in raw material, low in consumption of black carbon and lowered in production cost, is suitable for industrial production and has a wide application prospect and favorable economical benefits.

Description

Technical field [0001] The invention relates to the technical field of metallurgical materials, in particular to a protective material for ladle magnesia carbon bricks, and a preparation method and application thereof. Background technique [0002] Magnesia-carbon bricks are made of high-melting alkaline oxide magnesium oxide (melting point 2800°C) and high-melting carbon materials that are difficult to be infiltrated by slag, and various non-oxide additives are added. A non-burning composite refractory material combined with a carbon binder. Magnesia carbon bricks are mainly used for lining of converters, AC electric arc furnaces, DC electric arc furnaces, and slag lines of ladle. [0003] During the smelting process, the ladle lining needs to be baked before the molten steel is filled. The baking temperature is about 1200°C. Since the magnesia-carbon brick contains carbon material, it will react with oxygen in the air during the baking process to form a decarburized layer with ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/66C04B35/622B22D41/02
CPCB22D41/02C04B35/62222C04B35/66C04B2235/3201C04B2235/3232C04B2235/3427C04B2235/349C04B2235/365C04B2235/424
Inventor 陶再南薛赞鸣
Owner 江苏时代鑫新环保科技有限公司