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Ternary composite self-repairing unfired sliding plate brick and preparation method thereof

A ternary composite, sliding brick technology, applied in the field of refractory materials, can solve the problems of accelerating the melting loss of refractory materials, and achieve the effect of slowing down the damage speed, compact structure and high purity

Active Publication Date: 2022-01-28
MAANSHAN LIER KAIYUAN NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, its defect is that Al and carbon react preferentially during heating, producing Al4C3 on the surface of the refractory, and then Al evaporates from the particles to form pores, two pores It will accelerate the melting loss of refractory materials, and the Al4C3 produced at the same time is very easy to hydrate

Method used

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  • Ternary composite self-repairing unfired sliding plate brick and preparation method thereof
  • Ternary composite self-repairing unfired sliding plate brick and preparation method thereof
  • Ternary composite self-repairing unfired sliding plate brick and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0070] A ternary composite self-repairing non-fired sliding brick of this embodiment, the components of the formula and their mass parts are:

[0071]

[0072] Furthermore, the ternary composite self-repairing non-burning sliding brick of this embodiment is prepared by using the above-mentioned raw materials and proportioning, and the steps are as follows:

[0073] (1) Ingredients of pellets: mix pellets according to the mass of raw materials; 5 parts of 3-1mm large crystal fused magnesia, 25 parts of 2-1mm large crystal fused magnesia, 1-0.5mm large crystal fused magnesia Sand 15 parts, 0.5 ~ 0mm large crystal fused magnesia 10 parts,

[0074] (2) Premixed powder: 18 parts of composite powder 200 mesh large crystal fused magnesia, 1 part of -197 graphite, 0.5 part of Al4SiC4 micropowder, 0.5 part of nano silicon carbide micropowder, 6 parts of 325 mesh metal Al powder, 200 0.5 parts of metal Si powder, 1.5 parts of 325 mesh metal titanium powder, 1.5 parts of boron carbid...

Embodiment 2

[0082] In this example, the formula of Example 2 shown in Table 1 below is used to prepare ternary composite self-repairing non-fired sliding bricks, and the parameter conditions of the preparation method are slightly different. The steps are:

[0083] (1) Ingredients of pellets: mix pellets according to the mass of raw materials; 10 parts of 3-1mm large crystal fused magnesia, 23 parts of 2-1mm large crystal fused magnesia, 1-0.5mm large crystal fused magnesia Sand 12 parts, 0.5 ~ 0mm large crystal fused magnesia 7 parts.

[0084] (2) Premixed powder: 18 parts of composite powder 200 mesh large crystal fused magnesia, 2 parts of -197 graphite, 1 part of Al4SiC4 micropowder, 0.5 part of nano silicon carbide micropowder, 5 parts of 325 mesh metal Al powder, 200 1 part of metallic Si powder, 3 parts of 325 mesh metallic titanium powder, 1 part of boron carbide, and 1 part of silicon boride were dry-mixed for 30 minutes under a vacuum mixer to disperse each fine powder component...

Embodiment 3

[0092] In this example, the formula of Example 2 shown in Table 1 below is used to prepare ternary composite self-repairing non-fired sliding bricks, and the parameter conditions of the preparation method are slightly different. The steps are:

[0093] (1) Ingredients of pellets: mix pellets according to the mass of raw materials; 8 parts of 3-1mm large crystal fused magnesia, 22 parts of 2-1mm large crystal fused magnesia, 1-0.5mm large crystal fused magnesia Sand 13 parts, 0.5 ~ 0mm large crystal fused magnesia 5 parts.

[0094] (2) Premixed powder: 20 parts of composite powder 200 mesh large crystal fused magnesia, 3 parts of -197 graphite, Al 4 SiC 4 1.5 parts of fine powder, 1.5 parts of nano silicon carbide powder, 8 parts of 325 mesh metal Al powder, 1.5 parts of 200 mesh metal Si powder, 4.5 parts of 325 mesh metal titanium powder, 0.5 part of boron carbide, 0.5 part of silicon boride and dry under vacuum mixer Mix for 30 minutes to disperse the fine powder componen...

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Abstract

The invention discloses a ternary composite self-repairing unfired sliding plate brick and a preparation method thereof. The ternary composite self-repairing unfired sliding plate brick is prepared from the following components in percentage by mass: 5 to 10 parts of macrocrystalline fused magnesite with the particle size of 3 to 1mm, 15 to 25 parts of macrocrystalline fused magnesite with the particle size of 2 to 1mm, 5 to 15 parts of macrocrystalline fused magnesite with the particle size of 1 to 0.5 mm, 5 to 10 parts of macrocrystalline fused magnesite with the particle size of 0.5 to 0mm, 12 to 20 parts of 200-mesh macrocrystalline fused magnesite, 1 to 4 parts of -197 graphite, 0.5 to 3 parts of Al4SiC4 micro powder, 0.5 to 2 parts of nano SiC micro powder, 3 to 8 parts of 325-mesh metal Al powder, 0.5 to 3 parts of 200-mesh metal Si powder, 0.5 to 2 parts of boron carbide, 0.5 to 1 part of silicon boride, 2 to 4 parts of thermosetting phenolic resin and 2 to 4 parts of organic silicon resin. The ternary composite self-repairing sliding plate brick has a self-repairing function when being used at high temperature, and the oxidation resistance and high-temperature stability of a sliding plate are remarkably improved.

Description

technical field [0001] The invention belongs to the technical field of refractory materials, and in particular relates to a ternary composite self-repairing sliding brick and a preparation method thereof, and also relates to a manufacturing method of the above-mentioned sliding brick. Background technique [0002] As a functional refractory material to control the flow of molten steel, the sliding nozzle can precisely adjust the flow of water from the ladle to the continuous casting tundish, so that the inflow and outflow of molten steel can be balanced, so that the continuous casting operation is easier to control, and it is indispensable in smelting part. Since the sliding nozzle plate is a part that controls the flow of molten steel, its operating temperature is as high as 1600°C, so it is required to have extremely high performance, and it needs to be able to cope with various harsh service conditions in terms of materials, such as repeated thermal shock and wear, molten...

Claims

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Application Information

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IPC IPC(8): C04B35/66C04B35/043B22D41/32
CPCC04B35/043B22D41/32C04B2235/78C04B2235/9607C04B2235/3817C04B2235/404C04B2235/425C04B2235/3826C04B2235/5454C04B2235/402C04B2235/428C04B2235/3821C04B2235/3804
Inventor 徐昆波原慧余西平张远红赵锋
Owner MAANSHAN LIER KAIYUAN NEW MATERIAL
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