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A kind of ladle castable containing graphene and using method

A technology of ladle casting and graphene, applied in the field of refractory materials, to achieve the effect of improving corrosion resistance and thermal stability, and satisfying wetting properties

Active Publication Date: 2022-08-05
SHANGHAI BAOSTEEL IND TECHNOLOGICAL SERVICE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] However, the existing graphene applications are all shaped products, and the introduction of graphene is also introduced into the preparation system of refractory materials in the form of powder

Method used

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  • A kind of ladle castable containing graphene and using method
  • A kind of ladle castable containing graphene and using method
  • A kind of ladle castable containing graphene and using method

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Embodiment Construction

[0023] The graphene-containing ladle castable of the present invention comprises the following components in parts by weight: 75-82 parts of white corundum or tabular corundum, 8-12 parts of α-active alumina fine powder, 3-7 parts of magnesia fine powder, 3 to 6 parts of pure calcium aluminate cement, 0.20 to 0.30 parts of additives, and 0.05 to 0.1 parts of graphene; wherein, graphene is introduced into the castable in the form of slurry, the slurry uses water as the solvent, and the graphene in the slurry It is 3-5 parts, water is 93-95 parts, dispersant is 1-2 parts, and the viscosity of the slurry is less than or equal to 2500mpa·s.

[0024] Preferably, the specific surface area of ​​the graphene is 200-500m 2 / g.

[0025] Preferably, the composition ratio of the white corundum or tabular corundum is:

[0026] White corundum or tabular corundum with particle size ≥5mm 15~25 wt%

[0027] White corundum or tabular corundum with a particle size of 5~1mm 23~33 wt%

[0028]...

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Abstract

The invention discloses a graphene-containing ladle castable and a method of use. The castable comprises white corundum or tabular corundum, α-activated alumina fine powder, magnesia fine powder, pure calcium aluminate cement, additives and graphene; Among them, graphene is introduced into the castable in the form of slurry, and the slurry uses water as a solvent. In the slurry, 3-5 parts of graphene, 93-95 parts of water, 1-2 parts of dispersant, and The viscosity is less than or equal to 2500mpa·s; in this method, the above-mentioned solid phase raw materials are stirred and mixed according to the components and then packed in bags for later use. During on-site stirring, the graphene water-based slurry is added, fully stirred and mixed, and then poured into molding. The castable and the using method introduce graphene into the amorphous refractory material, meet the wetting performance of the water slurry system, and improve the corrosion resistance and thermal stability of the refractory material.

Description

technical field [0001] The invention relates to the field of refractory materials, in particular to a graphene-containing ladle castable and a method for using the same. Background technique [0002] Carbon materials are difficult to be wetted by slag liquid at high temperature. After carbon is introduced into oxides to make carbon-containing refractories, the intrusion of slag can be significantly inhibited, thereby preventing the erosion caused by slag. Secondly, carbon materials have good thermal shock stability. properties, depending on its low coefficient of thermal expansion and high thermal conductivity. Taking advantage of the characteristics of carbon materials, carbon-containing refractories with a carbon content of 15 to 20% basically solve the slag corrosion and spalling caused by temperature changes. Due to the coexistence of oxides and carbon, it produces good slag corrosion resistance and thermal shock resistance. The refractory material, which is an epoch-ma...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/66B22D41/02
CPCC04B35/66B22D41/02C04B2235/3206C04B2235/3217C04B2235/425
Inventor 邱文冬阮国智鲍戟欧阳军华赵玉喜崔秀君
Owner SHANGHAI BAOSTEEL IND TECHNOLOGICAL SERVICE
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