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Aggregates used for preparing tin bath bottom bricks and preparation method thereof and tin bath bottom bricks

A tin bath bottom brick and aggregate technology, which is applied in the field of refractory materials, can solve the problems of low bulk density, high apparent porosity, nephrite petrochemical of tin bath bottom bricks, etc., and achieves uniform pore distribution, simple process and good thermal insulation effect. Effect

Active Publication Date: 2019-04-19
HENAN ZHONGYUAN SPECIAL REFRACTORY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The tin bath combined top brick prepared by using the mullite aggregate has the advantages of small thermal conductivity, light weight, and high strength, but due to its low bulk density and high apparent porosity, it is easy to prepare tin bath bottom bricks. The problem of nephelineization of tin bath bottom bricks

Method used

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  • Aggregates used for preparing tin bath bottom bricks and preparation method thereof and tin bath bottom bricks
  • Aggregates used for preparing tin bath bottom bricks and preparation method thereof and tin bath bottom bricks
  • Aggregates used for preparing tin bath bottom bricks and preparation method thereof and tin bath bottom bricks

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preparation example Construction

[0028] The preparation method of the aggregate used to prepare tin bath bottom bricks provided by the present invention comprises the following steps: mixing kaolin, clay, alumina powder and mineralizer with water to make a billet, then curing and drying, and then drying at 1600~ It is fired at 1700°C and crushed to obtain it.

[0029] Preferably, Al in the kaolin 2 o 3 The mass fraction is not less than 40%, Fe 2 o 3 The mass fraction is not more than 2.0%. Further preferably, Fe in the kaolin 2 o 3 The mass fraction is not more than 1.5%. The fineness of the kaolin is not more than 250 mesh.

[0030] Preferably, Al in the clay 2 o 3 The mass fraction is not less than 32%, Fe 2 o 3 The mass fraction is not more than 0.5%. Preferably, the fineness of the clay is not greater than 250 mesh.

[0031] Preferably, the fineness of the alumina powder is not greater than 120 mesh.

[0032] Preferably, the kaolin, clay and mineralizer used in the preparation of the aggreg...

Embodiment 1

[0059] The aggregate used to prepare tin bath bottom bricks in this embodiment is silicon-aluminum clinker, which includes the following components in mass percentage: Al 2 o 3 45.84%, SiO 2 48.95%, Fe 2 o 3 0.79%. The particle size of silicon-aluminum clinker is 0.1-5mm, and the bulk density is 2.30g / cm 3 , the apparent porosity is 5.66%, and the water absorption is 2.35%.

[0060] The aggregate used to prepare tin bath bottom bricks in this embodiment is mainly made of the following raw materials in parts by weight: 25 parts by weight of kaolin fine powder, 60 parts by weight of clay fine powder, 10 parts by weight of industrial alumina fine powder, mineralized Agent 5 parts by weight; The mineralizer that adopts is andalusite.

Embodiment 2

[0062] The aggregate used to prepare tin bath bottom bricks in this embodiment is silicon-aluminum clinker, which includes the following components in mass percentage: Al 2 o 3 45.75%, SiO 2 49.15%, Fe 2 o 3 0.78%. The particle size of silicon-aluminum clinker is 0.1-5mm, and the bulk density is 2.30g / cm 3 , the apparent porosity is 4.25%, and the water absorption is 2.1%.

[0063] The aggregate used to prepare tin bath bottom bricks in this embodiment is mainly made of the following raw materials in parts by weight: 20 parts by weight of kaolin fine powder, 65 parts by weight of clay fine powder, 8 parts by weight of industrial alumina fine powder, mineralized Agent 7 parts by weight; The mineralizer that adopts is kyanite.

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Abstract

The invention relates to aggregates used for preparing tin bath bottom bricks and a preparation method thereof and the tin bath bottom bricks, and belongs to the technical field of refractories. The aggregates are silicon-aluminium clinkers; the mass percentage of Al2O3 in the silicon-aluminium clinkers is 42-47; the volume density of the silicon-aluminium clinkers is 2.1-2.5 g / cm3, the apparent porosity is 0.65-10%. The aggregates have the advantages that the thermal conductivity coefficient, hydrogen diffusivity, elastic modulus and linear expansion coefficient of the tin bath bottom brickscan be reduced, the tin bath bottom bricks are allow to provide with proper volume density and lower apparent porosity, the aggregates have long service life when applied to the tin bath bottom bricks, no nepheline is generated in the using process, the heat preserving effect is good, and the thermal utilization efficiency can be significantly improved.

Description

technical field [0001] The invention relates to an aggregate used for preparing tin bath bottom bricks, a preparation method thereof, and tin bath bottom bricks, belonging to the technical field of refractory materials. Background technique [0002] The tin bath is the key thermal equipment of the float glass production line. During the production process of float glass, the molten glass flows into the tin bath continuously through the liquid channel, and at a certain temperature, relying on the surface tension and gravity, and being pulled by the transmission roller, it is spread on the tin bath. Flatten, polish, thin, float upward. Therefore, the stability of the structure of the tin bath restricts the continuity of production and affects the output and quality of glass. The bottom brick of the tin bath is the key part of the tin bath, and the refractory material used is required to have strong erosion resistance, high slag resistance and good H resistance 2 Diffusibili...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/66C03B18/16
CPCC03B18/16C04B35/66
Inventor 吕志乾刘常华郑松旺郑银龙吕瑞芳孟洪晓申松霞
Owner HENAN ZHONGYUAN SPECIAL REFRACTORY
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