Infrared radiation reinforced composite ceramic fiber board and preparation method

Abstract

The invention discloses an infrared radiation reinforced composite ceramic fiber board. The composite ceramic fiber board is formed by compounding an aluminium silicate-based ceramic fiber board layer and a high infrared emittance layer, wherein the thickness of the high infrared emittance layer is 0.1-2mm, and bulges in periodic array distribution are arranged on the surface of the high infrared emittance layer. A method for preparing the infrared radiation reinforced composite ceramic fiber board disclosed by the invention comprises the steps that powder and gel materials are respectively prepared at first, then a wet preform body of the high infrared emittance layer with the periodic array structures on the surface is made by mixing the powder and the gel materials, finally, the surface of the ceramic fiber board is painted and covered with a glue stock and then the ceramic fiber board is reversed on the wet preform body, and the product is prepared after heating and pressuring. The infrared radiation reinforced composite ceramic fiber board disclosed by the invention has the advantages of being high in strength, firm in combination between the high infrared emittance layer and the aluminium silicate ceramic fiber board layer and capable of working at the temperature above 1100 DEG C for a long time, and having the hemispherical total emittance up to 0.91 at 800 DEG C and the comprehensive energy-saving efficiency above 10%.

Description

technical field

[0001] The invention belongs to the field of energy-saving composite materials for high-temperature kilns, and in particular relates to an infrared radiation-enhanced composite ceramic fiber board material and a preparation method thereof. Background technique

[0002] Ceramic fiber board is a common heat insulation material for high temperature kilns. Ordinary ceramic fiberboards have poor strength, and the surface is prone to slag during use, which limits its application as a heat insulation material for the furnace working face; in addition, the infrared emissivity of ordinary ceramic fiberboards is low. The insulation effect is also reduced. In this regard, Chinese patents CN1552779A and CN101823871A paint a layer of high-emissivity coating material on the inner wall of the furnace, which can enhance the heat insulation effect, but the thin flat coating material is easy to fall off, and the service life of this surface coating is limited Chinese patent ...

Examples

Embodiment 1

[0039] The method for preparing infrared radiation-enhanced composite ceramic fiberboard in this embodiment includes the following steps:

[0040] 1. Preparation of high infrared emissivity layer powder material: a. Weigh 4.5kg of silicon dioxide, 1.5kg of iron oxide, 1kg of manganese oxide, 1kg of zirconia, 1kg of chromium oxide, and 1kg of silicon carbide; b. Add the raw materials to a ball mill and mix them evenly; c. heat-treat the powder obtained in step b at 1100°C for 12 hours; d. ball mill the powder in step c to obtain an ultrafine powder with a particle size of less than 1 micron. The raw materials selected in this step are industrially pure, and the particle size is about 200 mesh.

[0041] 2. Preparation of colloidal material for high infrared emissivity layer: a. Weigh 10kg of water, 2.5kg of water glass, 0.125kg of carboxymethyl cellulose, and 0.5kg of ultrafine silicon dioxide; b. Add the selected raw materials in step a into a mixer and stir to obtain Viscous ...

Embodiment 2

[0046] The method for preparing infrared radiation-enhanced composite ceramic fiberboard in this embodiment includes the following steps:

[0047] 1. Preparation of high infrared emissivity layer powder material: a. Weigh 3.0kg of silicon dioxide, 0.5kg of iron oxide, 1.5kg of manganese oxide, 0.5kg of zirconia, 0.5kg of chromium oxide, and 1.5kg of silicon carbide; b. Add the raw materials selected in step a to a ball mill and mix them evenly; c. heat-treat the powder obtained in step b at 1150°C for 10 hours; d. ball mill the powder in step c to obtain an ultrafine powder with a particle size of less than 1 micron. The raw materials selected in this step are industrially pure, and the particle size is about 200 mesh.

[0048] 2. Preparation of colloidal material for high infrared emissivity layer: a. Weigh 7kg of water, 3.75kg of water glass, 0.4kg of carboxymethyl cellulose, and 0.125kg of ultrafine silicon dioxide; b. Add the selected raw materials in step a into a mixer a...

Embodiment 3

[0053] The method for preparing infrared radiation-enhanced composite ceramic fiberboard in this embodiment includes the following steps:

[0054] 1. Preparation of high infrared emissivity layer powder material: a. Weigh 7.5kg of silicon dioxide, 1kg of iron oxide, 0.5kg of manganese oxide, 1.5kg of zirconia, 1.5kg of chromium oxide, and 0.5kg of silicon carbide; b. The raw materials selected in the step are added to a ball mill to grind and mixed evenly; c. heat-treat the powder obtained in step b at 1050°C for 15 hours; d. ball mill the powder in step c to obtain an ultrafine powder with a particle size of less than 1 micron. The raw materials selected in this step are industrially pure, and the particle size is about 200 mesh.

[0055] 2. Preparation of colloidal material for high infrared emissivity layer: a. Weigh 11kg of water, 1.25kg of water glass, 0.625kg of carboxymethyl cellulose, and 1.0kg of ultrafine silicon dioxide; b. Add the selected raw materials in step a i...

technical field

[0001] The invention belongs to the field of energy-saving composite materials for high-temperature kilns, and in particular relates to an infrared radiation-enhanced composite ceramic fiber board material and a preparation method thereof. Background technique

[0002] Ceramic fiber board is a common heat insulation material for high temperature kilns. Ordinary ceramic fiberboards have poor strength, and the surface is prone to slag during use, which limits its application as a heat insulation material for the furnace working face; in addition, the infrared emissivity of ordinary ceramic fiberboards is low. The insulation effect is also reduced. In this regard, Chinese patents CN1552779A and CN101823871A paint a layer of high-emissivity coating material on the inner wall of the furnace, which can enhance the heat insulation effect, but the thin flat coating material is easy to fall off, and the service life of this surface coating is limited Chinese patent ...

Examples

Embodiment 1

[0039] The method for preparing infrared radiation-enhanced composite ceramic fiberboard in this embodiment includes the following steps:

[0040] 1. Preparation of high infrared emissivity layer powder material: a. Weigh 4.5kg of silicon dioxide, 1.5kg of iron oxide, 1kg of manganese oxide, 1kg of zirconia, 1kg of chromium oxide, and 1kg of silicon carbide; b. Add the raw materials to a ball mill and mix them evenly; c. heat-treat the powder obtained in step b at 1100°C for 12 hours; d. ball mill the powder in step c to obtain an ultrafine powder with a particle size of less than 1 micron. The raw materials selected in this step are industrially pure, and the particle size is about 200 mesh.

[0041] 2. Preparation of colloidal material for high infrared emissivity layer: a. Weigh 10kg of water, 2.5kg of water glass, 0.125kg of carboxymethyl cellulose, and 0.5kg of ultrafine silicon dioxide; b. Add the selected raw materials in step a into a mixer and stir to obtain Viscous ...

Embodiment 2

[0046] The method for preparing infrared radiation-enhanced composite ceramic fiberboard in this embodiment includes the following steps:

[0047] 1. Preparation of high infrared emissivity layer powder material: a. Weigh 3.0kg of silicon dioxide, 0.5kg of iron oxide, 1.5kg of manganese oxide, 0.5kg of zirconia, 0.5kg of chromium oxide, and 1.5kg of silicon carbide; b. Add the raw materials selected in step a to a ball mill and mix them evenly; c. heat-treat the powder obtained in step b at 1150°C for 10 hours; d. ball mill the powder in step c to obtain an ultrafine powder with a particle size of less than 1 micron. The raw materials selected in this step are industrially pure, and the particle size is about 200 mesh.

[0048] 2. Preparation of colloidal material for high infrared emissivity layer: a. Weigh 7kg of water, 3.75kg of water glass, 0.4kg of carboxymethyl cellulose, and 0.125kg of ultrafine silicon dioxide; b. Add the selected raw materials in step a into a mixer a...

Embodiment 3

[0053] The method for preparing infrared radiation-enhanced composite ceramic fiberboard in this embodiment includes the following steps:

[0054] 1. Preparation of high infrared emissivity layer powder material: a. Weigh 7.5kg of silicon dioxide, 1kg of iron oxide, 0.5kg of manganese oxide, 1.5kg of zirconia, 1.5kg of chromium oxide, and 0.5kg of silicon carbide; b. The raw materials selected in the step are added to a ball mill to grind and mixed evenly; c. heat-treat the powder obtained in step b at 1050°C for 15 hours; d. ball mill the powder in step c to obtain an ultrafine powder with a particle size of less than 1 micron. The raw materials selected in this step are industrially pure, and the particle size is about 200 mesh.

[0055] 2. Preparation of colloidal material for high infrared emissivity layer: a. Weigh 11kg of water, 1.25kg of water glass, 0.625kg of carboxymethyl cellulose, and 1.0kg of ultrafine silicon dioxide; b. Add the selected raw materials in step a i...

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