Production process for improving fire resistance duration of foamed ceramic partition wall board

A technology of foamed ceramics and production technology, which is applied in the production of ceramic materials, ceramic products, applications, etc., can solve problems such as bursting and rapid expansion of thermal stress, reduce internal stress, improve thermal shock resistance, and increase fire resistance limit time Effect

Inactive Publication Date: 2018-08-14
辽宁罕王环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Generally, there are a large number of closed bubbles in a vacuum and semi-vacuum state inside the foamed ceramic partition board, so it has good thermal insulation performance and heat insulation performance, but when the surface layer is heated rapidly, the glass phase and crystal phase in the foamed ceramics will be formed. Thermal stress expands faster, causing bursting phenomenon

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] A production process for improving the fire resistance limit of foamed ceramic partition boards is as follows: 5 parts of iron tailings with a particle size of less than 0.074 mm, 4 parts of albite with a particle size of less than 0.074 mm, and 0.8 parts of raw materials for the foamed ceramic partition board Zirconia with a particle size of less than 400 mesh, 0.2 parts of silicon carbide with a particle size of less than 0.074mm, add water and ball mill for 8 hours, spray dry to become a 45-mesh powder, spread the 45-mesh powder on a refractory mold lined with ceramic fiber paper, Thickness 65mm, use roller kiln or tunnel kiln, after firing, fire the foamed ceramic blank plate with a thickness of 130mm, the firing system is: heat up at 200°C per hour, and heat up to 1145° C. After keeping warm for 1 hour, quickly cool down to 700°C, then drop to room temperature according to the cooling system of 100°C per hour, complete the firing process of foamed ceramics, and then...

Embodiment 2

[0015] A production process for improving the fire resistance limit of foamed ceramic partition boards is as follows: 5 parts of iron tailings with a particle size of less than 0.074 mm, 4 parts of albite with a particle size of less than 0.074 mm, and 0.8 parts of raw materials for the foamed ceramic partition board Zirconia with a particle size of less than 400 mesh and 0.2 parts of silicon carbide with a particle size of less than 0.074 mm are ball-milled with water for 8 hours, then spray-dried to become a 55-mesh powder, and the 55-mesh powder is spread in a refractory mold lined with ceramic fiber paper, the thickness 60mm, using a roller kiln or a tunnel kiln, after firing, a foamed ceramic blank plate with a thickness of 125mm is fired. 1140°C, keep warm for 1 hour, quickly cool down to 700°C, and then drop to room temperature according to the cooling system of 100°C per hour, complete the firing process of foamed ceramics, and then go through gas cutting to a thickness...

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Abstract

The invention discloses a production process for improving fire resistance duration of a foamed ceramic partition wall board, and belongs to the field of a fire resistance process of a foamed ceramicpartition wall board. The production process comprises the particular production process steps of: after adding water into formula raw materials of the foamed ceramic partition wall board to carry outball milling for 8 hours, carrying out spraying drying to form powder with a specification of 20 to 60 meshes; paving the powder with the specification of 20 to 60 meshes in a fire resistance die cushioned with ceramic fiber paper by a thickness of 60 to 70mm; firing by using a roller kiln or a tunnel kiln to form a foamed ceramic blank board with a thickness of 120 to 140mm; then by gas-cuttingprocessing, enabling the thickness within a range of 100 to 120mm so as to form a building internal partition wall for use. In the formula, zirconium oxide is added, crystal transfer occurs at a temperature of about 1,000 DEG C, and accompanied with the characteristic of volume shrinkage, microscopic cracks are generated in a liquid phase, so that an internal stress of heated foamed ceramic is reduced, and heat impact resistance of a foamed ceramic material is improved. Fire resistance duration is prolonged.

Description

technical field [0001] The invention relates to a production process for improving the fire-resistant limit of foamed ceramic partition boards, and belongs to the field of fire-resistant technology of foamed ceramic partition boards. Background technique [0002] Generally, there are a large number of closed bubbles in a vacuum and semi-vacuum state inside the foamed ceramic partition board, so it has good thermal insulation performance and heat insulation performance, but when the surface layer is heated rapidly, the glass phase and crystal phase in the foamed ceramics are produced. Thermal stress expands rapidly, resulting in bursting phenomenon. Contents of the invention [0003] In view of the above problems, the technical problem to be solved by the present invention is to provide a production process for improving the fire resistance limit of foamed ceramic partition boards. [0004] The production process steps of improving the fire resistance limit of the foamed c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B38/02C04B38/10C04B33/132
CPCC04B33/132C04B38/02C04B38/10C04B2235/3244C04B2235/3472C04B2235/3826C04B2235/96Y02P40/60
Inventor 李庆华杨继野
Owner 辽宁罕王环保科技有限公司
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