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Zirconium mullite castable for waste incineration kiln and preparation process thereof

A zircon mullite and waste incineration technology, which is applied in the field of castables, can solve the problems of unsuitable gates and poor thermal shock resistance, and achieve outstanding thermal shock resistance, good thermal shock resistance, and simple firing process effective effect

Inactive Publication Date: 2020-04-07
长兴兴鹰新型耐火建材有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the castable in this invention patent has poor thermal shock resistance and is not suitable for gates

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] A zirconia-mullite castable for waste incineration kiln, comprising the following components: zirconia-mullite particles, zirconia-mullite hollow spheres, zirconia-mullite micropowder, silicon carbide micropowder, alumina micropowder, pure alumina Calcium cement, explosion-proof steel fiber, pore-retaining agent that volatilizes after heating and retains pores to increase the thermal shock resistance of the castable, and thermal expansion coefficient retarder.

[0032] The particle size of the zirconium-mullite hollow spheres is 0.08mm, and the volume of the hollow structure in the middle accounts for 45% of the total volume.

[0033] The pore-retaining agent includes polytriallyl isocyanurate, vinyltriethoxysilane and tetrabutyl orthotitanate for bonding and crosslinking, and the mixing preparation method of the pore-retaining agent is sequentially Include the following steps:

[0034] S1. Add all vinyltriethoxysilane, 50% polytriallyl isocyanurate and 50% tetrabutyl ...

Embodiment 2

[0047] A zirconia-mullite castable for waste incineration kiln, comprising the following components: zirconia-mullite particles, zirconia-mullite hollow spheres, zirconia-mullite micropowder, silicon carbide micropowder, alumina micropowder, pure alumina Calcium cement, explosion-proof steel fiber, pore-retaining agent that volatilizes after heating and retains pores to increase the thermal shock resistance of the castable, and thermal expansion coefficient retarder.

[0048] The particle size of the zirconium-mullite hollow spheres is 0.09mm, and the volume of the hollow structure in the middle accounts for 50% of the total volume.

[0049] The pore-retaining agent includes polytriallyl isocyanurate, vinyltriethoxysilane and tetrabutyl orthotitanate for bonding and crosslinking, and the mixing preparation method of the pore-retaining agent is sequentially Include the following steps:

[0050] S1. Add all vinyltriethoxysilane, 50% polytriallyl isocyanurate and 50% tetrabutyl ...

Embodiment 3

[0063] A zirconia-mullite castable for waste incineration kiln, comprising the following components: zirconia-mullite particles, zirconia-mullite hollow spheres, zirconia-mullite micropowder, silicon carbide micropowder, alumina micropowder, pure alumina Calcium cement, explosion-proof steel fiber, pore-retaining agent that volatilizes after heating and retains pores to increase the thermal shock resistance of the castable, and thermal expansion coefficient retarder.

[0064] The particle size of the zirconium-mullite hollow spheres is 0.1mm, and the volume of the hollow structure in the middle accounts for 65% of the total volume.

[0065] The pore-retaining agent includes polytriallyl isocyanurate, vinyltriethoxysilane and tetrabutyl orthotitanate for bonding and crosslinking, and the mixing preparation method of the pore-retaining agent is sequentially Include the following steps:

[0066] S1. Add all vinyltriethoxysilane, 50% polytriallyl isocyanurate and 50% tetrabutyl o...

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Abstract

The invention belongs to the technical field of castables and particularly relates to a zirconium mullite castable for a waste incineration kiln and a preparation process thereof. According to the invention, a pore-forming agent and a thermal expansion coefficient retarding agent are added into a zirconium mullite system to achieve the effect of outstanding thermal shock resistance of the castable, and the pore-forming agent and the thermal expansion coefficient retarding agent are combined with a proper castable main body material to ensure the basic castable use effect. The castable providedby the invention has good thermal shock resistance, is suitable for the waste incineration kiln, especially kiln mouth flashboard parts, and also has the advantages of basic wear resistance, high temperature resistance and erosion resistance, and the preparation process of the castable and the firing process of precast blocks are simple, effective, energy-saving and efficient.

Description

technical field [0001] The invention belongs to the technical field of castables, and in particular relates to a zirconium-mullite castable for waste incineration kilns and a preparation process thereof. Background technique [0002] Castables for waste incineration kilns, due to the specific working conditions of waste incineration, require them to be resistant to thermal shock and The high-strength feature of the structure, especially the gate part that is often opened and closed, is beyond the reach of the existing general-purpose castables. Therefore, there is an urgent need for a special castable for the manufacture of waste incineration kilns in the market. . [0003] The patent publication number is CN 107512914A, and the Chinese invention patent with the publication date of 2017.12.26 discloses a tertiary damper castable. The weight ratio of its components is: 80 high alumina bauxite homogenized material: 45-51% ; 85 high alumina homogenized material: 200 mesh, 15-...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/66
CPCC04B35/66C04B2235/3463C04B2235/3826C04B2235/3217C04B2235/3222C04B2235/5216C04B2235/483C04B2235/48
Inventor 许高山国强王强
Owner 长兴兴鹰新型耐火建材有限公司
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