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Zirconium oxide fire-resistant material and preparation process thereof

A refractory material and preparation technology, which is applied in the field of refractory materials, can solve problems such as difficult firing and difficult to guarantee material properties, and achieve the effects of good thermal shock stability, improved compactness and thermal shock performance, and enhanced toughness

Inactive Publication Date: 2013-09-18
ZHEJIANG IRON LION HIGH TEMPERATURE MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The zirconia refractory material provided by the present invention aims to overcome the disadvantages of difficult firing and difficult guarantee of material properties in the prior art

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Zirconia refractory materials, including fused monoclinic zirconia, the mass is 30% pre-fired material of fused monoclinic zirconia, the mass is magnesia with 2.5% fused monoclinic zirconia, and the mass is fused monoclinic zirconia Zirconium 0.2% yttrium oxide, mass of fused monoclinic zirconia 0.15% barium oxide, mass of fused monoclinic zirconia 6% binder;

[0034] The formula of the pre-fired material is: fused monoclinic zirconia, and the quality is 2.5% magnesia of the fused monoclinic zirconia in the pre-fired material;

[0035] The formula of the binding agent is: 4% industrial glycerin, 3% industrial ethanol, 10% polyvinyl alcohol, and the rest are water;

[0036] The requirements for fused monoclinic zirconia in the above formula are: the zirconia content in fused monoclinic zirconia is required to be greater than 99%, and the particle size is required to have a D50 of 6 microns.

[0037] The preparation technology of zirconia refractory material comprises th...

Embodiment 2

[0053] Zirconia refractory materials, including fused monoclinic zirconia, the mass is fused monoclinic zirconia 50% pre-fired material, the mass is fused monoclinic zirconia 4% magnesium carbonate, the mass is fused monoclinic zirconia Yttrium nitrate with 0.5% zirconium, barium carbonate with a mass of 0.2% fused monoclinic zirconia, and a binder with a mass of 7% fused monoclinic zirconia;

[0054] The pre-fired material comprises: fused monoclinic zirconia, magnesium carbonate whose quality is 4% of fused monoclinic zirconia in the pre-fired material;

[0055] The binding agent includes: 3% industrial glycerin, 4% industrial ethanol, 9% polyvinyl alcohol, and the rest are water;

[0056] The requirements for fused monoclinic zirconia in the above formula are: the zirconia content in fused monoclinic zirconia is required to be greater than 99%, and the particle size is required to have a D50 of 3 microns.

[0057]The preparation technology of zirconia refractory material c...

Embodiment 3

[0073] Zirconia refractory materials, including fused monoclinic zirconia, the mass is fused monoclinic zirconia 40% pre-fired material, the mass is fused monoclinic zirconia 3% magnesium hydroxide, the mass is fused monoclinic zirconia Zirconia 0.4% yttrium oxide, mass of fused monoclinic zirconia 0.1% barium phosphate, mass of fused monoclinic zirconia 8% binder;

[0074] The formula of the pre-fired material is: fused monoclinic zirconia, magnesium hydroxide whose quality is 3% of the fused monoclinic zirconia in the pre-fired material;

[0075] The formula of the binding agent is: 5% industrial glycerin, 5% industrial ethanol, 10% polyvinyl alcohol, and the rest are water;

[0076] The requirements for fused monoclinic zirconia in the above formula are: the zirconia content in fused monoclinic zirconia is required to be greater than 99%, and the particle size is required to have a D50 of 5 microns.

[0077] The preparation technology of zirconia refractory material compri...

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Abstract

The invention relates to a fire-resistant material, and particularly relates to a zirconium oxide fire-resistant material and a preparation process thereof. The zirconium oxide fire-resistant material provided by the invention has good heat shock stability because electric-smelting monoclinic zirconium oxide has better fracture toughness and strength, and can further play a stabilizing role on the electric-smelting monoclinic zirconium oxide, improve the heat expansion coefficient of the electric-smelting monoclinic zirconium oxide, enhance the toughness of the electric-smelting monoclinic zirconium oxide, outstandingly enhance the heat shock stability of a product and reduce the firing temperature of the electric-smelting monoclinic zirconium oxide through the addition of yttrium oxide or yttrium nitrate and barium oxide or barium carbonate or barium phosphate, thereby reducing the energy consumption and enlarging the firing range. The preparation process of the zirconium oxide fire-resistant material, which is provided by the invention, has the advantage that the fire-resistant material has the characteristic of crack-growth stability because a pre-burned material has very excellent heat shock property and compactness by being subjected to activated treatment at a temperature lower than burning temperature, and the compactness, heat shock property and the mechanical property of the fire-resistant material are enhanced.

Description

technical field [0001] The invention relates to a refractory material, in particular to a zirconia refractory material and a preparation process thereof. Background technique [0002] Zirconia has excellent physical and chemical properties and a high melting point. High-purity dense zirconia products have the advantages of high service temperature, resistance to molten liquid erosion, erosion resistance, not easy to dissolve, and good chemical stability. It is a widely used high performance refractory products. [0003] At present, semi-stable or fully stable zirconia raw materials are generally used in the production of zirconia products in the market. Related products are made through granulation, pressing, firing and other processes. Due to the high melting point of zirconia and difficult sintering, the firing temperature needs to be at Above 1700°C, the firing temperature is high and energy consumption is high, and the firing temperature range is narrow, which is easy t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/66C04B35/48C04B35/622
Inventor 应文翰
Owner ZHEJIANG IRON LION HIGH TEMPERATURE MATERIALS CO LTD
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