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Zirconia fireproof material and preparation method thereof

A refractory and zirconia technology, applied in the field of zirconia refractory preparation, can solve the problems of high sintering temperature, product cracking, high energy consumption, etc., and achieve the effect of increasing enterprise income, improving fracture toughness and strength, and reducing cost

Inactive Publication Date: 2019-04-16
盐城紫环工业机械有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] In the prior art, semi-stable or fully stable zirconia raw materials are generally used for zirconia products, and related products are made through granulation, pressing, firing and other processes. Since zirconia has a high melting point and is difficult to sinter, 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 to cause cracking and deformation of the product. The requirements for firing are extremely high, and there are a large number of coarse pores in the dense part of the product made of this craft. It leads to poor thermal shock stability, and phenomena such as bursting, cracking, and precipitation are prone to occur during use, and the performance of the material is difficult to stabilize and guarantee, making articles produced from zirconia refractory materials unable to adapt to various use occasions; therefore, the present invention Propose a kind of zirconia refractory material and its preparation method

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  • Zirconia fireproof material and preparation method thereof

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Effect test

Embodiment 1

[0022] The invention provides a technical solution: a zirconia refractory material, the formula of the improved zirconia refractory material includes the following components: 50% fused monoclinic zirconia, 6% dead-burned magnesia fine powder, metallic aluminum powder 8%, 2% yttrium oxide, 1% barium oxide, 2% phenolic-nitrile type thermoplastic phenolic resin, and the rest is hexamethylenetetramine.

[0023] Among them, the particle size of the dead-burned magnesia fine powder is 210 mesh, the particle size of the metal aluminum powder is 360 mesh, and the ultrasonic vibration power is 70kW.

[0024] A method for preparing the above-mentioned improved zirconia refractory material, the preparation process comprises the following steps:

[0025] S1: Quantitative weighing, all raw materials are weighed according to the above components;

[0026] S2: Prepare the pre-fired material. First, mix the fused monoclinic zirconia and dead-burned magnesia fine powder evenly, then fire at ...

Embodiment 2

[0032] The invention provides a technical solution: a zirconia refractory material, the formula of the improved zirconia refractory material includes the following components: 55% fused monoclinic zirconia, 7% dead-burned magnesia fine powder, metallic aluminum powder 12%, 6% yttrium oxide, 3% barium oxide, 5% phenolic-nitrile type thermoplastic phenolic resin, and the rest is hexamethylenetetramine.

[0033] Among them, the particle size of dead-burned magnesia fine powder is 220 mesh, the particle size of metal aluminum powder is 370 mesh, and the ultrasonic vibration power is 76kW.

[0034] A method for preparing the above-mentioned improved zirconia refractory material, the preparation process comprises the following steps:

[0035] S1: Quantitative weighing, all raw materials are weighed according to the above components;

[0036] S2: Prepare the pre-fired material, first mix the fused monoclinic zirconia and dead-burned magnesia fine powder evenly, then fire at 1350°C, ...

Embodiment 3

[0042] The invention provides a technical solution: a zirconia refractory material, the formula of the improved zirconia refractory material includes the following components: fused monoclinic zirconia 52%, dead-burned magnesia fine powder 9%, metal aluminum powder 10%, yttrium oxide 3%, barium oxide 5%, phenolic-nitrile type thermoplastic phenolic resin 3%, and the rest is hexamethylenetetramine.

[0043] Among them, the particle size of dead-burned magnesia fine powder is 225 mesh, the particle size of metal aluminum powder is 378 mesh, and the ultrasonic vibration power is 78kW.

[0044] A method for preparing the above-mentioned improved zirconia refractory material, the preparation process comprises the following steps:

[0045] S1: Quantitative weighing, all raw materials are weighed according to the above components;

[0046] S2: Prepare the pre-fired material, first mix the fused monoclinic zirconia and dead-burned magnesia fine powder evenly, then fire at 1400°C, kee...

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Abstract

The invention discloses a zirconia fireproof material. The improved zirconia fireproof material is prepared from 50%-55% of electrically fused monoclinic zirconia, 6%-9% of dead burnt magnesite fine powder, 8%-12% of metallic aluminium powder, 2%-6% of yttrium oxide, 1%-5% of barium oxide, 2%-6% of phenolic-nitrile thermoplastic phenolic resin, and the balance hexamethylenetetramine. The inventionfurther discloses a preparation technology of the zirconia fireproof material. The preparation technology includes the following steps of S1, quantitatively weighing the raw materials, S2, preparinga pre-fired material, S3, preparing mixed powder, S4, conducting solidification and bonding, S5, conducting shaping, and S6, conducting calcining. All the raw materials in the formula meet national specifications, the prepared zirconia fireproof material is greatly improved, so that the cracking resistance and strength of the zirconia fireproof material are improved, and articles made of the zirconia fireproof material are suitable for more sites; the cost for preparing the zirconia fireproof material is reduced, enterprise income is increased, and therefore the zirconia fireproof material issuitable for popularization.

Description

technical field [0001] The invention relates to the technical field of preparation of zirconia refractory materials, in particular to a zirconia refractory material and a preparation method 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] In the prior art, semi-stable or fully stable zirconia raw materials are generally used for zirconia products, and related products are made through granulation, pressing, firing and other processes. Since zirconia has a high melting point and is difficult to sinter, 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 i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/48C04B35/622C04B35/66
CPCC04B35/48C04B35/622C04B35/66C04B2235/3206C04B2235/3215C04B2235/3225C04B2235/402C04B2235/656C04B2235/6567
Inventor 冯文君
Owner 盐城紫环工业机械有限公司