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A kind of y-psz reinforced refractory material and its preparation process

A technology of Y-PSZ and refractory materials, which is applied in the field of refractory materials, can solve the problems of periclase spinel, which is difficult to sinter, compact and anti-stripping performance, and achieve the effects of improving the degree of direct bonding, improving corrosion resistance, and good mechanical properties

Active Publication Date: 2020-09-04
营口宏远耐火材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problems of the existing periclase spinel refractory materials, which are difficult to sinter and have poor spalling resistance, and provide a kind of refractory material which has excellent refractory performance after strengthening and the thermal expansion coefficients of each component are compatible with each other. It is a refractory material that is easy to sinter, dense and has excellent spalling resistance

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] A kind of preparation technology of Y-PSZ strengthened refractory material, described preparation technology comprises the following steps:

[0035] 1) Preparation of ultrafine powdered Y-PSZ: a) Dissolve 18 parts of yttrium nitrate hexahydrate and 90 parts of zirconium oxychloride octahydrate in water and dilute until the molar concentration of zirconium ions is 0.054mol / L to obtain a mixed salt solution;

[0036] b) Add 0.8 parts of sorbitan monooleate to the mixed salt solution obtained in a), and add ammonia water dropwise to it after uniform stirring, adjust the pH value to 7.8, produce a milky white precipitate, and obtain a precipitated aqueous solution;

[0037] c) Mix the precipitated aqueous solution obtained in b) and petroleum ether at a volume ratio of 1:0.8, transfer the mixed system to a water-oil separator and let it stand until all the precipitate is extracted into petroleum ether, discard the aqueous solution at the lower part of the funnel , keep the...

Embodiment 2

[0043] A kind of preparation technology of Y-PSZ strengthened refractory material, described preparation technology comprises the following steps:

[0044] 1) Preparation of ultrafine powdered Y-PSZ: a) 22 parts of yttrium nitrate hexahydrate and 110 parts of zirconium oxychloride octahydrate were dissolved in water and diluted until the molar concentration of zirconium ions was 0.056 mol / L to obtain a mixed salt solution;

[0045] b) Add 1.2 parts of sorbitan monooleate to the mixed salt solution obtained in a), add ammonia water dropwise to it after uniform stirring, adjust the pH value to 8.5, produce a milky white precipitate, and obtain a precipitated aqueous solution;

[0046] c) Mix the precipitated aqueous solution obtained in b) and petroleum ether at a volume ratio of 1:1.2, transfer the mixed system to a water-oil separator and let it stand until all the precipitates are extracted into petroleum ether, discard the aqueous solution at the lower part of the funnel , ...

Embodiment 3

[0052] A kind of preparation technology of Y-PSZ strengthened refractory material, described preparation technology comprises the following steps:

[0053] 1) Preparation of ultrafine powdered Y-PSZ: a) 18 parts of yttrium nitrate hexahydrate and 105 parts of zirconium oxychloride octahydrate were dissolved in water and diluted until the molar concentration of zirconium ions was 0.055 mol / L to obtain a mixed salt solution;

[0054] b) Add 1.0 parts of sorbitan monooleate to the mixed salt solution obtained in a), and add ammonia water dropwise to it after uniform stirring, adjust the pH value to 8.0, produce milky white precipitate, and obtain a precipitated aqueous solution;

[0055] c) Mix the precipitated aqueous solution obtained in b) and petroleum ether at a volume ratio of 1:1.0, transfer the mixed system to a water-oil separator and let it stand until all the precipitate is extracted into petroleum ether, discard the aqueous solution at the lower part of the funnel , ...

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Abstract

The invention relates to a Y-PSZ strengthened fireproof material and a preparation process thereof. The fireproof material is prepared from the following raw materials in percentage by weight: 28 to 30 percent of high-purity fine magnesia, 27 to 30 percent of high-purity crude magnesia, 17 to 21 percent of fused magnesia, 15 to 20 percent of aluminum magnesium spinel, 1.5 to 4 percent of monatomicsilicon, 1.5 to 3 percent of carbon nano-tube and 0.5 to 1.0 percent of an additive. The product has high mechanical property, heat stability and thermal shock resistance, has high medium-temperatureand high-temperature strength, is safe and non-toxic, and is an environment-friendly material; the use requirement of a binding agent is avoided and the preparation process is environmentally friendly and clean; the Y-PSZ is added, so that the toughening effect is achieved, and the medium-temperature and high-temperature strength, the thermal shock resistance and the slag corrosion resistance ofthe material are obviously improved.

Description

technical field [0001] The invention relates to a refractory material, in particular to a Y-PSZ reinforced refractory material which is easy to sinter and resists spalling and a preparation process thereof. Background technique [0002] Periclase-spinel refractory has excellent thermal shock resistance and high temperature strength, and has wide adaptability to different types of slag. It has been successfully used in the firing zone of cement rotary kiln, regenerator of glass melting cellar, Baotou Steel and RH refining furnace. However, due to the mismatch of thermal expansion coefficients between periclase and spinel, this series of materials has the problems of difficulty in sintering and densification and poor spalling resistance. [0003] On January 6, 2016, the Chinese Patent Office announced a patent for the invention of a periclase magnesia-aluminum spinel brick and its preparation process, the patent publication number is CN105218117A. The technical solution uses ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/043C04B35/622
CPCC04B35/043C04B35/622C04B2235/3244C04B2235/3427C04B2235/422C04B2235/428C04B2235/443C04B2235/9607
Inventor 胡宏平
Owner 营口宏远耐火材料有限公司
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