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Calcium zirconate-calcium hexaaluminate composite porous ceramic and preparation method thereof

A calcium hexaaluminate, porous ceramic technology, applied in ceramic products, applications, other household appliances, etc., can solve the problems of fragile, poor strength, poor corrosion resistance, etc., achieve high open porosity, good chemical stability, Strong anti-erosion effect

Active Publication Date: 2021-10-29
朱建良
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, there are many types of ordinary porous ceramics produced, and there are generally technical defects such as poor strength, poor chemical stability, poor corrosion resistance, high production costs, short service life, and narrow range.
Among them, there are ordinary calcium zirconate porous ceramics and calcium hexaaluminate porous ceramics. Although calcium zirconate porous ceramics have high strength, the porosity is not high; calcium hexaaluminate porous ceramics have large porosity, but low strength. Fragile

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0014] Example 1: Calcium zirconate and calcium hexaaluminate prepared in the first and second steps, by weight components: calcium zirconate 2-25 and calcium hexaaluminate 50-90 and pure calcium aluminate cement 8- 30. Rapeseed oil 1-3, water 10-15, cellulose 1-3, mixed in a kneader, kneaded into plastic raw materials, extruded, dried, and the green body was fired at 1350°C-1550°C to form a compound porous ceramics.

example 2

[0015] Example 2: The calcium zirconate and calcium hexaaluminate obtained in the first and second steps are composed by weight: calcium zirconate 2-25 and calcium hexaaluminate 50-90 and pure calcium aluminate cement 8- 30. Polyethylene 2-5, water 25-45, make mud, spray granulation, dry pressing molding, and the green body is fired at 1350°C-1550°C to form composite porous ceramics.

[0016] The composite porous ceramic of the present invention subverts the traditional method, and the product has high strength, stable chemical properties, good thermal shock resistance, strong resistance to chemical erosion, low volume density, less impurities, and wide application industries. It is a new type of special new material.

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PUM

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Abstract

A calcium zirconate-calcium hexaaluminate composite porous ceramic, which is prepared from calcium zirconate, calcium hexaaluminate, zirconia, alumina, pure calcium aluminate cement, rapeseed oil, water, cellulose and polyethylene. It is characterized in that by weight components: calcium hexaaluminate 60-90, calcium zirconate 5-20, pure calcium aluminate cement 5-20, zirconia 50-75, alumina 1-3, polyethylene 2- 5. Water 10-45, rapeseed oil 1-3, cellulose 1-3; step-by-step production: the first step is the production of calcium zirconate; the second step is the production of calcium hexaaluminate; the third step will be the production of zirconium Calcium zirconate and calcium hexaaluminate are then made into calcium zirconate and calcium hexaaluminate composite porous ceramics; the invention has the advantages of not only having all the advantages of ordinary porous ceramics, but also having special properties beyond ordinary materials; light weight, open pores It has high efficiency, good strength, strong adsorption, especially good chemical stability and strong corrosion resistance; it is unreachable by general materials; it is suitable as a catalyst carrier for chemistry, synthesis and catalysis in steel, petrochemical and other industries.

Description

technical field [0001] The invention belongs to the technical field of composite porous ceramics, in particular to calcium zirconate and calcium hexaaluminate composite porous ceramics and a preparation method thereof. Background technique [0002] Porous ceramic is a new type of ceramic material widely used. Due to its uniformly distributed micropore or pore structure and three-dimensional network structure, it has high porosity, low bulk density, and selective permeability to liquid and gas media. , and high temperature and corrosion resistance and good chemical stability. It is widely used in gas and liquid filtration, purification, separation, chemical catalyst carrier, sound absorption and shock absorption, etc. [0003] At present, there are many types of ordinary porous ceramics produced, and there are generally technical defects such as poor strength, poor chemical stability, poor corrosion resistance, high production costs, short service life, and narrow range. Am...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/44C04B35/48C04B38/00
CPCC04B35/44C04B35/48C04B38/00C04B2235/3217C04B2235/3244C04B2235/442
Inventor 朱建良李志银
Owner 朱建良