Porous ceramic, binder thereof, preparation methods of two and application of porous ceramic

A technology for porous ceramics and binders, applied in the field of ceramic materials, can solve problems such as filter material damage, and achieve the effects of small pore size, good chemical stability, high-temperature mechanical properties, and a simple preparation method
CN113979772APending Publication Date: 2022-01-28GUANGDONG INST OF NEW MATERIALS
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
GUANGDONG INST OF NEW MATERIALS
Publication Date
2022-01-28

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Abstract

The invention relates to the technical field of ceramic materials, and discloses porous ceramic, a binder thereof, preparation methods of the two and application of the porous ceramic. The preparation method of the binder of the porous ceramic comprises the following steps: calcining reaction raw materials at 1200-1350 DEG C to obtain the binder, wherein the binder comprises the following components in percentage by mass: 5-50% of Al2O3, 5-33% of SiO2, 2-50% of alkaline earth metal oxide and 1-43% of B2O3, and the sum of the content of Al2O3, SiO2, alkaline earth metal oxide and B2O3 is at least 90.5%. The binder of the porous ceramic is prepared by adopting the above preparation method. The preparation method of the porous ceramic comprises the following steps: uniformly mixing 5-28 parts of the binder and 100 parts of ceramic particles, pressing and sintering. The porous ceramic is prepared by the preparation method. The porous ceramic has excellent low-temperature mechanical properties and can be applied to filtration and purification of aluminum alloy melt.
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Description

technical field

[0001] The invention relates to the technical field of ceramic materials, in particular to porous ceramics and their binders as well as their preparation methods and applications. Background technique

[0002] Aluminum ingots used in high-quality aluminum products (such as packaging materials, sheets and plates for aerospace and ships, printed products, etc.) require high purity of aluminum liquid and no inclusions. These inclusions seriously reduce the key properties of ingots and their products, such as calenderability, strong plasticity, fatigue performance, welding performance, polishing performance, corrosion resistance, and stress corrosion cracking resistance. Effectively reducing oxide inclusions in the melt and improving the quality of castings is an inevitable trend for the high-quality development of the aluminum alloy industry.

[0003] So far, it is a common practice to use porous ceramic filter materials to remove inclusions from aluminum alloy...

Claims

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