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Ceramic product based on lithium aluminium silicate

A technology of ceramic products and lithium aluminum silicate, applied in the field of ceramic products

Inactive Publication Date: 2004-12-15
DAKOT CC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] None of the articles hitherto used for the above purposes have ideal properties in this regard, including aluminum titanate; fused silica; cast iron and fiber ceramic plates

Method used

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Embodiment Construction

[0025] A suitable amount of finely divided petalite is formed by any of the common methods such as slip casting; injection molding extrusion; Firing at a temperature in between, thereby preparing a semi-porous LAS ceramic product containing 100% LAS (mass percentage) according to the present invention.

[0026] Finely divided petalite preferably comprises a mixture of two parts:

[0027] The first part has an average particle size on the order of 1 micron, and its content is 50% to 100% (mass percentage content); and

[0028] The average particle size of the second part is less than 75 microns, and its content is 0-50% (mass percentage content).

[0029] According to the present invention, BaSO is added to the product by any one of the following two methods: 4 As a non-wetting agent, thus improving the non-wetability of the LAS ceramic articles:

[0030] 1. BaS injection method

[0031] (i) by initially adding a mass of BaSO 4 Mix with half the mass of carbon to prepare a...

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Abstract

A ceramic product, particularly one for handling molten aluminium, which contains at least 70 % lithium aluminium silicate on a mass per mass basis is disclosed as well as a method of improving the non-wettability of the product.

Description

technical field [0001] The present invention relates to a ceramic product, in particular to a ceramic product for processing molten aluminum. [0002] In this specification, the term "ceramic article" refers to an article formed by firing a ceramic raw material to an appropriate temperature. Background technique [0003] Molten aluminum, due to its relatively low melting point of about ±700°C, is difficult to handle, and therefore the equipment employed typically includes high thermal shock resistance, high wetting resistance, low thermal conductivity / capacity, and high strength products. [0004] None of the articles hitherto used for this purpose have ideal properties in this regard, including aluminum titanate; fused silica; cast iron and fiber ceramic plates. Contents of the invention [0005] The object of the present invention is to provide a ceramic article which the Applicant considers to have advantages over known devices. [0006] According to the present inve...

Claims

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Application Information

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IPC IPC(8): C04B38/00B28B1/00C04B35/19C04B41/50C04B41/85C22B21/00
CPCC04B35/19C04B41/009C04B2111/00879C04B41/5014C22B21/0084C04B41/85C04B41/4535C04B41/455
Inventor 德克·艾伯塔斯·科茨
Owner DAKOT CC
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