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Fired, fire-resistant ceramic product

A product, ceramic technology, applied in the field of fired fireproof ceramic products, can solve problems such as wear and tear

Inactive Publication Date: 2012-11-07
REFRACTORY INTELLECTUAL PRORERTY GMBH & CO KG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Premature wear due to flaking or cracking
This in turn is associated with product loss and costs

Method used

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  • Fired, fire-resistant ceramic product
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  • Fired, fire-resistant ceramic product

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0089] As an example, the tested zirconium products were prepared as follows:

[0090] Pass zirconium silicate powder (2 ) into pellets (3-5 mm in diameter), and then compressed into molded parts under a compression pressure of 150 MPa, and fired at 1,580°C. The physical properties of the product are as follows:

[0091] Bulk density: 3.8g / cm 3

[0092] Open porosity: 17% by volume

[0093] The following data have been determined for other products according to the invention:

[0094] Bulk density: 4.1g / cm 3

[0095] Open porosity: 9% by volume

[0096] or

[0097] Bulk density: 4.3g / cm 3

[0098] Open porosity: 5% by volume

[0099] About the pore size distribution of the tested product: control figure 1 . The graph shows pore diameter in μm on the abscissa and open porosity in relative % on the ordinate, both in histograms (bars) and as a summary curve .

[0100] Structural Composition: Control Figure 2a , 2b, Figure 2b This makes the slit-type pores "S" (i...

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Abstract

The invention relates to a fired, fire-resistant ceramic product whose structure is provided with an open porosity of 2 to 30 percent by volume. More than one half of the open porosity is made up of pores which have a maximum diameter of 15 mum and lie within a pore size interval whose maximum value is less than or equal to ten times the minimum value.

Description

technical field [0001] The present invention relates to fired (fired) fireproof (refractory) ceramic products comprising zirconium silicates of various purities (such as natural zirconium silicate (ZrSiO 4 )) made products. Background technique [0002] Known preparation methods are as follows: [0003] - Zirconium silicate is sintered, subsequently pulverized and pre-fired, the pulverized product is then molded with the addition of a binder and fired again. A disadvantage of this is the multi-step and thus time-consuming and cost-intensive production process. The compactness and corrosion resistance of these products are not sufficient for use in the glass industry (lining of furnaces). [0004] - Die cast parts are made from ZrSiO 4 Suspension cast. Such products do not exhibit satisfactory properties. In particular, mechanical strength such as thermal shock resistance is often unsatisfactory. [0005] Products based on zirconium silicate firing are especially used ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/106C04B38/00C04B35/10C04B35/12C04B35/66
CPCC04B2235/9684C04B35/101C04B2235/3206C04B35/6303C04B2235/3215C04B2235/3232C04B2235/3217C04B35/047C04B2235/76C04B2235/80C04B2235/77C04B35/12C04B2235/96C04B2235/3272C04B38/0074C04B35/106C03B5/43C04B2235/3418C04B35/043C04B35/481C04B2235/72C04B2235/786C04B2235/447C04B2235/3248C04B35/0435C04B2235/5436C04B2235/3225C04B2235/3244Y10T428/249978Y10T428/249967Y10T428/249975Y10T428/24997Y10T428/249921C04B38/0054C04B38/0058C04B35/10C04B38/00
Inventor 博罗·朱里西克伯恩德·巴克伯格克劳斯·桑陶斯基弗朗兹·凯克
Owner REFRACTORY INTELLECTUAL PRORERTY GMBH & CO KG