Zirconium-base sintered product

A sintered product, zircon technology, applied in the direction of manufacturing tools, glass manufacturing equipment, glass furnace equipment, etc., can solve problems such as difficult size specifications, consistency, glass maker loss, etc.

Active Publication Date: 2008-05-07
SAINT GOBAIN CENT DE RES & DEVS & DETUD EUROEN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] For some glass applications, especially when shaping glass sheets, it is necessary to limit creep to the minimum possible, because creep can cause deformation in the refractory block so that it is difficult to conform to the size specification of the glass sheet, and caused great loss to glassmakers

Method used

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Examples

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Embodiment Construction

[0051] In order to illustrate the invention, the following non-limiting examples are given.

[0052] In these examples, the starting materials used were selected from (given percentages are weight percents):

[0053] · Zircon sand, which contains 66.8% ZrO 2 +HfO 2 , 32.7% SiO 2 , 0.2% Al 2 o 3 and 0.1% TiO 2 ;

[0054] • Zirconia, eg CS10 or CC10 sold by Saint-Gobain ZirPro. These products contain at least 98.8% ZrO 2 +HfO 2 and 0.1% to 0.5% SiO 2 and having a median particle size (D50) of about 3.5 μm (micrometer);

[0055] · Yttriated zirconia, which contains 92% ZrO 2 +HfO 2 , 7% of Y 2 o 3 , 0.3% Al 2 o 3 and 0.2% TiO 2 . Its median particle size (D50) is about 11 μm;

[0056] Titanium oxide, which contains 96.6% TiO 2 , 1.7% Fe 2 o 3 , 0.8% SiO 2 and 0.6% Al 2 o 3 ;

[0057] ·Pure yttrium oxide with a purity greater than 99.9%, with a median particle size of about 3 μm to 4 μm;

[0058] Phosphoric acid (85%H 3 PO 4 solution);

[0059] · Crys...

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PUM

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Abstract

The invention relates to a sintered product, which is manufactured from starting materials containing 75% to 99% of zircon and having the following weight-average chemical composition, based on the weight percentage of oxides: 60%≤ZrO2+HfO2≤75%; 27%≤SiO2≤34%; 0.2%≤TiO2≤1.5%; 0.3%<Y2O3≤3.5%; and other oxides:≤1%; total 100%. It also relates to the use of the sintered article in a glass melting furnace.

Description

technical field [0001] The present invention relates to a novel sinter mass produced from zircon, a method for its manufacture and its use in glass melting furnaces. Background technique [0002] Refractory products include cast products and sintered products. [0003] In contrast to sintered articles, fused-cast articles generally include an abundant intercrystalline glass phase that fills the lattice of crystalline grains. Therefore, the problems encountered by sintered products and fused cast products in their respective applications, and the technical solutions for solving the problems are generally different. In addition, due to major differences in the manufacturing methods, a priori, compositions used to make fused cast articles cannot be used to make sintered articles and vice versa. [0004] Sintered articles are obtained by mixing suitable starting materials, then shaping the green mixture, and firing the green form thus formed at a temperature and for a time suf...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/482C04B35/48C03B5/43
CPCC04B2235/3418C04B2235/5436C04B2235/77C04B2235/44C04B2235/3225C04B35/481C04B2235/9669C04B2235/3246C03B5/43C04B2235/3248C04B2235/3244C04B35/486C04B2235/3232C04B35/48C04B35/482
Inventor 米歇尔·高比尔伊夫·鲍森特-鲁查尔斯·麦加尔伊莎贝尔·卡博弟奥利弗·西蒂
Owner SAINT GOBAIN CENT DE RES & DEVS & DETUD EUROEN
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