Low-creep zircon overflowing brick and preparation method thereof

A zircon, low creep technology, applied in the field of refractory materials, can solve the problems of easy cracking of large overflow bricks, not mentioned to reduce the bending creep rate of overflow bricks, etc., and achieve high temperature flexural strength improvement, bending creep The effect of reducing the rate of change and improving the creep rate

Active Publication Date: 2014-01-22
ZIBO GT INDAL CERAMICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0009] The patent (application number 200710013446.8) applied by the inventor and entitled to discloses a method for preparing a large dense zircon overflow brick, which discloses the method of isostatic pressing after vacuuming and slow heating and heating of large zircon The method of overflow bricks solves the problem that large overflow bricks are very easy to crack during the production process, which fully reveals the manufacturing process of overflow bricks, but does not mention the problem of reducing the bending creep rate of overflow bricks

Method used

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  • Low-creep zircon overflowing brick and preparation method thereof
  • Low-creep zircon overflowing brick and preparation method thereof
  • Low-creep zircon overflowing brick and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0049] Preparation method of low creep zircon overflow brick:

[0050] The mass percentage of each component and its components in zircon powder is Al 2 o 3 0.12%, Fe 2 o 3 0.03%, CaO 0.02%, MgO 0.01%, K 2 O is 0.01%, ZrO 2 66.4%, SiO 2 33.1%, the rest is TiO 2 and P2 o 5 .

[0051] The mass percentage of each component and its components in microsilica powder is Al 2 o 3 0.07%, Fe 2 o 3 0.01%, CaO 0.01%, MgO 0.00%, K 2 O is 0.00%, and the rest is SiO 2 .

[0052] The content of each raw material in this embodiment is shown in Table 1.

[0053] The preparation steps of the zirconia short fiber dispersion: the diameter of 1% of the total mass of zircon powder is 6um, the length is less than 3mm, ZrO 2 +Y 2 o 3 Put ≥99% of the zirconia short fibers into water, add sodium dodecylbenzenesulfonate dispersant accounting for 0.06% of the mass of the zirconia short fibers, then add zircon powder with the same weight as the zirconia short fibers, and grind together fo...

Embodiment 2-13

[0060] The preparation methods of zircon overflow bricks in Examples 2-13 are the same as those in Example 1. The mass ratio of raw materials used in Examples 2-8 and the parameters in the preparation process are shown in Table 1; the raw materials used in Examples 9-13 See Table 2 for the ratio and parameters in the preparation process. The detection method is the same as that of Example 1, and the detection data of Examples 2-8 are shown in Table 3; the detection data of Examples 9-13 are shown in Table 4.

[0061] Each component and its component mass percent in the zircon powder that embodiment 9 uses is Al 2 o 3 0.35%, Fe 2 o 3 0.06%, CaO 0.05%, K 2 O is 0.02%, Na 2 O is 0.02%, ZrO 2 66.1%, SiO 2 is 33.0%, and the remaining amount of TiO 2 and P 2 o 5 .

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Abstract

The invention relates to a low-creep zircon overflowing brick and a preparation method thereof. The low-creep zircon overflowing brick comprises, by mass, 100% of zircon powder, wherein zircon oxide short fibers account for, by mass, 0.0-4.0% of the zircon powder, silicon oxide powder accounts for, by mass, 0.1-2.0% of the zircon powder, and composite additives account for, by mass, 0.1-0.8% of the zircon powder. The composite additives can be La2O3, or CeO2, or combination of La2O3 and Y2O3, or combination of CeO2 and Y2O3, or combination of La2O3, CeO2 and Y2O3. According to the low-creep zircon overflowing brick and the preparation method thereof, strength of green bodies is improved, firing shrinkage of the green bodies is reduced, manufacturing yield of products is improved, bonding strength of crystal boundaries of zircon is enhanced, the high-temperature bend-creep rate of products is effectively lowered, and the service life of super-large-size overflowing bricks is prolonged.

Description

technical field [0001] The invention relates to a low-creep zircon overflow brick and a preparation method thereof, belonging to the technical field of refractory materials. technical background [0002] With the development of the overflow down-draw production technology for manufacturing liquid crystal glass, foreign liquid crystal glass has generally formed a market orientation with the 8.5th generation liquid crystal substrate as the leading product. The length of the overflow brick used in the down-draw method to produce 8.5 generation liquid crystal glass is more than 3100mm. Tensile forces on flow bricks, despite the low creep rate of conventional zircon materials, and the resistance of the bending deformation by the glassmaker applying some pressure from the support points on both sides of the brick, bending occurs under the above conditions creep. The specific performance is that the height of the middle part of the overflow brick is lower than the height of the s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/66C04B35/48C04B35/622
Inventor 张启山张瑛李志军刘杰逄丽丽李玉强蒋绪贵
Owner ZIBO GT INDAL CERAMICS
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