Apparatus and method for measuring the erosion resistance of electromelted high-zirconia bricks for substrate glass furnaces.

Abstract

The present invention discloses an apparatus and method for measuring the erosion resistance of electrically fused high-zirconia bricks for substrate glass furnaces. The apparatus includes a crucible cover attached to the opening of the crucible, a positioning shaft installed at the center of the crucible cover, and a number of square holes evenly spaced around the periphery of the crucible cover, with fixing components attached to the square holes. The apparatus for measuring the erosion resistance of electrically fused high-zirconia bricks involves machining the electrically fused high-zirconia bricks into samples of predetermined dimensions, measuring their initial dimensions, and then fixing them to a platinum crucible. The platinum crucible is then filled with a substrate glass blend based on the product composition, and the samples are placed in a high-temperature furnace for simulating process temperature conditions and subsequently cooled with the furnace. The changes in the dimensions and depth of the samples before and after erosion can be measured, allowing for accurate calculation of the glass erosion resistance rate of the electrically fused high-zirconia bricks, providing an experimental basis for selecting electrically fused high-zirconia brick materials for production furnaces.

Description

Technical Field

[0001] The present invention relates to the field of performance testing of refractory materials for high-generation substrate glass furnaces, and specifically to an apparatus and method for measuring the erosion resistance of electrofused high zirconia bricks for substrate glass furnaces.

Background Art

[0002] Glass products are widely used in the display field, and the development of the display device industry cannot be considered without the support of the glass industry. Although other materials can replace glass materials in some usage scenarios, the excellent performance of glass still cannot be replaced. From the traditional color television tube industry to the current flat panel display industry, glass has functioned as an important component in display devices, and actually as the frame and carrier of the entire device, as well as an optical component. The upper and lower two substrates of flat panel display devices require precise micro-semiconductor processing processes. In order to achieve the high-efficiency and long-life operation of the next-generation and large-capacity substrate glass furnace, the electrofused high zirconia bricks for the furnace must have strong corrosion resistance to glass liquid, so that the long-life operation of the furnace can be satisfied.

Summary of the Invention

Problems to be Solved by the Invention

[0003] In the manufacturing process of substrate glass, it is necessary to put the glass batch material into the supply port of the melting furnace stably and smoothly through the supply system, perform melting, clarification, and homogenization in the furnace, and supply a homogeneous glass liquid suitable for the next process. The glass liquid melted in the melting furnace is an alkali-free high-aluminum borosilicate glass, and this glass product is mainly used as a substrate glass for flat panel displays.

[0004] Electromelted high-zirconia bricks are the mainstream application material for the pool walls and pool bottoms of gas-electric mixed furnaces for substrate glass. As the input volume and flow rate of high-generation substrate glass increase, the erosive effect on the pool walls and pool bottom intensifies. Therefore, electromelted high-zirconia bricks for furnaces cannot avoid erosion from the high-temperature glass molten metal and various electrochemical environments within the furnace during the glass melting process, leading to a reduction in furnace lifespan. Thus, studying the glass molten metal corrosion resistance of electromelted high-zirconia bricks for furnaces has significant application value in extending furnace lifespan and in material selection and process design for electromelted high-zirconia bricks. [Means for solving the problem]

[0005] This invention discloses an apparatus and method for measuring the erosion resistance of electromelted high-zirconia bricks for substrate glass furnaces, enabling accurate measurement of the erosion rate that glass molten material exerts on electromelted high-zirconia bricks for furnaces during a glass melting process at high temperatures.

[0006] To achieve the above objective, the present invention employs the following technical means.

[0007] The present invention discloses an apparatus for measuring the erosion resistance of electromelted high-zirconia bricks for substrate glass furnaces, comprising a crucible (3), a crucible cover, a positioning shaft (5), a square hole, and a fixing component, wherein the crucible cover is attached to the opening of the crucible (3), the positioning shaft (5) is installed at the center of the crucible cover, a plurality of square holes are provided, the square holes are evenly arranged in the circumferential direction of the crucible cover, and the fixing component is attached to the square hole.

[0008] Furthermore, the length of the square hole is greater than 105 mm, and the width of the square hole is greater than 24 mm.

[0009] Furthermore, the depth of the crucible (3) is greater than 12 mm, and the material of the crucible (3) is PtRh2O.

[0010] Furthermore, the angle between the radial directions of the crucible cover in which each of the aforementioned square holes is located is 90 degrees.

[0011] Furthermore, the present invention discloses a method for measuring the erosion resistance of electromelted high-zirconia bricks for substrate glass furnaces, comprising the steps of: processing the initial dimensions of an electromelted high-zirconia brick sample to be measured based on the above-described apparatus to obtain a processed electromelted high-zirconia brick sample (2); adding a glass compounding material to a crucible (3), attaching a crucible cover to the opening of the crucible (3), placing the processed electromelted high-zirconia brick sample (2) into the glass compounding material through a square hole, and fixing the processed electromelted high-zirconia brick sample (2) using fixing parts; placing the entire apparatus in a high-temperature furnace, maintaining it at a predetermined temperature, performing a measurement, and obtaining the dimensional depth change of the processed electromelted high-zirconia brick sample (2); and calculating the glass erosion resistance rate of the processed electromelted high-zirconia brick sample (2) based on the dimensional depth change.

[0012] Furthermore, the chemical material components of the electromelted high-zirconia brick sample to be measured include ZrO2, SiO2, and impurities, with the mass percentage of ZrO2 being 93% or more, the mass percentage of SiO2 being 4% or more, the mass percentage of the impurities being greater than 0%, and the mass percentage of the impurities being 3% or less, and the sum of the mass percentages of ZrO2, SiO2, and the impurities being 100%.

[0013] Furthermore, the aforementioned glass compound material is composed of glass raw materials and broken glass.

[0014] Furthermore, the mass ratio of the glass raw material to the broken glass is (75%~76%):(24%~25%).

[0015] Furthermore, the predetermined temperature is 1650°C.

[0016] Furthermore, the aforementioned heat retention time is 72 hours. [Effects of the Invention]

[0017] The apparatus and method for measuring the erosion resistance of electromelted high-zirconia bricks for substrate glass furnaces according to the present invention have the following beneficial effects.

[0018] In the electromelted high-zirconia brick erosion resistance measuring device for substrate glass furnaces provided by the present invention, a crucible cover is attached to the opening of the crucible, and a positioning shaft is attached to the center of the crucible cover. Rectangular holes are provided evenly spaced around the circumferential direction of the crucible cover, and fixing components are attached to these holes. In the present invention, this measuring device is rationally designed by utilizing existing components and their dimensional arrangement in the laboratory, and the structure of the device is simple and easy to operate repeatedly.

[0019] The present invention provides a method for measuring the erosion resistance of electromelted high-zirconia bricks for substrate glass furnaces. This method calculates the glass erosion rate of electromelted high-zirconia bricks by measuring the changes in dimensions and depth of electromelted high-zirconia brick samples before and after erosion. The measurement results are scientifically reliable and have significant application value in terms of extending the lifespan of furnaces, selecting electromelted high-zirconia brick materials, and designing processes. [Brief explanation of the drawing]

[0020] [Figure 1] This is a schematic diagram of the electromelted high-zirconia brick erosion resistance measuring device for substrate glass furnaces according to the present invention. [Figure 2] This is a schematic diagram showing the state of electromelted high-zirconia bricks before and after erosion. [Figure 3] This is a plan view of the electromelted high-zirconia brick erosion resistance measuring device for substrate glass furnaces according to the present invention. [Modes for carrying out the invention]

[0021] In this application, some embodiments will be simply described below. Without departing from the gist or scope of the present invention, the described embodiments can be modified in various different ways. Therefore, it should be understood that the drawings and the description are essentially illustrative and not restrictive.

[0022] In the description of the present invention, the orientation or positional relationship indicated by terms such as "center", "vertical direction", "horizontal direction", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "upper end", "lower end", "inner side", "outer side", "clockwise", "counterclockwise", "axial direction", "radial direction", "circumferential direction", etc. is based on the orientation or positional relationship shown in the drawings, and is merely for facilitating the description of the present invention and simplifying the description. These do not imply or suggest that the target device or element must be arranged or operated in a specific orientation or structure, and should not be construed as a limitation of the present invention.

[0023] In the present invention, unless there are specific regulations or limitations, terms such as "attachment", "connection", "coupling", "fixation", etc. should be construed in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integrated one. Also, it may be a mechanical connection, an electrical connection, or a communication connection. It may be a direct connection, or an indirect connection via an intermediate medium, or a communication within two elements or an interaction relationship between two elements. The specific meanings of these terms can be understood by those skilled in the art according to specific situations.

[0024] The present invention will be described in more detail below based on the drawings.

[0025] As shown in FIGS. 1 and 3, the apparatus for measuring the erosion resistance of the electro-fused high zirconia bricks for the substrate glass kiln according to the present invention includes a crucible 3, a crucible cover, a positioning shaft 5, a corner hole, and a fixing part. A crucible cover is attached to the crucible 3, and a positioning shaft 5 is installed at the center of the crucible cover. The positioning shaft 5 serves as a reference for the arrangement of the corner holes.

[0026] Specifically, the corner holes are evenly arranged around the positioning shaft 5 along the circumferential direction of the crucible cover, and the number of the corner holes is four. The angle between the radial directions of each corner hole is 90 degrees, whereby four processed electro-fused high zirconia brick samples 2 can be reasonably arranged around the positioning shaft.

[0027] Specifically, a fixing part is attached to each corner hole and is used to fix the processed electro-fused high zirconia brick sample 2.

[0028] Specifically, the length of each corner hole is 105 mm or more, the width is 24 mm or more, and the depth of the crucible 3 is 12 mm or more. This is used to satisfy the size (105 mm × 24 mm × 12 mm) of the processed electro-fused high zirconia brick sample 2.

[0029] Specifically, as the material of the crucible 3, a platinum crucible of PtRh2O is used to ensure the high-temperature resistance and stability of the experiment.

[0030] The method for measuring the erosion resistance of the electro-fused high zirconia bricks for the substrate glass kiln according to the present invention includes the following steps.

[0031] First, the electro-fused high zirconia brick sample to be measured is processed to obtain a processed sample 2 with a size of 105 mm × 24 mm × 12 mm.

[0032] Next, the glass compound material 4 is placed in the crucible, the crucible cover is attached, and the processed electromelted high-zirconia brick sample 2 is placed in the glass compound material 4 through the square hole and secured with fixing parts. The mixing ratio of the glass compound material 4 is glass raw material:broken glass = (75%~76%):(24%~25%). In this example, the ratio of glass raw material to broken glass is 76%:24% in the glass compound material.

[0033] Finally, the prepared measuring device is placed in a high-temperature furnace and held at 1650°C for 72 hours. After cooling in the furnace, the depth change of the processed electromelted high-zirconia brick sample 2 before and after erosion is measured, and the glass erosion resistance rate of the electromelted high-zirconia brick is calculated.

[0034] Figure 2 is a comparison of the processed electromelted high-zirconia brick sample 2 according to the present invention before and after erosion, showing that a portion of the glass-reinforced material 4 in the lower part has been eroded.

[0035] Table 1 shows the erosion rates of electromelted high-zirconia brick samples. [Table 1]

[0036] By matching the mixing ratio of the glass compound material 4 used in the experiment of the present invention with the experimental temperature of the production line, and by measuring the change in depth of the sample dimensions of the processed electromelted high-zirconia brick before and after erosion, as shown in Table 1, the glass erosion resistance rate of the electromelted high-zirconia brick can be accurately calculated.

[0037] The foregoing are merely preferred embodiments of the present invention and are not intended to limit the technical solutions of the present invention. Those skilled in the art can make simple modifications and substitutions to the technical solutions of the present invention without departing from the spirit and principles of the present invention, and such modifications and substitutions are within the scope of the protection covered by the claims of the present invention. [Explanation of symbols]

[0038] 1. High-temperature furnace 2. Sample of electromelted high-zirconia brick after processing. 3 Crucible 4. Glass-containing raw materials 5 Positioning shaft

Claims

1. A method for measuring the erosion resistance of electromelted high-zirconia bricks for substrate glass furnaces, The measuring device used includes a crucible (3), a crucible cover, a positioning shaft (5), a square hole, and a fixing component. The crucible cover is attached to the opening of the crucible (3), and the positioning shaft (5) is installed in the center of the crucible cover. Multiple rectangular holes are provided, each rectangular in shape and evenly distributed around the crucible cover, and the fixing components are attached to the rectangular holes. The measuring device is installed in the high-temperature furnace (1), The measurement method described above is The process involves processing the initial dimensions of the electromelted high-zirconia brick sample to be measured, and obtaining the processed electromelted high-zirconia brick sample (2). The process involves adding a glass-based material to the crucible (3), attaching the crucible cover to the opening of the crucible (3), placing the processed electromelted high-zirconia brick sample (2) into the glass-based material through the square hole, and fixing the processed electromelted high-zirconia brick sample (2) using fixing parts, The entire apparatus is placed in a high-temperature furnace, maintained at a predetermined temperature, and then measurements are taken to obtain the dimensional depth change of the electromelted high-zirconia brick sample (2) after processing. The steps include calculating the glass erosion resistance rate of the electromelted high-zirconia brick sample (2) after processing based on the dimensional depth change, A method for measuring the erosion resistance of electromelted high-zirconia bricks for substrate glass furnaces, characterized by including the following:

2. A method for measuring the erosion resistance of an electromelted high-zirconia brick for a substrate glass furnace according to claim 1, wherein the length of the square hole is greater than 105 mm and the width of the square hole is greater than 24 mm.

3. The depth of the crucible (3) is greater than 12 mm, and the material of the crucible (3) is PtRh ２ A method for measuring the erosion resistance of electromelted high-zirconia bricks for substrate glass furnaces according to claim 1, wherein the value is O.

4. A method for measuring the erosion resistance of electromelted high-zirconia bricks for substrate glass furnaces according to claim 1, wherein the angle between the radial directions of the crucible cover in which each of the aforementioned square holes is located is 90 degrees.

5. The chemical material components of the electromelted high-zirconia brick sample to be measured are ZrO ２ SiO ２ and impurities, The mass percentage of ZrO2 is 93% or more, and the SiO ２ The mass percentage of is 4% or more, the mass percentage of the impurity is greater than 0%, and the mass percentage of the impurity is 3% or less. The aforementioned Zr ２ , the SiO ２ The method for measuring the erosion resistance of electromelted high-zirconia bricks for substrate glass furnaces according to claim 1, wherein the sum of the mass percentage ratios of the impurities is 100%.

6. The method for measuring the erosion resistance of an electromelted high-zirconia brick for a substrate glass furnace according to claim 1, wherein the glass compound material is composed of glass raw materials and broken glass.

7. The method for measuring the erosion resistance of electromelted high-zirconia bricks for substrate glass furnaces according to claim 6, wherein the mass ratio of the glass raw material to the broken glass is (75% to 76%):(24% to 25%).

8. The method for measuring the erosion resistance of electromelted high-zirconia bricks for substrate glass furnaces according to claim 1, wherein the predetermined temperature of the high-temperature furnace (1) is 1650°C.

9. The method for measuring the erosion resistance of electromelted high-zirconia bricks for substrate glass furnaces according to claim 1, wherein the heat retention time of the high-temperature furnace (1) is 72 hours.

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