Device and method for measuring the erosion resistance of electric melting high-zirconium brick of substrate glass kiln

Abstract

A device and method for measuring the erosion resistance of an electric melting high-zirconium brick of a substrate glass kiln, relating to the field of property testing of refractory materials for advanced-generation substrate glass kilns. A matched crucible cover is mounted at an opening of a crucible (3) in the device, a positioning shaft (5) is mounted on the center of the crucible cover, the crucible cover is circumferentially and uniformly provided with a plurality of square holes, and fixing parts are mounted on the square holes. The method comprises: by means of designing the device for measuring the erosion resistance of an electric melting high-zirconium brick, processing an electric melting high-zirconium brick into a sample (2) having a required size; measuring the initial size and then fixing same in the crucible (3); preparing a substrate glass batch (4) according to a product ratio in the crucible (3); and placing same in a high-temperature furnace, performing heat preservation at a simulated process temperature, then performing furnace cooling, and measuring the depth change of the sample size before and after the sample is eroded, so as to accurately calculate the glass erosion rate of the electric melting high-zirconium brick. Therefore, the present application can provide an experimental basis for material selection of electric melting high-zirconium bricks for production line kilns.

Description

A device and method for measuring the corrosion resistance of high-zirconium bricks in glass furnaces Technical Field

[0001] The present invention relates to the field of refractory material performance testing for high-generation substrate glass furnaces, and in particular to a device and method for measuring the corrosion resistance of fused high-zirconium bricks for substrate glass furnaces. Background Art

[0002] Glass products have always been widely used in the display field. Without the support of the glass industry, the development of the display device industry is unimaginable. Although other materials can replace glass materials in some occasions, they still cannot replace the excellent performance of glass. From the traditional color picture tube industry to the current flat panel display industry, glass has always played a key role in display devices as a key component. In fact, it is the frame and carrier of the entire device, and also an optical element. As the upper and lower substrates of flat panel display devices, they require fine microscopic semiconductor process processing. To meet the high-efficiency and long-life operation of high-generation, large-feed substrate glass kilns, the kiln's electric-fused high-zirconium bricks must have strong resistance to glass liquid erosion to meet the long-life operation of the kiln.

[0003] During the manufacturing process, glass substrates are first fed into the furnace via a feeding system, ensuring a stable and smooth flow of glass batch material. Within the furnace, the glass is melted, clarified, and homogenized, providing a qualified, homogeneous molten glass for the next steps. The molten glass in the furnace is alkali-free, high-aluminum borosilicate glass, primarily used as substrate glass for flat panel displays.

[0004] As the mainstream application material for the pool wall and bottom of the gas-electric hybrid kiln for substrate glass, as the output of high-generation substrate glass increases, the flow rate increases, which intensifies the scouring effect on the pool wall and bottom. Therefore, the kiln's fused high zirconium bricks are inevitably corroded by high-temperature molten glass and various electrochemical atmospheres in the kiln during the glass melting process, resulting in a reduction in the life of the kiln. Therefore, the study of the resistance of fused high zirconium bricks to glass liquid corrosion has very important application value for extending the life of the kiln and the selection of materials and process formulation for fused high zirconium bricks.

[0005] Summary of the Invention

[0006] The present invention provides a device and method for measuring the corrosion resistance of high-zirconium bricks in a glass furnace substrate, so as to solve the problem of whether it is possible to accurately measure the corrosion rate of glass liquid on high-zirconium bricks in a glass furnace during high-temperature glass melting.

[0007] In order to achieve the above object, the present invention adopts the following technical solutions:

[0008] A device for measuring the corrosion resistance of fused high zirconium bricks in a glass furnace for substrates, comprising: a crucible, a crucible cover, a positioning shaft, a square hole and a fixing piece;

[0009] A crucible cover is matched with the opening of the crucible, a positioning shaft is installed in the center of the crucible cover, a plurality of square holes are provided, the square holes are evenly arranged on the circumference of the crucible cover, and a fixing piece is installed on the square holes.

[0010] Furthermore, the length of the square hole is greater than 105 mm, and the width of the square hole is greater than 24 mm.

[0011] Furthermore, the depth of the crucible is greater than 12 mm, and the material of the crucible is PtRh20.

[0012] Furthermore, the angle between the radial directions of the crucible cover where each square hole is located is 90 degrees.

[0013] A method for measuring the corrosion resistance of fused high zirconium bricks in a glass furnace substrate, based on the device, comprises the following steps:

[0014] Processing the initial size of the fused high zirconium brick sample to be tested to obtain a processed fused high zirconium brick sample;

[0015] After adding the glass batch into the crucible, install the crucible cover on the opening of the crucible, then insert the processed fused high zirconium brick sample into the glass batch through the square hole, and fix the processed fused high zirconium brick sample with a fixing piece;

[0016] The device is placed in a high-temperature furnace as a whole and kept at a preset temperature, and then measured to obtain the dimensional depth change of the processed fused high zirconium brick sample;

[0017] According to the dimensional depth change, the glass erosion resistance rate of the processed fused high zirconium brick sample is calculated.

[0018] Furthermore, the chemical material components of the fused high zirconium brick sample to be tested include: ZrO2, SiO2 and impurities, the mass percentage of ZrO2 is not less than 93%, the mass percentage of SiO2 is not less than 4%, the mass percentage of impurities is greater than 0%, and the mass percentage of impurities is not greater than 3%, and the sum of the mass percentages of ZrO2, SiO2 and impurities is 100%.

[0019] Furthermore, the glass batch material consists of glass raw materials and cullet.

[0020] Furthermore, the mass fraction ratio of the glass raw material to the cullet is (75% to 76%): (24% to 25%).

[0021] Furthermore, the preset temperature is 1650°C.

[0022] Furthermore, the insulation time is 72 hours.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] The present invention provides a device for measuring the corrosion resistance of electric-fused high-zirconium bricks in a glass kiln for substrates. A crucible cover is installed at the opening of the crucible, a positioning shaft is installed at the center of the crucible cover, square holes are evenly arranged in the circumference of the crucible cover, and fixing parts are installed on the square holes. The present invention utilizes existing laboratory components and their size layout to rationally design the measuring device. The measuring device has a simple structure and is easy to repeat.

[0025] The present invention provides a method for measuring the corrosion resistance of fused high zirconium bricks for glass furnaces on substrates. By measuring the change in sample size and depth of the fused high zirconium bricks before and after corrosion, the glass corrosion resistance rate of the fused high zirconium bricks is calculated. The measurement results are scientific and reliable, and have very important application value in extending the life of the furnace, selecting materials for fused high zirconium bricks, and formulating processes. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] FIG1 is a schematic diagram of a device for measuring the corrosion resistance of fused high-zirconium bricks in a glass furnace of a substrate according to the present invention.

[0027] Figure 2 is a schematic diagram of fused high zirconium bricks before and after erosion.

[0028] FIG3 is a top view of the device for measuring the corrosion resistance of electric-fused high-zirconium bricks in a glass furnace of a substrate according to the present invention.

[0029] Among them, 1. High-temperature furnace; 2. Processed fused high-zirconium brick samples; 3. Crucible; 4. Glass batch; 5. Positioning shaft. DETAILED DESCRIPTION

[0030] Hereinafter, only certain exemplary embodiments are briefly described, and the described embodiments may be modified in various different ways without departing from the spirit or scope of the present invention. Therefore, the drawings and description are to be regarded as illustrative in nature and not restrictive.

[0031] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed or operate in a specific orientation, and therefore should not be understood as limiting the present invention.

[0032] In the present invention, unless otherwise expressly specified or limited, terms such as "install," "connect," "connected," and "fixed" should be understood in a broad sense. For example, the terms "install," "connect," "connect," and "fixed" may refer to fixed connections, detachable connections, or integration; mechanical connections, electrical connections, or communication; direct connections or indirect connections through an intermediate medium; and internal connections between two components or interactions between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0033] The embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0034] As shown in Figures 1 and 3, the present invention provides a device for measuring the corrosion resistance of electric-fused high-zirconium bricks in a substrate glass furnace, comprising a crucible 3, a crucible cover, a positioning shaft 5, a square hole and a fixing part; wherein, the crucible 3 is equipped with a crucible cover, and the positioning shaft 5 is installed at the center of the crucible cover, and the positioning shaft 5 provides a basis for the setting of the square hole.

[0035] Specifically, the square holes are evenly arranged around the positioning axis 5 along the circumference of the crucible cover. There are 4 square holes, and the angle between the radial directions of each square hole is 90 degrees, which is used to reasonably arrange 4 processed electric-fused high-zirconium brick samples 2 around the positioning axis.

[0036] Specifically, each square hole is equipped with a fixing piece to fix the processed fused high zirconium brick sample 2.

[0037] Specifically, the length of each square hole is greater than 105 mm, the width is greater than 24 mm, and the depth of the crucible 3 is greater than 12 mm, so as to meet the size of the processed fused high zirconium brick sample 2 of 105 mm×24 mm×12 mm.

[0038] Specifically, the crucible 3 is a platinum crucible made of PtRh20, which can ensure the high-temperature strength and stability of the experimental melting vessel.

[0039] The present invention provides a method for measuring the corrosion resistance of fused high zirconium bricks in a glass furnace, comprising:

[0040] First, the fused high zirconium brick sample to be tested is processed to obtain a processed fused high zirconium brick sample 2 with a size of 105 mm × 24 mm × 12 mm;

[0041] Add glass batch material 4 to the crucible and install the crucible lid. Insert the processed fused high zirconium brick sample 2 into the glass batch material 4 through the square hole and secure it with a fixing piece. The glass batch material 4 has a ratio of glass raw material: cullet = (75% to 76%): (24% to 25%). This embodiment uses a glass batch material with a ratio of glass raw material: cullet of 76%:24%.

[0042] Finally, the measuring device prepared above was placed in a high-temperature furnace, kept at 1650℃ for 72 hours and then cooled with the furnace. The change in sample size depth of the processed fused high zirconium brick sample 2 before and after erosion was measured to calculate the glass erosion resistance rate of the fused high zirconium brick.

[0043] As shown in FIG2 , it is a comparison diagram of the processed fused high zirconium brick sample 2 of the present invention before and after erosion, and the lower portion immersed in the glass batch material 4 is eroded.

[0044] Table 1 Erosion rate of fused high zirconium brick samples

[0045] The ratio of the glass batch material 4 in the experiment of the present invention is consistent with the experimental temperature and the production line. As shown in Table 1, by measuring the change in sample size depth of the fused high zirconium bricks after processing before and after erosion, the glass erosion resistance rate of the fused high zirconium bricks can be accurately calculated.

[0046] It is known from common technical knowledge that the present invention can be implemented by other embodiments that do not deviate from its spirit or essential features. Therefore, the embodiments disclosed above are merely illustrative in all respects and are not exclusive. All modifications within the scope of the present invention or equivalent to the scope of the present invention are intended to be encompassed by the present invention.

Claims

1. A device for measuring the corrosion resistance of high zirconium bricks in a glass furnace, characterized in that: include: Crucible (3), crucible cover, positioning shaft (5), square hole and fixing piece; A crucible cover is mounted on the opening of the crucible (3), a positioning shaft (5) is mounted at the center of the crucible cover, a plurality of square holes are arranged evenly around the crucible cover, and a fixing piece is mounted on the square holes.

2. A device for measuring the corrosion resistance of high zirconium bricks in a glass furnace according to claim 1, characterized in that: 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 device for measuring the corrosion resistance of high zirconium bricks in a glass furnace according to claim 1 is characterized in that: The depth of the crucible (3) is greater than 12 mm, and the material of the crucible (3) is PtRh20.

4. The device for measuring the corrosion resistance of high zirconium bricks in a glass furnace according to claim 1 is characterized in that: The angle between the radial directions of the crucible cover where each square hole is located is 90 degrees.

5. A method for measuring the corrosion resistance of high-zirconium bricks in a glass furnace substrate, based on the device according to any one of claims 1 to 4, characterized in that: The following steps are involved: Processing the initial size of the fused high zirconium brick sample to be tested to obtain a processed fused high zirconium brick sample (2); After adding glass batch into the crucible (3), the crucible cover is installed at the opening of the crucible (3), and then the processed fused high zirconium brick sample (2) is inserted into the glass batch through the square hole, and the processed fused high zirconium brick sample (2) is fixed with a fixing piece; The device is placed as a whole in a high-temperature furnace and kept warm at a preset temperature, and then measured to obtain the dimensional depth change of the processed fused high-zirconium brick sample (2); According to the dimensional depth change, the glass erosion resistance rate of the processed fused high zirconium brick sample (2) is calculated.

6. A method for measuring the corrosion resistance of high zirconium bricks in a glass furnace according to claim 5, characterized in that: The chemical material components of the fused high zirconium brick sample to be tested include: ZrO2, SiO2 and impurities, the mass percentage of ZrO2 is not less than 93%, the mass percentage of SiO2 is not less than 4%, the mass percentage of impurities is greater than 0%, and the mass percentage of impurities is not greater than 3%, and the sum of the mass percentages of ZrO2, SiO2 and impurities is 100%.

7. The method for measuring the corrosion resistance of high zirconium bricks in a glass furnace according to claim 5, characterized in that: The glass batch material consists of glass raw materials and cullet.

8. A method for measuring the corrosion resistance of high zirconium bricks in a glass furnace according to claim 7, characterized in that: The mass fraction ratio of the glass raw material to the cullet is (75% to 76%): (24% to 25%).

9. A method for measuring the corrosion resistance of high zirconium bricks in a glass furnace according to claim 5, characterized in that: The preset temperature is 1650°C.

10. The method for measuring the corrosion resistance of high zirconium bricks in a glass furnace according to claim 5, characterized in that: The insulation time is 72h.

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