High-zirconium bricks, their manufacturing process and use

Abstract

This document provides high-zirconium bricks, their manufacturing processes, and their uses. [Solution] The composition of the high-zirconium brick is, by weight percent, 40-99% zirconium dioxide, 0.1-60% aluminum oxide, and a total of 0.1-40% yttrium oxide, iron oxide, titanium oxide, magnesium oxide, calcium oxide, and silicon oxide. The present invention employs a curved temperature control method to control heating and annealing cooling, resulting in a product in which each element is uniform throughout, without segregation, with a uniform and consistent density throughout the product, and free from defects such as needle-like pores, air bubbles, and surface holes. The high-zirconium brick products manufactured by this process have a short delivery cycle and can be customized for production.

Description

Technical Field

[0001] The present invention relates to materials for glass furnaces, and specifically to high zirconium bricks, their manufacturing processes and uses.

Background Art

[0002] Materials for glass furnaces are roughly classified into sintered materials and fusion-cast materials. Sintered materials have a relatively simple manufacturing process, but generally have a high porosity (about 10 - 30%). Therefore, when used in glass furnaces, they are likely to cause problems such as bubbles and detachment of aggregates, and defects such as bubbles and sand grains occur in glass products. Thus, they cannot be applied to important parts in contact with the high-temperature liquid of the glass furnace. In particular, high zirconia sintered materials added with stabilizers such as Y2O3, MgO, and CaO to avoid the phase transition between monoclinic and tetragonal phases of zirconia between 900°C - 1200°C have a large thermal expansion coefficient and are likely to cause thermal stress cracking during the heating process. At the same time, the stabilizer dissolves in the glass liquid in the high-temperature environment of the glass furnace, and the stabilized zirconia transfers to an unstable state, the phase transition continues, the material structure becomes fragile, and similarly causes defects such as sand grains in the glass. Therefore, such materials cannot be applied to glass furnaces either.

[0003] In contrast, products obtained by melting raw materials in an electric furnace, fully homogenizing them, then casting and shaping, and cooling and solidifying have a dense structure, well-developed crystals, and are more suitable for the use environment of glass furnaces. Melting and casting materials with a high zirconia content have excellent erosion resistance, so they are preferred materials in glass melting furnaces. Such materials are mainly divided into two types: Al2O3-ZrO2-SiO2-based fusion-cast refractory materials with a zirconia content of 33% - 41% and high zirconia content-based fusion-cast refractory materials with a high zirconia content of 80% - 95%. The latter has more excellent erosion resistance and low pollution to the glass frit liquid, and thus has been widely used in high-quality glass furnaces in recent years.

[0004] However, conventional high-zirconia refractory materials still have drawbacks. For example, they have a lower glass phase content than electrofused zirconium corundum (AZS), and differences in cooling rates during the casting process can cause some materials to exhibit a highly porous, ring-like structure, potentially leading to problems such as foaming. Furthermore, high-zirconia molten-cast refractory materials have low yields, long lead times, and are expensive, which limits their large-scale application. In addition, the poor thermal shock performance of molten-cast high-zirconia products, along with factors such as the control capabilities of industrial products, leads to significant differences in application results. Therefore, research and development and application of refractory materials for glass furnaces require continuous exploration and innovation to meet the glass industry's demand for high-quality, high-performance refractory materials. [Overview of the project]

[0005] The present invention aims to provide high-zirconium bricks, their manufacturing processes, and applications in order to solve problems inherent in conventional high-zirconia molten-cast refractory materials, such as high manufacturing costs and poor thermal shock performance.

[0006] To achieve the above objective, the present invention provides the following technical solutions.

[0007] In a first embodiment, the present invention provides a high-zirconium brick. The high-zirconium brick is By weight percent, it contains 40-99% zirconium dioxide, 0.1-60% aluminum oxide, and a total of 0.1-40% yttrium oxide, iron oxide, titanium oxide, magnesium oxide, calcium oxide, silicon oxide, or By weight percent, it contains 40-99% zirconium dioxide, 0.1-60% magnesium oxide, and a total of 0.1-40% yttrium oxide, iron oxide, titanium oxide, calcium oxide, silicon oxide, or By weight percentage, it contains 40-99% zirconium dioxide, 0.1-60% calcium oxide, and a total of 0.1-40% magnesium oxide, yttrium oxide, iron oxide, titanium oxide, and silicon oxide, or By weight percent, it contains 40-99% zirconium dioxide, 0.1-60% chromium oxide, and a total of 0.1-40% calcium oxide, magnesium oxide, yttrium oxide, iron oxide, titanium oxide, silicon oxide, or It contains, by weight percent, 40-99% zirconium dioxide, 0.1-60% beryllium oxide, and a total of 0.1-40% calcium oxide, magnesium oxide, yttrium oxide, iron oxide, titanium oxide, and silicon oxide.

[0008] In a first embodiment, the present invention provides a manufacturing process for high-zirconium bricks. The aforementioned manufacturing process is Step 1 involves weighing each component, mixing them uniformly, reacting them at 1800°C-3000°C for at least 45 minutes to form a molten liquid or solid phase structure, and then cooling to obtain a solid solution raw material. Step 2 involves grinding the solid solution raw material obtained in Step 1 into a powder with a D50 value of 0.2-100 μm. Step 3 involves adding 0.1-5% organic or inorganic adhesive to the powder obtained in Step 2 and mixing it uniformly. Step 4 involves placing the powder obtained in Step 3 into a mold and press-molding it under a pressure of 500 tons or more for at least 15 seconds to obtain the initial dough. Step 5 involves heating the initial dough obtained in Step 4 from room temperature to 1600-1950°C using a temperature-controlled heating device for at least 5 hours, maintaining it above 1600°C for at least 1 hour, and then cooling it down to room temperature for at least 5 hours to obtain high-zirconium brick dough. Step 6 involves polishing and trimming the brick material obtained in Step 5 to obtain high-zirconium bricks. Includes.

[0009] In one embodiment of the present invention, in step 1, each of the mixed components is melted at 1800°C-3000°C for at least 45 minutes and cooled to obtain a solid solution raw material in which the elements are uniformly distributed, or each of the mixed components is react-sintered in a high-temperature liquid phase at 1800°C-3000°C for at least 60 minutes and cooled to obtain a solid solution raw material in which the elements are uniformly distributed.

[0010] In one embodiment of the present invention, in step 3, the organic adhesive is at least one selected from polyvinyl alcohol (PVA), polyethylene glycol (PEG), polyacrylamide (PAM), polyimide adhesive, epoxy adhesive, phenolic resin adhesive, and urea resin adhesive, and the inorganic adhesive includes, but is not limited to, paraffin and wood ash.

[0011] In one embodiment of the present invention, the powder obtained in step 3 is placed in a mold and molded by cold isohydrostatic pressing at a pressure of 500-10,000 tons, or by using a press machine at a pressure of 500 tons or more, and held for at least 15 seconds to obtain the initial dough.

[0012] In one embodiment of the present invention, the mold includes, but is not limited to, a rubber mold, a polyurethane mold, or a metal mold.

[0013] In one embodiment of the present invention, the temperature-controlled heating device in step 5 is a programmable temperature control device, with a starting temperature of room temperature, a heating rate of 320-390°C / h, a heating time of at least 5 hours, an end temperature of 1600-1950°C, and a holding time of at least 1 hour.

[0014] In one embodiment of the present invention, the temperature-controlled heating device includes, but is not limited to, an electric heating device, an electromagnetic induction heating device, a vacuum heating device, a protective atmosphere heating device, a gas heating device, a plasma heating device, and a microwave heating device.

[0015] In one embodiment of the present invention, in step 5, the cooling annealing is performed using a programmable temperature control device, with the starting temperature set to the furnace temperature, the cooling rate set to 390-320°C / h, the cooling time set to at least 5 hours, and the final temperature set to room temperature.

[0016] In a third embodiment, the present invention provides high-zirconium bricks used to manufacture important ceramic products for various glass furnaces, including crucibles for special glass, high-zirconium ceramic stirring blades, high-zirconium ceramic bricks, high-zirconium drawer crucibles, high-zirconium shaped parts, and quartz furnaces.

[0017] Compared to the conventional technology, the beneficial effects of the present invention are as follows: This invention improves the optimal service life and cost performance of high-zirconium brick products by selecting rational raw materials for each component according to the demand for different types and components of glass liquid. Furthermore, this invention proposes a novel high-zirconium brick manufacturing process that controls heating and annealing cooling using a curved temperature control method with a programmable temperature control device. In the manufactured high-zirconium brick, each element is uniform throughout with no segregation, the density of the entire product is uniform and consistent, there are no defects such as needle-shaped pores, residual bubbles, and surface holes, and there is no risk of localized erosion and material leakage. The high-zirconium brick products manufactured using this process have a short delivery cycle and can be customized. The liquid-phase hardened structure is stable under high temperature conditions, the bubble precipitation rate is extremely low, the erosion resistance is strong, the thermal shock resistance is excellent, the heat penetration temperature decay characteristics are good, and the operation safety of the firing furnace is ensured. In particular, it has more significant advantages compared to molten casting AZS and molten casting 95 products in long-term working environments of 1550°C or higher. Furthermore, during customized production, cost control can be achieved by controlling ingredients according to the customer's actual needs, thus meeting the customer's different demands for cost performance. [Brief explanation of the drawing]

[0018] [Figure 1] This is a flowchart of the manufacturing process for high-zirconium bricks according to an embodiment of the present invention. [Figure 2] This is a micrograph of a high-zirconium brick sample according to an embodiment of the present invention. [Figure 3] This diagram illustrates the thermal shock and thermal penetration of a high-zirconium brick sample according to an embodiment of the present invention. [Figure 4A]This is a detection report on the linear expansion rate of a high zirconium brick sample according to an embodiment of the present invention. [Figure 4B] This is a Japanese translation of the detection report shown in Figure 4A. [Figure 5] This is a detection report on the bubble precipitation rate of a high zirconium brick sample at 1300 °C according to an embodiment of the present invention. [Figure 6] This is a detection report on the bubble precipitation rate of a high zirconium brick sample at 1500 °C according to an embodiment of the present invention. [Figure 7] This is a result diagram of the erosion resistance test of a crucible made of a high zirconium brick sample according to an embodiment of the present invention, a 41# zirconium corundum brick crucible, and a 95# fused-cast high zirconium brick.

Modes for Carrying Out the Invention

[0019] In order to make the object, technical solution and advantages of the present invention clearer, the technical solution in the embodiments of the present invention will be described more clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work belong to the protection scope of the present invention.

[0020] To address the defects present in high-zirconia refractory materials submitted in the background technology, this embodiment invents a manufacturing process for high-zirconia brick products. Furthermore, it aims to provide multiple high-zirconia brick component compositions according to different glass liquid varieties and component requirements, thereby improving the optimal service life and cost-effectiveness of high-zirconia brick products. For example, in this invention, the high-zirconia brick contains, by weight percent, 40-99% zirconium dioxide, 0.1%-60% aluminum oxide, and a total of 0.1%-40% yttrium oxide, iron oxide, titanium oxide, magnesium oxide, calcium oxide, and silicon oxide; or, by weight percent, 40-99% zirconium dioxide, 0.1%-60% magnesium oxide, and a total of 0.1%-40% yttrium oxide, iron oxide, titanium oxide, calcium oxide, and silicon oxide; or, by weight percent, 40-99% zirconium dioxide, 0.1%-6% calcium oxide. It contains 0% and a total of 0.1%-40% magnesium oxide, yttrium oxide, iron oxide, titanium oxide, and silicon oxide, or by weight percent, it contains 40-99% zirconium dioxide, 0.1%-60% chromium oxide, and a total of 0.1%-40% calcium oxide, magnesium oxide, yttrium oxide, iron oxide, titanium oxide, and silicon oxide, or by weight percent, it contains 40-99% zirconium dioxide, 0.1%-60% beryllium oxide, and a total of 0.1%-40% calcium oxide, magnesium oxide, yttrium oxide, iron oxide, titanium oxide, and silicon oxide. In order to avoid defects such as elemental segregation, porosity, uneven density, and surface microcracks in high-zirconium brick products produced by the molten casting process, the present invention improves the manufacturing process of high-zirconium bricks. First, each uniformly mixed component is reacted at 1800-3000°C for at least 45 minutes to form a molten liquid or solid phase structure, which is then cooled to obtain a uniformly distributed solid solution raw material. Specifically, each mixed component is melted at 1800-3000°C for at least 45 minutes and then cooled to obtain a solid solution raw material with uniformly distributed elements, or each mixed component is reacted and sintered in a high-temperature liquid phase at 1800-3000°C for at least 60 minutes and then cooled to obtain a solid solution raw material with uniformly distributed elements.Subsequently, the obtained solid solution raw material is pulverized into a powder with a D50 value of 0.2-100 μm, and then 0.1-5% of an organic or inorganic adhesive is added and mixed uniformly. After that, the mixture is press-molded in a mold under a pressure of 500 tons or more for at least 15 seconds to obtain the initial dough. The initial dough is heated from room temperature to 1600-1950°C using a temperature-controlled heating device within at least 5 hours, held at 1600°C or higher for at least 1 hour, and then cooled to room temperature within at least 5 hours to obtain high-zirconium bricks. The bricks are then polished and trimmed to obtain high-zirconium brick products.

[0021] In the specific implementation of the present invention, the organic adhesive is at least one selected from polyvinyl alcohol (PVA), polyethylene glycol (PEG), polyacrylamide (PAM), polyimide adhesive, epoxy adhesive, phenolic resin adhesive, and urea resin adhesive, and the inorganic adhesive includes, but is not limited to, paraffin and wood ash. The powder to which the adhesive is added is molded in a mold by cold isostatic pressing at a pressure of 500-10000 tons, or by pressing with a press machine at a pressure of 500 tons or more, and held for at least 15 seconds to obtain the initial dough. The molds include multiple types, including, but are not limited to, rubber molds, polyurethane molds, and metal molds. The temperature-controlled heating device employs a programmable temperature control device, with a starting temperature of room temperature, a heating rate of 320-390°C / h, a heating time of at least 5 hours, an end temperature of 1600-1950°C, and a holding time of at least 1 hour. Cooling annealing is performed using a programmable temperature control device, with the starting temperature set to the furnace temperature, the cooling rate set to 390-320°C / h, the cooling time set to at least 5 hours, and the ending temperature set to room temperature. The temperature-controlled heating device includes, but is not limited to, electric heating devices, electromagnetic induction heating devices, vacuum heating devices, protective atmosphere heating devices, gas heating devices, plasma heating devices, and microwave heating devices. In the specific implementation process, the temperature-controlled heating device employs a curved temperature control method to heat and cool the initial material of the high-zirconium brick, controlling the development of zirconium dioxide crystal grains during annealing. The resulting high-zirconium brick product has a uniform elemental distribution throughout, no segregation, uniform and consistent density, no defects such as needle-shaped pores, residual bubbles, or surface holes, and no localized erosion or material leakage. Therefore, high-zirconium brick products manufactured by the method of the present invention have a short delivery cycle and can be customized for production. The high-zirconium bricks produced by this invention are used to manufacture important ceramic products for various glass furnaces. These include, but are not limited to, crucibles for special glass, high-zirconium ceramic stirring blades, high-zirconium ceramic bricks, high-zirconium drawer crucibles, high-zirconium shaped components, and quartz furnaces.

[0022] Examples In this embodiment, the raw material components are, by mass%, 77% zirconium dioxide, 17% aluminum oxide, and a total of 5% yttrium oxide, titanium oxide, calcium oxide, magnesium oxide, and silicon oxide. Here, the weight of silicon oxide is 0.4%, and the weights of titanium oxide and calcium oxide are both 0.1%.

[0023] Step 1: Using a total mass of 5000g, each component was weighed according to its proportion, and after uniformly mixing the components, the mixture was dissolved at 1900°C for 60 minutes, and then cooled to obtain a solid solution raw material in which the elements were uniformly distributed. Step 2: The solid solution raw material obtained in Step 1, in which the elements are uniformly distributed, was pulverized into a powder with a D50 value of 0.2-20 μm. Step 3: 3% polyvinyl alcohol (PVA) organic adhesive was added to the powder obtained in Step 2 and then mixed uniformly. Step 4: The powder obtained in Step 3 was placed in a metal mold and held under a pressure of 600 tons for 20 seconds, and the initial dough was obtained by cold isostatic press molding. Step 5: The initial dough obtained in Step 4 was placed in a curved temperature controller in an electromagnetic induction heating device and heated from room temperature to 1950°C at 320°C / h within 5 hours. After that, it was kept warm at 1950°C for 2 hours, and then cooled from 1950°C to room temperature at 320°C / h within 6 hours to obtain high-zirconium brick dough. Step 6: The brick material obtained in Step 5 was polished and trimmed to obtain a high-zirconium brick sample.

[0024] Elemental distribution detection of high-zirconium brick samples The elemental distribution of the high-zirconium brick sample produced in Example 1 was detected by a specialized detection laboratory in Germany. Figure 2 is a microscopic image of the high-zirconium brick sample. The areas indicated by the white arrows in Figure 2 are clearly visible. These areas show a dense and highly dispersed particle distribution. These particles are mainly zirconium dioxide (ZrO2), and the ZrO2 particles are cleverly embedded in the substrate material, forming tight and stable bonds, ensuring the stable presence of the ZrO2 particles in the substrate and effectively avoiding the problem of destabilization rate of the stable phase. This not only enhances the overall strength and toughness of the high-zirconium brick but also expands the future application potential of the monoclinic zirconium dioxide crystal form.

[0025] Thermal shock and thermal penetration: practical application and testing. Thermal shock and thermal penetration tests were performed on the high-zirconium bricks manufactured in Example 1 using a box-type high-temperature furnace FM1800. First, the high-zirconium bricks were trimmed to a length of 320 mm, a width of 310 mm, and a thickness of 70 mm. Then, one side of the high-zirconium brick was heated to 1600°C at 40°C / h for 40 hours or less. After that, the high-zirconium brick was held at 1600°C for 4 hours, and the other side was exposed to room temperature. The temperature of the side exposed to room temperature was measured to evaluate its thermal shock performance and thermal penetration performance (Figure 3). Table 1 below shows the temperature change of the side exposed to room temperature during the heating process of one side of the high-zirconium brick, and whether or not cracks occurred on the surface.

[0026] Table 1: Temperature change statistics table [Table 1]

[0027] In this thermal shock resistance test, the temperature was raised from room temperature of 29°C to 1600°C over 40 hours and held at 1600°C for 4 hours. No visible abnormalities or cracks were observed on the inner or outer surfaces of the high-zirconium brick during the heating process. When the furnace temperature reached 1600°C, the temperature on the air side of the brick (the temperature of the surface exposed to air) was 600°C, resulting in a temperature difference of 1000°C due to thermal penetration. Therefore, the temperature decay was approximately 14°C per 1 mm thickness, demonstrating excellent thermal shock resistance and thermal penetration decay performance.

[0028] Thermal expansion coefficient test The high-zirconium brick samples produced in Example 1 were sent to the National Refractory Materials Quality Inspection and Detection Center for linear thermal expansion detection. As shown in the detection report in Figure 4, the linear thermal expansion of the high-zirconium bricks showed a continuous increasing process from 50-600°C (0.02%-0.38%), a continuous decreasing process from 650-1000°C (0.36%-0.22%), and 0.73% at 1400°C. Under the same conditions, the linear thermal expansion of molten cast AZS 41# from 100-1000°C was a progressively increasing 4.23-0.81%. As can be seen from the comparative data of high-zirconium bricks and molten cast AZS 41# in Table 2 below, at the operating temperature, the linear thermal expansion of the high-zirconium bricks was almost the same as that of AZS 41#, and the rate of crack occurrence during the preheating and thermal shock processes was relatively low, ensuring safety during the operation of the firing furnace.

[0029] Table 2: Comparison of linear thermal expansion coefficient data [Table 2]

[0030] Bubble precipitation test The high-zirconium brick samples produced in Example 1 were sent to the National Building Materials Industry Refractory Materials Product Quality Monitoring, Inspection and Testing Center for Bubble Deposition Testing. Figure 5-6 shows the detection report. As can be seen from the detection report, the high-zirconium brick had a bubble precipitation rate of 0 at 1300°C and a bubble precipitation rate of 0.1 at 1500°C. Table 3 shows comparative data of the bubble precipitation rates of high-zirconium brick, AZS41, and molten cast 95. Analysis of past data from the National Inspection Center shows that the bubble precipitation rate of molten cast AZS was 1-1.2 (with different differences depending on the elemental segregation sampling site, and gradually increasing in the later stages due to glass phase exudation during long-term use), and the bubble precipitation rate of molten cast 95 was 26.50 (excessive release due to volatilization of residual carbon in the early stages, and gradually decreasing in the later stages). From the comparative data, it was found that high-zirconium brick can effectively suppress the occurrence of bubble defects in glass furnace materials. Because the elemental composition and density are uniform and there are no changes in phase structure, bubble precipitation is always extremely low, and it can be maintained stably over a long period of time.

[0031] Table 3: Comparative data on bubble deposition rates [Table 3]

[0032] Corrosion resistance test This test compared the corrosion resistance of crucibles made from high-zirconium brick samples produced in Example 1, 41# zirconium corundum brick crucibles, and 95# molten-cast high-zirconium brick crucibles. High-lead glass (corrosion medium) was added to the crucibles, and the test method was the static crucible method, with an experimental temperature of 1600°C and a heat retention period of 36 hours. As can be seen from Figure 7c, silicon oxide precipitated inside the 41# zirconium corundum brick crucible, and glass penetrated into both the brick surface and the crucible pores, causing honeycomb-like pitting corrosion. As can be seen from Figure 7b, in the molten-cast 95# high-zirconium brick, pore expansion of about 1 mm was observed at the liquid surface, and further color changes occurred to a depth of about 5 mm inside the brick. The cloudiness of the glass suggests that component substitution may have occurred. In contrast, in the crucible made with the high-zirconium brick sample produced in Example 1, the pore size at the liquid surface was approximately 0.5 mm (Figure 7a), no significant color change was observed at the contact points with the high-lead glass, and the glass was relatively transparent, indicating that the high-zirconium brick produced in this example has excellent corrosion resistance.

[0033] Although embodiments of the present invention have been described, those skilled in the art will understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is limited by the appended claims and equivalents.

Claims

1. By weight percent, it contains 40-99% zirconium dioxide, 0.1-60% aluminum oxide, and a total of 0.1-40% yttrium oxide, iron oxide, titanium oxide, magnesium oxide, calcium oxide, silicon oxide, or By weight percent, it contains 40-99% zirconium dioxide, 0.1-60% magnesium oxide, and a total of 0.1-40% yttrium oxide, iron oxide, titanium oxide, calcium oxide, silicon oxide, or By weight percentage, it contains 40-99% zirconium dioxide, 0.1-60% calcium oxide, and a total of 0.1-40% magnesium oxide, yttrium oxide, iron oxide, titanium oxide, and silicon oxide, or By weight percent, it contains 40-99% zirconium dioxide, 0.1-60% chromium oxide, and a total of 0.1-40% calcium oxide, magnesium oxide, yttrium oxide, iron oxide, titanium oxide, silicon oxide, or A high-zirconium brick characterized by containing, by weight percent, 40-99% zirconium dioxide, 0.1-60% beryllium oxide, and a total of 0.1-40% calcium oxide, magnesium oxide, yttrium oxide, iron oxide, titanium oxide, and silicon oxide.

2. A process for manufacturing a high-zirconium brick according to claim 1, Step 1 involves weighing each component, mixing them uniformly, reacting them at 1800°C-3000°C for at least 45 minutes to form a molten liquid or solid phase structure, and then cooling to obtain a solid solution raw material. Step 2 involves grinding the solid solution raw material obtained in Step 1 into a powder with a D50 value of 0.2-100 μm. Step 3 involves adding 0.1-5% of an organic or inorganic adhesive to the powder obtained in Step 2 and mixing it uniformly. Step 4 involves placing the powder obtained in step 3 into a mold and press-molding it under a pressure of 500 tons or more for at least 15 seconds to obtain the initial dough. Step 5 involves heating the initial dough obtained in Step 4 from room temperature to 1600-1950°C using a temperature-controlled heating device for at least 5 hours, maintaining it at 1600°C or higher for at least 1 hour, and then cooling it down to room temperature for at least 5 hours to obtain high-zirconium brick dough. Step 6 involves polishing and trimming the brick material obtained in Step 5 to obtain high-zirconium bricks. A manufacturing process characterized by including the following.

3. The manufacturing process according to claim 2, characterized in that in step 1, each of the mixed components is melted at 1800°C-3000°C for at least 45 min and cooled to obtain a solid solution raw material in which the elements are uniformly distributed, or each of the mixed components is react-sintered in a high-temperature liquid phase at 1800°C-3000°C for at least 60 min and cooled to obtain a solid solution raw material in which the elements are uniformly distributed.

4. The manufacturing process according to claim 2, characterized in that, in step 3, the organic adhesive is at least one selected from polyvinyl alcohol (PVA), polyethylene glycol (PEG), polyacrylamide (PAM), polyimide adhesive, epoxy adhesive, phenolic resin adhesive, and urea resin adhesive, and the inorganic adhesive includes, but is not limited to, paraffin and wood ash.

5. The manufacturing process according to claim 2, characterized in that the powder obtained in step 3 is placed in a mold and molded by cold isohydrostatic pressing at a pressure of 500-10,000 tons, or molded using a press machine at a pressure of 500 tons or more, and held for at least 15 seconds to obtain the initial dough.

6. The manufacturing process according to claim 2, characterized in that the mold includes, but is not limited to, a rubber mold, a polyurethane mold, and a metal mold.

7. The manufacturing process according to claim 2, wherein the temperature-controlled heating device in step 5 is a programmable temperature control device, the starting temperature is set to room temperature, the heating rate is set to 320-390°C / h, the heating time is set to at least 5 hours, the final temperature is set to 1600-1950°C, and the holding time is set to at least 1 hour.

8. The manufacturing process according to claim 7, characterized in that the temperature-controlled heating device includes, but is not limited to, an electric heating device, an electromagnetic induction heating device, a vacuum heating device, a protective atmosphere heating device, a gas heating device, a plasma heating device, and a microwave heating device.

9. The manufacturing process according to claim 2, wherein in step 5, the cooling annealing is performed using a programmable temperature control device, with the starting temperature set to the furnace temperature, the cooling rate set to 390-320°C / h, the cooling time set to at least 5 hours, and the final temperature set to room temperature.

10. The high-zirconium brick according to claim 1, used for manufacturing important ceramic products for various glass furnaces, including crucibles for special glass, high-zirconium ceramic stirring blades, high-zirconium ceramic bricks, high-zirconium drawer crucibles, high-zirconium shaped parts, and quartz furnaces.

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