CN115368118B - AZS fused brick with ultralow bubble precipitation rate and preparation method thereof - Google Patents
AZS fused brick with ultralow bubble precipitation rate and preparation method thereof Download PDFInfo
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- C04B35/10—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on aluminium oxide
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- C04B35/109—Refractories by fusion casting containing zirconium oxide or zircon (ZrSiO4)
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- C03B5/16—Special features of the melting process; Auxiliary means specially adapted for glass-melting furnaces
- C03B5/42—Details of construction of furnace walls, e.g. to prevent corrosion; Use of materials for furnace walls
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Abstract
The invention belongs to the technical field of preparation of fused bricks, and particularly relates to an AZS fused brick with an ultralow bubble precipitation rate and a preparation method thereof. The AZS fused brick with the ultralow bubble precipitation rate comprises the following chemical components in percentage by mass: zrO (ZrO) 2 30‑38％，SiO 2 8‑13％，Na 2 O0.7‑1.4％，Nb 2 O 5 0‑0.15％，Fe 2 O 3 ≤0.03％，TiO 2 Less than or equal to 0.03 percent, C+N less than or equal to 0.009 percent and the balance of Al 2 O 3 . The invention provides an AZS fused brick, which reduces the bubble precipitation rate to the level of alpha beta alumina bricks according to JC/T639 standard, thereby avoiding pollution, expanding the application range of the AZS fused brick and reducing the cost; the invention also provides a preparation method of the composite.
Description
Technical Field
The invention belongs to the technical field of preparation of fused bricks, and particularly relates to an AZS fused brick with an ultralow bubble precipitation rate and a preparation method thereof.
Background
AZS electric melting bricks are widely applied to various parts of a glass furnace, such as a melting tank wall, a paving, a breast wall, a material channel, a rising channel and other clarifying and cooling parts of a float glass furnace and a common bottle and tank glass furnace, due to good erosion resistance and relatively low pollution to molten glass. Because AZS electric melting bricks have the problem of higher bubble precipitation rate and have bad influence on the quality of glass products, alpha beta alumina bricks with extremely low bubble precipitation rate are mostly adopted at cooling forming parts of high-grade glass melting furnaces such as photovoltaic and ultrawhite glass melting furnaces. With the development of glass manufacturing technology, the melting temperature and the melting amount are improved, the erosion speed of the brick material by the glass feed liquid is increased sharply when the alpha beta alumina brick is adopted, the service time is shortened greatly, the solving direction of the situation is divided into two parts, namely the erosion resistance of the alpha beta alumina brick is improved, and the bubble precipitation rate of the AZS fused brick is reduced to the level of the pure alpha beta alumina brick. Because the AZS fused brick has better erosion resistance than the alpha beta alumina brick, has lower price and is more easily accepted by the market.
The composition, physicochemical index and product characteristics of AZS fused bricks are well known in the art, but the problem of how to reduce the bubble precipitation rate of AZS fused bricks of various brands has not been proposed. JC/T493-2015 standard of cast zirconia-corundum refractory products for glass kiln specifies that the standard of AZS fused cast bricks with the lowest bubble precipitation rate is less than or equal to 1 percent, for example, the brand: AZS-41Y. JC/T494-2013 standard of fused cast corundum refractory products for glass kiln, the standard of the bubble precipitation rate of alpha beta alumina bricks is less than or equal to 0.3 percent, such as the brand: RA-M. The test conditions specified by the two were kept at 1300 ℃ for 10hr using ordinary soda lime glass according to JC/T639 standard. If the bubble precipitation rate of the AZS fused brick is reduced to the level of 0.3% of the bubble precipitation rate of the alpha beta alumina brick by 1%, the AZS fused brick can be applied to the using part of the alpha beta alumina brick, the erosion speed of the relevant part is reduced, and the service life of the kiln is prolonged.
The patent CN103771890B discloses a production method of an AZS fused cast zirconia corundum octagonal cylinder grid body, which comprises the following raw materials, by weight, 11-14% of silicon dioxide, 59-64% of aluminum oxide, 23-27% of zirconium dioxide, 0.7-1.3% of sodium oxide, 0.1-0.4% of ferric oxide and 0.1-0.3% of titanium dioxide. The production process comprises mixing the raw materials, stirring, remelting to obtain casting solution, wherein the melting temperature is 1900-2000 deg.C, the melting time is 80-90min, oxygen is blown twice in the melting process, the first time is 5min after 60min of melting, the second time is 13-23min, and the second time is 2min, wherein the flow rate of oxygen blowing is 25M each time 3 And (3) casting and forming by using a mould, and cooling for 60-72 hours at the room temperature of 18-25 ℃. Effectively solves the problems of peeling, cracking and insufficient corrosion resistance existing in the prior art.
Patent CN104909781A discloses a method for producing an electric melting brick for a tongue crown of a glass kiln, which comprises the following raw materials in percentage by weight 2 O 3 ) 79-83%, silicon dioxide (SiO) 2 ) 8-9% sodium oxide (Na) 2 O) 0.9-1.1% and zirconia (ZrO) 2 ) 9-11%, the prepared product reduces the knot of the electric melting brick burst of the tongue arch, effectively controls the stopping of the kiln operation caused by the burst and collapse of the tongue arch of the glass kiln, and has convenient use and good effect.
The patent CN101747067B discloses a glass kiln regenerator cone brick, which comprises, by weight, 16-20% of silicon dioxide, 48-52% of aluminum oxide, 29-35% of zirconium dioxide, 1.3-2.0% of sodium oxide, 0.1-0.4% of ferric oxide and 0.1-0.3% of titanium dioxide. The prepared product has good thermal stability and high-temperature erosion resistance, no layering and peeling, no flue blocking phenomenon, high thermal conductivity and long service life.
Although the above patents all disclose the preparation of the fused brick, the above patents do not solve the problem of foaming of the fused brick, and particularly do not pay attention to the problem of pollution of the fused brick at the contact part of glass liquid to products.
Disclosure of Invention
The technical problem to be solved by the invention is to provide the AZS fused brick, according to JC/T639 standard, the bubble precipitation rate is reduced to the level of alpha beta alumina brick, the pollution is avoided, the application range of the AZS fused brick is enlarged, and the cost is reduced; the invention also provides a preparation method of the composite.
According to JC/T639 standard, common soda lime glass is adopted, and the bubble separation rate is less than or equal to 0.15% under the condition of heat preservation for 10 hours at the temperature of l300 ℃.
According to JC/T639 standard, common soda-lime glass is adopted, and the bubble separation rate is 0 under the condition of heat preservation for 10 hours at the temperature of l300 ℃.
The AZS fused brick with the ultralow bubble precipitation rate comprises the following chemical components in percentage by mass:
the preparation method of the AZS fused brick with the ultralow bubble precipitation rate comprises the following steps: mixing zircon sand, desilication zirconium, alumina and sodium carbonate (alkali powder) raw materials, putting into a three-phase electric arc furnace for melting, adding niobium oxide in the melting process, blowing oxygen after melting, clarifying, casting into a sand mold, naturally cooling to room temperature, taking out and cleaning sand, and grinding and cutting to obtain the AZS fused brick with ultralow bubble precipitation rate.
Fe in zircon sand used 2 O 3 ≤0.03wt％，Ti0 2 ≤0.03wt％。
Fe in the alumina used 2 O 3 ≤0.015wt％，Ti0 2 ≤0.01wt％。
The chemical components of the desilication zirconium are ZrO according to the mass ratio 2 72-80％，SiO 2 19-27％，Al 2 O 3 +Fe 2 O 3 +TiO 2 +MgO+K 2 O+CaO is less than or equal to 1%, wherein Fe 2 O 3 ≤0.01％，TiO 2 ≤0.03％。
The preparation process of the desilication zirconium comprises the following steps: adopts Fe 2 O 3 ≤0.03wt％、TiO 2 Adding 0.03wt% or less of zircon sand as raw material, smelting in a three-phase electric arc furnace at high temperature of 2300 deg.c, introducing the feed liquid to the pressure higher than 1MPa via constant speed outflow, blowing ball with high pressure gas, and cooling.
The material liquid after being melted is discharged at a constant speed through the constant-speed discharging process. The effluent device adopted by the constant-speed effluent process has the function of controlling the effluent at constant speed, further controlling the temperature and the viscosity of the effluent. The cooling device is applied for the applicant, and the discussion is not repeated here.
The zirconia content of the used high-zirconia brick is more than or equal to 94 weight percent.
The melting process comprises the following steps: the raw material input amount is 2 tons each time, the raw materials are melted for 45-60min after the feeding is completed, the current range is controlled between 3000-3500A, in the process, the electrode is always in the raw materials, and black lead tools can not be used in the raking operation in the process. After the melting is substantially completed, the electrode is lifted and melted by an arc until the raw materials are completely melted.
Clarifying for 9-12min after oxygen blowing is completed, and the current is 3000-3500A.
The melting furnace adopted in the melting process adopts a black lead tool for raking operation, and an iron and stainless steel tool cannot be used.
The casting temperature is 1750-1850 ℃, and the casting speed is not lower than 15kg/s.
Specifically, the preparation method of the AZS fused brick with the ultralow bubble precipitation rate comprises the following steps:
(1) Mixing zircon sand, desilication zirconium, aluminum oxide and sodium carbonate raw materials, putting into a three-phase arc furnace for melting, and adding niobium oxide in the melting process;
(2) Firstly melting for 45-60min at 3000-3500A current, then attaching an electrode above the raw material at 4000-5500A current, melting by using an electric arc, and finally placing the electrode into the feed liquid 9-12min before oxygen blowing, wherein the placing depth is 50-200mm, and the current is controlled to be 3900-4100A;
(3) Performing clarification operation for 9-12min after oxygen blowing is completed, wherein the current is 3000-3500A, and when no raw material exists in the furnace and the material liquid surface is bright, the clarification is completed;
(4) Casting the feed liquid into a sand mold at 1750-1850 ℃ and at a casting speed of not lower than 15kg/s, naturally cooling to room temperature, taking out, cleaning sand, and grinding and cutting to obtain the AZS fused brick with ultralow bubble precipitation rate.
The AZS fused brick with ultralow bubble precipitation rate adopts Fe 2 O 3 、TiO 2 Zircon sand and ZrO with the content of respectively less than or equal to 0.03 percent 2 The content is 72-80%, siO 2 19-27% of Al 2 O 3 +Fe 2 O 3 +TiO 2 +MgO+K 2 O+CaO is less than or equal to 1%, wherein Fe 2 O 3 ≤0.01％，TiO 2 AZS fused bricks prepared by taking desilication zirconium less than or equal to 0.03 percent as raw materials reach the quality requirement of alpha beta alumina bricks, and further preferably 0.05 to 0.15 percent of Nb is added 2 O 5 Fe of AZS fused brick manufactured by adopting the formula as raw material 2 O 3 、TiO 2 The content is respectively less than or equal to 0.03 percent, and the bubble separation rate is 0.
Compared with the prior art, the invention has the following beneficial effects:
(1) According to the preparation method of the AZS fused brick, according to JC/T639 standard, under the condition of adopting common soda lime glass and preserving heat for 10 hours at the temperature of l300 ℃, the bubble precipitation rate is less than or equal to 0.15 percent, the level of alpha beta alumina bricks is reached, and the application range of the AZS fused brick is enlarged.
(2) By adopting the preparation method of the AZS fused brick, nb is added 2 O 5 According to JC/T639 standard, the bubble separation rate will be 0 under the condition of adopting ordinary soda-lime glass and keeping the temperature at l300 ℃ for 10 hours.
(3) The manufacturing cost of the AZS fused brick prepared by the invention is equal to that of a common AZS fused brick, but is reduced by 30% compared with that of an alpha beta alumina brick, the performance of the AZS fused brick reaches that of the alpha beta alumina, and the market acceptance is high.
(4) The AZS fused brick prepared by the invention has low bubble leaching rate, low vitreous phase leaching amount and strong glass liquid erosion resistance.
Detailed Description
The invention will be further illustrated with reference to specific examples.
The sources of production of the raw materials described in examples 1-4 below:
zircon sand is an African import, and the brand of zircon sand is ZC;
the alumina is imported australian alumina selected from the group consisting of daylighting harbors;
the desilication zirconium is a self-made product, and the preparation steps comprise the following steps:
adopts Fe 2 O 3 ≤0.03wt％、TiO 2 Adding 0.03wt% or less of zircon sand as a raw material, adding the used high-zirconium brick and carbon powder, smelting at a high temperature of not lower than 2300 ℃ in a three-phase electric arc furnace, introducing the feed liquid above high-pressure gas with the pressure of 1.3MPa through a uniform outflow process, blowing balls by using the high-pressure gas, and finally cooling to obtain the self-made desilication zirconium a. The chemical components of the desilication zirconium are ZrO 2 74.2％，SiO 2 25％，Al 2 O 3 +Fe 2 O 3 +TiO 2 +MgO+K 2 O+cao=0.8%, where Fe 2 O 3 ≤0.01％，TiO 2 ≤0.03％。
Adopts Fe 2 O 3 ≤0.03wt％、TiO 2 Adding used high-zirconium brick and carbon powder into zircon sand with the weight percentage of less than or equal to 0.03 percent as raw materials, smelting the zircon sand in a three-phase electric arc furnace at a high temperature, wherein the smelting temperature is not lower than 2300 ℃, and then discharging the zircon sand at a constant speedIntroducing the liquid above high-pressure gas with the pressure of 1.7MPa, blowing balls by using the high-pressure gas, and finally cooling to obtain the self-made desilication zirconium b. The chemical components of the desilication zirconium are ZrO 2 80％，SiO 2 19％，Al 2 O 3 +Fe 2 O 3 +TiO 2 +MgO+K 2 O+cao=1%, where Fe 2 O 3 ≤0.01％，TiO 2 ≤0.03％。
Adopts Fe 2 O 3 ≤0.03wt％、TiO 2 Adding 0.03wt% or less of zircon sand as a raw material, adding the used high-zirconium brick and carbon powder, smelting at a high temperature of not lower than 2300 ℃ in a three-phase electric arc furnace, introducing the feed liquid above high-pressure gas with the pressure of 1.1MPa through a uniform outflow process, blowing balls by using the high-pressure gas, and finally cooling to obtain the self-made desilication zirconium c. The chemical components of the desilication zirconium are ZrO 2 72％，SiO 2 27％，Al 2 O 3 +Fe 2 O 3 +TiO 2 +MgO+K 2 O+cao=1%, where Fe 2 O 3 ≤0.01％，TiO 2 ≤0.03％。
Example 1
The chemical composition of the AZS fused brick with the ultralow bubble precipitation rate is shown in a table 1.
The preparation method of the AZS fused brick with the ultralow bubble precipitation rate comprises the following steps:
(1) Mixing zircon sand, self-made desilication zirconium a, aluminum oxide and alkali powder raw materials, and putting the mixture into a three-phase electric arc furnace for melting;
(2) Firstly, melting for 60min at a current of 3000A, then raising the electrode to be close to the liquid level at a current of 5000A, melting for 20min by utilizing an electric arc, finally carrying out submerged arc melting for 10min before oxygen blowing, placing the electrode under the liquid level, controlling the submerged arc depth to be 100mm, and controlling the current to be 4000A; in the process, a black lead tool is used for carrying out the material skimming operation in the furnace to reduce Fe 2 O 3 Content, forbid to use iron, stainless steel material tool to carry on the raking work;
(3) After oxygen blowing is completed, clarifying for 10min, wherein the current is 3200A, and when the raw material in the furnace is not present and the material liquid surface is bright, clarifying is completed;
(4) Casting the feed liquid into a sand mold with the inner diameter of 240mm and 300mm and 450mm, wherein the casting temperature is 1800 ℃, the casting speed is not lower than 15kg/s, naturally cooling to room temperature, taking out and cleaning sand, and grinding and cutting to obtain the AZS electric melting brick with the ultralow bubble precipitation rate.
Example 2
The chemical composition of the AZS fused brick with the ultralow bubble precipitation rate is shown in a table 1.
The preparation method of the AZS fused brick with the ultralow bubble precipitation rate comprises the following steps:
(1) Mixing zircon sand, self-made desilication zirconium b, aluminum oxide and alkali powder raw materials, and putting the mixture into a three-phase electric arc furnace for melting;
(2) Firstly, melting for 45min at a current 3500A, then raising the electrode to be close to the liquid level at a current 4000A, melting for 15min by utilizing electric arc melting, finally carrying out submerged arc melting 9min before oxygen blowing, placing the electrode under the liquid level, controlling the submerged arc depth to be 50mm, and controlling the current to be 3900A; in the process, a black lead tool is used for carrying out the material skimming operation in the furnace to reduce Fe 2 O 3 Content, forbid to use iron, stainless steel material tool to carry on the raking work;
(3) After oxygen blowing is completed, clarifying for 9min, wherein the current is 3000A, and when the raw material in the furnace is not present and the material liquid surface is bright, clarifying is completed;
(4) Casting the feed liquid into a sand mold with the inner diameter of 240mm and 300mm and 450mm, wherein the casting temperature is 1750 ℃, the casting speed is not lower than 15kg/s, naturally cooling to room temperature, taking out and cleaning sand, and grinding and cutting to obtain the AZS electric melting brick with the ultralow bubble precipitation rate.
Example 3
The chemical composition of the AZS fused brick with the ultralow bubble precipitation rate is shown in a table 1.
The preparation method of the AZS fused brick with the ultralow bubble precipitation rate comprises the following steps:
(1) Mixing zircon sand, self-made desilication zirconium c, aluminum oxide and alkali powder raw materials, and putting the mixture into a three-phase electric arc furnace for melting;
(2) First melting at current 3200A for 50min, thenAt current 5500A, raising the electrode close to the liquid surface, melting for 10min by utilizing an electric arc, and finally performing submerged arc melting 12min before oxygen blowing, placing the electrode under the liquid surface, wherein the submerged arc depth is 200mm, and controlling the current to 4100A; after the electrode is placed, niobium pentoxide is added from the furnace door, and in the process, a black lead tool is used for carrying out in-furnace raking operation to reduce Fe 2 O 3 Content, forbid to use iron, stainless steel material tool to carry on the raking work;
(3) After oxygen blowing is completed, clarifying for 12min, wherein the current is 3500A, and when the raw material in the furnace is not present and the material liquid surface is bright, clarifying is completed;
(4) Casting the feed liquid into a sand mold with the inner diameter of 240mm and 300mm and 450mm, wherein the casting temperature is 1850 ℃, the casting speed is not lower than 15kg/s, naturally cooling to room temperature, taking out and cleaning sand, and grinding and cutting to obtain the AZS fused brick with the ultralow bubble precipitation rate.
Example 4
The chemical composition of the AZS fused brick with the ultralow bubble precipitation rate is shown in a table 1.
The preparation method of the AZS fused brick with the ultralow bubble precipitation rate comprises the following steps:
(1) Mixing zircon sand, self-made desilication zirconium a and alumina raw materials, adding sodium carbonate, and putting into a three-phase electric arc furnace for melting;
(2) Firstly melting at current 3500A for 45min, then at current 4500A, raising the electrode close to the liquid surface, melting for 18min by using an electric arc, finally melting in a submerged arc 10min before oxygen blowing, placing the electrode under the liquid surface for melting, controlling the submerged arc depth to be 80mm, and controlling the current to 4000A; adding niobium pentoxide from a furnace door after the electrode is placed; in the process, a black lead tool is used for carrying out the material skimming operation in the furnace to reduce Fe 2 O 3 Content, forbid to use iron, stainless steel material tool to carry on the raking work;
(3) After oxygen blowing is completed, clarifying for 10min, wherein the current is 3000A, and when the raw material in the furnace is not present and the material liquid surface is bright, clarifying is completed;
(4) Casting the feed liquid into a sand mold with the inner diameter of 240mm and 300mm and 450mm, wherein the casting temperature is 1780 ℃, the casting speed is not lower than 15kg/s, naturally cooling to room temperature, taking out and cleaning sand, and grinding and cutting to obtain the AZS electric melting brick with the ultralow bubble precipitation rate.
Comparative example 1
The chemical composition of the AZS fused brick is shown in table 1.
A method for preparing an AZS fused brick was the same as in example 1, except that homemade desilication zirconium was replaced with domestic hollow sphere desilication zirconium.
Comparative example 2
The chemical composition of the alpha beta alumina brick is shown in table 1.
A method of preparing αβ alumina, the same as in example 1, wherein the raw materials do not include desilicated zirconium and zircon sand; the alumina is Sumitomo A200 alumina; the bubble deposition rate is usually 0, but the erosion resistance is poor.
Comparative example 3
The chemical composition of the AZS fused brick is shown in table 1.
A preparation method of AZS fused bricks is the same as in example 1, but zircon sand raw material is replaced by EB zircon sand of imported ILUKA company, but homemade desilication zirconium is replaced by domestic hollow sphere desilication zirconium.
Comparative example 4
The chemical composition of the AZS fused brick is shown in table 1.
A method for preparing an AZS fused brick was the same as in example 1, except that zircon sand raw material was replaced with EB zircon sand from the company of the importation ILUKA; replacing the self-made desilication zirconium with domestic hollow sphere desilication zirconium; the alumina is replaced by domestic AO-1 high temperature alumina.
Comparative example 5
The chemical composition of the AZS fused brick is shown in table 1.
A method for preparing an AZS fused brick is the same as in example 3, but zircon sand adopts EB zircon sand of the imported ILUKA company, desilication zirconium adopts domestic hollow sphere desilication zirconium, and alumina adopts imported Australian alumina selected from Japanese ports.
The chemical components of the AZS electrofused bricks or the alumina bricks prepared in the above examples and comparative examples were analyzed by X-ray fluorescence spectrometry, wherein the c+n content was analyzed by electron probe alone, and the analysis results are shown in table 1.
Table 1 chemical compositions of fused bricks prepared in examples and comparative examples
The capacitor bricks prepared in examples 1-4 and comparative examples 1-5 above were tested for bubble separation rate according to JC/T639 standard using ordinary soda lime glass at 1300℃for 10 hr. Detecting the apparent porosity and the volume density according to the GB/T2997 standard; glass phase exudation and glass liquid erosion resistance tests were performed according to JC/T805 and JC/T806 standards; the above detection results are shown in Table 2.
Table 2 performance results of the fused bricks prepared in examples and comparative examples
From the above, it can be seen that the bubble precipitation rate of the fused AZS brick prepared by the invention is low, and trace Nb is introduced 2 O 5 After that, the bubble separation rate was reduced to 0. When the bubble precipitation rate of the electric smelting AZS brick is 0, pollution to glass products caused by bubble precipitation is avoided, so that the electric smelting AZS brick can be applied to cooling and forming parts of electronic, photovoltaic and high-grade bottle and tank glass, and the electric smelting AZS brick can replace an alpha beta alumina brick with higher price, reduce the purchase cost of customers and expand the application range of the electric smelting AZS brick. At present, the price of the AZS fused brick is usually 3-5 ten thousand yuan/ton, and the price of the alpha beta alumina brick is 5-7 ten thousand yuan/ton.
The AZS fused brick prepared by the invention has the advantages that the seepage quantity of the glass phase is low, the glass liquid corrosion resistance is improved, and the product performance is greatly improved.
Of course, the foregoing is merely preferred embodiments of the present invention and is not to be construed as limiting the scope of the embodiments of the present invention. The present invention is not limited to the above examples, and those skilled in the art will appreciate that the present invention is capable of equally varying and improving within the spirit and scope of the present invention.
Claims (10)
1. A preparation method of an AZS fused brick with ultralow bubble precipitation rate is characterized by comprising the following steps: the method comprises the following steps: mixing zircon sand, desilication zirconium, aluminum oxide and sodium carbonate raw materials, putting into a three-phase arc furnace for melting, adding niobium oxide in the melting process, blowing oxygen after the melting is completed, clarifying, casting into a sand mold, naturally cooling to room temperature, taking out and cleaning sand, and grinding and cutting to obtain the AZS fused brick with ultralow bubble precipitation rate;
according to the mass percentage, the AZS fused brick with the ultralow bubble precipitation rate consists of the following chemical components:
ZrO 2 30-38%
SiO 2 8-13%
Na 2 O 0.7-1.4%
Nb 2 O 5 0-0.15% and not equal to 0
Fe 2 O 3 ≤0.03%
TiO 2 ≤0.03%
C+N ≤0.009%
The balance of Al 2 O 3 。
2. The method for preparing the AZS fused brick with the ultralow bubble precipitation rate according to claim 1, which is characterized in that: fe in zircon sand 2 O 3 ≤0.03wt%，Ti0 2 ≤0.03wt%。
3. The method for preparing the AZS fused brick with the ultralow bubble precipitation rate according to claim 1, which is characterized in that: fe in alumina 2 O 3 ≤0.015wt%，Ti0 2 ≤0.01wt%。
4. The method for preparing the AZS fused brick with the ultralow bubble precipitation rate according to claim 1, which is characterized in that: the chemical components of the desilication zirconium are ZrO according to the mass ratio 2 72-80%, siO 2 19-27% of Al 2 O 3 +Fe 2 O 3 +TiO 2 +MgO+K 2 O+CaO is less than or equal to 1%, wherein Fe 2 O 3 ≤0.01%，TiO 2 ≤0.03%。
5. The method for preparing the AZS fused brick with the ultralow bubble precipitation rate according to claim 4, which is characterized in that: the preparation process of the desilication zirconium comprises the following steps: adopts Fe 2 O 3 ≤0.03wt%、TiO 2 Adding zircon sand accounting for less than or equal to 0.03 weight percent as a raw material, adding the used high-zirconium brick and carbon powder, carrying out high-temperature smelting in a three-phase electric arc furnace, wherein the smelting temperature is not lower than 2300 ℃, then introducing the feed liquid above high-pressure gas with the pressure of more than 1MPa through a uniform outflow process, blowing balls by using the high-pressure gas, and finally cooling to obtain the high-zirconium brick.
6. The method for preparing the AZS fused brick with the ultralow bubble precipitation rate according to claim 5, which is characterized in that: the zirconia content in the high-zirconia brick is more than or equal to 94wt%.
7. The method for preparing the AZS fused brick with the ultralow bubble precipitation rate according to claim 1, which is characterized in that: the melting process comprises the following steps: firstly melting for 45-60min at 3000-3500A, then carrying out open arc melting and submerged arc melting by utilizing an electric arc, and finally, until the raw materials are completely melted.
8. The method for preparing the AZS fused brick with the ultralow bubble precipitation rate according to claim 1, which is characterized in that: clarifying for 9-12min after oxygen blowing is completed, and the current is 3000-3500A.
9. The method for preparing the AZS fused brick with the ultralow bubble precipitation rate according to claim 1, which is characterized in that: the casting temperature is 1750-1850 ℃, and the casting speed is not lower than 15kg/s.
10. An AZS fused brick with an ultralow bubble precipitation rate is characterized in that: is prepared by the preparation method of any one of claims 1 to 9.
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| WO2016013384A1 (en) * | 2014-07-24 | 2016-01-28 | 旭硝子株式会社 | Alumina-zirconia-silica fused-cast refractory, glass melting furnace, and method for producing glass plate |
| CN107266089A (en) * | 2017-06-27 | 2017-10-20 | 江苏徐耐新材料科技股份有限公司 | A kind of production method of the AZS of anti-deformation |
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| CN1059704A (en) * | 1991-11-02 | 1992-03-25 | 李起胜 | Making technology for desilicated zirconium |
| FR2955577B1 (en) * | 2010-01-28 | 2014-06-20 | Saint Gobain Ct Recherches | REFRACTORY PRODUCT HAVING A HIGH ZIRCONY CONTENT. |
| JP5749770B2 (en) * | 2013-08-21 | 2015-07-15 | サンゴバン・ティーエム株式会社 | High zirconia electric fusion cast refractory |
| CN104446545A (en) * | 2014-11-25 | 2015-03-25 | 淄博旭硝子刚玉材料有限公司 | Fusing refractory material damper block and preparation method thereof |
| CN104926328A (en) * | 2015-06-16 | 2015-09-23 | 郑州远东耐火材料有限公司 | Fused zirconia corundum low-seepage brick production method |
| CN107555971B (en) * | 2017-09-29 | 2021-02-02 | 淄博艾杰旭刚玉材料有限公司 | High-resistivity electric-melting AZS brick at high temperature and preparation method thereof |
| CN108218192B (en) * | 2018-01-31 | 2021-02-02 | 淄博艾杰旭刚玉材料有限公司 | Electric melting AZS brick resistant to low-iron glass corrosion |
| CN108752017B (en) * | 2018-04-25 | 2023-04-28 | 郑州新光色耐火材料有限公司 | Fused zirconia corundum brick and preparation method thereof |
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| WO2016013384A1 (en) * | 2014-07-24 | 2016-01-28 | 旭硝子株式会社 | Alumina-zirconia-silica fused-cast refractory, glass melting furnace, and method for producing glass plate |
| CN107266089A (en) * | 2017-06-27 | 2017-10-20 | 江苏徐耐新材料科技股份有限公司 | A kind of production method of the AZS of anti-deformation |
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