CN113072377A - Components of high-erosion-resistance zirconia-corundum brick, melting process and melting device - Google Patents
Components of high-erosion-resistance zirconia-corundum brick, melting process and melting device Download PDFInfo
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- B02C18/00—Disintegrating by knives or other cutting or tearing members which chop material into fragments
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- B02C18/08—Disintegrating by knives or other cutting or tearing members which chop material into fragments with rotating knives within vertical containers
- B02C18/10—Disintegrating by knives or other cutting or tearing members which chop material into fragments with rotating knives within vertical containers with drive arranged above container
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
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Abstract
The invention discloses components of a high erosion resistance zirconia-corundum brick, a melting process and a melting device, wherein the components comprise the following components in percentage by mass: zirconium dioxide 63% -68%, silicon dioxide 3% -10%, aluminium oxide 20% -32%, sodium oxide 0.3% -1%, diboron trioxide 0.5% -1%, and the melting process comprises the following steps: 1/3-2/3 molten materials are reserved in the furnace body, substances in each component of the zirconia-corundum brick are mixed and stirred to particles with the particle size of 2-3 mm, and then the mixture is introduced to the upper end of the highest liquid level of the furnace body, and a melting device is used for: including smashing case and three-phase electric arc furnace, the upper end of smashing the case is provided with the feed inlet, and the inside upper end of smashing the case is provided with the stirring chamber, and this high anti erosion zirconia corundum brick's component and melting process and device make it have that the inner structure is fine and close, and compressive strength is big, and anti glass liquid erosion nature is strong, the characteristics that glass looks exudation volume is low to help extension glass kiln life-span, reduction glass defect, improvement glass quality.
Description
Technical Field
The invention relates to the technical field of electric melting zirconia-corundum bricks, in particular to a component of a high-erosion-resistance zirconia-corundum brick, a melting process and a melting device.
Background
The total oxygen combustion technology of the glass kiln can reduce the fuel consumption by more than 30 percent and solve the problem of emission of nitrogen oxides, so that the implementation of the total oxygen combustion technology of the glass kiln is the key of energy conservation and emission reduction in the glass industry and is also trending. The high-grade glass products also put higher demands on the reduction of glass defects. To meet the above requirements, the glass furnace main body material of the fused zirconia-corundum brick is required to have higher glass erosion resistance and lower glass phase seepage amount so as to prolong the service life of the furnace and improve the glass quality.
The zirconium dioxide content is a core index influencing the service life of the fused zirconia corundum brick, the higher the zirconium dioxide content is, the better the molten glass erosion resistance of the fused zirconia corundum brick product is, the longer the service life is, the zirconium dioxide content of the conventional fused zirconia corundum brick is generally between 30% and 43%, so the higher the zirconium dioxide content is required for improving the molten glass erosion resistance.
At high temperature, the melting tank of the glass kiln is eroded by the glass melt for a long time, so that zirconium dioxide enters the glass melt to form stones; similarly, the fused zirconia corundum material in the upper space of the glass kiln is eroded by alkali steam and dust, and the bonding viscosity of the glass phase and the alkali component in the fused zirconia corundum brick is reduced, so that the fused zirconia corundum material flows into molten glass and pollutes the molten glass. The fused zirconia corundum brick is eroded for a long time, aluminum oxide is melted, the internal structure of the brick is damaged, and zirconium dioxide is dropped into molten glass along with the molten glass phase to form stones; the silica is the main body of the glass phase, and the sodium oxide influences the viscosity of the glass phase, so if the silica content is high, the glass phase occupancy ratio is high, the sodium oxide content is high, the viscosity of the glass phase is low, the glass phase is easy to seep out at high temperature, and the glass solution is polluted.
Disclosure of Invention
The invention aims to overcome the existing defects, provides a component of a high-erosion-resistance zirconia-corundum brick, a melting process and a melting device, so that the zirconia-corundum brick has the characteristics of compact internal structure, high compressive strength, strong erosion resistance of molten glass and low glass phase seepage amount, and helps to prolong the service life of a glass kiln, reduce the defects of glass, improve the quality of the glass and effectively solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: the high erosion resistant zirconia corundum brick comprises the following components in percentage by mass: 63 to 68 percent of zirconium dioxide, 3 to 10 percent of silicon dioxide, 20 to 32 percent of aluminum oxide, 0.3 to 1 percent of sodium oxide and 0.5 to 1 percent of boron trioxide.
As a preferred technical scheme of the invention, the composite material comprises the following components in percentage by mass: 68% of zirconium dioxide, 3% of silicon dioxide, 27% of aluminum oxide, 0.3% of sodium oxide and 1% of boron trioxide.
As a preferred technical scheme of the invention, the composite material comprises the following components in percentage by mass: zirconium dioxide 65%, silicon dioxide 6%, aluminium oxide 27%, sodium oxide 0.6%, diboron trioxide 0.8%.
A melting process of high-erosion-resistance zirconia-corundum brick components comprises the steps of reserving 1/3-2/3 molten materials in a furnace body, mixing and stirring the materials in each component of the zirconia-corundum brick until the particle size is 2-3 mm, and then introducing the materials to the upper end of the highest liquid level of the furnace body.
The utility model provides a device of high anti erosion zirconium corundum brick melting technology, including smashing case and three-phase electric arc furnace, the upper end of smashing the case is provided with the feed inlet, the inside upper end of smashing the case is provided with the stirring chamber, the stirring intracavity is provided with the (mixing) shaft, the upper end of (mixing) shaft is connected with agitator motor's output, the lateral surface evenly distributed of (mixing) shaft has rotatory cutting edge, be provided with crushing roller set under the stirring chamber, the below of crushing roller set is provided with the screen cloth, one side of smashing the case is provided with the lift box, be provided with the spiral lifting shaft in the lift box, the upper end of spiral lifting shaft is connected with the output of lift motor, the lower extreme of lift box passes through the circulation discharging pipe and is connected with smashing the case, the upper end of lift box is connected with the upper end of smashing the case through the circulation inlet pipe, the lower.
As a preferable technical scheme of the invention, the inner wall of the stirring cavity is provided with a fixed cutting edge matched with the rotary cutting edge.
In a preferred embodiment of the invention, the screen is arranged obliquely, and the lower end of the screen is connected to the circulation discharge pipe.
As a preferable technical solution of the present invention, a vibration motor is provided on a lower surface of the screen.
As a preferable technical scheme of the invention, the connection part of the material guide pipe and the three-phase electric arc furnace is positioned at the upper end of the highest liquid level in the three-phase electric arc furnace.
Compared with the prior art, the invention has the beneficial effects that: the components of the high erosion resistant zirconia-corundum brick, the melting process and the melting device improve the zirconium content in the fused zirconia-corundum brick, reduce the silicon dioxide and sodium oxide content, and add boron trioxide as a fluxing agent, so that the fused zirconia-corundum brick has a compact internal structure, high compressive strength, strong erosion resistance of molten glass and low seepage amount of a glass phase, reduces erosion of the molten glass to a brick body and pollution of the molten glass caused by seepage of the glass phase, prolongs the service life of a kiln and improves the quality of the glass; simultaneously, mix the breakage with each material in the component before electric smelting in the stove, make it become granular material, carry out the circulation breakage through setting up the lift box, guarantee crushing efficiency, carry out the granule screening through setting up the screen cloth, rotatory cutting edge's setting both can stir and can carry out preliminary breakage, and crushing roller set's setting can carry out the recrushment to it, improves melting quality and efficiency.
Drawings
FIG. 1 is a schematic view of the structure of the present invention.
In the figure: 1 crushing box, 2 stirring chambers, 3 stirring shafts, 4 stirring motors, 5 rotary cutting blades, 6 fixed cutting blades, 7 crushing roller sets, 8 screens, 9 vibration motors, 10 guide pipes, 11 electric control valves, 12 three-phase electric arc furnaces, 13 lifting boxes, 14 circulating discharge pipes, 15 spiral lifting shafts, 16 lifting motors, 17 circulating feed pipes and 18 feed inlets.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments (for convenience of description and understanding, the upper side of fig. 1 is described as the upper side below). All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1: the invention provides a technical scheme that: the high erosion resistant zirconia corundum brick comprises the following components in percentage by mass: 68% of zirconium dioxide, 3% of silicon dioxide, 27% of aluminum oxide, 0.3% of sodium oxide and 1% of boron trioxide.
The compressive strength of the embodiment is more than or equal to 400MP, the erosion resistance is less than or equal to 0.5mm/24h, and the glass phase seepage amount is less than or equal to 0.5 percent.
Example 2: the invention provides a technical scheme that: the high erosion resistant zirconia corundum brick comprises the following components in percentage by mass: zirconium dioxide 65%, silicon dioxide 6%, aluminium oxide 27%, sodium oxide 0.6%, diboron trioxide 0.8%.
The compressive strength of the embodiment is more than or equal to 390MP, the erosion resistance is less than or equal to 0.6mm/24h, and the glass phase exudation is less than or equal to 0.7 percent.
Example 3: the invention provides a technical scheme that: the high erosion resistant zirconia corundum brick comprises the following components in percentage by mass: 68% of zirconium dioxide, 10% of silicon dioxide, 20% of aluminum oxide, 1% of sodium oxide and 0.5% of boron trioxide.
The compressive strength of the embodiment is more than or equal to 400MP, the erosion resistance is less than or equal to 0.6mm/24h, and the glass phase seepage amount is less than or equal to 1%.
Example 4: the invention provides a technical scheme that: the high erosion resistant zirconia corundum brick comprises the following components in percentage by mass: 63% of zirconium dioxide, 3% of silicon dioxide, 32% of aluminum oxide, 0.3% of sodium oxide and 1% of boron trioxide.
The compressive strength of the embodiment is more than or equal to 380MP, the erosion resistance is less than or equal to 0.7mm/24h, and the glass phase seepage amount is less than or equal to 0.6%.
Example 5: the invention provides a technical scheme that: the high erosion resistant zirconia corundum brick comprises the following components in percentage by mass: 63% of zirconium dioxide, 10% of silicon dioxide, 25% of aluminum oxide, 1% of sodium oxide and 0.5% of boron trioxide.
The compressive strength of the embodiment is more than or equal to 380MP, the erosion resistance is less than or equal to 0.8mm/24h, and the glass phase seepage amount is less than or equal to 1 percent.
Comparative example: the conventional zirconia-corundum brick comprises the following components in percentage by mass: 33% of zirconium dioxide, 15% of silicon dioxide, 49% of aluminum oxide and 1.5% of sodium oxide.
The compressive strength of the comparative example is more than or equal to 200MP, the erosion resistance is less than or equal to 1.6mm/24h, and the glass phase seepage amount is less than or equal to 3%.
The compressive strength of the above examples and comparative examples is room temperature compressive strength, the test condition for corrosion resistance is 36h at 1500 ℃ of common soda-lime-silica glass, and the test condition for glass phase exudation is 4h at 1500 ℃.
The following conclusions can be drawn from the comparison of examples 1 to 5 with the comparative example: the higher the content of zirconium dioxide, the stronger the glass erosion resistance of the brick, and the higher the refractoriness; the less the contents of silicon dioxide and sodium oxide are, the less the glass phase is, the stronger the erosion resistance of the brick is, the less the pollution to the glass liquid is, the more the content is, the more the glass phase is, the melting point is reduced, the erosion resistance is poor, the volume density is reduced, the more the glass phase is exuded, and the glass liquid is easily polluted; after the boron trioxide is added, the boron trioxide can be used as a fluxing agent, so that the melting degree of the fused zirconia-corundum brick is improved, and the compactness of the product is improved.
A melting process of high-erosion-resistance zirconia-corundum brick components comprises the steps of reserving 1/3-2/3 molten materials in a furnace body, mixing and stirring the materials in each component of the zirconia-corundum brick until the particle size is 2-3 mm, and then introducing the materials to the upper end of the highest liquid level of the furnace body.
Referring to fig. 1: a device for a high erosion resistance zirconia-corundum brick melting process comprises a crushing box 1 and a three-phase electric arc furnace 12, wherein a feed inlet 18 is formed in the upper end of the crushing box 1, a stirring cavity 2 is formed in the upper end inside the crushing box 1, a stirring shaft 3 is arranged in the stirring cavity 2, the upper end of the stirring shaft 3 is connected with the output end of a stirring motor 4, rotary cutting blades 5 are uniformly distributed on the outer side surface of the stirring shaft 3, fixed cutting blades 6 matched with the rotary cutting blades 5 are arranged on the inner wall of the stirring cavity 2, the crushing efficiency can be improved by arranging the rotary cutting blades 5 and the fixed cutting blades 6, a crushing roller group 7 is arranged right below the stirring cavity 2, a screen 8 is arranged below the crushing roller group 7, a lifting box 13 is arranged on one side of the crushing box 1, a spiral lifting shaft 15 is arranged in the lifting box 13, the upper end of the spiral lifting shaft 15 is connected with the output end of a lifting motor 16, the lower end, the upper end of lifting box 13 is connected with the upper end of smashing case 1 through circulation inlet pipe 14, screen cloth 8 sets up for the slope, the low-end department and the circulation discharging pipe 14 of screen cloth 8 are connected, the lower surface of screen cloth 8 is provided with vibrating motor 9, vibrating motor 9 sets up the material vibration that conveniently falls on the screen cloth 8 in circulation inlet pipe 14, the lower extreme of smashing case 1 passes through passage 10 and is connected with three-phase arc furnace 12, the lateral surface of passage 10 is provided with automatically controlled valve 11, the junction of passage 10 and three-phase arc furnace 12 is located the upper end of the highest liquid level in three-phase arc furnace 12.
When in use: feed through feed inlet 18, then open agitator motor 4, stir the material, simultaneously carry out preliminary crushing under the cooperation of rotatory cutting edge 5 and fixed cutting edge 6, the material enters into crushing roller set 7 after preliminary crushing, carry out the regrinding through crushing roller set 7, screen through screen cloth 8 behind the regrinding, through opening vibrating motor 9, shake the material that the granule is big in falling to circulation discharging pipe 14, open lifting motor 16, promote the large granule material to smash in the case 1 and carry out the circulation and smash, until the whole satisfieds of material particle diameter, the fine particle enters into three-phase electric arc furnace 12, the grog in the cooperation stove carries out the electric smelting, improve melting efficiency, and prevent that the zirconium dioxide from getting into glass liquid and forming the calculus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (9)
1. The component of the high erosion resistant zirconia-corundum brick is characterized in that: comprises the following components in percentage by mass: 63 to 68 percent of zirconium dioxide, 3 to 10 percent of silicon dioxide, 20 to 32 percent of aluminum oxide, 0.3 to 1 percent of sodium oxide and 0.5 to 1 percent of boron trioxide.
2. The composition of high erosion resistance zirconia corundum bricks according to claim 1, is characterized in that: comprises the following components in percentage by mass: 68% of zirconium dioxide, 3% of silicon dioxide, 27% of aluminum oxide, 0.3% of sodium oxide and 1% of boron trioxide.
3. The composition of high erosion resistance zirconia corundum bricks according to claim 1, is characterized in that: comprises the following components in percentage by mass: zirconium dioxide 65%, silicon dioxide 6%, aluminium oxide 27%, sodium oxide 0.6%, diboron trioxide 0.8%.
4. A process for melting the highly erosion resistant zircon corundum brick composition according to claim 1, wherein: 1/3-2/3 molten materials are reserved in the furnace body, substances in the components of the zirconia-corundum brick are mixed and smashed into particles with the particle size of 2-3 mm, and then the particles are introduced to the upper end of the highest liquid level of the furnace body.
5. The apparatus for melting zirconia corundum bricks with high erosion resistance according to claim 4, wherein: comprises a crushing box (1) and a three-phase electric arc furnace (12), wherein the upper end of the crushing box (1) is provided with a feed inlet (18), the upper end inside the crushing box (1) is provided with a stirring cavity (2), a stirring shaft (3) is arranged in the stirring cavity (2), the upper end of the stirring shaft (3) is connected with the output end of a stirring motor (4), the outer side surface of the stirring shaft (3) is uniformly distributed with rotary cutting edges (5), a crushing roller set (7) is arranged under the stirring cavity (2), a screen mesh (8) is arranged under the crushing roller set (7), one side of the crushing box (1) is provided with a lifting box (13), a spiral lifting shaft (15) is arranged in the lifting box (13), the upper end of the spiral lifting shaft (15) is connected with the output end of a lifting motor (16), the lower end of the lifting box (13) is connected with the crushing box (1) through a circulating discharge pipe (14), the upper end of the lifting box (13) is connected with the upper end of the, the lower end of the crushing box (1) is connected with a three-phase electric arc furnace (12) through a material guide pipe (10), and an electric control valve (11) is arranged on the outer side surface of the material guide pipe (10).
6. The apparatus for melting zirconia corundum bricks with high erosion resistance according to claim 5, is characterized in that: the inner wall of the stirring cavity (2) is provided with a fixed cutting edge (6) matched with the rotary cutting edge (5).
7. The apparatus for melting zirconia corundum bricks with high erosion resistance according to claim 5, is characterized in that: the screen (8) is obliquely arranged, and the lower end of the screen (8) is connected with a circulating discharge pipe (14).
8. The apparatus for melting zirconia corundum bricks with high erosion resistance according to claim 5, is characterized in that: and a vibration motor (9) is arranged on the lower surface of the screen (8).
9. The apparatus for melting zirconia corundum bricks with high erosion resistance according to claim 5, is characterized in that: the connecting part of the material guiding pipe (10) and the three-phase electric arc furnace (12) is positioned at the upper end of the highest liquid level in the three-phase electric arc furnace (12).
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| CN202110269171.4A CN113072377A (en) | 2021-03-12 | 2021-03-12 | Components of high-erosion-resistance zirconia-corundum brick, melting process and melting device |
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| CN202110269171.4A CN113072377A (en) | 2021-03-12 | 2021-03-12 | Components of high-erosion-resistance zirconia-corundum brick, melting process and melting device |
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| CN (1) | CN113072377A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114870955A (en) * | 2022-04-27 | 2022-08-09 | 鹰潭市钲旺科技有限公司 | Non-ferrous metal smelting device |
| CN115093103A (en) * | 2022-05-20 | 2022-09-23 | 彭秋云 | Electric boosting system suitable for melting high-alumina glass |
| CN115894018A (en) * | 2023-01-05 | 2023-04-04 | 郑州方铭高温陶瓷新材料有限公司 | Glass kiln material flowing nozzle brick and preparation method thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114870955A (en) * | 2022-04-27 | 2022-08-09 | 鹰潭市钲旺科技有限公司 | Non-ferrous metal smelting device |
| CN115093103A (en) * | 2022-05-20 | 2022-09-23 | 彭秋云 | Electric boosting system suitable for melting high-alumina glass |
| CN115894018A (en) * | 2023-01-05 | 2023-04-04 | 郑州方铭高温陶瓷新材料有限公司 | Glass kiln material flowing nozzle brick and preparation method thereof |
| CN115894018B (en) * | 2023-01-05 | 2023-09-22 | 郑州方铭高温陶瓷新材料有限公司 | Glass kiln material flow nozzle brick and preparation method thereof |
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Application publication date: 20210706 |