CN116924781A - High-temperature tin bath bottom brick for float glass production and preparation method thereof - Google Patents
High-temperature tin bath bottom brick for float glass production and preparation method thereof Download PDFInfo
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- CN116924781A CN116924781A CN202311019735.4A CN202311019735A CN116924781A CN 116924781 A CN116924781 A CN 116924781A CN 202311019735 A CN202311019735 A CN 202311019735A CN 116924781 A CN116924781 A CN 116924781A
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- float glass
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- bottom brick
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- 239000011449 brick Substances 0.000 title claims abstract description 68
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 65
- 239000005329 float glass Substances 0.000 title claims abstract description 48
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 title claims abstract description 40
- 238000002360 preparation method Methods 0.000 title abstract description 8
- INJRKJPEYSAMPD-UHFFFAOYSA-N aluminum;silicic acid;hydrate Chemical compound O.[Al].[Al].O[Si](O)(O)O INJRKJPEYSAMPD-UHFFFAOYSA-N 0.000 claims abstract description 30
- 229910052850 kyanite Inorganic materials 0.000 claims abstract description 30
- 239000010443 kyanite Substances 0.000 claims abstract description 30
- 239000002994 raw material Substances 0.000 claims abstract description 27
- 239000010431 corundum Substances 0.000 claims abstract description 26
- 229910052593 corundum Inorganic materials 0.000 claims abstract description 26
- 239000004576 sand Substances 0.000 claims abstract description 25
- 229910052845 zircon Inorganic materials 0.000 claims abstract description 25
- GFQYVLUOOAAOGM-UHFFFAOYSA-N zirconium(iv) silicate Chemical compound [Zr+4].[O-][Si]([O-])([O-])[O-] GFQYVLUOOAAOGM-UHFFFAOYSA-N 0.000 claims abstract description 25
- WGLPBDUCMAPZCE-UHFFFAOYSA-N Trioxochromium Chemical compound O=[Cr](=O)=O WGLPBDUCMAPZCE-UHFFFAOYSA-N 0.000 claims abstract description 23
- 229910000423 chromium oxide Inorganic materials 0.000 claims abstract description 23
- PMHQVHHXPFUNSP-UHFFFAOYSA-M copper(1+);methylsulfanylmethane;bromide Chemical compound Br[Cu].CSC PMHQVHHXPFUNSP-UHFFFAOYSA-M 0.000 claims abstract description 23
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims abstract description 23
- 229910010271 silicon carbide Inorganic materials 0.000 claims abstract description 23
- 239000007767 bonding agent Substances 0.000 claims abstract description 20
- 238000000034 method Methods 0.000 claims abstract description 10
- 239000000203 mixture Substances 0.000 claims description 39
- 238000001035 drying Methods 0.000 claims description 30
- 229910052782 aluminium Inorganic materials 0.000 claims description 20
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 20
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 20
- 239000000126 substance Substances 0.000 claims description 19
- 239000004927 clay Substances 0.000 claims description 15
- 238000003837 high-temperature calcination Methods 0.000 claims description 15
- 239000008187 granular material Substances 0.000 claims description 14
- 238000001723 curing Methods 0.000 claims description 11
- 239000002245 particle Substances 0.000 claims description 11
- 229920001353 Dextrin Polymers 0.000 claims description 10
- 239000004375 Dextrin Substances 0.000 claims description 10
- 229910004298 SiO 2 Inorganic materials 0.000 claims description 10
- 238000000498 ball milling Methods 0.000 claims description 10
- 238000001354 calcination Methods 0.000 claims description 10
- 235000019425 dextrin Nutrition 0.000 claims description 10
- 229910052708 sodium Inorganic materials 0.000 claims description 10
- 229910010413 TiO 2 Inorganic materials 0.000 claims description 5
- 238000005056 compaction Methods 0.000 claims description 5
- 239000002131 composite material Substances 0.000 claims description 5
- 238000000462 isostatic pressing Methods 0.000 claims description 5
- 238000002156 mixing Methods 0.000 claims description 5
- 238000010298 pulverizing process Methods 0.000 claims description 5
- 238000007873 sieving Methods 0.000 claims description 5
- 238000003756 stirring Methods 0.000 claims description 5
- 239000010432 diamond Substances 0.000 claims description 2
- 230000007797 corrosion Effects 0.000 abstract description 8
- 238000005260 corrosion Methods 0.000 abstract description 8
- 239000011819 refractory material Substances 0.000 abstract description 5
- 239000003513 alkali Substances 0.000 abstract description 4
- 230000002195 synergetic effect Effects 0.000 abstract description 3
- 229910010293 ceramic material Inorganic materials 0.000 abstract 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 29
- 239000011521 glass Substances 0.000 description 16
- 238000002844 melting Methods 0.000 description 14
- 230000008018 melting Effects 0.000 description 14
- 230000000052 comparative effect Effects 0.000 description 10
- 239000011734 sodium Substances 0.000 description 9
- 239000012071 phase Substances 0.000 description 5
- 238000010304 firing Methods 0.000 description 4
- 239000011230 binding agent Substances 0.000 description 3
- 238000005265 energy consumption Methods 0.000 description 3
- 239000011148 porous material Substances 0.000 description 3
- 239000000377 silicon dioxide Substances 0.000 description 3
- 229910052814 silicon oxide Inorganic materials 0.000 description 3
- 239000011029 spinel Substances 0.000 description 3
- 229910052596 spinel Inorganic materials 0.000 description 3
- 229910003564 SiAlON Inorganic materials 0.000 description 2
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 2
- KZHJGOXRZJKJNY-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Si]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O KZHJGOXRZJKJNY-UHFFFAOYSA-N 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229910052863 mullite Inorganic materials 0.000 description 2
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 description 2
- 238000011056 performance test Methods 0.000 description 2
- 238000005245 sintering Methods 0.000 description 2
- 229910001928 zirconium oxide Inorganic materials 0.000 description 2
- DJOYTAUERRJRAT-UHFFFAOYSA-N 2-(n-methyl-4-nitroanilino)acetonitrile Chemical compound N#CCN(C)C1=CC=C([N+]([O-])=O)C=C1 DJOYTAUERRJRAT-UHFFFAOYSA-N 0.000 description 1
- BHPQYMZQTOCNFJ-UHFFFAOYSA-N Calcium cation Chemical compound [Ca+2] BHPQYMZQTOCNFJ-UHFFFAOYSA-N 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 229910000272 alkali metal oxide Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 229910001424 calcium ion Inorganic materials 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000000280 densification Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 239000006066 glass batch Substances 0.000 description 1
- 230000009545 invasion Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 229910001414 potassium ion Inorganic materials 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 229910001415 sodium ion Inorganic materials 0.000 description 1
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- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/01—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
- 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
- C04B35/101—Refractories from grain sized mixtures
- C04B35/106—Refractories from grain sized mixtures containing zirconium oxide or zircon (ZrSiO4)
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- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B18/00—Shaping glass in contact with the surface of a liquid
- C03B18/02—Forming sheets
- C03B18/16—Construction of the float tank; Use of material for the float tank; Coating or protection of the tank wall
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- C04B2235/34—Non-metal oxides, non-metal mixed oxides, or salts thereof that form the non-metal oxides upon heating, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3427—Silicates other than clay, e.g. water glass
- C04B2235/3463—Alumino-silicates other than clay, e.g. mullite
- C04B2235/3472—Alkali metal alumino-silicates other than clay, e.g. spodumene, alkali feldspars such as albite or orthoclase, micas such as muscovite, zeolites such as natrolite
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Abstract
The invention belongs to the technical field of refractory materials, and particularly relates to a high-temperature tin bath bottom brick for float glass production and a preparation method thereof. The high Wen Xicao bottom brick for float glass production consists of the following raw materials: the ceramic material consists of electro-fused corundum, kyanite, zircon sand, red mud, aluminum nitride, silicon carbide, chromium oxide and a bonding agent. The high-temperature tin bath bottom brick for float glass production disclosed by the invention takes the electro-fused corundum, kyanite, zircon sand and red mud as main raw materials, aluminum nitride, silicon carbide and chromium oxide are additionally added, and the raw materials are synergistic, so that the prepared high-temperature tin bath bottom brick for float glass production has the advantages of high mechanical strength, high alkali corrosion resistance and high refractoriness. The preparation method of the high Wen Xicao bottom brick for float glass production has the advantages of simple process, easy control of parameters and stable performance of the prepared high-temperature tin bath bottom brick for float glass production.
Description
Technical Field
The invention belongs to the technical field of refractory materials, and particularly relates to a high-temperature tin bath bottom brick for float glass production and a preparation method thereof.
Background
The glass melting furnace refers to thermal equipment for melting glass batch in glass manufacturing, and is main equipment of glass production enterprises. In the production of glass, especially high-grade artistic glass, the melting temperature is required to be high (more than 1580 ℃) in the production process, and the melting temperature is often required to be changed within the range of 1530-1600 ℃ due to the special production and manufacturing process, so that the glass melting furnace, especially flame space, has higher requirements on refractory materials used in a bricking kiln, and the refractory materials in the existing melting furnace space generally adopt silica bricks, because of SiO (silicon oxide) 2 The crystal form change and the large expansion coefficient of the glass furnace, the volume change of the silica bricks is large due to the temperature change in the glass production process, the glass furnace is damaged in a short time, and the production is forced to stop, so that the production progress is influenced, and the great economic loss is caused; and more importantly, the silicon bricks fall into a melting tank after being peeled off, so that the quality of glass, especially the quality of high-grade artistic glass, is seriously affected. Therefore, the performance of the existing silica bricks can not meet the design requirement of a glass melting furnace, and the development of the industry is seriously hindered.
In addition, glass melting furnaces are large consumers of energy consumption, and in the present day when the energy consumption tends to be tension, the melting furnaces realize full heat preservation for reducing the energy consumption, and the heat dissipation of the bottom of the melting furnace tank only accounts for about 3% of the total heat dissipation of the whole furnace, but is also important. Therefore, the quality of the refractory material of the glass melting furnace is improved, so that the material can resist the effects of aggressive media and high temperature for a long time, and the prevention of defects of glass liquid is an important problem which needs to be solved at present.
Disclosure of Invention
The purpose of the invention is that: provides a high Wen Xicao bottom brick for float glass production. The molten tin bath bottom brick has the characteristics of high mechanical strength, chemical corrosion resistance and high refractoriness; the invention also provides a preparation method of the composite.
The invention relates to a high-temperature molten tin bath bottom brick for float glass production, which comprises the following raw materials in parts by weight: 78-80 parts of fused corundum, 12-14 parts of blue diamond, 18-20 parts of zircon sand, 10-13 parts of red mud, 5-6 parts of aluminum nitride, 4-5 parts of silicon carbide, 2-3 parts of chromium oxide and 11-12 parts of bonding agent.
Preferably, the high-temperature tin bath bottom brick for float glass production comprises the following raw materials in parts by weight: 79 parts of fused corundum, 13 parts of kyanite, 19 parts of zircon sand, 11 parts of red mud, 5.5 parts of aluminum nitride, 5 parts of silicon carbide, 3 parts of chromium oxide and 11.5 parts of bonding agent.
Wherein:
the bonding agent is a mixture of dextrin and clay, wherein the mass ratio of the dextrin to the clay is 1.5-1.8:0.6-0.8; the clay comprises the following chemical components in percentage by mass: al (Al) 2 O 3 43.50-43.72％、SiO 2 51.30-52.60％、Fe 2 O 3 1.21-1.35％、K 2 O 0.41-0.45％、Na 2 O 0.08-0.10％、CaO 0.24-0.28％。
The red mud comprises the following chemical components in percentage by mass: al (Al) 2 O 3 34.15-36.04％、SiO 2 14.20-14.60％、Fe 2 O 3 8.10-10.20％、Na 2 O 11.21-11.53％、CaO 14.20-14.63％、MgO 0.6-0.8％、K 2 O 2.15-2.17％、TiO 2 3.10-3.32％。
The particle size of kyanite was 250 mesh.
The invention relates to a preparation method of a high Wen Xicao bottom brick for float glass production, which comprises the following steps:
(1) Carrying out wet ball milling on fused corundum, kyanite, zircon sand and red mud by water, drying, extruding, forming, calcining at high temperature, pulverizing, and sieving to obtain three particle size grades, thus obtaining an aluminum-based mixture;
(2) Uniformly stirring and mixing the aluminum-based mixture prepared in the step (1), aluminum nitride, silicon carbide, chromium oxide, a bonding agent and water, pouring the mixture into a mold, and performing isostatic pressing to prepare a tin tank bottom brick blank;
(3) And naturally curing, drying and calcining the tin bath bottom brick blank at a high temperature to prepare the high Wen Xicao bottom brick for float glass production.
Wherein:
the mass of the added water in the step (1) accounts for 7-8% of the sum of the mass of the electro-fused corundum, the kyanite, the zircon sand and the red mud, and the wet ball milling time is 7-8 hours.
The drying temperature in the step (1) is 105-110 ℃ and the drying time is 4.5-5.5h.
The high-temperature calcination temperature in the step (1) is 1680-1700 ℃, and the high-temperature calcination time is 2.5-3h.
The aluminum-based mixture in the step (1) comprises the following raw materials in percentage by mass:
27-33% of granular material with granularity less than or equal to 3mm and less than 1mm
34-36% of granular material with granularity smaller than 0.5mm and less than or equal to 1mm
32-37% of granule with granularity less than or equal to 0.5 mm.
The mass of the water added in the step (2) accounts for 6-7% of the mass sum of the aluminum-based mixture, aluminum nitride, silicon carbide and chromium oxide.
And (3) the isostatic compaction pressure in the step (2) is 220-230MPa.
And (3) naturally curing for 48-56h at room temperature.
The drying temperature in the step (3) is 110-113 ℃, and the drying time is 3.5-4h.
The high temperature calcination in the step (3) is to heat up to 580-600 ℃ at a rate of 10 ℃/h for 5-6h, heat up to 980-1050 ℃ at a rate of 8 ℃/h for 7-8h, heat up to 1350-1380 ℃ at a rate of 6 ℃/h for 4-5h, heat up to 1400-1450 ℃ for 6-7h at a rate of 5 ℃/h, and heat up to 1580-1620 ℃ for 8-10h at a rate of 3 ℃/h.
Compared with the prior art, the invention has the following beneficial effects:
(1) According to the inventionThe high-temperature molten tin bath bottom brick for float glass production is prepared from raw materials of electro-fused corundum, kyanite, zircon sand and red mud; the fused corundum has compact structure after high-temperature sintering, and the pores of the fused corundum are in isolated form, so that the fused corundum has excellent flexural strength, compressive strength and thermal shock resistance; the addition of kyanite plays a good role in sintering, and improves the refractoriness and corrosion resistance of the brick at the bottom of the tin bath while reducing the firing shrinkage rate of the brick at the bottom of the tin bath; with the addition of zircon sand, the volume density of the tin bath bottom brick is increased, the compressive strength is improved, the introduction of zirconia at high temperature can not only promote the structural densification of the tin bath bottom brick, but also effectively inhibit the growth of mullite grains, so that the mullite network structure is changed and the strength is increased. In addition, zirconium oxide generated in the firing process of zircon sand is very inert, can effectively resist corrosion of sodium and potassium ions at the use temperature, and meanwhile, due to the introduction of the zirconium oxide, calcium ions can be absorbed to generate calcium zirconate with high melting point, so that further invasion of slag is prevented, and the alkali corrosion resistance is improved. The red mud is calcined at high temperature, and alkali metal oxide in the red mud is solidified in NaAlSiO 4 In NaAlSiO 4 The alkali dissolution can be inhibited, so that the quality of the prepared glass is ensured, in addition, the addition of the red mud further reduces the firing temperature of the bottom brick of the tin bath, and the liquid phase substance generated in the firing process further ensures the mechanical strength of the bottom brick of the tin bath.
(2) The high-temperature tin bath bottom brick for float glass production of the invention is additionally added with aluminum nitride, silicon carbide and chromium oxide, and the three substances are synergistic, and the aluminum nitride and SiO in the raw materials at high temperature 2 The SiAlON phase is generated by the reaction, and the existence of the SiAlON phase can improve the mechanical property of the bottom brick of the tin bath; the addition of silicon carbide improves the strength and chemical corrosion resistance of the molten tin bath bottom brick, and the chromium oxide has extremely strong chemical corrosion resistance and Fe in the red mud 2 O 3 And MgO and other components react to generate a composite spinel phase with higher melting point, and the composite spinel phase is filled in pores to play a role in blocking pore channels, so that the composite spinel phase has extremely strong chemical erosion resistance.
(3) The high-temperature tin bath bottom brick for float glass production disclosed by the invention takes the electro-fused corundum, kyanite, zircon sand and red mud as main raw materials, aluminum nitride, silicon carbide and chromium oxide are additionally added, and the raw materials are synergistic, so that the prepared high-temperature tin bath bottom brick for float glass production has the advantages of high mechanical strength, high alkali corrosion resistance and high refractoriness.
(4) The preparation method of the high Wen Xicao bottom brick for float glass production has the advantages of simple process, easy control of parameters and stable performance of the prepared high-temperature tin bath bottom brick for float glass production.
Detailed Description
The invention is further described below with reference to examples.
Example 1
The high-temperature molten tin bath bottom brick for float glass production described in the embodiment 1 comprises the following raw materials in parts by weight: 79 parts of fused corundum, 13 parts of kyanite, 19 parts of zircon sand, 11 parts of red mud, 5.5 parts of aluminum nitride, 5 parts of silicon carbide, 3 parts of chromium oxide and 11.5 parts of bonding agent.
Wherein:
the bonding agent is a mixture of dextrin and clay, wherein the mass ratio of the dextrin to the clay is 1.7:0.7; the clay comprises the following chemical components in percentage by mass: al (Al) 2 O 3 43.61％、SiO 2 52.00％、Fe 2 O 3 1.21％、K 2 O 0.43％、Na 2 O 0.08％、CaO 0.24％。
The red mud comprises the following chemical components in percentage by mass: al (Al) 2 O 3 35.10％、SiO 2 14.20％、Fe 2 O 3 8.10％、Na 2 O 11.21％、CaO 14.40％、MgO 0.7％、K 2 O 2.16％、TiO 2 3.10％。
The particle size of kyanite was 250 mesh.
The method for preparing the high Wen Xicao bottom brick for float glass production of the embodiment 1 comprises the following steps:
(1) Carrying out wet ball milling on fused corundum, kyanite, zircon sand and red mud by water, drying, extruding, forming, calcining at high temperature, pulverizing, and sieving to obtain three particle size grades, thus obtaining an aluminum-based mixture;
(2) Uniformly stirring and mixing the aluminum-based mixture prepared in the step (1), aluminum nitride, silicon carbide, chromium oxide, a bonding agent and water, pouring the mixture into a mold, and performing isostatic pressing to prepare a tin tank bottom brick blank;
(3) And naturally curing, drying and calcining the tin bath bottom brick blank at a high temperature to prepare the high Wen Xicao bottom brick for float glass production.
Wherein:
the mass of the added water in the step (1) accounts for 7.5 percent of the sum of the mass of the electro-fused corundum, the kyanite, the zircon sand and the red mud, and the wet ball milling time is 7.5 hours.
The drying temperature in the step (1) is 108 ℃, and the drying time is 5.0h.
The high-temperature calcination temperature in the step (1) is 1690 ℃, and the high-temperature calcination time is 2.8h.
The aluminum-based mixture in the step (1) comprises the following raw materials in percentage by mass:
30% of granule with granularity less than or equal to 3mm and 1mm
34% of granular material with granularity less than or equal to 0.5mm and granularity less than or equal to 1mm
36% of granular material with granularity less than or equal to 0.5 mm.
The mass of the water added in the step (2) accounts for 6.5 percent of the sum of the mass of the aluminum-based mixture, the aluminum nitride, the silicon carbide and the chromium oxide.
And (3) the isostatic compaction pressure in the step (2) is 225MPa.
And (3) naturally curing for 52 hours at room temperature.
The drying temperature in the step (3) is 110 ℃, and the drying time is 4 hours.
The high temperature calcination in the step (3) is to heat up to 590 ℃ at a rate of 10 ℃/h for 5.5 hours, heat up to 1015 ℃ at a rate of 8 ℃/h for 7.5 hours, heat up to 1365 ℃ at a rate of 6 ℃/h for 4.5 hours, heat up to 1425 ℃ at a rate of 5 ℃/h for 6.5 hours, and heat up to 1600 ℃ at a rate of 3 ℃/h for 10 hours.
Example 2
The high-temperature molten tin bath bottom brick for float glass production described in the embodiment 2 comprises the following raw materials in parts by weight: 78 parts of fused corundum, 14 parts of kyanite, 20 parts of zircon sand, 13 parts of red mud, 5 parts of aluminum nitride, 4 parts of silicon carbide, 2.5 parts of chromium oxide and 12 parts of bonding agent.
The bonding agent is a mixture of dextrin and clay, wherein the mass ratio of the dextrin to the clay is 1.8:0.8; the clay comprises the following chemical components in percentage by mass: al (Al) 2 O 3 43.50％、SiO 2 52.60％、Fe 2 O 3 1.28％、K 2 O 0.45％、Na 2 O 0.09％、CaO 0.26％。
The red mud comprises the following chemical components in percentage by mass: al (Al) 2 O 3 34.15％、SiO 2 14.40％、Fe 2 O 3 10.20％、Na 2 O 11.53％、CaO 14.63％、MgO 0.8％、K 2 O 2.15％、TiO 2 3.32％。
The particle size of kyanite was 250 mesh.
The method for preparing the high Wen Xicao bottom brick for float glass production of the embodiment 2 comprises the following steps:
(1) Carrying out wet ball milling on fused corundum, kyanite, zircon sand and red mud by water, drying, extruding, forming, calcining at high temperature, pulverizing, and sieving to obtain three particle size grades, thus obtaining an aluminum-based mixture;
(2) Uniformly stirring and mixing the aluminum-based mixture prepared in the step (1), aluminum nitride, silicon carbide, chromium oxide, a bonding agent and water, pouring the mixture into a mold, and performing isostatic pressing to prepare a tin tank bottom brick blank;
(3) And naturally curing, drying and calcining the tin bath bottom brick blank at a high temperature to prepare the high Wen Xicao bottom brick for float glass production.
Wherein:
the mass of the added water in the step (1) accounts for 8 percent of the sum of the mass of the electro-fused corundum, the kyanite, the zircon sand and the red mud, and the wet ball milling time is 8 hours.
The drying temperature in the step (1) is 110 ℃, and the drying time is 5.5h.
The high-temperature calcination temperature in the step (1) is 1700 ℃, and the high-temperature calcination time is 3 hours.
The aluminum-based mixture in the step (1) comprises the following raw materials in percentage by mass:
27% of granular material with granularity less than or equal to 3mm and less than 1mm
36% of granular material with granularity less than or equal to 0.5mm and granularity less than or equal to 1mm
37 percent of granular material with the granularity less than or equal to 0.5 mm.
The mass of the water added in the step (2) accounts for 7 percent of the sum of the mass of the aluminum-based mixture, the aluminum nitride, the silicon carbide and the chromium oxide.
And (3) the isostatic compaction pressure in the step (2) is 230MPa.
And (3) naturally curing for 56 hours at room temperature.
The drying temperature in the step (3) is 113 ℃, and the drying time is 3.5h.
The high temperature calcination in the step (3) is to heat up to 600 ℃ for 6 hours at the speed of 10 ℃/h, heat up to 1050 ℃ for 8 hours at the speed of 8 ℃/h, heat up to 1380 ℃ for 4 hours at the speed of 6 ℃/h, heat up to 1450 ℃ for 6 hours at the speed of 5 ℃/h, and heat up to 1620 ℃ for 10 hours at the speed of 3 ℃/h.
Example 3
The high-temperature molten tin bath bottom brick for float glass production described in the embodiment 3 comprises the following raw materials in parts by weight: 80 parts of fused corundum, 12 parts of kyanite, 18 parts of zircon sand, 10 parts of red mud, 6 parts of aluminum nitride, 4.5 parts of silicon carbide, 2 parts of chromium oxide and 11 parts of bonding agent.
The bonding agent is a mixture of dextrin and clay, wherein the mass ratio of the dextrin to the clay is 1.5:0.6; the clay comprises the following chemical components in percentage by mass: al (Al) 2 O 3 43.72％、SiO 2 51.30％、Fe 2 O 3 1.35％、K 2 O 0.41％、Na 2 O 0.10％、CaO 0.28％。
The red mud comprises the following chemical components in percentage by mass: al (Al) 2 O 3 36.04％、SiO 2 14.60％、Fe 2 O 3 9.21％、Na 2 O 11.36％、CaO 14.20％、MgO 0.6％、K 2 O 2.17％、TiO 2 3.21％。
The particle size of kyanite was 250 mesh.
The method for preparing the high Wen Xicao bottom brick for float glass production of the embodiment 3 comprises the following steps:
(1) Carrying out wet ball milling on fused corundum, kyanite, zircon sand and red mud by water, drying, extruding, forming, calcining at high temperature, pulverizing, and sieving to obtain three particle size grades, thus obtaining an aluminum-based mixture;
(2) Uniformly stirring and mixing the aluminum-based mixture prepared in the step (1), aluminum nitride, silicon carbide, chromium oxide, a bonding agent and water, pouring the mixture into a mold, and performing isostatic pressing to prepare a tin tank bottom brick blank;
(3) And naturally curing, drying and calcining the tin bath bottom brick blank at a high temperature to prepare the high Wen Xicao bottom brick for float glass production.
Wherein:
the mass of the added water in the step (1) accounts for 7 percent of the sum of the mass of the electro-fused corundum, the kyanite, the zircon sand and the red mud, and the wet ball milling time is 7 hours.
The drying temperature in the step (1) is 105 ℃ and the drying time is 4.5h.
The high-temperature calcination temperature in the step (1) is 1680 ℃, and the high-temperature calcination time is 2.5h.
The aluminum-based mixture in the step (1) comprises the following raw materials in percentage by mass:
particle material with granularity less than or equal to 3mm and 1mm accounting for 33 percent
35 percent of granular material with the granularity of more than 0.5mm and less than or equal to 1mm
32% of granular material with granularity less than or equal to 0.5 mm.
The mass of the water added in the step (2) accounts for 6 percent of the sum of the mass of the aluminum-based mixture, the aluminum nitride, the silicon carbide and the chromium oxide.
And (3) the isostatic compaction pressure in the step (2) is 220MPa.
And (3) naturally curing for 48 hours at room temperature.
The drying temperature in the step (3) is 112 ℃ and the drying time is 3.8h.
The high-temperature calcination in the step (3) is to heat up to 580 ℃ at a rate of 10 ℃/h for 5 hours, heat up to 980 ℃ at a rate of 8 ℃/h for 7 hours, heat up to 1350 ℃ at a rate of 6 ℃/h for 5 hours, heat up to 1400 ℃ at a rate of 5 ℃/h for 7 hours, and heat up to 1580 ℃ at a rate of 3 ℃/h for 8 hours.
Comparative example 1
The method for producing a high Wen Xicao bottom brick for float glass production described in this comparative example 1 was the same as in example 1, except that the raw material composition was different. The high-temperature molten tin bath bottom brick for float glass production of the comparative example 1 comprises the following raw materials in parts by weight: 79 parts of fused corundum, 13 parts of kyanite, 19 parts of zircon sand, 11 parts of red mud, 5 parts of silicon carbide, 3 parts of chromium oxide and 11.5 parts of bonding agent; the raw material composition of the binder, the chemical composition of the red mud and the parameters of kyanite are the same as in example 1.
Comparative example 2
The method for producing a high Wen Xicao bottom brick for float glass production according to comparative example 2 was the same as in example 1, except that the raw material composition was different. The high-temperature molten tin bath bottom brick for float glass production described in the comparative example 2 comprises the following raw materials in parts by weight: 79 parts of fused corundum, 13 parts of kyanite, 19 parts of zircon sand, 11 parts of red mud, 5.5 parts of aluminum nitride, 3 parts of chromium oxide and 11.5 parts of bonding agent; the raw material composition of the binder, the chemical composition of the red mud and the parameters of kyanite are the same as in example 1.
Comparative example 3
The method for producing a high Wen Xicao bottom brick for float glass production according to comparative example 3 was the same as in example 1, except that the raw material composition was different. The high-temperature molten tin bath bottom brick for float glass production described in the comparative example 3 comprises the following raw materials in parts by weight: 79 parts of fused corundum, 13 parts of kyanite, 19 parts of zircon sand, 11 parts of red mud, 5.5 parts of aluminum nitride, 5 parts of silicon carbide and 11.5 parts of bonding agent; the raw material composition of the binder, the chemical composition of the red mud and the parameters of kyanite are the same as in example 1.
The high temperature molten tin bath bottom bricks for float glass production prepared in examples 1 to 3 and comparative examples 1 to 3 were subjected to performance test, and the results are shown in table 1:
TABLE 1 Performance test results of high Wen Xicao bottom bricks for float glass production
Claims (10)
1. A high Wen Xicao bottom brick for float glass production, which is characterized in that: the composite material consists of the following raw materials in parts by weight: 78-80 parts of fused corundum, 12-14 parts of blue diamond, 18-20 parts of zircon sand, 10-13 parts of red mud, 5-6 parts of aluminum nitride, 4-5 parts of silicon carbide, 2-3 parts of chromium oxide and 11-12 parts of bonding agent.
2. A high Wen Xicao bottom tile for float glass production according to claim 1, wherein: the bonding agent is a mixture of dextrin and clay, wherein the mass ratio of the dextrin to the clay is 1.5-1.8:0.6-0.8; the clay comprises the following chemical components in percentage by mass: al (Al) 2 O 3 43.50-43.72％、SiO 2 51.30-52.60％、Fe 2 O 3 1.21-1.35％、K 2 O0.41-0.45％、Na 2 O 0.08-0.10％、CaO 0.24-0.28％。
3. A high Wen Xicao bottom tile for float glass production according to claim 1, wherein: the red mud comprises the following chemical components in percentage by mass: al (Al) 2 O 3 34.15-36.04％、SiO 2 14.20-14.60％、Fe 2 O 3 8.10-10.20％、Na 2 O 11.21-11.53％、CaO 14.20-14.63％、MgO 0.6-0.8％、K 2 O 2.15-2.17％、TiO 2 3.10-3.32％。
4. A high Wen Xicao bottom tile for float glass production according to claim 1, wherein: the particle size of kyanite was 250 mesh.
5. The method for preparing high Wen Xicao bottom bricks for float glass production according to claim 1, wherein the method comprises the steps of: the method comprises the following steps:
(1) Carrying out wet ball milling on fused corundum, kyanite, zircon sand and red mud by water, drying, extruding, forming, calcining at high temperature, pulverizing, and sieving to obtain three particle size grades, thus obtaining an aluminum-based mixture;
(2) Uniformly stirring and mixing the aluminum-based mixture prepared in the step (1), aluminum nitride, silicon carbide, chromium oxide, a bonding agent and water, pouring the mixture into a mold, and performing isostatic pressing to prepare a tin tank bottom brick blank;
(3) And naturally curing, drying and calcining the tin bath bottom brick blank at a high temperature to prepare the high Wen Xicao bottom brick for float glass production.
6. The method for producing high Wen Xicao bottom bricks for float glass production according to claim 5, wherein: the drying temperature in the step (1) is 105-110 ℃ and the drying time is 4.5-5.5h;
the high-temperature calcination temperature in the step (1) is 1680-1700 ℃, and the high-temperature calcination time is 2.5-3h;
the mass of the added water in the step (1) accounts for 7-8% of the sum of the mass of the electro-fused corundum, the kyanite, the zircon sand and the red mud, and the wet ball milling time is 7-8 hours.
7. The method for producing high Wen Xicao bottom bricks for float glass production according to claim 5, wherein: the aluminum-based mixture in the step (1) comprises the following raw materials in percentage by mass:
27-33% of granular material with granularity less than or equal to 3mm and less than 1mm
34-36% of granular material with granularity smaller than 0.5mm and less than or equal to 1mm
32-37% of granule with granularity less than or equal to 0.5 mm.
8. The method for producing high Wen Xicao bottom bricks for float glass production according to claim 5, wherein: the mass of the added water in the step (2) accounts for 6-7% of the sum of the mass of the aluminum-based mixture, aluminum nitride, silicon carbide and chromium oxide;
and (3) the isostatic compaction pressure in the step (2) is 220-230MPa.
9. The method for producing high Wen Xicao bottom bricks for float glass production according to claim 5, wherein: the natural curing in the step (3) is natural curing for 48-56 hours at room temperature;
the drying temperature in the step (3) is 110-113 ℃, and the drying time is 3.5-4h.
10. The method for producing high Wen Xicao bottom bricks for float glass production according to claim 5, wherein: the high temperature calcination in the step (3) is to heat up to 580-600 ℃ at a rate of 10 ℃/h for 5-6h, heat up to 980-1050 ℃ at a rate of 8 ℃/h for 7-8h, heat up to 1350-1380 ℃ at a rate of 6 ℃/h for 4-5h, heat up to 1400-1450 ℃ for 6-7h at a rate of 5 ℃/h, and heat up to 1580-1620 ℃ for 8-10h at a rate of 3 ℃/h.
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