CN112358287A - One-step formed glaze-fired integral ascending pipe and preparation method thereof - Google Patents
One-step formed glaze-fired integral ascending pipe and preparation method thereof Download PDFInfo
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- CN112358287A CN112358287A CN202011245901.9A CN202011245901A CN112358287A CN 112358287 A CN112358287 A CN 112358287A CN 202011245901 A CN202011245901 A CN 202011245901A CN 112358287 A CN112358287 A CN 112358287A
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- riser
- glaze
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- ascending pipe
- main body
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- 230000001174 ascending effect Effects 0.000 title claims abstract description 51
- 238000002360 preparation method Methods 0.000 title abstract description 7
- 239000002002 slurry Substances 0.000 claims abstract description 55
- 238000000034 method Methods 0.000 claims abstract description 14
- 239000000843 powder Substances 0.000 claims description 24
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 18
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 17
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims description 16
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 claims description 16
- 239000002994 raw material Substances 0.000 claims description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 11
- 229910001868 water Inorganic materials 0.000 claims description 11
- 239000004568 cement Substances 0.000 claims description 10
- 238000010304 firing Methods 0.000 claims description 10
- 150000004645 aluminates Chemical class 0.000 claims description 9
- 229910052878 cordierite Inorganic materials 0.000 claims description 9
- JSKIRARMQDRGJZ-UHFFFAOYSA-N dimagnesium dioxido-bis[(1-oxido-3-oxo-2,4,6,8,9-pentaoxa-1,3-disila-5,7-dialuminabicyclo[3.3.1]nonan-7-yl)oxy]silane Chemical compound [Mg++].[Mg++].[O-][Si]([O-])(O[Al]1O[Al]2O[Si](=O)O[Si]([O-])(O1)O2)O[Al]1O[Al]2O[Si](=O)O[Si]([O-])(O1)O2 JSKIRARMQDRGJZ-UHFFFAOYSA-N 0.000 claims description 9
- CNLWCVNCHLKFHK-UHFFFAOYSA-N aluminum;lithium;dioxido(oxo)silane Chemical compound [Li+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O CNLWCVNCHLKFHK-UHFFFAOYSA-N 0.000 claims description 8
- 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 claims description 8
- FPAFDBFIGPHWGO-UHFFFAOYSA-N dioxosilane;oxomagnesium;hydrate Chemical compound O.[Mg]=O.[Mg]=O.[Mg]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O FPAFDBFIGPHWGO-UHFFFAOYSA-N 0.000 claims description 8
- 239000005350 fused silica glass Substances 0.000 claims description 8
- 229910052863 mullite Inorganic materials 0.000 claims description 8
- 229910021487 silica fume Inorganic materials 0.000 claims description 8
- 229910052642 spodumene Inorganic materials 0.000 claims description 8
- 239000011787 zinc oxide Substances 0.000 claims description 8
- 238000000498 ball milling Methods 0.000 claims description 6
- 238000005245 sintering Methods 0.000 claims description 6
- 238000005507 spraying Methods 0.000 claims description 6
- 239000011248 coating agent Substances 0.000 claims description 5
- 238000000576 coating method Methods 0.000 claims description 5
- 239000003795 chemical substances by application Substances 0.000 claims description 4
- 239000010433 feldspar Substances 0.000 claims description 4
- 230000010354 integration Effects 0.000 claims description 4
- 238000007493 shaping process Methods 0.000 claims description 4
- IPCXNCATNBAPKW-UHFFFAOYSA-N zinc;hydrate Chemical compound O.[Zn] IPCXNCATNBAPKW-UHFFFAOYSA-N 0.000 claims description 4
- 238000001035 drying Methods 0.000 claims description 3
- 239000012530 fluid Substances 0.000 claims description 3
- 238000000227 grinding Methods 0.000 claims description 3
- 210000001161 mammalian embryo Anatomy 0.000 claims description 3
- 230000001590 oxidative effect Effects 0.000 claims description 3
- 238000003756 stirring Methods 0.000 claims description 3
- 238000005303 weighing Methods 0.000 claims description 3
- 238000007581 slurry coating method Methods 0.000 claims description 2
- 210000003298 dental enamel Anatomy 0.000 claims 1
- 238000007789 sealing Methods 0.000 abstract description 6
- 239000010881 fly ash Substances 0.000 abstract description 4
- 239000002244 precipitate Substances 0.000 abstract description 4
- 238000004140 cleaning Methods 0.000 abstract description 2
- 239000011449 brick Substances 0.000 description 12
- 239000000571 coke Substances 0.000 description 11
- 239000007789 gas Substances 0.000 description 8
- 239000000463 material Substances 0.000 description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 4
- 229910052799 carbon Inorganic materials 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000004939 coking Methods 0.000 description 3
- 239000011521 glass Substances 0.000 description 3
- 238000000465 moulding Methods 0.000 description 3
- 230000035699 permeability Effects 0.000 description 3
- 239000011148 porous material Substances 0.000 description 3
- 230000001737 promoting effect Effects 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 239000002918 waste heat Substances 0.000 description 2
- 238000003723 Smelting Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000010883 coal ash Substances 0.000 description 1
- 239000003034 coal gas Substances 0.000 description 1
- 229910052681 coesite Inorganic materials 0.000 description 1
- 229910052593 corundum Inorganic materials 0.000 description 1
- 229910052906 cristobalite Inorganic materials 0.000 description 1
- 238000005235 decoking Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000006703 hydration reaction Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000011819 refractory material Substances 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 229910052682 stishovite Inorganic materials 0.000 description 1
- 229910052905 tridymite Inorganic materials 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 229910001845 yogo sapphire 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
- C04B35/16—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 silicates other than clay
- C04B35/18—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 silicates other than clay rich in aluminium oxide
- C04B35/195—Alkaline earth aluminosilicates, e.g. cordierite or anorthite
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- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C8/00—Enamels; Glazes; Fusion seal compositions being frit compositions having non-frit additions
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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
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- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
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Abstract
The invention relates to an integrally formed glazed integral riser, which comprises a riser body and glaze slurry coated on the inner wall of the riser body, wherein the riser body is a combination of a plurality of sections of riser main bodies, each riser main body comprises a riser, a connecting part at one end of the riser and a joint part at the other end of the riser, the joint part can be matched with the connecting part, the connecting part is an annular bulge arranged on the circumferential end surface of one end of the riser, and a groove matched with the annular bulge is arranged on the circumferential end surface of the other end of the riser corresponding to the joint part. The invention also discloses components of the ascending pipe main body and a preparation method thereof. By adopting the design scheme of the invention, the total sealing performance is greatly improved in the using process, and meanwhile, the smooth glaze surface ensures that precipitates such as fly ash in the raw gas cannot be well attached to the pipe wall, thereby greatly reducing the difficulty in cleaning a channel in the later period.
Description
Technical Field
The invention belongs to the technical field of refractory materials, and particularly relates to an integral riser for one-step molding and glaze firing and a preparation method thereof.
Background
The coke oven provides important coke and coal gas for the smelting industry, is an indispensable auxiliary device, has small thermal expansion coefficient and relatively high strength of the cordierite lining brick of the oven door, is used at 1300 ℃ without decomposition and conversion, and adapts to the use requirement of the oven door of the coke oven.
The tightness of the coke oven body of the coke oven plant directly influences the thermal regulation accuracy of the coke oven, and especially the heat waste of the coke oven crude gas is avoided; at present, a plurality of raw gas waste heat utilization modes are developed, but the problem that the inner wall of the ascending pipe is coked due to tar is solved, and great trouble is caused to the waste heat utilization of the raw gas. The removal of the coking layer accelerates the damage of the brick body, reduces the service life and increases the workload. The glaze is widely applied as a functional material, and has the main characteristics of high compactness, strong permeation resistance and corrosion resistance, a carbon formation layer can be prevented from being formed in the work, and meanwhile, the glaze layer with high compactness can reduce the corrosion of harmful gas to a brick body.
The traditional ascending pipe brick adopts a round pipe column combined by a plurality of curved brick bodies, and the design has the defects that a plurality of connecting gaps are formed, and the sealing performance cannot be guaranteed.
Disclosure of Invention
The purpose of the invention is as follows: the invention aims to solve the problem that the upper body pipe for the existing coke oven adopts a round pipe column combined by a plurality of curved bricks, and has poor sealing performance.
The technical scheme is as follows: in order to achieve the purpose, the invention provides the following technical scheme:
the utility model provides an integral tedge of one shot forming glaze firing, includes the glazed slurry body of tedge body and coating at the tedge body inner wall, the tedge body is the combination of multistage tedge main part, and every section tedge main part is integration shaping, its characterized in that: the main body of the riser is prepared from cordierite, mullite, alumina, quartz glass, silica fume and aluminate cement, and the glaze slurry is prepared from spodumene powder, talcum powder, fused quartz powder, alpha-alumina powder, zirconia, zinc oxide and water.
The utility model provides a riser, adopt one shot forming's mode, directly make the pipe form, make build by laying bricks or stones between the completion back riser main part seamless, inside spraying glaze simultaneously, and burn and get smooth compact glaze, make this riser obtain greatly promoting at the total sealing performance of use, simultaneously glossy glaze makes precipitates such as fly ash in the raw coke oven gas can not adhere to on the pipe wall well, the passageway clearance to the later stage has reduced greatly the degree of difficulty, it needs the number of times of clearance to be corresponding also to have reduced, thereby prolong its continuous operating time, the productivity effect has been improved.
By adding the design of the aluminate cement, the material can have higher basic strength for the hydration reaction of the cement in a very short (about 1-2h) time after being made into a blank body, and the subsequent production operation is convenient.
Furthermore, each ascending pipe main body comprises an ascending pipe, a connecting part at one end of the ascending pipe and a joint part, wherein the other end of the ascending pipe can be matched with the connecting part, the connecting part is an annular bulge arranged on the circumferential end face of one end of the ascending pipe, and a groove matched with the annular bulge is formed in the circumferential end face of the other end of the ascending pipe corresponding to the joint part.
The connection is realized in a groove embedding mode, so that the air tightness is improved.
Further, the ascending tube main body comprises 30-45 parts by weight of cordierite, 30-45 parts by weight of mullite, 10-15 parts by weight of alumina, 20-35 parts by weight of quartz glass, 3-5 parts by weight of silica fume and 5-7 parts by weight of aluminate cement, and the glaze slurry comprises 45-60 parts by weight of spodumene powder, 10-15 parts by weight of talcum powder, 10-15 parts by weight of fused quartz powder, 8-15 parts by weight of alpha-alumina powder, 5-15 parts by weight of zirconia, 5-10 parts by weight of zinc oxide and 50-70 parts by weight of water.
The glaze slurry has strong anti-penetration capability, the material forms a glass state when being fired, has certain fluidity and is tightly combined with the inner wall surface of the main body of the ascending tube, and the flowing makes the pores of the glaze slurry and the gaps among the components of the main body of the ascending tube filled, so that the glaze slurry has good compactness, the air permeability is greatly reduced, and the glaze slurry can resist the damage caused by carbon and harmful substances entering the furnace door brick body in the working process.
Furthermore, feldspar serving as a fluxing agent is also added into the glaze slurry.
A preparation method of an integral riser pipe formed by one-step molding and glaze firing comprises the following steps:
1) calculating the required weight of each raw material according to the proportion requirement of the formula, and accurately weighing the main raw material of the riser and the glaze slurry raw material;
2) preparing a riser main body, adding the prepared raw materials into a stirrer, adding 6% of water, and stirring for 5-8 minutes to prepare riser main body slurry;
3) putting the stirred slurry of the main body of the riser into a prepared mould, starting vibration in the putting process until no obvious bubbles and bulges on the surface, standing, curing for 12-14 hours with the mould, removing the grinding tool, and taking out a blank;
4) drying the embryo body at 80-100 ℃ for 12 h;
5) preparing glaze slurry, adding the prepared raw materials into a ball milling cylinder, and carrying out ball milling for 24 hours to prepare the glaze slurry;
6) uniformly spraying glaze slurry on the inner side of the ascending pipe main body by using a tool, and standing for 12 hours;
7) placing the dried ascending pipe main body into a kiln, and sintering in an oxidizing atmosphere at the sintering temperature of 1250-1320 ℃;
8) and combining the fired riser body through the joint part and the connecting part to form the riser body coated with the finished glaze slurry.
Further, in the step 6), the thickness of the coating of the glaze slurry is 1.2-1.5 mm.
Further, in the step 7), the glaze slurry forms a vitreous fluid glaze at a high temperature, and fills gaps between the components constituting the riser pipe body.
Has the advantages that: compared with the prior art, the invention has the following positive effects:
1) the one-step formed glaze-fired integral riser has the characteristics of good permeation resistance, excellent thermal shock resistance and high use temperature, the design of pipe body connection has the effect of improving the integral air tightness, and glaze sprayed on the surface of the riser can be stably attached to the surface of the inner wall of the riser after being fired, and cannot crack or peel off in the long-term use process.
2) The ascending pipe is sintered at 1250 ℃, so that the ascending pipe is stable when working at the temperature of crude gas in the ascending pipe.
3) The addition of the glaze surface makes the coking coal ash difficult to attach to the inner wall, and the cleaning and coking are simple, so that the service life of the ascending pipe is prolonged, the decoking times are reduced, and the economic benefit is improved.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Detailed Description
The invention is further described with reference to specific embodiments, without limiting its scope.
Example 1
The utility model provides an integral tedge of one shot forming glaze firing, includes the glazed slurry body of tedge body and coating at the tedge body inner wall, the tedge body is the combination of multistage tedge main part, and every section tedge main part is integration shaping, its characterized in that: the main body of the riser is prepared from cordierite, mullite, alumina, quartz glass, silica fume and aluminate cement, and the glaze slurry is prepared from spodumene powder, talcum powder, fused quartz powder, alpha-alumina powder, zirconia, zinc oxide and water.
The utility model provides a riser, adopt one shot forming's mode, directly make the pipe form, make build by laying bricks or stones between the completion back riser main part seamless, inside spraying glaze simultaneously, and burn and get smooth compact glaze, make this riser obtain greatly promoting at the total sealing performance of use, simultaneously glossy glaze makes precipitates such as fly ash in the raw coke oven gas can not adhere to on the pipe wall well, the passageway clearance to the later stage has reduced greatly the degree of difficulty, it needs the number of times of clearance to be corresponding also to have reduced, thereby prolong its continuous operating time, the productivity effect has been improved.
Each ascending pipe main body comprises an ascending pipe, a connecting part at one end of the ascending pipe and a joint part, wherein the other end of the ascending pipe can be matched with the connecting part, the connecting part is an annular bulge 1 arranged on the circumferential end face of one end of the ascending pipe, and a groove 2 matched with the annular bulge 1 is formed in the circumferential end face of the other end of the ascending pipe corresponding to the joint part.
The connection is realized in a groove embedding mode, so that the air tightness is improved.
The riser main body is prepared from 45 parts of cordierite, 45 parts of mullite, 15 parts of alumina, 35 parts of quartz glass, 5 parts of silica fume and 7 parts of aluminate cement in parts by weight, and glaze slurry comprises 60 parts of spodumene powder, 15 parts of talcum powder, 15 parts of fused quartz powder, 15 parts of alpha-alumina powder, 15 parts of zirconia, 10 parts of zinc oxide and 70 parts of water in parts by weight.
The glaze slurry has strong anti-penetration capability, the material forms a glass state when being fired, has certain fluidity and is tightly combined with the inner wall surface of the main body of the ascending tube, and the flowing makes the pores of the glaze slurry and the gaps among the components of the main body of the ascending tube filled, so that the glaze slurry has good compactness, the air permeability is greatly reduced, and the glaze slurry can resist the damage caused by carbon and harmful substances entering the furnace door brick body in the working process.
Feldspar is also added into the glaze slurry to be used as a fluxing agent.
Example 2
The utility model provides an integral tedge of one shot forming glaze firing, includes the glazed slurry body of tedge body and coating at the tedge body inner wall, the tedge body is the combination of multistage tedge main part, and every section tedge main part is integration shaping, its characterized in that: the main body of the riser is prepared from cordierite, mullite, alumina, quartz glass, silica fume and aluminate cement, and the glaze slurry is prepared from spodumene powder, talcum powder, fused quartz powder, alpha-alumina powder, zirconia, zinc oxide and water.
The utility model provides a riser, adopt one shot forming's mode, directly make the pipe form, make build by laying bricks or stones between the completion back riser main part seamless, inside spraying glaze simultaneously, and burn and get smooth compact glaze, make this riser obtain greatly promoting at the total sealing performance of use, simultaneously glossy glaze makes precipitates such as fly ash in the raw coke oven gas can not adhere to on the pipe wall well, the passageway clearance to the later stage has reduced greatly the degree of difficulty, it needs the number of times of clearance to be corresponding also to have reduced, thereby prolong its continuous operating time, the productivity effect has been improved.
Each ascending pipe main body comprises an ascending pipe, a connecting part at one end of the ascending pipe and a joint part, wherein the other end of the ascending pipe can be matched with the connecting part, the connecting part is an annular bulge 1 arranged on the circumferential end face of one end of the ascending pipe, and a groove 2 matched with the annular bulge 1 is formed in the circumferential end face of the other end of the ascending pipe corresponding to the joint part.
The connection is realized in a groove embedding mode, so that the air tightness is improved.
The riser main body is prepared from 30 parts by weight of cordierite, 30 parts by weight of mullite, 10 parts by weight of alumina, 20 parts by weight of quartz glass, 3 parts by weight of silica fume and 5 parts by weight of aluminate cement, wherein the glaze slurry comprises 45 parts by weight of spodumene powder, 10 parts by weight of talcum powder, 10 parts by weight of fused quartz powder, 8 parts by weight of alpha-alumina powder, 5 parts by weight of zirconia, 5 parts by weight of zinc oxide and 50 parts by weight of water.
The glaze slurry has strong anti-penetration capability, the material forms a glass state when being fired, has certain fluidity and is tightly combined with the inner wall surface of the main body of the ascending tube, and the flowing makes the pores of the glaze slurry and the gaps among the components of the main body of the ascending tube filled, so that the glaze slurry has good compactness, the air permeability is greatly reduced, and the glaze slurry can resist the damage caused by carbon and harmful substances entering the furnace door brick body in the working process.
Feldspar is also added into the glaze slurry to be used as a fluxing agent.
Example 3
A preparation method of an integral riser pipe formed by one-step molding and glaze firing comprises the following steps:
1) calculating the required weight of each raw material according to the proportion requirement of the formula, and accurately weighing the main raw material of the riser and the glaze slurry raw material;
2) preparing a riser main body, adding the prepared raw materials into a stirrer, adding 6% of water, and stirring for 5-8 minutes to prepare riser main body slurry;
3) putting the stirred slurry of the main body of the riser into a prepared mould, starting vibration in the putting process until no obvious bubbles and bulges on the surface, standing, curing for 12-14 hours with the mould, removing the grinding tool, and taking out a blank;
4) drying the embryo body at 80-100 ℃ for 12 h;
5) preparing glaze slurry, adding the prepared raw materials into a ball milling cylinder, and carrying out ball milling for 24 hours to prepare the glaze slurry;
6) uniformly spraying glaze slurry on the inner side of the ascending pipe main body by using a tool, and standing for 12 hours;
7) placing the dried ascending pipe main body into a kiln, and sintering in an oxidizing atmosphere at the sintering temperature of 1250-1320 ℃;
8) and combining the fired riser body through the joint part and the connecting part to form the riser body coated with the finished glaze slurry.
In the step 6), the thickness of the glaze slurry coating is 1.2-1.5 mm.
In step 7), the glaze slurry forms a glassy state fluid glaze at high temperature, and gaps among the components forming the main body of the ascending pipe are filled.
By adopting the preparation process and the components, the technical indexes of the finally prepared ascending pipe body are as follows:
| item | Index (I) |
| Al2O3(％) | ≥40 |
| SiO2(％) | ≥20 |
| Compressive strength Mpa | ≥85 |
| Bulk density g/cm3 | ≥2.3 |
| Average coefficient of thermal expansion of 20 to 1000 DEG C | 2.8×10-6 |
| Refractoriness, DEG C | ≥1500 |
| Coefficient of thermal conductivity w/m.K | 0.7-0.92 |
Claims (7)
1. The utility model provides an integral tedge of one shot forming glaze firing, includes the glazed slurry body of tedge body and coating at the tedge body inner wall, the tedge body is the combination of multistage tedge main part, and every section tedge main part is integration shaping, its characterized in that: the main body of the riser is prepared from cordierite, mullite, alumina, quartz glass, silica fume and aluminate cement, and the glaze slurry is prepared from spodumene powder, talcum powder, fused quartz powder, alpha-alumina powder, zirconia, zinc oxide and water.
2. The one-shot glaze-fired integral riser as recited in claim 1, wherein: each ascending pipe main body comprises an ascending pipe, a connecting part at one end of the ascending pipe and a joint part, wherein the other end of the ascending pipe can be matched with the connecting part, the connecting part is an annular bulge arranged on the circumferential end face of one end of the ascending pipe, and a groove matched with the annular bulge is formed in the circumferential end face of the other end of the ascending pipe corresponding to the joint part.
3. The one-shot glaze-fired integral riser as recited in claim 1, wherein: the riser comprises a riser main body and glaze slurry, wherein the riser main body comprises, by weight, 30-45 parts of cordierite, 30-45 parts of mullite, 10-15 parts of alumina, 20-35 parts of quartz glass, 3-5 parts of silica fume and 5-7 parts of aluminate cement, and the glaze slurry comprises, by weight, 45-60 parts of spodumene powder, 10-15 parts of talcum powder, 10-15 parts of fused quartz powder, 8-15 parts of alpha-alumina powder, 5-15 parts of zirconia, 5-10 parts of zinc oxide and 50-70 parts of water.
4. The one-shot glaze-fired integral riser pipe as set forth in claim 3, wherein: feldspar is also added into the glaze slurry to serve as a fluxing agent.
5. A method for preparing an integral riser pipe for one-shot forming and firing enamel as claimed in claim 1, wherein: the method comprises the following steps:
1) calculating the required weight of each raw material according to the proportion requirement of the formula, and accurately weighing the main raw material of the riser and the glaze slurry raw material;
2) preparing a riser main body, adding the prepared raw materials into a stirrer, adding 6% of water, and stirring for 5-8 minutes to prepare riser main body slurry;
3) putting the stirred slurry of the main body of the riser into a prepared mould, starting vibration in the putting process until no obvious bubbles and bulges on the surface, standing, curing for 12-14 hours with the mould, removing the grinding tool, and taking out a blank;
4) drying the embryo body at 80-100 ℃ for 12 h;
5) preparing glaze slurry, adding the prepared raw materials into a ball milling cylinder, and carrying out ball milling for 24 hours to prepare the glaze slurry;
6) uniformly spraying glaze slurry on the inner side of the ascending pipe main body by using a tool, and standing for 12 hours;
7) placing the dried ascending pipe main body into a kiln, and sintering in an oxidizing atmosphere at the sintering temperature of 1250-1320 ℃;
8) and combining the fired riser body through the joint part and the connecting part to form the riser body coated with the finished glaze slurry.
6. The method for preparing the one-step glaze firing integral ascending pipe according to claim 5, wherein the method comprises the following steps: in the step 6), the thickness of the glaze slurry coating is 1.2-1.5 mm.
7. The method for preparing the one-step glaze firing integral ascending pipe according to claim 5, wherein the method comprises the following steps: in the step 7), the glaze slurry forms a glass-state fluid glaze at high temperature, and gaps among the components forming the main body of the ascending pipe are filled.
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| CN212800231U (en) * | 2020-07-16 | 2021-03-26 | 中钢洛耐科技股份有限公司 | High-strength heat-intercepting brick for heat recovery coke oven ascending pipe base and base combined brick |
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| JPS55131086A (en) * | 1979-03-31 | 1980-10-11 | Nippon Steel Corp | Coke oven |
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Application publication date: 20210212 |