CN110483065A - A kind of glazed tile method for cooking and the corresponding roller kilns used - Google Patents
A kind of glazed tile method for cooking and the corresponding roller kilns used Download PDFInfo
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- CN110483065A CN110483065A CN201910769751.2A CN201910769751A CN110483065A CN 110483065 A CN110483065 A CN 110483065A CN 201910769751 A CN201910769751 A CN 201910769751A CN 110483065 A CN110483065 A CN 110483065A
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- Prior art keywords
- water
- firing
- glazed tile
- reducing atmosphere
- roller
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/64—Burning or sintering processes
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
- F27B9/04—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity adapted for treating the charge in vacuum or special atmosphere
- F27B9/045—Furnaces with controlled atmosphere
- F27B9/047—Furnaces with controlled atmosphere the atmosphere consisting of protective gases
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
- F27B9/12—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity with special arrangements for preheating or cooling the charge
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
- F27B9/30—Details, accessories, or equipment peculiar to furnaces of these types
- F27B9/3005—Details, accessories, or equipment peculiar to furnaces of these types arrangements for circulating gases
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/65—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes
- C04B2235/658—Atmosphere during thermal treatment
- C04B2235/6583—Oxygen containing atmosphere, e.g. with changing oxygen pressures
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
- F27B9/12—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity with special arrangements for preheating or cooling the charge
- F27B2009/122—Preheating
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
- F27B9/12—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity with special arrangements for preheating or cooling the charge
- F27B2009/124—Cooling
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Ceramic Engineering (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Finishing Walls (AREA)
Abstract
The invention discloses a kind of method for cooking of glazed tile, by by glazed tile in the case where the firing stage be in reducing atmosphere so that the iron ion in glaze is with the valence state presence of divalent, to avoid the occurrence of because of ferric iron bring yellow or yellowish-brown.When proceeding to the firing stage, the oxidation of green body and glaze has been completed for the firing of glazed tile, and oxidation atmosphere is converted to reduction atmosphere at this time, then can then be made in glass phase by the ferric iron back in glaze at ferrous iron containing green.Slight green seems sparkling and crystal-clear, and glaze is enabled to seem with the texture close to jade.Reducing atmosphere is to spray water mist by the endpiece of the firing section of kiln to be formed.A part of water mist decomposes production oxygen and hydrogen because of high fever in ejection moment；Another part water becomes vapor at high temperature, so that the oxygen content in the reducing atmosphere region reduces, water-gas is enabled to can not be completely oxidized into carbon dioxide and can only be oxidized to carbon monoxide.
Description
Technical field
The present invention relates to ceramic technology field more particularly to a kind of method for cooking of glazed tile, and correspond to and use the burning
The roller kilns of method processed.
Background technique
Popular tile product is glazed tile currently on the market.Glazed tile sintering process needs a large amount of oxygen to participate in, pre-
In hot stage and glaze melt stage, oxidizing atmosphere is all conducive to the organic matter in green body and glaze and quickly aoxidizes, burns mistake.If lacking
Weary oxidizing atmosphere, it is likely that lead to number of drawbacks: organic substance residues occur sandwich in green body, influence the performance of glazed tile；
Organic matter in glaze is just oxidized in the glaze melting later period, and glaze is caused pin hole or pinhole etc. occur.But in oxidizing atmosphere
Under, iron ion if it exists in glaze can then exist with ferric state, so that being in yellow or yellowish-brown in glass phase.Therefore,
It needs first to carry out except iron glaze when the prior art will be burnt into partially green glazed tile, avoids it from generating yellow or yellowish-brown variegated.
Summary of the invention
For being needed in the prior art in advance to glaze except iron is just avoided that glazed tile surface generation yellow or yellowish-brown
Deficiency, the present invention provides a kind of method for cooking of glazed tile.Glazed tile can be made in the firing stage by this method for cooking
End is under reducing atmosphere, so that the iron ion in glaze exists with the valence state of divalent, to avoid the occurrence of because of ferric iron band
The yellow or yellowish-brown come.
A kind of glazed tile method for cooking, comprising the following steps:
1) base: by powder pressing at green compact, dry body is obtained after green compact are dry；2) it glazing: polishes dry body surface
Processing, it is 60 DEG C~80 DEG C that base face temperature is controlled after cleaning, then carries out glazing and stamp；3) it is burnt into: after applying glaze
Roller kilns are sent into adobe, and successively by preheating section, oxidation panel, firing section and cooling section, the firing section includes being located at leading portion
Be sintered region and the reducing atmosphere region positioned at endpiece, the reducing atmosphere region formed containing hydrogen by being passed through water mist and
The reducing atmosphere of carbon monoxide；4) to the Ceramic Tiles after firing, edging, polishing treatment is carried out, finished product is obtained.
Wherein, dry body moisture content described in step 1 is 0.3~0.8%.The drying of appropriateness facilitates green body and polished subsequent
Go out unhairing angle in journey, drape over one's shoulders side etc..Clean process described in step 2 includes blowing off base face with blower, then sprays proper amount of clear water.Weight
New sprinkling proper amount of clear water is so that subsequent glazing, stamp process is not easy pressure break adobe to keep adobe humidity.Water mist described in step 3
Intake be 30~100mL/min；And the temperature in the sintering region is 1100~1250 DEG C.Suitable water was both avoided that
Temperature shock in region also can guarantee that it smoothly decomposes output hydrogen, form reducing atmosphere.
The present invention also discloses a kind of roller kilns, including firing chamber, roller-way is equipped in the firing chamber, the firing chamber is along roller
The conveying direction in road is divided into preheating section, oxidation panel, firing section and cooling section, and the firing section is by being sintered region, the area Rong Ping
Domain and reducing atmosphere region form, and water-mist outlet are equipped in the reducing atmosphere region, the water-mist outlet is by pipeline and outside
If water source connection.
Preferably, the water-mist outlet is made of the drilling of high temperature resistant tubing, and the high temperature resistant tubing is located above roller-way,
The hole face roller table surface.The aperture in the hole is 0.1~0.4mm, between two neighboring hole between be divided into 1~4cm.Water exists
Pressure in the high temperature resistant tubing is 0.2~0.8MPa.The water yield of the water-mist outlet is 30~120mL/min.Due to
Water mist amount in actual production process is less, therefore only can guarantee that water-mist outlet near zone is in reducing atmosphere, therefore by water
Mist outlet face roller table surface can guarantee that brick body can be by the encirclement of reducing atmosphere.
When proceeding to the firing stage, the oxidation of green body and glaze has been completed for the firing of glazed tile, at this time by oxidizing atmosphere
It encloses and is converted to reduction atmosphere, then can then make in glass phase by the ferric iron back in glaze at ferrous iron containing green.Slightly
Green seem sparkling and crystal-clear, enable glaze seem with close to beautiful texture.Reducing atmosphere is the endpiece by the firing section of kiln
Spray what water mist was formed.A part of water mist decomposes production oxygen and hydrogen because of high fever in ejection moment；Another part water exists
Become vapor under high temperature, so that the oxygen content in the reducing atmosphere region reduces, water-gas is enabled to can not be completely oxidized into
Carbon dioxide and carbon monoxide can only be oxidized to.
Since water-mist outlet is located at roller kiln burning into the endpiece of section, so only forming the reducing atmosphere of part, Bu Huizeng
Add the gas supply of roller kilns to bear, therefore will not influence the whole atmosphere of kiln, it will not preheating section, oxidation panel to front
It has an impact.
Detailed description of the invention
To describe the technical solutions in the embodiments of the present invention more clearly, make required in being described below to embodiment
Attached drawing is briefly described.Obviously, described attached drawing is a part of the embodiments of the present invention, rather than is all implemented
Example, those skilled in the art without creative efforts, can also be obtained according to these attached drawings other designs
Scheme and attached drawing.
Fig. 1 is the structural schematic diagram in the reducing atmosphere region of roller kilns described in embodiment 1.
Specific embodiment
It is clearly and completely described below with reference to technical effect of the embodiment to design and generation of the invention, with
It is completely understood by the purpose of the present invention, feature and effect.Obviously, described embodiment is that a part of the invention is implemented
Example, rather than whole embodiments, based on the embodiment of the present invention, those skilled in the art is not before making the creative labor
Other embodiments obtained are put, the scope of protection of the invention is belonged to.
Embodiment 1
A kind of roller kilns are equipped with roller-way 020, the firing chamber 010 in the firing chamber 010 as shown in Figure 1, including firing chamber 010
Be divided into preheating section, oxidation panel, firing section and cooling section along the conveying direction of roller-way 020, the firing section by be sintered region,
It melts flat region and reducing atmosphere region 011 forms, be equipped with water-mist outlet, the water-mist outlet in the reducing atmosphere region 011
It is connected to by pipeline with the water source of peripheral hardware, the pipeline outside firing chamber 010 is additionally provided with valve switch 040 and pressure gauge 050, the water mist
Outlet is made of the drilling of high temperature resistant tubing 030, and the high temperature resistant tubing 030 is located at 020 top of roller-way, the hole face roller-way
020 surface.The aperture in the hole is 0.1~0.4mm, between two neighboring hole between be divided into 1~4cm.Water is in the high temperature resistant
Pressure in tubing is 0.2~0.8MPa.The water yield of the water-mist outlet is 30~120mL/min.
Glazed tile is fired according to the following steps using above-mentioned roller kilns:
1) base: by powder pressing at green compact, dry body is obtained after green compact are dry；
2) glazing: carrying out grinding process to dry body surface, and it is 60 DEG C~80 DEG C that base face temperature is controlled after cleaning, then carries out
Glazing and stamp；
3) it is burnt into: the adobe after glaze will be applied and be sent into roller kilns, successively by preheating section, oxidation panel, firing section and cold
But section；Wherein, the firing section by sintering region, melt flat region and reducing atmosphere region forms, the end in flat region is melted in control
Be maintained at 1060~1120 DEG C, reducing atmosphere region thereafter is sprayed water using 4 sparge pipes, control hydraulic pressure in 0.5Mpa,
Amount of water sprayed is 80ml/min, and a part of water mist decomposes production oxygen and hydrogen, another part water because of high fever in ejection moment
Become vapor at high temperature, so that the oxygen content in the reducing atmosphere region reduces, water-gas is enabled to can not be completely oxidized
Carbon monoxide can only be oxidized at carbon dioxide, by the ferric iron back in glaze at ferrous iron；
4) to the Ceramic Tiles after firing, edging, polishing treatment is carried out, finished product is obtained.
The glazed tile of firing does not turn to be yellow situation, and has apparent beautiful texture, while the brick shape of product, water absorption rate and disconnected
The physicochemical properties such as modulus are split not change compared with not spraying water.
Embodiment 2
Glazed tile is prepared using raw material same as Example 1 and similar process flow.The difference of process flow
Point is that reducing atmosphere region is sprayed water using 1 sparge pipe, controls hydraulic pressure in 0.2Mpa, amount of water sprayed 10ml/min.Though
Small-scale reducing atmosphere is still formed in right reducing atmosphere region, but glazed tile still has the case where jaundice.Brick shape, water absorption rate
Do not change compared with the glazed tile that do not spray water with physicochemical properties such as the moduluss of rupture.
Embodiment 3
Glazed tile is prepared using raw material same as Example 1 and similar process flow.The difference of process flow
Point is that reducing atmosphere region is sprayed water using 5 sparge pipes, control hydraulic pressure in 0.8Mpa, amount of water sprayed 120ml/min,
It is burnt into parameter and remains unchanged., there is apparent beautiful texture in the case where product of embodiment firing, product texture is not turned to be yellow.
But after amount of water sprayed increases, the brick shape of ceramic tile changes towards convex deformation direction, and the finished bricks modulus of rupture that is averaged is declined by 45Mpa
To 40Mpa.
It is compared by the various embodiments described above it is found that only by the water of sprinkling suitable parameters condition in reducing atmosphere region
Good reducing atmosphere could be built, so that glazed tile obtained had not only been kept excellent product parameters, but also can occur to avoid glaze
Yellow or yellowish-brown is variegated.
Better embodiment of the invention is illustrated above, but the invention is not limited to the implementation
Example, those skilled in the art can also make various equivalent modifications on the premise of without prejudice to spirit of the invention or replace
It changes, these equivalent variation or replacement are all included in the scope defined by the claims of the present application.
Claims (10)
1. a kind of glazed tile method for cooking, it is characterised in that the following steps are included:
1) base: by powder pressing at green compact, dry body is obtained after green compact are dry；
2) glazing: carrying out grinding process to dry body surface, and it is 60 DEG C~80 DEG C that base face temperature is controlled after cleaning, then carries out glazing
And stamp；
3) it is burnt into: roller kilns is sent into the adobe after application glaze, successively pass through preheating section, oxidation panel, firing section and cooling section,
The firing section includes the sintering region positioned at leading portion and the reducing atmosphere region positioned at endpiece, and the reducing atmosphere region is logical
It crosses and is passed through reducing atmosphere of the water mist formation containing hydrogen and carbon monoxide；
4) to the Ceramic Tiles after firing, edging, polishing treatment is carried out, finished product is obtained.
2. glazed tile method for cooking according to claim 1, which is characterized in that dry body moisture content described in step 1 be 0.3~
0.8%.
3. glazed tile method for cooking according to claim 1, which is characterized in that clean process described in step 2 includes using
Blower blows off base face, then sprays proper amount of clear water.
4. glazed tile method for cooking according to claim 1, which is characterized in that the intake of water mist described in step 3 is 30
~100mL/min.
5. glazed tile method for cooking according to claim 1, which is characterized in that described in step 3 be sintered region temperature be
1100~1250 DEG C.
6. a kind of roller kilns, it is characterised in that: including firing chamber, roller-way, conveying of the firing chamber along roller-way are equipped in the firing chamber
Direction is divided into preheating section, oxidation panel, firing section and cooling section, and the firing section is by being sintered region, melting flat region and reduction
Atmosphere zones form, and water-mist outlet is equipped in the reducing atmosphere region, and the water-mist outlet passes through the water source of pipeline and peripheral hardware
Connection.
7. roller kilns according to claim 6, it is characterised in that: the water-mist outlet is to be drilled to make by high temperature resistant tubing
At the high temperature resistant tubing is located above roller-way, the hole face roller table surface.
8. roller kilns according to claim 7, it is characterised in that: the aperture in the hole is 0.1~0.4mm, two neighboring
1~4cm is divided between hole.
9. roller kilns according to claim 7, it is characterised in that: pressure of the water in the high temperature resistant tubing be 0.2~
0.8MPa。
10. according to the described in any item roller kilns of claim 6~9, it is characterised in that: the water yield of the water-mist outlet is 30
~120mL/min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910769751.2A CN110483065A (en) | 2019-08-20 | 2019-08-20 | A kind of glazed tile method for cooking and the corresponding roller kilns used |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910769751.2A CN110483065A (en) | 2019-08-20 | 2019-08-20 | A kind of glazed tile method for cooking and the corresponding roller kilns used |
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| CN110483065A true CN110483065A (en) | 2019-11-22 |
Family
ID=68552267
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910769751.2A Pending CN110483065A (en) | 2019-08-20 | 2019-08-20 | A kind of glazed tile method for cooking and the corresponding roller kilns used |
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| CN (1) | CN110483065A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111592343A (en) * | 2020-06-04 | 2020-08-28 | 赵小晶 | Biscuit firing method for ceramic green body |
| CN112683056A (en) * | 2020-12-04 | 2021-04-20 | 曲靖云铝淯鑫铝业有限公司 | Oven process for accelerating formation of high-quality glaze layer |
| CN113618891A (en) * | 2020-10-28 | 2021-11-09 | 唐克勇 | Integrated device for drying, glazing and firing tile blanks |
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2019
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111592343A (en) * | 2020-06-04 | 2020-08-28 | 赵小晶 | Biscuit firing method for ceramic green body |
| CN113618891A (en) * | 2020-10-28 | 2021-11-09 | 唐克勇 | Integrated device for drying, glazing and firing tile blanks |
| CN112683056A (en) * | 2020-12-04 | 2021-04-20 | 曲靖云铝淯鑫铝业有限公司 | Oven process for accelerating formation of high-quality glaze layer |
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Application publication date: 20191122 |
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