CN110304897A - A kind of Imitation Rock Porcelain Tiles and preparation method thereof - Google Patents
A kind of Imitation Rock Porcelain Tiles and preparation method thereof Download PDFInfo
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- CN110304897A CN110304897A CN201910531958.6A CN201910531958A CN110304897A CN 110304897 A CN110304897 A CN 110304897A CN 201910531958 A CN201910531958 A CN 201910531958A CN 110304897 A CN110304897 A CN 110304897A
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Abstract
The invention discloses a kind of preparation methods of Imitation Rock Porcelain Tiles comprising raw material mixing, drying；Grinding；Add water, stirring-granulating obtains powder；Powder cloth is expected in saggar；The saggar for filling powder is burnt 850~1000 DEG C in advance in roller kilns；Saggar is integrally placed in hot press, molding obtains green body；The green body is taken out from saggar, and obtains Imitation Rock Porcelain Tiles finished product after 1160~1300 DEG C of firings.Implement the present invention, the usage amount of high-quality clay can be significantly reduced, the unit energy consumption of Imitation Rock Porcelain Tiles is reduced, significantly reduce production cost.
Description
Technical field
The present invention relates to architectural pottery technical fields more particularly to a kind of Imitation Rock Porcelain Tiles and preparation method thereof.
Background technique
Currently, common high-quality clay (such as black mud, white clay, kaolin) is increasingly depleted in Building Ceramics Industry, and with
The reinforcement of environmental consciousness, country put into effect a variety of clays limit and adopted policy, cause the price of high-quality clay to climb up and up, ceramics
Manufacturing enterprise's pressure is huge.
High-quality clay refers to that weathering is complete, the good clay of plasticity；This clay is usually in pureed, and true partial size is in 2 μ
M or so；Often there are a large amount of absorption water since weathering is complete, in interlayer structure, causes its moisture content higher, especially in south
Side, rainy season moisture content can reach 37% or more.This high-quality clay acts in architectural pottery preparation process mainly to be had: in ball
It grinds among pulping process, facilitates the suspension, the stability that maintain slurry；It is sprayed in pulverizing process in slurry, facilitates slurry
Reunite, forms the uniform powder of gradation；It is being pressed into the stage, viscous effect is provided, green strength is provided；In the firing stage, generate
Mullite promotes Imitation Rock Porcelain Tiles intensity.The usage amount of high-quality clay is reduced, then must be gone more using other effective technology means
Loss of effect caused by benefit.
A kind of common method is that the mode of reinforcing agent is added to substitute high-quality clay using more low-quality clay；It is so-called
It is very complete clay that low-quality clay, which refers to weathering not, often contains the ingredients such as some quartz, mica, feldspar, and partial size
Larger, plasticity is poor.The core of this method is the plasticity demand met in Ceramic Tiles cold pressure procedure；But this reinforcing agent is in slurry
Stage is often difficult to dispergation, causes to need to add a large amount of degumming agent in formula, greatly improves cost of material；And this method
Substitution effect is limited.
In view of the foregoing drawbacks, inventor herein proposes the patent of invention (Shen of the planar hot pressing formation process of architectural pottery
Please number be CN200510120776.8)；It is proposed first preheats powder, then carries out hot pressing, is burnt into；It is viscous to reach reduction room temperature
Property raw material (i.e. clay) purpose, but this technique be concerned only with clay stickiness effect, have ignored clay in slurrying, powder mistake processed
Effect in journey, therefore, it is difficult to implement.
Summary of the invention
Technical problem to be solved by the present invention lies in provide a kind of preparation method of Imitation Rock Porcelain Tiles, life can be effectively reduced
Cost is produced, energy consumption is reduced, promotes Imitation Rock Porcelain Tiles bulk density and hardness.
The present invention also technical problems to be solved are, provide a kind of Imitation Rock Porcelain Tiles.
In order to solve the above-mentioned technical problems, the present invention provides a kind of preparation methods of Imitation Rock Porcelain Tiles comprising:
(1) by 2~8 parts of quick clay, 25~40 parts of weak plastic clay, 15~30 parts of potassium feldspar, albite 5~20
Part, 1~10 part of bauxite, 1~8 part of talcum is uniformly mixed, and is dried to moisture content≤10wt%, obtains mixture；
(2) the mixture grinding to 250 meshes is tailed over≤3%, obtains micro mist material；
(3) water is added in the micro mist material, stirring-granulating obtains powder；
(4) the powder cloth is expected in saggar；
(5) saggar for filling powder is burnt 850~1000 DEG C in advance in roller kilns；
(6) saggar is integrally placed in hot press, molding obtains green body；
(7) green body is taken out from saggar, and obtains Imitation Rock Porcelain Tiles finished product after 1160~1300 DEG C of firings.
As an improvement of the above technical solution, plasticity index >=17 of the quick clay；The weak plastic clay
Plasticity index≤8；
The quick clay is selected from one of black mud, white clay, bentonite, kaolin, montmorillonite, ball clay, kieselguhr
Or it is a variety of.
As an improvement of the above technical solution, in step (3), the moisture content of the powder is 6~10wt%；
In the powder, particle accounting >=50wt% of the partial size less than 100 mesh；Partial size be greater than 20 mesh particle accounting≤
5wt%.
As an improvement of the above technical solution, in step (3), the grain composition in the powder are as follows: it is more than 20 mesh, accounting
1~3wt%；20~60 mesh, 10~20wt% of accounting；60~100 mesh, 10~20wt% of accounting；100 mesh hereinafter, accounting 60~
75wt%.
As an improvement of the above technical solution, in step (5), the pre-burning is carried out according to the first sintering curve；Described
One sintering curve are as follows:
From room temperature to 150 DEG C, using the heating rate of 20~30 DEG C/min；
5~10 minutes are kept the temperature at 150 DEG C；
From 150 DEG C to 600 DEG C, using the heating rate of 30~50 DEG C/min；
From 600 DEG C to calcined temperature, using the heating rate of 20~30 DEG C/min；
Wherein, the calcined temperature is 850~1000 DEG C.
As an improvement of the above technical solution, in step (6), briquetting pressure is 10~15 MPa.
As an improvement of the above technical solution, in step (7), the firing is carried out according to the second sintering curve；Described
Two sintering curves are as follows:
From 800 DEG C to 1000 DEG C, using the heating rate of 10~25 DEG C/min；
From 1000 DEG C to firing temperature, using the heating rate of 8~15 DEG C/min；
Then 5~15 minutes are kept the temperature in firing temperature；
Wherein, the firing temperature is 1180~1250 DEG C.
As an improvement of the above technical solution, in step (2), using mixture described in vertical mill grinding；
In step (3), it is granulated using granulating disc, GRC.
Correspondingly, using above-mentioned preparation method to be prepared the present invention also provides a kind of Imitation Rock Porcelain Tiles.
As an improvement of the above technical solution, the Imitation Rock Porcelain Tiles are polished bricks.
The invention has the following beneficial effects:
1. molding adds at this point, ceramic powder particle surface softens after ceramic powder is heated to 800 DEG C or more by the present invention
Ceramic powder generates thermoplastic flowing after pressure, and deformation drag is small, so that briquetting pressure is greatly reduced；Meanwhile powder is reduced normal
Plasticity demand under temperature state reduces the usage amount of high-quality clay；Significantly reduce production cost.
2. the powder production technology that the present invention is granulated using drying-dry method grinding-plus water, can be greatly reduced powder and produce
Energy consumption among journey；And present invention reduces the dosages of highly plastic clay, so that firing time of the green body in oxidation panel
Substantially shorten；The compound unit energy consumption for significantly reducing Imitation Rock Porcelain Tiles of the two.
3. the present invention is by obtaining the grain composition of powder in control granulation process, so that powder aggregate is closely knit after cloth
Degree is reasonable, facilitates to form decorative pattern, also facilitates and is vented among later period sintering process.
Detailed description of the invention
Fig. 1 is a kind of flow chart of Imitation Rock Porcelain Tiles preparation method of the present invention.
Specific embodiment
To make the object, technical solutions and advantages of the present invention clearer, the present invention is made into one below in conjunction with attached drawing
Step ground detailed description.Only this is stated, the present invention occurs in the text or will occur up, down, left, right, before and after, it is inside and outside etc. just
Position word is not to specific restriction of the invention only on the basis of attached drawing of the invention.
Referring to Fig. 1, the invention discloses a kind of preparation methods of Imitation Rock Porcelain Tiles, comprising the following steps:
S1: various raw materials are mixed according to formula, obtain mixture；
Specifically, step S1 includes:
S101: by 2~8 parts of quick clay, 25~40 parts of weak plastic clay, 15~30 parts of potassium feldspar, albite 5~20
Part, 1~10 part of bauxite, 1~8 part of talcum is uniformly mixed；
Wherein, quick clay is the clay of plasticity index >=17, is in pureed more, and actual particle size is 2 μm or so；Specifically
, the quick clay is selected from one of black mud, white clay, bentonite, kaolin, montmorillonite, ball clay, kieselguhr or more
Kind.Preferably, quick clay selects one or both of black mud, white clay, ball clay.
Weak plastic clay is the clay of plasticity index≤8；It is mostly the incomplete clay of weathering；It is incited somebody to action from mineral composition,
The mostly mixture of feldspar, mica group, kaolinite (or illite) class mineral earthy or sand shape, average grain diameter is presented more
It is larger.
Among formula of the invention, quick clay is 2~8 parts, and weak plastic clay is 25~40 parts；Preferably, by force
Plastic clay is 2~5 parts；Weak plastic clay is 25~36 parts；When quick clay usage amount is too low, the later period is granulated difficulty,
So that powder arch bridge effect is serious, difficulty is transported；When weak plastic clay, quick clay usage amount are too low, after high temperature firing
Mullite crystal content is low, and product intensity is low.
Further, in order to promote firing intensity, it is added to 1~10 part of bauxite among formula, can effectively mention
Aluminium content is risen, needle-shaped, rod-like mullite crystalline content after firing is promoted, promotes intensity.Preferably, the content of bauxite is 1~5
Part.
It should be noted that existing Imitation Rock Porcelain Tiles formula among, the clay content of general high-ductility need accounting 18~
20% or so；To meet cold moudling, ball milling slurrying, among mist projection granulating process the needs of.The present invention is by hot-forming, greatly
Width reduces the demand for plasticity, therefore reduces the content of high-quality clay；Meanwhile the present invention is added by dry method grinding
Water prilling also significantly reduces its demand to slurry suspension function, and the two is compound, so that highly plastic clay in the present invention
Content be greatly reduced, save production cost.
In addition, among formula of the invention also include 15~30 parts of potassium feldspar, 5~20 parts of albite, 1~8 part of talcum,
It is flux class raw material, powder is enabled to melt at high temperature, be bonded, forms Imitation Rock Porcelain Tiles.Wherein, the additional amount of albite is
5~20 parts, the additional amount of talcum is 1~8 part；Preferably, the additional amount of albite is 10~20 parts, and talcum is 2~5 parts；It is sliding
Stone and albite cooperate, and after pre-burning, can enhance the hot melt mobility of powder；It is pressed into convenient for hot pressing.
It should be noted that above-mentioned all parts, and the part being mentioned below is parts by weight.
S102: it is dried to moisture content≤10wt%, obtains mixture；
Among the present invention, pureed is generally presented in quick clay, and moisture content is higher, is 25~35wt% or so.It is weak
Sand shape or earthy is generally presented in plastic clay, and moisture content is lower；Average moisture content is smaller, in 20wt% or less；Potassium feldspar, sodium are long
Stone shape is presented in stone, talcum, bauxite, and moisture content is very low, in 5wt% or so.The present invention is greatly reduced by heat pressing process
The usage amount of high-moisture percentage pug, so that the composite water cut of mixture is greatly reduced.Again by simply drying, can make
The composite water cut of mixture drops to 10wt% hereinafter, meeting dry method grinding process.Substantially save energy.
It should be noted that general ceramics flouring technology are as follows: mix plurality of raw materials, added in obtained mixture
Water, is then milled to obtain the slurry that moisture content is 35~37% or so, and it is 5~7% that then spray drying, which obtains moisture content,
Powder；This just needs a large amount of thermal energy to evaporate water, causes to consume energy among pulverizing process very big.And the present invention then passes through dry method work
Skill carries out powder processed, and 60% or more heat can be at least saved on raw material to powder stage, reduces production cost.Meanwhile this
Dry method grinding process in invention decreases the practical of the additives such as water-reducing agent, reinforcing agent, saves production cost.
S2: by the mixture grinding, micro mist material is obtained；
Grinding is carried out to mixture specifically, Vertical Mill can be used；Vertical Mill is ring-roller mill, is ground by roll-type, hot wind
Selection by winnowing realizes grinding.After vertical mill grinding, 250 meshes of micro mist material tail over≤3wt%；Preferably, 250 mesh of micro mist material
Tail over≤1wt%.The micro mist material of this fineness can the vitreous among sintering process, obtain Imitation Rock Porcelain Tiles.
S3: being added water among micro mist material, and stirring-granulating obtains powder；
Specifically, granulating disc can be used, GRC pelletizer carries out non-slurry pelletizing.Preferably, it is public that Italian LB can be used
The GRC pelletizer of department's production is granulated.
After granulation, particle accounting >=50wt% of the partial size less than 100 mesh in powder；Partial size be greater than 20 mesh particle accounting≤
5wt%.Preferably, after granulation powder grain composition are as follows: it is more than 20 mesh, 1~3wt% of accounting；20~60 mesh, accounting 10~
20wt%；60~100 mesh, 10~20wt% of accounting；100 mesh are hereinafter, 60~75wt% of accounting.The powder of this grain composition is rear
Compaction rate is reasonable among continuous cloth process, facilitates to form decorative pattern；It is also convenient for conveying simultaneously, meets production requirement.
It should be noted that among traditional ceramic process process, in order to realize that cold pressing green density maximizes；One
As require after the pelletizing, among powder, the following particle of 100 mesh (i.e. particle of the partial size less than 100 mesh) < 10%；Because of fine powder mistake
When more, among cold pressure procedure, mobility is too poor, and green body is uneven, is easy cracking, and layer is split.And the present invention uses heat pressing process,
There is no the above problems, therefore only need to carry out powder simply water to be added to be granulated, so that it does not generate arch bridge among storage process
Effect is readily transported.
S4: powder cloth is expected among saggar；
Specifically, the charge car that can be used among traditional ceramics industry carries out powder cloth；Single cloth can be carried out, is formed
All-body tile；Also twice or repeatedly cloth can be carried out；Form the ceramic tile that surface has complex texture.Preferably, using cloth twice,
Respectively bottom material and fabric；To be burnt into polished bricks.
S5: saggar pre-burning in roller kilns of powder will be filled；
Specifically, saggar, which enters, carries out pre-burning after cloth among roller kilns；Burn-in process according to the first sintering curve into
Row, the first sintering curve are as follows: from room temperature to 150 DEG C, using the heating rate of 20~30 DEG C/min；5~10 points are kept the temperature at 150 DEG C
Clock；From 150 DEG C to 600 DEG C, using the heating rate of 30~50 DEG C/min；From 600 DEG C to calcined temperature, using 20~30 DEG C/
The heating rate of min；Wherein, the calcined temperature is 850~1000 DEG C.
It should be noted that since traditional Ceramic Tiles are after cold pressing then body drying is burnt into；In order to ensure
It is burnt into quality, it is relatively slow (15 DEG C/min of <) in 600~800 DEG C of oxidation panel general heating rates；And it is reduced in the present invention high-plastic
The content of property clay, so that oxidation panel needs the period；Simultaneously because being burnt into using loose powder aggregate, so that oxygen
It is more easy to change；The two is compound, and the firing time of oxidation panel is just greatly shortened, and saves the heat among sintering process.
S6: saggar is integrally placed in hot press, and molding obtains green body；
Wherein, hot press molding pressure is 10~15 MPa；Traditional cold moudling pressure is generally in 35MPa or more.
S7: green body is taken out from saggar, and is fired into Imitation Rock Porcelain Tiles finished product.
Specifically, the firing is carried out according to the second sintering curve；Second sintering curve are as follows: from 800 DEG C to 1000
DEG C, using the heating rate of 10~25 DEG C/min；From 1000 DEG C to firing temperature, using the heating rate of 8~15 DEG C/min；So
5~15 minutes are kept the temperature in firing temperature afterwards；Wherein, the firing temperature is 1180~1250 DEG C.
Among hot pressing, green body temperature by reducing a little；Therefore among sintering process, 800 DEG C are chosen as starting
Temperature；It is burnt into.
Correspondingly, using the above method to prepare the invention also discloses a kind of Imitation Rock Porcelain Tiles.It preferably, is polished bricks.
Invention is further explained combined with specific embodiments below:
Embodiment 1
Formula
2 parts of quick clay, 40 parts of weak plastic clay, 20 parts of potassium feldspar, 20 parts of albite, 10 parts of bauxite, talcum 8
Part.
Wherein, strong fat clay selects black mud, plasticity index 20；Moisture content is 35%；Weak plastic clay is selected
High-al clay, plasticity index 8, moisture content 18%.
Preparation method:
(1) it is mixed according to formula, and being dried to composite water cut is 10%, obtains mixture；
(2) by mixture grinding, micro mist material is obtained, it is 1.5% that 250 meshes of micro mist material, which tail over,；
(3) plus water is granulated, and obtains powder；Wherein, powder moisture content is 6%；
(4) cloth expects saggar；
(5) saggar burns 850 DEG C in advance；
(6) saggar integrally carries out hot pressing, and molding obtains green body；Wherein, briquetting pressure is 10 MPa；
(7) green body is taken out from saggar, is fired into finished product at 1160 DEG C.
Embodiment 2
Formula
8 parts of quick clay, 30 parts of weak plastic clay, 30 parts of potassium feldspar, 20 parts of albite, 10 parts of bauxite, talcum 2
Part.
Wherein, strong fat clay selects white clay, plasticity index 18；Moisture content is 31%；Weak plastic clay is selected
High-al clay, plasticity index 8, moisture content 18%.
Preparation method:
(1) it is mixed according to formula, and being dried to composite water cut is 8%, obtains mixture；
(2) by mixture grinding, micro mist material is obtained, it is 3% that 250 meshes of micro mist material, which tail over,；
(3) plus water is granulated, and obtains powder；Wherein, powder moisture content is 10%；
(4) cloth expects saggar；
(5) saggar burns 1000 DEG C in advance；
(6) saggar integrally carries out hot pressing, and molding obtains green body；Wherein, briquetting pressure is 15 MPa；
(7) green body is taken out from saggar, is fired into finished product at 1300 DEG C.
Embodiment 3
Formula
4 parts of quick clay, 36 parts of weak plastic clay, 26 parts of potassium feldspar, 18 parts of albite, 8 parts of bauxite, 8 parts of talcum.
Wherein, strong fat clay selects black mud, plasticity index 20；Moisture content is 35%；Weak plastic clay is selected
High-al clay, plasticity index 8, moisture content 18%；The moisture content of potassium feldspar is 2%, albite, bauxite and talcum
Moisture content is 5%；
Preparation method:
(1) it is mixed according to formula, and being dried to composite water cut is 10%, obtains mixture；
Wherein exist, after mixing, sampling and testing mixing water content of matter is 10.3%；
(2) by mixture grinding, micro mist material is obtained, it is 1% that 250 meshes of micro mist material, which tail over,；Moisture content is 0.2% (meter
Over dry is directly taken during calculating)；
(3) plus water is granulated, and obtains powder；Wherein, powder moisture content is 7%；
The grain composition of powder are as follows: it is more than 20 mesh, 3%；20~60 mesh 14%；60~100 mesh 12%；Below 100 mesh
71%.
(4) cloth expects saggar；
(5) saggar burns 900 DEG C in advance；
Wherein, the sintering curve of pre-burning are as follows: for room temperature to 150 DEG C, heating rate is 20 DEG C/min；150 DEG C keep the temperature 7 minutes；
150~600 DEG C, heating rate is 35 DEG C/min；600~900 DEG C, heating rate is 25 DEG C/min；
(6) saggar integrally carries out hot pressing, and molding obtains green body；Wherein, briquetting pressure is 12 MPa；
(7) green body is taken out from saggar, is fired into finished product at 1220 DEG C.
Wherein, sintering curve are as follows: 800 DEG C to 1000 DEG C, using the heating rate of 20 DEG C/min；From 1000 DEG C to 1220,
Using the heating rate of 12 DEG C/min；Then 6 minutes are kept the temperature at 1220 DEG C.
As it can be seen that whole pre-burning+firing period is 75 minutes.
Comparative example 1
Formula: 18 parts of black mud, 20 parts of high alumina stone, 35 parts of potassium feldspar, 15 parts of albite, 2 parts of talcum, 8 parts of bauxite；Diminishing
0.5 part of agent.
Preparation method:
(1) various raw materials are mixed, water for ball milling is added to obtain slurry, be spray-dried powder processed；Obtain powder；
Wherein, the moisture content of raw mixture is 12%；Slurry moisture content is 35%, and fineness is that 250 meshes tail over 1%,
Powder moisture content is 7%；
(2) powder is pressed into green body at 35MPa；Then in dry kiln drying, the drying period is 20 minutes；
(3) green body after drying is burnt at 1220 DEG C, and firing period is 68 minutes.
The Imitation Rock Porcelain Tiles that embodiment 1-3, comparative example 1 obtain are tested for the property, are as follows:
| Water absorption rate | The modulus of rupture (MPa) | Bulk density (g/cm3) | Mohs' hardness | |
| Embodiment 1 | 0.4% | 38 | 2.25 | 7 |
| Embodiment 2 | 0.1% | 48 | 2.28 | 7 |
| Embodiment 3 | 0.05% | 62 | 2.41 | 8 |
| Comparative example 1 | 0.1% | 42 | 2.21 | 7 |
Further, powder stage energy consumption processed in embodiment 3, comparative example 1 is calculated；As shown in the table, it needs
Illustrate, it is that engineering commonly calculates data that 1kg water, which needs 830kcal energy from room temperature heating,.
| Embodiment 3 | Comparative example 1 | |
| Powder | 100kg | 100kg |
| Siccative amount | 93kg | 93kg |
| Mix object amount | 103.68kg | / |
| Amount of slurry | / | 143.08kg |
| Need evaporated water | 10.68kg | 43.08 |
| Energy consumption (kcal) | 8864.4 | 35756.4 |
As can be seen from the above table, technique of the invention can save energy 75.2% or so, energy-saving effect is bright in the powder stage processed
It is aobvious.
The above is the preferred embodiment of invention, it is noted that those skilled in the art are come
It says, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also considered as this
The protection scope of invention.
Claims (10)
1. a kind of preparation method of Imitation Rock Porcelain Tiles characterized by comprising
(1) by 2~8 parts of quick clay, 25~40 parts of weak plastic clay, 15~30 parts of potassium feldspar, 5~20 parts of albite, aluminium
1~10 part of alumina, 1~8 part of talcum is uniformly mixed, and is dried to moisture content≤10wt%, obtains mixture；
(2) the mixture grinding to 250 meshes is tailed over≤3%, obtains micro mist material；
(3) water is added in the micro mist material, stirring-granulating obtains powder；
(4) the powder cloth is expected in saggar；
(5) saggar for filling powder is burnt 850~1000 DEG C in advance in roller kilns；
(6) saggar is integrally placed in hot press, molding obtains green body；
(7) green body is taken out from saggar, and obtains Imitation Rock Porcelain Tiles finished product after 1160~1300 DEG C of firings.
2. the preparation method of Imitation Rock Porcelain Tiles as described in claim 1, which is characterized in that the plasticity index of the quick clay
≥17；Plasticity index≤8 of the weak plastic clay；
The quick clay is selected from one of black mud, white clay, bentonite, kaolin, montmorillonite, ball clay, kieselguhr or more
Kind.
3. the preparation method of Imitation Rock Porcelain Tiles as described in claim 1, which is characterized in that in step (3), the moisture content of the powder
For 6~10wt%；
In the powder, particle accounting >=50wt% of the partial size less than 100 mesh；Partial size is greater than particle accounting≤5wt% of 20 mesh.
4. the preparation method of Imitation Rock Porcelain Tiles as claimed in claim 3, which is characterized in that the particle in step (3), in the powder
Gradation are as follows: it is more than 20 mesh, 1~3wt% of accounting；20~60 mesh, 10~20wt% of accounting；60~100 mesh, accounting 10~
20wt%；100 mesh are hereinafter, 60~75wt% of accounting.
5. the preparation method of Imitation Rock Porcelain Tiles as described in claim 1, which is characterized in that in step (5), the pre-burning is according to first
Sintering curve carries out；First sintering curve are as follows:
From room temperature to 150 DEG C, using the heating rate of 20~30 DEG C/min；
5~10 minutes are kept the temperature at 150 DEG C；
From 150 DEG C to 600 DEG C, using the heating rate of 30~50 DEG C/min；
From 600 DEG C to calcined temperature, using the heating rate of 20~30 DEG C/min；
Wherein, the calcined temperature is 850~1000 DEG C.
6. the preparation method of Imitation Rock Porcelain Tiles as described in claim 1, which is characterized in that in step (6), briquetting pressure be 10~
15MPa。
7. the preparation method of Imitation Rock Porcelain Tiles as described in claim 1, which is characterized in that in step (7), the firing is according to second
Sintering curve carries out；Second sintering curve are as follows:
From 800 DEG C to 1000 DEG C, using the heating rate of 10~25 DEG C/min；
From 1000 DEG C to firing temperature, using the heating rate of 8~15 DEG C/min；
Then 5~15 minutes are kept the temperature in firing temperature；
Wherein, the firing temperature is 1180~1250 DEG C.
8. the preparation method of Imitation Rock Porcelain Tiles as described in claim 1, which is characterized in that in step (2), using described in vertical mill grinding
Mixture；
In step (3), it is granulated using granulating disc, GRC pelletizer.
9. a kind of Imitation Rock Porcelain Tiles, which is characterized in that it uses the described in any item preparation methods of claim 1-8 to be such as prepared.
10. Imitation Rock Porcelain Tiles as claimed in claim 9, which is characterized in that the Imitation Rock Porcelain Tiles are polished bricks.
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| WO2022139759A1 (en) * | 2020-12-25 | 2022-06-30 | Esan Eczacibasi Endustriyel Hammaddeler Sanayi Ve Ticaret Anonim Sirketi | Body composition sintered at low temperatures and tile obtained with said composition |
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Application publication date: 20191008 |