CN109678345A - A kind of high whiteness ground coat enamel and preparation method thereof - Google Patents
A kind of high whiteness ground coat enamel and preparation method thereof Download PDFInfo
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- CN109678345A CN109678345A CN201811644694.7A CN201811644694A CN109678345A CN 109678345 A CN109678345 A CN 109678345A CN 201811644694 A CN201811644694 A CN 201811644694A CN 109678345 A CN109678345 A CN 109678345A
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- C—CHEMISTRY; METALLURGY
- 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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- 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
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/009—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone characterised by the material treated
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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
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/45—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements
- C04B41/50—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with inorganic materials
- C04B41/5022—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with inorganic materials with vitreous materials
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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
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/80—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone of only ceramics
- C04B41/81—Coating or impregnation
- C04B41/85—Coating or impregnation with inorganic materials
- C04B41/86—Glazes; Cold glazes
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- C—CHEMISTRY; METALLURGY
- 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
- C03C2204/00—Glasses, glazes or enamels with special properties
- C03C2204/04—Opaque glass, glaze or enamel
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Abstract
The invention belongs to glaze fields, specifically disclose a kind of high whiteness ground coat enamel, chemical component is according to percent by weight are as follows: Al2O318-25%, SiO255-62%, CaO 0.1-0.5%, MgO 0.01-0.1%, Na2O 2-5%, K2O 2-5%, ZrO22-5%, BaO 8-10%, ZnO 4-6%, Fe2O30.01-0.05%, B2O31-3%；Al2O3/(Na2O+K2It O+BaO+ZnO) is 0.7-1.6；B2O3/(Na2O+K2It O) is 0.1-0.5.The present invention reduces zirconium-containing material, the usage amount containing magnesium raw material, reduces production cost by reasonable formulation composition.It has also ensured whiteness >=65% of ground coat enamel simultaneously, and has ensured that ground coat enamel has reasonable firing range, can be applied to the decoration of existing various Imitation Rock Porcelain Tiles；Also ensure that its body and glaze associativity is good simultaneously.Correspondingly, the invention also discloses a kind of preparation methods of above-mentioned high whiteness ground coat enamel.
Description
Technical field
The invention belongs to glaze technical fields more particularly to a kind of high whiteness ground coat enamel and preparation method thereof.
Background technique
Common Ceramic Tiles are usually sintered after billet surface applies ground coat enamel, printed decoration pattern, applies overglaze and are made.Bottom
Glaze generally uses opaque glaze, and to cover the defect of billet surface, while also the color development of non-decorative pattern provides good basis.It mentions
The whiteness for rising ground coat enamel is most important for the decoration function for promoting Ceramic Tiles.
The common method for promoting glaze whiteness is that the zirconium silicate of 5-10% is added among glaze, to promote the white of glaze
Degree.But in recent years, zirconium silicate price can not have always been high any more, and ceramic producer faces huge cost pressure, therefore, develop a kind of silicon
The sour lower glaze of zirconium content is very important.
In addition, the whiteness of glaze is also related with the ferrotitanium contained among raw material, common method be carry out after slurrying it is wet
Method removes iron, and de-ironing efficiency is lower.
Summary of the invention
Technical problem to be solved by the present invention lies in provide a kind of high whiteness ground coat enamel, amount containing zirconium is low, at low cost；It is white
Degree is high, has good decoration function, while firing temperature is reasonable, body and glaze associativity is good.
The present invention also technical problems to be solved are, provide a kind of preparation method of above-mentioned high whiteness ground coat enamel.
In order to solve the above-mentioned technical problems, the present invention provides a kind of high whiteness ground coat enamels, and chemical component is according to weight hundred
Score is calculated as: Al2O318-25%, SiO255-62%, CaO 0.1-0.5%, MgO 0.01-0.1%, Na2O 2-5%, K2O
2-5%, ZrO20-5%, BaO 8-10%, ZnO 4-6%, Fe2O30.01-0.05%, B2O31-3%；
Wherein, Al2O3/(Na2O+K2It O+BaO+ZnO) is 0.7-1.6；B2O3/(Na2O+K2It O) is 0.1-0.5.
As an improvement of the above technical solution, chemical component is according to percent by weight are as follows: Al2O318-22%, SiO2
55-60%, CaO 0.1-0.3%, MgO 0.01-0.1%, Na2O 3-5%, K2O 3-5%, ZrO22-5%, BaO 8-
10%, ZnO 4-6%, Fe2O30.01-0.05%, B2O31-2%.
As an improvement of the above technical solution, the firing temperature of the high whiteness ground coat enamel is 1120-1300 DEG C, white after firing
Degree >=65%.
As an improvement of the above technical solution, the firing temperature of the high whiteness ground coat enamel is 1180-1250 DEG C.
As an improvement of the above technical solution, it is made of the raw material of following weight parts: 5-20 parts of kaolin, quartzy 2-5
Part, 1-10 parts of aluminium oxide, 0.1-3 parts of wollastonite, talcum 0.1-1 parts is burnt, 10-35 parts of potassium feldspar, 10-20 parts of albite, is aoxidized
1-5 parts of zinc, 0-5 parts of zirconium silicate, 5-15 parts of barium carbonate, 0.5-3 parts of boric acid.
As an improvement of the above technical solution, it is made of the raw material of following weight parts: 5-10 parts of kaolin, quartzy 2-5
Part, 3-8 parts of aluminium oxide, 0.1-1 parts of wollastonite, talcum 0.1-0.5 parts is burnt, 10-25 parts of potassium feldspar, 10-20 parts of albite, is aoxidized
3-5 parts of zinc, 0.5-2 parts of zirconium silicate, 10-15 parts of barium carbonate, 0.5-2 parts of boric acid.
As an improvement of the above technical solution, the aluminium oxide is low calcined alumina, and average grain diameter is 1.0-50 μm；
Specific surface area is 7.0-10.0m2/g；
The average grain diameter of the zirconium silicate is 5-10 μm；
In the kaolin, Fe2O3Content < 0.5wt%.
Correspondingly, the invention also discloses a kind of preparation methods of above-mentioned high whiteness ground coat enamel comprising:
(1) various raw materials are mixed, aquation is added and starches to obtain slurry；
(2) by the sizing material iron removing；
(3) ball mill is added in the slurry, is milled to 250 sieves and tails over < 0.1%；Obtain the high whiteness ground coat enamel at
Product.
As an improvement of the above technical solution, step (1) includes:
(1.1) edge runner is respectively adopted in quartz, potassium feldspar, albite and is crushed to 80-100 mesh, remove iron；
(1.2) quartz, potassium feldspar, albite are mixed with other raw materials, aquation is added and starches to obtain slurry；
As an improvement of the above technical solution, in step (3), the specific gravity of the high whiteness ground coat enamel is 1.9g/mL, and flow velocity is
25-35s。
The beneficial effects of the practice of the present invention is as follows:
1, the present invention reduces zirconium-containing material, the usage amount containing magnesium raw material, reduces production by reasonable formulation composition
Cost.Formula in the present invention, in the case where not containing zirconium, whiteness >=65%；After adding zirconium, whiteness is promoted, highest
Whiteness is not less than 85%.
2, the present invention passes through reasonable formulation composition, it is ensured that ground coat enamel has reasonable firing range, can be applied to existing
There is the decoration of various Imitation Rock Porcelain Tiles；Also ensure that its body and glaze associativity is good simultaneously.
3, the present invention has effectively removed the iron tramp contained in raw material using graded crushing, the form of graded deferrization, is promoted
Ground coat enamel whiteness, and graded crushing effectively improves crushing efficiency, reduces Ball-milling Time, reduce energy consumption.
Specific embodiment
To make the object, technical solutions and advantages of the present invention clearer, the present invention will be made below further detailed
Description.
Traditional ground coat enamel is high using zirconium-containing material amount, at high cost.In order to solve this problem, the invention discloses a kind of Gao Bai
Ground coat enamel is spent, chemical component is according to percent by weight are as follows: Al2O318-25%, SiO255-62%, CaO 0.1-0.5%,
MgO 0.01-0.1%, Na2O 2-5%, K2O 2-5%, ZrO20-5%, BaO 8-10%, ZnO 4-6%, Fe2O3 0.01-
0.05%, B2O31-3%；Wherein, Al2O3/(Na2O+K2It O+BaO+ZnO) is 0.7-1.6；B2O3/(Na2O+K2It O) is 0.1-
0.5。
In ground coat enamel of the invention, amount containing zirconium is low, at low cost；But its whiteness is high, whiteness >=60% after firing；With good
Decoration function.
In the chemical component of ground coat enamel of the present invention, ZrO2Zircon crystal can be changed into during firing, the bottom of from
Glaze is precipitated, and effectively promotes the whiteness of ground coat enamel.In the present invention, ZrO2Content be 0-5%, preferably 2-5%, further preferably
For 2-4%.
Reducing ZrO2In the case where content, ground coat enamel of the invention improves Al2O3Content；Al2O3Firing temperature is higher,
After firing, still it is present among ground coat enamel in the form of crystal, effectively improves glaze whiteness；Therefore there is part substitution ZrO2's
Effect.
In order to give full play to ZrO2Effect, introduce B in ground coat enamel of the invention2O3With ZnO；B2O3It can be used as mineralizer,
At high temperature, zirconium-containing compound in glaze is promoted to promote glaze whiteness with the precipitation of zircon crystal form.ZnO at high temperature can
Increase the generation of zircon nucleus, forms a large amount of small zircon crystal grain, promote glaze whiteness.In the present invention, B2O3Contain
Amount is 1-3%, preferably 1-2%；The B crossed2O3Glaze high temperature viscosity can be greatly reduced, so that zircon dissolution of crystals, drop
Low whiteness；The content of ZnO is 4-6%, excessive ZnO meeting and Al2O3It reacts, forms gahnite, it is white to reduce glaze
Degree.
In addition, by the part ZnO instead of MgO and CaO；Al is improved simultaneously2O3Content, can reduce in glaze layer
The formation of diopside promotes the formation of zircon, promotes whiteness.
Under the comprehensive adjustment of the above means, ground coat enamel of the invention in the case where not containing zirconium, whiteness after firing >=
65%, after adding zirconium-containing material, whiteness is further promoted, and maximum whiteness is not less than 85%.Traditional ground coat enamel, to reach
To whiteness 65%, zirconia content at least needs 6-15%；And traditional ground coat enamel is after adding a large amount of zirconium oxides (25%), it is maximum
Whiteness still < 78%.The present invention effectively reduces the content of zirconium, saves production cost.
Al2O3ZrO can partially be substituted2, but it also improves the firing temperature of ground coat enamel；In order to keep ground coat enamel of the invention
Reasonable firing range.Present invention adds alkali metal (Na2O、K2O), alkaline-earth metal (CaO, MgO, BaO) and B2O3；It is logical
Cross regulation Al2O3/(Na2O+K2O+BaO+ZnO ratio) is 0.7-1.6 and B2O3Content, effectively reduce bottom of the present invention
The firing temperature of glaze.
Specifically, in chemical component of the invention, K2O and Na2O can be effectively reduced the high temperature viscosity of ground coat enamel, promote bottom
The temperature flowing of glaze；But excessively high K2O and Na2O can make zircon dissolve, and not precipitate crystal, and reduce glaze whiteness.Therefore this
Content both in invention is respectively as follows: Na2O 2-5%, K2O 2-5%, preferably Na2O 3-5%, K2O 3-5%；Na2O with
K2It the content of O and should be less than 9%, to control suitable high temperature viscosity, reduce firing temperature, while ensuring the whiteness of glaze.
CaO can improve glaze gloss, and anorthite is precipitated, and promote hardness of glaze surface, while also can be used as fluxing agent, reduce glaze
The firing temperature in face, but excessive CaO can make glaze turn to be yellow, and reduce whiteness；In the present invention, the content of CaO is 0.1-
0.5%, preferably 0.1-0.3%.
BaO can be effectively reduced glaze firing temperature, improve the quality of glaze layer；In the present invention, the content of BaO is 8-
10%；ZnO also has the function of fluxing as alkaline metal oxide.
In order to rationally control firing temperature and high temperature viscosity, Al should be controlled2O3/(Na2O+K2It O+BaO+ZnO) is 0.7-
1.6, preferably 0.8-1.35.
By jointly controlling for the above means, the firing temperature of ground coat enamel in the present invention may make to control at 1120-1300 DEG C,
Preferred control is at 1180-1250 DEG C, suitable for various types Shi ceramic tile, the decoration of Imitation Rock Porcelain Tiles.
In addition, B2O3Introducing will cause the raising of the glaze coefficient of expansion, influence body and glaze associativity, therefore need to control B2O3/
(Na2O+K2It O) is 0.1-0.5, the body and glaze associativity of preferably 0.2-0.4, the glaze of this proportional region are good.
Preferably, the chemical component of ground coat enamel of the present invention is according to percent by weight are as follows: Al2O318-22%, SiO2 55-
60%, CaO 0.1-0.3%, MgO 0.01-0.1%, Na2O 3-5%, K2O 3-5%, ZrO22-4%, BaO 8-10%,
ZnO 4-6%, Fe2O30.01-0.05%, B2O31-2%.The ground coat enamel items good properties of this chemical component, whiteness are high.
It is further preferred that the chemical component of ground coat enamel of the present invention is calculated as Al according to weight percent2O319.4%, SiO2
55.41%, CaO 0.15%, MgO 0.05%, Na2O 3.15%, K2O 4.2%, ZrO22.32%, BaO 9.2%, ZnO
4.25%, Fe2O30.02%, B2O31.85%；The whiteness of the glaze of this proportion can reach 70 degree or more.
Ground coat enamel in the present invention is made of the raw material of following weight parts: 5-20 parts of kaolin, 2-5 parts quartzy, aluminium oxide 1-
10 parts, 0.1-3 parts of wollastonite, talcum 0.1-1 parts of burning, 10-35 parts of potassium feldspar, 10-20 parts of albite, 1-5 parts of zinc oxide, silicic acid
0.5-5 parts of zirconium, 5-15 parts of barium carbonate, 0.5-3 parts of boric acid.
Wherein, the aluminium oxide selects low calcined alumina, and average grain diameter is 1.0-50 μm；Specific surface area is 7.0-
10.0m2/g；Preferably, average grain diameter is 1.0-10.0 μm；Specific surface area is 9-10m2/g；This low calcined alumina is being burnt
At rear non-fusible, such aluminium oxide does not melt in sintering process, can be present among glaze with crystal form, has and replaces
Zirconium oxide promotes the effect of glaze whiteness.
The average grain diameter of zirconium silicate is 5-10 μm, and the zirconium silicate of this particle size range has good milkiness effect, is promoted white
Degree.
Preferably, the ground coat enamel in the present invention is made of the raw material of following weight parts: 5-10 parts of kaolin, 2-5 parts quartzy, oxygen
Aluminium 3-8 parts of change, 0.1-1 parts of wollastonite, talcum 0.1-0.5 parts of burning, 10-25 parts of potassium feldspar, 10-20 parts of albite, zinc oxide 3-5
Part, 0.5-2 parts of zirconium silicate, 10-15 parts of barium carbonate, 0.5-2 parts of boric acid.
Correspondingly, also disclosing a kind of preparation method of above-mentioned high whiteness ground coat enamel in the present invention comprising:
(1) various raw materials are mixed, aquation is added and starches to obtain slurry；
Preferably, step (1) includes:
(1.1) edge runner is respectively adopted in quartz, potassium feldspar, albite and is crushed to 80-100 mesh, remove iron；
(1.2) quartz, potassium feldspar, albite are mixed with other raw materials, aquation is added and starches to obtain slurry；
Wet process is carried out except the de-ironing efficiency of iron is low to glaze；Therefore the present invention hard raw material more for iron content (quartz,
Potassium feldspar, albite) use deferrization of dry process；But due to the preservation dispersion in iron, titanium in the feed, only to initial stone shape raw material
(10-100mm) carries out deferrization of dry process, low efficiency.Hard raw material is crushed to after 80-100 mesh except iron, de-ironing efficiency by the present invention
It is substantially improved.In addition, the time of ball milling is also greatly shortened in preliminary crushing hard material, energy consumption is reduced.It is right before ball milling
Hard raw material be tentatively crushed, and required equipment is simple, and feasibility is high.
(2) by the sizing material iron removing；
(3) ball mill is added in the slurry, is milled to 250 sieves and tails over < 0.1%；Obtain the high whiteness ground coat enamel at
Product.
Preferably, in step (3), the specific gravity of the high whiteness ground coat enamel is 1.9g/mL, flow velocity 25-35s.
To sum up, firstly, the present invention is by the control for ground coat enamel chemical component, high whiteness is effectively realized；Reduce and contains
The usage amount of zirconium raw material；Reduce production cost.Secondly, by the control for alkalinous metal content, so that ground coat enamel of the present invention
Firing temperature it is reasonable, can be suitable for various Shi Imitation Rock Porcelain Tiles, Imitation Rock Porcelain Tiles decoration；Meanwhile body and glaze associativity is excellent.Most
Afterwards, by, using graded crushing, the technique of graded deferrization, effectively improving de-ironing efficiency, it is ensured that ground coat enamel is white to different material
It spends higher.
With specific embodiment, the present invention is further explained below:
Embodiment 1
Ground coat enamel chemical component
Al2O325%, SiO255%, CaO 0.5%, MgO 0.1%, Na2O 2.39%, K2O 2%, BaO 8%,
ZnO 6%, Fe2O30.01%, B2O31%；
Ground coat enamel formula are as follows:
5 parts of kaolin, 5 parts of quartz, 10 parts of aluminium oxide, 3 parts of wollastonite, 1 part of talcum of burning, 10 parts of potassium feldspar, albite 10
Part, 5 parts of zinc oxide, 10 parts of barium carbonate, 0.5 part of boric acid.
The preparation method of ground coat enamel:
(1) various raw materials are mixed, aquation is added and starches to obtain slurry；
Wherein, step (1) includes:
(1.1) edge runner is respectively adopted in quartz, potassium feldspar, albite and is crushed to 80 mesh, remove iron；
(1.2) quartz, potassium feldspar, albite are mixed with other raw materials, aquation is added and starches to obtain slurry；
(2) by the sizing material iron removing；
(3) ball mill is added in the slurry, is milled to 250 sieves and tails over < 0.1%；Obtain the high whiteness ground coat enamel at
Product.
Embodiment 2
Ground coat enamel chemical component
Al2O318%, SiO258%, CaO 0.1%, MgO 0.01%, Na2O 2.5%, K2O 2.1%, ZrO2
4%, BaO 8%, ZnO 4.28%, Fe2O30.01%, B2O33%；
Ground coat enamel formula are as follows:
20 parts of kaolin, 2 parts of quartz, 0.1 part of wollastonite, burns 0.1 part of talcum, 10 parts of potassium feldspar, sodium is long by 1 part of aluminium oxide
15 parts of stone, 5 parts of zinc oxide, 5 parts of zirconium silicate, 11 parts of barium carbonate, 2 parts of boric acid.
The preparation method of ground coat enamel:
(1) various raw materials are mixed, aquation is added and starches to obtain slurry；
Wherein, step (1) includes:
(1.1) edge runner is respectively adopted in quartz, potassium feldspar, albite and is crushed to 100 mesh, remove iron；
(1.2) quartz, potassium feldspar, albite are mixed with other raw materials, aquation is added and starches to obtain slurry；
(2) by the sizing material iron removing；
(3) ball mill is added in the slurry, is milled to 250 sieves and tails over < 0.1%；Obtain the high whiteness ground coat enamel at
Product.
Embodiment 3
Ground coat enamel chemical component
Al2O320%, SiO257%, CaO 0.1%, MgO 0.02%, Na2O 3%, K2O 2.15%, ZrO2
2.9%, BaO 8.3%, ZnO 4.4%, Fe2O30.03%, B2O31.1%；
Ground coat enamel formula are as follows:
15 parts of kaolin, 3 parts of quartz, 0.1 part of wollastonite, burns 0.2 part of talcum, 19 parts of potassium feldspar, sodium is long by 4 parts of aluminium oxide
15 parts of stone, 4.2 parts of zinc oxide, 1.7 parts of zirconium silicate, 11.5 parts of barium carbonate, 0.9 part of boric acid.
The preparation method of ground coat enamel:
(1) various raw materials are mixed, aquation is added and starches to obtain slurry；
Wherein, step (1) includes:
(1.1) edge runner is respectively adopted in quartz, potassium feldspar, albite and is crushed to 90 mesh, remove iron；
(1.2) quartz, potassium feldspar, albite are mixed with other raw materials, aquation is added and starches to obtain slurry；
(2) by the sizing material iron removing；
(3) ball mill is added in the slurry, is milled to 250 sieves and tails over < 0.1%；Obtain the high whiteness ground coat enamel at
Product.
Embodiment 4
Ground coat enamel chemical component
Al2O323%, SiO255.2%, CaO 0.2%, MgO 0.05%, Na2O 2.6%, K2O 2.2%, ZrO2
2.5%, BaO 8.1%, ZnO 4.6%, Fe2O30.05%, B2O31.5%；
Ground coat enamel formula are as follows:
8 parts of kaolin, 5 parts of quartz, 7 parts of aluminium oxide, 0.2 part of wollastonite, 0.1 part of talcum of burning, 16 parts of potassium feldspar, albite
15 parts, 4.8 parts of zinc oxide, 1.8 parts of zirconium silicate, 12 parts of barium carbonate, 1 part of boric acid.
The preparation method of ground coat enamel is same as Example 3.
Embodiment 5
Ground coat enamel chemical component
Al2O319.4%, SiO255.41%, CaO 0.15%, MgO 0.05%, Na2O 3.15%, K2O 4.2%,
ZrO22.32%, BaO 9.2%, ZnO 4.25%, Fe2O30.05%, B2O31.8%；
Ground coat enamel formula are as follows:
9 parts of kaolin, 4 parts of quartz, 6 parts of aluminium oxide, 0.2 part of wollastonite, 0.1 part of talcum of burning, 22 parts of potassium feldspar, albite
19 parts, 4.5 parts of zinc oxide, 2 parts of zirconium silicate, 14 parts of barium carbonate, 1.6 parts of boric acid.
The preparation method of ground coat enamel is same as Example 3.
Embodiment 6
Ground coat enamel chemical component
Al2O319.4%, SiO255.41%, CaO 0.15%, MgO 0.05%, Na2O 3.15%, K2O 4.2%,
ZrO22.32%, BaO 9.2%, ZnO 4.25%, Fe2O30.01%, B2O31.86%；
Ground coat enamel formula are as follows:
9 parts of kaolin, 4 parts of quartz, 6 parts of aluminium oxide, 0.2 part of wollastonite, 0.1 part of talcum of burning, 22 parts of potassium feldspar, albite
19 parts, 4.5 parts of zinc oxide, 2 parts of zirconium silicate, 14 parts of barium carbonate, 1.6 parts of boric acid.
Preparation method:
(1) various raw materials are mixed, aquation is added and starches to obtain slurry；
(2) by the sizing material iron removing；
(3) ball mill is added in the slurry, is milled to 250 sieves and tails over < 0.1%；Obtain the high whiteness ground coat enamel at
Product.
Ground coat enamel in embodiment 1-6 is applied to Ceramic Tiles green body, and is burnt at 1200 DEG C；And its whiteness is surveyed
Examination；Itself the result is as follows:
To sum up, the ground coat enamel in the present invention, in the case where not containing zirconium oxide, whiteness can reach 65%；It is few in addition
After measuring zirconium oxide, whiteness is substantially improved.Present invention reduces the usage amounts of zirconium-containing material, reduce production cost, also ensure
Every property of ground coat enamel is normal, can be suitably used for the decoration of various types Ceramic Tiles.
The above disclosure is only the preferred embodiments of the present invention, cannot limit the right model of the present invention with this certainly
It encloses, therefore equivalent changes made in accordance with the claims of the present invention, is still within the scope of the present invention.
Claims (10)
1. a kind of high whiteness ground coat enamel, which is characterized in that its chemical component is according to percent by weight are as follows: Al2O318-25%,
SiO255-62%, CaO 0.1-0.5%, MgO 0.01-0.1%, Na2O 2-5%, K2O 2-5%, ZrO20-5%, BaO
8-10%, ZnO 4-6%, Fe2O30.01-0.05%, B2O31-3%；
Wherein, Al2O3/(Na2O+K2It O+BaO+ZnO) is 0.7-1.6；B2O3/(Na2O+K2It O) is 0.1-0.5.
2. high whiteness ground coat enamel as described in claim 1, which is characterized in that its chemical component is according to percent by weight are as follows:
Al2O318-22%, SiO255-60%, CaO 0.1-0.3%, MgO 0.01-0.1%, Na2O 3-5%, K2O 3-5%,
ZrO22-5%, BaO 8-10%, ZnO 4-6%, Fe2O30.01-0.05%, B2O31-2%.
3. high whiteness ground coat enamel as claimed in claim 2, which is characterized in that the firing temperature of the high whiteness ground coat enamel is 1120-
1300 DEG C, whiteness >=65% after firing.
4. high whiteness ground coat enamel as claimed in claim 3, which is characterized in that the firing temperature of the high whiteness ground coat enamel is 1180-
1250 DEG C, whiteness >=85% after firing.
5. high whiteness ground coat enamel as described in claim 1, which is characterized in that it is made of the raw material of following weight parts: kaolin
It is 5-20 parts, 2-5 parts quartzy, 1-10 parts of aluminium oxide, 0.1-3 parts of wollastonite, talcum 0.1-1 parts is burnt, 10-35 parts of potassium feldspar, sodium is long
10-20 parts of stone, 1-5 parts of zinc oxide, 0-5 parts of zirconium silicate, 5-15 parts of barium carbonate, 0.5-3 parts of boric acid.
6. high whiteness ground coat enamel as claimed in claim 5, which is characterized in that it is made of the raw material of following weight parts: kaolin
It is 5-10 parts, 2-5 parts quartzy, 3-8 parts of aluminium oxide, 0.1-1 parts of wollastonite, talcum 0.1-0.5 parts is burnt, 10-25 parts of potassium feldspar, sodium is long
10-20 parts of stone, 3-5 parts of zinc oxide, 0.5-2 parts of zirconium silicate, 10-15 parts of barium carbonate, 0.5-2 parts of boric acid.
7. high whiteness ground coat enamel as claimed in claim 6, which is characterized in that the aluminium oxide is low calcined alumina, is averaged
Partial size is 1.0-50 μm；Specific surface area is 7.0-10.0m2/g；
The average grain diameter of the zirconium silicate is 5-10 μm；
In the kaolin, Fe2O3Content < 0.5wt%.
8. a kind of preparation method of such as described in any item high whiteness ground coat enamels of claim 1-7 characterized by comprising
(1) various raw materials are mixed, aquation is added and starches to obtain slurry；
(2) by the sizing material iron removing；
(3) ball mill is added in the slurry, is milled to 250 sieves and tails over < 0.1%；Obtain the high whiteness ground coat enamel finished product.
9. the preparation method of high whiteness ground coat enamel as claimed in claim 8, which is characterized in that step (1) includes:
(1.1) edge runner is respectively adopted in quartz, potassium feldspar, albite and is crushed to 80-100 mesh, remove iron；
(1.2) quartz, potassium feldspar, albite are mixed with other raw materials, aquation is added and starches to obtain slurry.
10. the preparation method of high whiteness ground coat enamel as claimed in claim 8, which is characterized in that in step (3), the high whiteness
The specific gravity of ground coat enamel is 1.9g/mL, flow velocity 25-35s.
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