CN115677218A - Electroceramic brown glaze formula suitable for being fired in tunnel kiln and manufacturing method thereof - Google Patents
Electroceramic brown glaze formula suitable for being fired in tunnel kiln and manufacturing method thereof Download PDFInfo
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- CN115677218A CN115677218A CN202211387822.0A CN202211387822A CN115677218A CN 115677218 A CN115677218 A CN 115677218A CN 202211387822 A CN202211387822 A CN 202211387822A CN 115677218 A CN115677218 A CN 115677218A
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- 238000004519 manufacturing process Methods 0.000 title claims description 23
- 229910052573 porcelain Inorganic materials 0.000 claims abstract description 108
- 239000002994 raw material Substances 0.000 claims abstract description 31
- 239000010453 quartz Substances 0.000 claims abstract description 20
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 20
- 239000000843 powder Substances 0.000 claims abstract description 18
- 239000002689 soil Substances 0.000 claims abstract description 11
- 239000010433 feldspar Substances 0.000 claims abstract description 10
- 238000000034 method Methods 0.000 claims abstract description 10
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 claims abstract description 8
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 claims abstract description 8
- 239000000454 talc Substances 0.000 claims abstract description 8
- 229910052623 talc Inorganic materials 0.000 claims abstract description 8
- 239000010456 wollastonite Substances 0.000 claims abstract description 8
- 229910052882 wollastonite Inorganic materials 0.000 claims abstract description 8
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims abstract description 7
- 229910052804 chromium Inorganic materials 0.000 claims abstract description 7
- 239000011651 chromium Substances 0.000 claims abstract description 7
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 claims abstract description 6
- 239000002245 particle Substances 0.000 claims abstract description 6
- 229940072033 potash Drugs 0.000 claims abstract description 6
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Substances [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 claims abstract description 6
- 235000015320 potassium carbonate Nutrition 0.000 claims abstract description 6
- 238000001354 calcination Methods 0.000 claims abstract description 3
- 239000002002 slurry Substances 0.000 claims description 36
- 238000010304 firing Methods 0.000 claims description 29
- 238000010438 heat treatment Methods 0.000 claims description 28
- 238000000498 ball milling Methods 0.000 claims description 16
- 238000001816 cooling Methods 0.000 claims description 14
- 238000001035 drying Methods 0.000 claims description 12
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 10
- 238000000227 grinding Methods 0.000 claims description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 8
- 230000005484 gravity Effects 0.000 claims description 7
- 238000007873 sieving Methods 0.000 claims description 7
- 235000012222 talc Nutrition 0.000 claims description 7
- 238000005303 weighing Methods 0.000 claims description 7
- 230000018044 dehydration Effects 0.000 claims description 6
- 238000006297 dehydration reaction Methods 0.000 claims description 6
- 238000001238 wet grinding Methods 0.000 claims description 6
- 239000000919 ceramic Substances 0.000 claims description 5
- 229910052742 iron Inorganic materials 0.000 claims description 5
- 238000003825 pressing Methods 0.000 claims description 4
- 238000012216 screening Methods 0.000 claims description 4
- 238000002791 soaking Methods 0.000 claims description 2
- 239000012212 insulator Substances 0.000 description 14
- 238000007598 dipping method Methods 0.000 description 5
- 238000012360 testing method Methods 0.000 description 5
- YOBAEOGBNPPUQV-UHFFFAOYSA-N iron;trihydrate Chemical compound O.O.O.[Fe].[Fe] YOBAEOGBNPPUQV-UHFFFAOYSA-N 0.000 description 4
- DLHONNLASJQAHX-UHFFFAOYSA-N aluminum;potassium;oxygen(2-);silicon(4+) Chemical compound [O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[Al+3].[Si+4].[Si+4].[Si+4].[K+] DLHONNLASJQAHX-UHFFFAOYSA-N 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 238000011085 pressure filtration Methods 0.000 description 2
- 239000005995 Aluminium silicate Substances 0.000 description 1
- 241000227425 Pieris rapae crucivora Species 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 235000012211 aluminium silicate Nutrition 0.000 description 1
- 229910001570 bauxite Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 235000010755 mineral Nutrition 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
Classifications
-
- 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/60—Production of ceramic materials or ceramic elements, e.g. substitution of clay or shale by alternative raw materials, e.g. ashes
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- Compositions Of Oxide Ceramics (AREA)
Abstract
The invention discloses an electroceramic brown glaze formula suitable for being fired in a tunnel kiln, which comprises the following raw materials in parts by mass: 20-40 parts of potash feldspar, 10-20 parts of quartz, 5-15 parts of Yichun soil, 5-18 parts of Jiepai mud, 1-5 parts of talc, 2-8 parts of wollastonite, 5-20 parts of porcelain powder, 5-20 parts of blank mud, 1-5 parts of iron oxide red, 3-8 parts of manganese powder and 1-8 parts of green chromium, wherein the quartz is powdery and is high-purity porous quartz powder with the particle size of 1-0.9 mu m, and the quartz powder is prepared by calcining crops at 900-1100 ℃, and the burning vector of the Yichun soil is 4-6%. The brown glaze produced by the method can effectively improve the porcelain strength of the brown glaze by more than 30 percent.
Description
Technical Field
The invention relates to the technical field of preparation of electric porcelain brown glaze, in particular to a formula of electric porcelain brown glaze suitable for being fired in a tunnel kiln and a manufacturing method thereof.
Background
Electrical ceramics is called electroceramic for short. Broadly, the term electroceramic encompasses a variety of electrotechnical ceramic articles, including insulating ceramics, semiconducting ceramics, and the like. The electric porcelain is only a porcelain insulator which is prepared by firing natural minerals such as bauxite, kaolin, feldspar and the like serving as main raw materials at high temperature and is applied to a power industrial system, and comprises various line insulators, insulators for power station electric appliances and insulating parts for isolating or supporting other charged bodies. The electric porcelain is an important basic device in the power industry, and the electric porcelain manufacturing industry is the basic industry of national economy. Generally classified according to the product shape, voltage class, and application environment of the electric porcelain. The method can be divided into the following steps according to the shape of the product: disc-shaped suspension insulators, pin insulators, rod insulators, hollow insulators, and the like; the voltage classes can be divided into: low-voltage (AC 1000V and below, DC 1500V and below) insulator and high-voltage (AC 1000V and above, DC 1500V) insulator, wherein the high-voltage insulator has extra-high voltage (AC 330kV and 500kV, DC 500 kV) and extra-high voltage (AC 750kV and 1000kV, DC 800 kV) in addition; according to the use characteristics can be divided into: insulators for lines, power stations, or electric appliances; the insulator can be divided into an indoor insulator, an outdoor insulator and the like according to the using environment.
The surface of the existing electric porcelain is usually coated with electric porcelain glaze, and the electric porcelain glaze refers to glaze applied to the surface of a blank body of an electric porcelain product. The common glaze comprises high-temperature feldspar glaze, semiconductor glaze, glaze for bonding and trademark glaze, can improve the electrical property, mechanical strength and chemical stability of the electric porcelain, and can make the surface of the porcelain smooth and beautiful and be convenient for cleaning. For the electric porcelain with the surface coated with the brown glaze, the production of the electric porcelain has a long time, more manufacturers exist, more glaze formulas are arranged outside the electric porcelain, and a plurality of relatively excellent glaze formulas are developed, so that the requirements of production and the like can be basically met, but the electric porcelain has the advantages and the disadvantages, and the requirements of actual comprehensive performance cannot be met in the aspects of self-cleaning property, no water absorption, bright appearance, impact resistance and low cost.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides an electroceramic brown glaze formula suitable for being fired in a tunnel kiln and a manufacturing method thereof.
(II) technical scheme
In order to achieve the purpose, the invention provides the following technical scheme: the electric porcelain brown glaze formula suitable for being fired in a tunnel kiln comprises the following raw materials in parts by mass: 20-40 parts of potash feldspar, 10-20 parts of quartz, 5-15 parts of Yichun soil, 5-18 parts of Jiepai mud, 1-5 parts of talcum, 2-8 parts of wollastonite, 5-20 parts of porcelain powder, 5-20 parts of blank mud, 1-5 parts of iron oxide red, 3-8 parts of manganese powder and 1-8 parts of green chromium.
Preferably, the quartz is powdery, high-purity porous quartz powder with the grain diameter of 1-0.9 μm is prepared by calcining crops at 900-1100 ℃.
Preferably, the firing vector of the Yichun soil is 4% -6%.
The manufacturing method of the brown glaze formula of the electric porcelain suitable for being fired in the tunnel kiln comprises the following steps:
s1: weighing a proper amount of raw materials, firstly carrying out coarse crushing by using a jaw crusher, then carrying out fine crushing by using a hammer crusher, then carrying out coarse grinding, then putting the raw materials into a ball mill for wet grinding, sieving the ground slurry by using a 200-mesh sieve, carrying out filter pressing dehydration, and then drying for 4-8h at 120 ℃ to obtain a pretreated raw material;
s2: placing the raw material obtained after the pretreatment in the step S1 in the ball mill again, and adding water for ball milling;
s3: then, screening the slurry obtained after ball milling to obtain an electroceramic brown glaze slurry;
s4: glazing the surface of the porcelain blank by using the glaze slurry obtained in the step S3 to obtain a glazed porcelain blank;
s5: and (5) placing the porcelain blank glazed in the step (S4) into a glaze firing furnace for glaze firing, and naturally cooling to room temperature to obtain the siliceous brown glaze electric porcelain.
Preferably, the glazing treatment method comprises the following steps: and (3) soaking the porcelain blank in the glaze slurry for 2-4s, and after the surface of the porcelain blank is dried, performing secondary glazing on the end part of the blank.
Preferably, in the S3, iron removal treatment is required, and the screen residue is less than 0.05%.
Preferably, in the S2, the ball milling time is 2-5 h.
Preferably, the specific gravity of the glaze slip glazed in the S4 is 40-50 DEG Be, and the glazing thickness is 0.2-0.3 mm.
Preferably, in S5, the firing step is as follows:
the first stage is as follows: empty burning in the furnace, heating from normal temperature to 100 ℃ for 50min;
and a second stage: placing the glazed blank in a furnace, heating from 100 ℃ to 300 ℃ for 50min;
and a third stage: heating from 300 deg.C to 1000 deg.C for 180min;
a fourth stage: heating from 1000 deg.C to 1250 deg.C for 300min;
the fifth stage: keeping the temperature at 1250 ℃ for 10 minutes for 20min;
the sixth stage: extinguishing the fire and cooling to room temperature.
(III) advantageous effects
Compared with the prior art, the invention provides the electro-porcelain brown glaze formula suitable for being fired in the tunnel kiln and the manufacturing method thereof, and the electro-porcelain brown glaze formula has the following beneficial effects:
1. according to the brown glaze formula of the electric porcelain suitable for being fired in the tunnel kiln and the manufacturing method thereof, the brown electric porcelain in the electric porcelain production is insufficient in strength, the unglazed test strip of the plain porcelain is 95MPa in strength, and the brown test strip is 100MPa in strength. The strength of the porcelain is improved by only about 5 percent. The strength of the test strip of the common white glaze can reach more than 120 MPa. The produced electric porcelain can pass electromechanical strength experiments on white porcelain, but cannot pass electromechanical strength experiments on brown porcelain. The brown glaze formula can effectively improve the porcelain strength of the brown glaze by more than 30 percent.
2. According to the electric porcelain brown glaze formula suitable for being fired in a tunnel kiln and the manufacturing method thereof, the green body pug and the porcelain powder are added into the brown glaze formula to enable the glaze and the blank to be close in composition, and the combination of the blank glaze is more compact during firing.
3. According to the electric porcelain brown glaze formula suitable for being fired in the tunnel kiln and the manufacturing method thereof, the porcelain strength of the brown glaze can be effectively improved by using the low-sodium-potassium feldspar in the formula rather than the high-sodium-potassium feldspar.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The first embodiment is as follows:
a manufacturing method of an electrotechnical porcelain brown glaze formula suitable for being fired in a tunnel kiln comprises the following steps:
s1: weighing a proper amount of raw materials, wherein the raw materials comprise 20 parts by mass of potash feldspar, 10 parts by mass of powdery high-purity porous quartz powder with the particle size of 1-0.9 mu m, 10 parts by mass of quartz calcined at 900-1100 ℃, 5 parts by mass of Yichun soil with the burning vector of 4-6%, 5 parts by mass of Jiepai mud, 1 part by mass of talc, 2 parts by mass of wollastonite, 5 parts by mass of porcelain powder, 5 parts by mass of blank mud, 1 part by mass of iron red, 3 parts by mass of manganese powder and 1 part by mass of green chromium, coarsely crushing by using a jaw crusher, finely crushing by using a hammer crusher, coarsely grinding, wet grinding in a ball mill, sieving the ground slurry by using a 200-mesh sieve, press-filtering and dehydrating, and drying at 120 ℃ for 4-8 hours to obtain a pretreated raw material;
s2: placing the raw material obtained after the pretreatment in the step S1 in the ball mill again, adding water for ball milling for 2-5 h;
s3: then, screening and deironing the slurry obtained after ball milling, wherein the screen residue is less than 0.05 percent, thus obtaining the electroceramic brown glaze slurry;
s4: glazing the surface of the porcelain blank by using the glaze slurry obtained in the S3, dipping the porcelain blank into the glaze slurry for 2-4S, drying the surface of the porcelain blank, and then glazing the end of the porcelain blank for the second time to obtain a glazed porcelain blank, wherein the specific gravity of the glazed porcelain blank is 40-50 Be, and the glazing thickness is 0.2-0.3 mm;
s5: and (3) placing the porcelain blank glazed in the step (S4) into a glaze firing furnace for glaze firing, and naturally cooling to room temperature to prepare the siliceous brown glaze electric porcelain, wherein the firing step is as follows:
the first stage is as follows: empty burning in the furnace, heating from normal temperature to 100 ℃ for 50min;
and a second stage: placing the glazed blank in a furnace, heating from 100 ℃ to 300 ℃ for 50min;
and a third stage: heating from 300 deg.C to 1000 deg.C for 180min;
a fourth stage: heating from 1000 deg.C to 1250 deg.C for 300min;
the fifth stage: keeping the temperature at 1250 ℃ for 10 minutes for 20min;
and a sixth stage: extinguishing the fire and cooling to room temperature.
Example two:
the manufacturing method of the brown glaze formula of the electric porcelain suitable for being fired in the tunnel kiln comprises the following steps:
s1: weighing a proper amount of raw materials, wherein the raw materials comprise 24 parts of potassium feldspar by mass, powdery high-purity porous quartz powder with the particle size of 1-0.9 mu m, 13 parts of quartz calcined at 900-1100 ℃, 7 parts of Yichun soil with the burning vector of 4-6%, 7 parts of Jiepai mud, 2 parts of talcum, 3 parts of wollastonite, 7 parts of porcelain powder, 7 parts of blank mud, 1.5 parts of iron red, 4 parts of manganese powder and 1.5 parts of green chromium, coarsely crushing by using a jaw crusher, finely crushing by using a hammer crusher, coarsely grinding, wet-grinding in a ball mill, sieving the ground slurry by using a 200-mesh sieve, performing pressure filtration and dehydration, and drying at 120 ℃ for 4-8 hours to obtain a pretreated raw material;
s2: placing the raw material obtained after the pretreatment in the step S1 in the ball mill again, adding water for ball milling for 2-5 h;
s3: then, the slurry obtained after ball milling is sieved to remove iron, and the screened residue is less than 0.05 percent to obtain the electroceramic brown glaze slurry;
s4: glazing the surface of the porcelain blank by using the glaze slurry obtained in the S3, dipping the porcelain blank into the glaze slurry for 2-4S, drying the surface of the porcelain blank, and then glazing the end of the porcelain blank for the second time to obtain a glazed porcelain blank, wherein the specific gravity of the glazed porcelain blank is 40-50 Be, and the glazing thickness is 0.2-0.3 mm;
s5: and (3) placing the porcelain blank glazed in the step (S4) into a glaze firing furnace for glaze firing, and naturally cooling to room temperature to prepare the siliceous brown glaze electric porcelain, wherein the firing step is as follows:
the first stage is as follows: empty burning in the furnace, heating from normal temperature to 100 ℃ for 50min;
and a second stage: placing the glazed blank in a furnace, heating from 100 ℃ to 300 ℃ for 50min;
and a third stage: heating from 300 deg.C to 1000 deg.C for 180min;
a fourth stage: heating from 1000 deg.C to 1250 deg.C for 300min;
the fifth stage: keeping the temperature at 1250 ℃ for 10 minutes for 20min;
the sixth stage: extinguishing the fire and cooling to room temperature.
Example three:
the manufacturing method of the brown glaze formula of the electric porcelain suitable for being fired in the tunnel kiln comprises the following steps:
s1: weighing a proper amount of raw materials, wherein the raw materials comprise 26 parts by mass of potash feldspar, powdery high-purity porous quartz powder with the particle size of 1-0.9 mu m, 15 parts of quartz calcined at 900-1100 ℃, 9 parts of Yichun soil with the burning vector of 4-6%, 12 parts of Jiepai mud, 3 parts of talcum, 5 parts of wollastonite, 10 parts of porcelain powder, 10 parts of blank mud, 2 parts of iron red, 6 parts of manganese powder and 2 parts of green, coarsely crushing by using a jaw crusher, finely crushing by using a hammer crusher, coarsely grinding, wet-grinding in a ball mill, sieving the ground slurry by using a 200-mesh sieve, performing filter pressing and dehydration, and drying at 120 ℃ for 4-8 hours to obtain a pretreated raw material;
s2: placing the raw material obtained after the pretreatment in the step S1 in the ball mill again, adding water for ball milling for 2-5 h;
s3: then, the slurry obtained after ball milling is sieved to remove iron, and the screened residue is less than 0.05 percent to obtain the electroceramic brown glaze slurry;
s4: glazing the surface of the porcelain blank by using the glaze slurry obtained in the S3, dipping the porcelain blank into the glaze slurry for 2-4S, drying the surface of the porcelain blank, and then glazing the end of the porcelain blank for the second time to obtain a glazed porcelain blank, wherein the specific gravity of the glazed porcelain blank is 40-50 Be, and the glazing thickness is 0.2-0.3 mm;
s5: and (3) placing the porcelain blank glazed in the step (S4) into a glaze firing furnace for glaze firing, and naturally cooling to room temperature to prepare the siliceous brown glaze electric porcelain, wherein the firing step is as follows:
the first stage is as follows: empty burning in the furnace, heating from normal temperature to 100 ℃ for 50min;
and a second stage: placing the glazed blank in a furnace, heating from 100 ℃ to 300 ℃ for 50min;
and a third stage: heating from 300 deg.C to 1000 deg.C for 180min;
a fourth stage: heating from 1000 deg.C to 1250 deg.C for 300min;
the fifth stage: keeping the temperature at 1250 ℃ for 10 minutes for 20min;
the sixth stage: extinguishing the fire and cooling to room temperature.
Example four:
the manufacturing method of the brown glaze formula of the electric porcelain suitable for being fired in the tunnel kiln comprises the following steps:
s1: weighing a proper amount of raw materials, including 30 parts by mass of potash feldspar, powdery high-purity porous quartz powder with the grain size of 1-0.9 mu m, 17 parts of quartz calcined at 900-1100 ℃, 11 parts of yichun soil with the burning vector of 4-6%, 15 parts of Jiepai mud, 4 parts of talcum, 6 parts of wollastonite, 12 parts of porcelain powder, 12 parts of blank mud, 3 parts of iron oxide red, 7 parts of manganese powder and 5 parts of green chromium, coarsely crushing by using a jaw crusher, finely crushing by using a hammer crusher, coarsely grinding, wetly grinding in a ball mill, sieving the ground slurry by using a 200-mesh sieve, performing filter pressing and dehydration, and drying at 120 ℃ for 4-8 hours to obtain a pretreated raw material;
s2: placing the raw material obtained after the pretreatment in the step S1 in the ball mill again, adding water for ball milling for 2-5 h;
s3: then, the slurry obtained after ball milling is sieved to remove iron, and the screened residue is less than 0.05 percent to obtain the electroceramic brown glaze slurry;
s4: glazing the surface of the porcelain blank by using the glaze slurry obtained in the S3, dipping the porcelain blank into the glaze slurry for 2-4S, drying the surface of the porcelain blank, and then glazing the end of the porcelain blank for the second time to obtain a glazed porcelain blank, wherein the specific gravity of the glazed porcelain blank is 40-50 Be, and the glazing thickness is 0.2-0.3 mm;
s5: and (3) placing the porcelain blank glazed in the step (S4) into a glaze firing furnace for glaze firing, and naturally cooling to room temperature to prepare the siliceous brown glaze electric porcelain, wherein the firing step is as follows:
the first stage is as follows: empty burning in the furnace, heating from normal temperature to 100 ℃ for 50min;
and a second stage: placing the glazed blank in a furnace, heating from 100 ℃ to 300 ℃ for 50min;
and a third stage: heating from 300 deg.C to 1000 deg.C for 180min;
a fourth stage: heating from 1000 deg.C to 1250 deg.C for 300min;
and a fifth stage: keeping the temperature at 1250 ℃ for 10 minutes for 20min;
the sixth stage: extinguishing the fire and cooling to room temperature.
Example five:
the manufacturing method of the brown glaze formula of the electric porcelain suitable for being fired in the tunnel kiln comprises the following steps:
s1: weighing a proper amount of raw materials, wherein the raw materials comprise, by mass, 40 parts of potassium feldspar, 20 parts of powdery high-purity porous quartz powder with the particle size of 1-0.9 mu m, 20 parts of quartz calcined at 900-1100 ℃, 15 parts of Yichun soil with the burning vector of 4-6%, 18 parts of Jiepai mud, 5 parts of talcum, 8 parts of wollastonite, 20 parts of porcelain powder, 20 parts of blank mud, 5 parts of iron red, 8 parts of manganese powder and 8 parts of green chromium, coarsely crushing by using a jaw crusher, finely crushing by using a hammer crusher, coarsely grinding, wet-grinding in a ball mill, sieving the ground slurry by using a 200-mesh sieve, performing pressure filtration and dehydration, and drying at 120 ℃ for 4-8 hours to obtain a pretreated raw material;
s2: placing the raw material obtained after the pretreatment in the step S1 in the ball mill again, adding water for ball milling for 2-5 h;
s3: then, screening and deironing the slurry obtained after ball milling, wherein the screen residue is less than 0.05 percent, thus obtaining the electroceramic brown glaze slurry;
s4: glazing the surface of the porcelain blank by using the glaze slurry obtained in the S3, dipping the porcelain blank into the glaze slurry for 2-4S, drying the surface of the porcelain blank, and then glazing the end of the porcelain blank for the second time to obtain a glazed porcelain blank, wherein the specific gravity of the glazed porcelain blank is 40-50 Be, and the glazing thickness is 0.2-0.3 mm;
s5: and (5) placing the porcelain blank glazed in the step (S4) into a glaze firing furnace for glaze firing, and naturally cooling to room temperature to prepare the siliceous brown glaze electric porcelain, wherein the firing step is as follows:
the first stage is as follows: empty burning in the furnace, heating from normal temperature to 100 ℃ for 50min;
and a second stage: placing the glazed blank in a furnace, heating from 100 ℃ to 300 ℃ for 50min;
and a third stage: heating from 300 deg.C to 1000 deg.C for 180min;
a fourth stage: heating from 1000 deg.C to 1250 deg.C for 300min;
the fifth stage: keeping the temperature at 1250 ℃ for 10 minutes for 20min;
and a sixth stage: extinguishing the fire and cooling to room temperature.
Through comparison of five groups of examples and the common glaze, the strength of the test strip of the third example is 131Mpa, the strength is improved by 33.67%, and the strength improvement of the test strips of the examples 1, 2, 4 and 5 are obviously improved.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (9)
1. The electric porcelain brown glaze formula suitable for being fired in a tunnel kiln is characterized by comprising the following raw materials in parts by mass: 20-40 parts of potash feldspar, 10-20 parts of quartz, 5-15 parts of Yichun soil, 5-18 parts of Jiepai mud, 1-5 parts of talcum, 2-8 parts of wollastonite, 5-20 parts of porcelain powder, 5-20 parts of blank mud, 1-5 parts of iron oxide red, 3-8 parts of manganese powder and 1-8 parts of green chromium.
2. The electro-ceramic brown glaze formula suitable for being fired in a tunnel kiln as claimed in claim 1, wherein the quartz is high-purity porous quartz powder with the particle size of 1-0.9 μm, and is prepared by calcining crops at 900-1100 ℃.
3. The electro-porcelain brown glaze formula suitable for being fired in a tunnel kiln as claimed in claim 1, wherein the firing vector of the Yichun soil is 4% -6%.
4. The method for manufacturing the electro-porcelain brown glaze formula suitable for tunnel kiln firing according to claim 1, characterized by comprising the following steps:
s1: weighing a proper amount of raw materials, firstly carrying out coarse crushing by using a jaw crusher, then carrying out fine crushing by using a hammer crusher, then carrying out coarse grinding, then putting the raw materials into a ball mill for wet grinding, sieving the ground slurry by using a 200-mesh sieve, carrying out filter pressing dehydration, and then drying for 4-8h at 120 ℃ to obtain a pretreated raw material;
s2: placing the raw material obtained after the pretreatment in the step S1 in the ball mill again, and adding water for ball milling;
s3: then, screening the slurry obtained after ball milling to obtain an electroceramic brown glaze slurry;
s4: glazing the surface of the porcelain blank by using the glaze slurry obtained in the step S3 to obtain a glazed porcelain blank;
s5: and (5) placing the porcelain blank glazed in the step (S4) into a glaze firing furnace for glaze firing, and naturally cooling to room temperature to obtain the siliceous brown glaze electric porcelain.
5. The method for manufacturing the electro-porcelain brown glaze formula suitable for being fired in the tunnel kiln according to claim 4, wherein the glazing treatment method comprises the following steps: and (3) soaking the porcelain blank in the glaze slurry for 2-4s, and after the surface of the porcelain blank is dried, performing secondary glazing on the end part of the blank.
6. The method for manufacturing the electric porcelain brown glaze formula suitable for tunnel kiln firing according to claim 4, wherein in S3, iron removal treatment is further required, and the screen residue is less than 0.05%.
7. The method for preparing the electric porcelain brown glaze formula suitable for tunnel kiln firing according to claim 4, wherein in S2, the ball milling time is 2-5 h.
8. The method for manufacturing the electric porcelain brown glaze formula suitable for being fired in the tunnel kiln according to claim 4, wherein the glaze slurry glazed in S4 has a specific gravity of 40 degrees Be-50 degrees Be and a glazed thickness of 0.2 mm-0.3 mm.
9. The method for manufacturing the electric porcelain brown glaze formula suitable for tunnel kiln firing according to claim 4, wherein in S5, the firing steps are as follows:
the first stage is as follows: empty burning in the furnace, heating from normal temperature to 100 ℃ for 50min;
and a second stage: placing the glazed blank in a furnace, heating from 100 ℃ to 300 ℃ for 50min;
and a third stage: heating from 300 deg.C to 1000 deg.C for 180min;
a fourth stage: heating from 1000 deg.C to 1250 deg.C for 300min;
the fifth stage: keeping the temperature at 1250 ℃ for 10 minutes for 20min;
the sixth stage: extinguishing the fire and cooling to room temperature.
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