CN109678461B - Low-cost high-strength dolomite pottery body and preparation method thereof - Google Patents
Low-cost high-strength dolomite pottery body and preparation method thereof Download PDFInfo
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- CN109678461B CN109678461B CN201811614349.9A CN201811614349A CN109678461B CN 109678461 B CN109678461 B CN 109678461B CN 201811614349 A CN201811614349 A CN 201811614349A CN 109678461 B CN109678461 B CN 109678461B
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- 239000010459 dolomite Substances 0.000 title claims abstract description 65
- 229910000514 dolomite Inorganic materials 0.000 title claims abstract description 65
- 238000002360 preparation method Methods 0.000 title claims abstract description 15
- 238000010304 firing Methods 0.000 claims abstract description 40
- 239000002002 slurry Substances 0.000 claims abstract description 40
- 239000000463 material Substances 0.000 claims abstract description 37
- 239000000654 additive Substances 0.000 claims abstract description 34
- 230000000996 additive effect Effects 0.000 claims abstract description 34
- 239000002994 raw material Substances 0.000 claims abstract description 29
- 239000004927 clay Substances 0.000 claims abstract description 20
- 239000007788 liquid Substances 0.000 claims abstract description 14
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims abstract description 12
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 12
- 239000010703 silicon Substances 0.000 claims abstract description 12
- 235000019738 Limestone Nutrition 0.000 claims abstract description 10
- NWXHSRDXUJENGJ-UHFFFAOYSA-N calcium;magnesium;dioxido(oxo)silane Chemical compound [Mg+2].[Ca+2].[O-][Si]([O-])=O.[O-][Si]([O-])=O NWXHSRDXUJENGJ-UHFFFAOYSA-N 0.000 claims abstract description 10
- 229910052637 diopside Inorganic materials 0.000 claims abstract description 10
- 239000006028 limestone Substances 0.000 claims abstract description 10
- 229910052903 pyrophyllite Inorganic materials 0.000 claims abstract description 10
- 239000004576 sand Substances 0.000 claims abstract description 10
- 239000002689 soil Substances 0.000 claims abstract description 10
- 239000000454 talc Substances 0.000 claims abstract description 10
- 229910052623 talc Inorganic materials 0.000 claims abstract description 10
- 229940094522 laponite Drugs 0.000 claims abstract description 9
- XCOBTUNSZUJCDH-UHFFFAOYSA-B lithium magnesium sodium silicate Chemical compound [Li+].[Li+].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[Na+].[Na+].[Mg+2].[Mg+2].[Mg+2].[Mg+2].[Mg+2].[Mg+2].[Mg+2].[Mg+2].[Mg+2].[Mg+2].[Mg+2].[Mg+2].[Mg+2].[Mg+2].[Mg+2].[Mg+2].O1[Si](O2)([O-])O[Si]3([O-])O[Si]1([O-])O[Si]2([O-])O3.O1[Si](O2)([O-])O[Si]3([O-])O[Si]1([O-])O[Si]2([O-])O3.O1[Si](O2)([O-])O[Si]3([O-])O[Si]1([O-])O[Si]2([O-])O3.O1[Si](O2)([O-])O[Si]3([O-])O[Si]1([O-])O[Si]2([O-])O3.O1[Si](O2)([O-])O[Si]3([O-])O[Si]1([O-])O[Si]2([O-])O3.O1[Si](O2)([O-])O[Si]3([O-])O[Si]1([O-])O[Si]2([O-])O3 XCOBTUNSZUJCDH-UHFFFAOYSA-B 0.000 claims abstract description 9
- 239000000440 bentonite Substances 0.000 claims abstract description 8
- 229910000278 bentonite Inorganic materials 0.000 claims abstract description 8
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 claims abstract description 8
- 239000002131 composite material Substances 0.000 claims abstract description 8
- 230000004907 flux Effects 0.000 claims abstract description 7
- 229910052573 porcelain Inorganic materials 0.000 claims abstract description 7
- 239000000843 powder Substances 0.000 claims abstract description 6
- 239000002699 waste material Substances 0.000 claims abstract description 6
- 238000005245 sintering Methods 0.000 claims description 36
- 238000000034 method Methods 0.000 claims description 28
- 239000000919 ceramic Substances 0.000 claims description 22
- 230000008569 process Effects 0.000 claims description 17
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 16
- 238000000465 moulding Methods 0.000 claims description 15
- 239000002245 particle Substances 0.000 claims description 9
- 230000032683 aging Effects 0.000 claims description 8
- 238000000498 ball milling Methods 0.000 claims description 8
- 230000018044 dehydration Effects 0.000 claims description 8
- 238000006297 dehydration reaction Methods 0.000 claims description 8
- 238000007599 discharging Methods 0.000 claims description 8
- 229910052742 iron Inorganic materials 0.000 claims description 8
- 238000003801 milling Methods 0.000 claims description 8
- 238000002156 mixing Methods 0.000 claims description 8
- 239000000203 mixture Substances 0.000 claims description 8
- 230000001590 oxidative effect Effects 0.000 claims description 8
- 238000004321 preservation Methods 0.000 claims description 8
- 238000007873 sieving Methods 0.000 claims description 8
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 abstract description 4
- 239000013078 crystal Substances 0.000 abstract description 2
- KZHJGOXRZJKJNY-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Si]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O KZHJGOXRZJKJNY-UHFFFAOYSA-N 0.000 abstract description 2
- 239000011521 glass Substances 0.000 abstract description 2
- 229910052863 mullite Inorganic materials 0.000 abstract description 2
- 230000008901 benefit Effects 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 238000010521 absorption reaction Methods 0.000 description 3
- 238000004134 energy conservation Methods 0.000 description 3
- 239000007791 liquid phase Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 3
- 230000035882 stress Effects 0.000 description 3
- 229910008556 Li2O—Al2O3—SiO2 Inorganic materials 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 2
- 229910052681 coesite Inorganic materials 0.000 description 2
- 229910052906 cristobalite Inorganic materials 0.000 description 2
- 238000006731 degradation reaction Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 238000009776 industrial production Methods 0.000 description 2
- 230000001737 promoting effect Effects 0.000 description 2
- 239000000377 silicon dioxide Substances 0.000 description 2
- 229910052682 stishovite Inorganic materials 0.000 description 2
- 229910052905 tridymite Inorganic materials 0.000 description 2
- 239000002912 waste gas Substances 0.000 description 2
- 239000005995 Aluminium silicate Substances 0.000 description 1
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 241001122767 Theaceae Species 0.000 description 1
- 235000012211 aluminium silicate Nutrition 0.000 description 1
- 238000002468 ceramisation Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000005496 eutectics Effects 0.000 description 1
- 230000002349 favourable effect Effects 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
- 229910052744 lithium Inorganic materials 0.000 description 1
- 238000009766 low-temperature sintering Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000012071 phase Substances 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3205—Alkaline earth oxides or oxide forming salts thereof, e.g. beryllium oxide
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- C04B2235/3427—Silicates other than clay, e.g. water glass
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- C04B2235/3472—Alkali metal alumino-silicates other than clay, e.g. spodumene, alkali feldspars such as albite or orthoclase, micas such as muscovite, zeolites such as natrolite
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Abstract
The invention discloses a low-cost high-strength dolomite pottery body and a preparation method thereof, wherein the dolomite pottery body is formed by firing a base material and an additive in a multi-element composite flux system, the additive is organic silicon nano liquid, and the base material comprises the following raw materials in percentage by weight: 28-30 wt% of elutriation slurry, 12-14 wt% of black clay, 0-1 wt% of bentonite, 5-6 wt% of pyrophyllite, 12-18 wt% of low-temperature sand, 4-5 wt% of laponite, 6-10 wt% of dolomite, 6-8 wt% of black talc, 7-8 wt% of limestone, 8-10 wt% of diopside, 0-2 wt% of Yongchun coarse soil and 0-3 wt% of waste porcelain powder. According to the invention, by adding the multi-element composite flux, especially adding the lithium element and the organic silicon nano liquid, the firing temperature is greatly reduced, and because the organic silicon nano liquid forms mullite crystals at low temperature, the lithium element is fired at low temperature to easily form a high-strength glass phase, so that the strength of a blank is improved, and the blank is easy to degrade.
Description
The application is a divisional application of patent application named as 'a low-cost high-strength dolomite pottery body and a preparation method thereof', and the application date of the original application is 2016-04-30, and the application number is 201610277068.3.
Technical Field
The invention relates to the technical field of ceramic products, in particular to a low-cost high-strength dolomite pottery body and a preparation method thereof.
Background
The dolomitic pottery is also called light ceramic, and is an environment-friendly ceramic product accepted in the international market. The light white cloud pottery can be colored with colored glaze, can be made into various shapes such as tea tableware, artware and the like, has attractive appearance and is highly favored by consumers. Especially, the white cloud pottery is made of underground soil and finally becomes soil after the mission because the white cloud pottery has high water absorption rate, the broken ceramic chips are easy to degrade by being wetted and are finally differentiated into soil, and other hard ceramics have no function.
However, many manufacturers develop the reinforced dolomite clay, in order to improve the mechanical strength of the dolomite pottery and the firing temperature (1080 ℃ -1130 ℃), achieve semi-ceramization, reduce the degradation function of the dolomite pottery, and do not meet the purposes of energy conservation and emission reduction of the dolomite pottery. The research patent also proposes that the strength is improved by increasing the compressive stress of the glaze, the firing temperature also reaches 1080 +/-15 ℃, the general glaze is in a compressive stress state, and the method for improving the strength by improving the compressive stress is unreliable, is difficult to control, and can reduce the strength of the dolomite pottery if the control is not good.
Disclosure of Invention
The invention aims to overcome the defects of the prior art, and provides a dolomite pottery blank which has easily available raw materials and low price, can ensure the performance index of a product, meets the function of easy degradation of the dolomite pottery, and accords with the national policy of energy conservation and emission reduction.
The technical solution adopted by the invention is as follows: a low-cost high-strength dolomite pottery body is prepared by firing a base material and an additive in a multi-element composite flux system, wherein the additive is organic silicon nano liquid, the water absorption of the prepared body is 18-22%, the breaking strength is 46-52 MPa, the whiteness is 68-71%, and the body is not cracked by one-time quenching at 160-20 ℃.
Preferably, the base material comprises the following raw materials in percentage by weight: 25-35 wt% of elutriation slurry, 10-15 wt% of black clay, 0-1 wt% of bentonite, 5-6 wt% of pyrophyllite, 12-25 wt% of low-temperature sand, 3-8 wt% of laponite, 5-12 wt% of dolomite, 6-12 wt% of black talc, 6-10 wt% of limestone, 8-15 wt% of diopside, 0-5 wt% of Yongchun coarse soil and 0-5 wt% of waste porcelain powder; the additive accounts for 1-3% of the base material by weight. The Yongchun coarse soil mainly comprises about 70% of kaolin and about 30% of quartz, and the plasticity of the product is enhanced in the invention.
Preferably, the multi-element composite flux system is K2O-Na2O-Li2O-Al2O3-SiO2Eutectic system and CaO-MgO-Al2O3-SiO2Eutectic system.
The invention also aims to provide a preparation method of the low-cost high-strength dolomite pottery body, which realizes the purposes of saving energy and reducing consumption by reducing the firing temperature and greatly reduces CO2The emission of waste gas is favorable for protecting the atmospheric environment and promoting the sustainable development of industrial production.
The technical scheme adopted by the method is a preparation method of a low-cost high-strength dolomite pottery body, and the method comprises the following specific steps:
(1) carrying out wheel milling, elutriation, sieving and iron removal on the inferior raw materials to prepare elutriation slurry;
(2) ball-milling the elutriation slurry prepared in the step (1) and other raw materials in the base material respectively in a ball mill according to the weight percentage until the particles of the mixture pass through a 200-250-mesh sieve, and discharging the slurry for later use;
(3) mixing the slurry prepared in the step (2) with an additive according to weight percentage, and preparing qualified dolomite pottery clay strips for molding through the procedures of dehydration, vacuum pugging and aging;
(4) and (3) molding, glazing and sintering the prepared dolomite ceramic mud strips in an oxidizing atmosphere to obtain a low-cost high-strength dolomite ceramic finished product, wherein the highest sintering temperature in the sintering process is 1020-1040 ℃, the heat preservation time is 10-15 minutes, and the total sintering time is 6-7 hours.
Preferably, the firing temperature control in the firing process specifically comprises: raising the temperature from room temperature to 300 ℃ at a constant speed within 90-110 min, raising the temperature to 600 ℃ at a constant speed within 70-85 min, raising the temperature to 900 ℃ at a constant speed within 100-120 min, raising the temperature to the highest firing temperature at a constant speed within 85-95 min, and keeping the temperature at the highest firing temperature for 10-15 min.
The invention has the beneficial effects that:
1. the invention has the advantages of easily obtained raw materials, low price and reduced raw material cost, and can lead the blank body to have partial liquid phase bonding other hard particles in advance by adding the multi-element composite fusing agent, especially the addition of lithium element and the addition of organosilicon nanometer liquid in the general production process flow of the daily ceramics, greatly reduce the firing temperature, enlarge the firing temperature range of the blank body and greatly reduce CO2The method has the advantages of realizing the purposes of energy conservation and consumption reduction by the emission of waste gas, having remarkable economic and social benefits, having important significance for protecting the natural environment, being beneficial to promoting the sustainable development of industrial production, solving the problem of high-temperature deformation of the blank, being convenient for production and implementation, and being easy for industrial popularization and industrial applicationApplication is carried out.
2. According to the invention, the organosilicon nanometer liquid is added into the blank to form a eutectic substance with other elements in the base material, so that the dolomite pottery generates a sintering liquid phase at ultralow temperature, and is a high-viscosity liquid phase, mullite crystals are formed at low temperature, and then a high-strength glass phase is easily formed in the low-temperature sintering process by combining with the lithium element in the base material, so that the strength of a blank body is improved, the sintering qualification rate of the dolomite pottery is greatly improved, and the production cost of the dolomite pottery is directly reduced.
3. The low-cost high-performance dolomite pottery product has the advantages that various performances are remarkably improved, the water absorption rate is 18-22%, the breaking strength is 46-52 MPa, the whiteness is 68-71%, the product is not cracked after being quenched once at 160-20 ℃, the product is easy to corrode, differentiate and degrade by water when buried underground, and the product is green and environment-friendly.
Detailed Description
The invention provides a low-cost high-strength dolomite pottery body which is formed by firing a base material and an additive in a multi-element composite flux system, wherein the multi-element composite flux system is K2O-Na2O-Li2O-Al2O3-SiO2Eutectic system and CaO-MgO-Al2O3-SiO2The additive is an organic silicon nano liquid, and the base material comprises the following raw materials: elutriation mud, black clay, pyrophyllite, low temperature sand, lithium porcelain stone, dolomite, black talc, limestone, diopside and optionally adding a certain amount of bentonite, Yongchun coarse soil and waste porcelain powder.
The first embodiment is as follows:
in this embodiment, the base material includes the following raw materials by weight percent: 28wt% of elutriation slurry, 12wt% of black clay, 1wt% of bentonite, 5wt% of pyrophyllite, 12wt% of low-temperature sand, 4wt% of laponite, 10wt% of dolomite, 6wt% of black talc, 8wt% of limestone, 9wt% of diopside, 2wt% of Yongchun coarse soil and 3wt% of waste porcelain powder; the weight percentage of the additive relative to the base material is 1 percent. The additive is organic silicon nano liquid, and the weight percentage of the additive relative to the base material is 1%.
The preparation method of the low-cost high-strength dolomite pottery body comprises the following specific steps:
(1) carrying out wheel milling, elutriation, sieving and iron removal on the inferior raw materials to prepare elutriation slurry;
(2) ball-milling the elutriation slurry prepared in the step (1) and other raw materials in the base material respectively in a ball mill according to the weight percentage until the particles of the mixture pass through a 200-250-mesh sieve, and discharging the slurry for later use;
(3) mixing the slurry prepared in the step (2) with an additive according to weight percentage, and preparing qualified dolomite pottery clay strips for molding through the procedures of dehydration, vacuum pugging and aging;
(4) and (3) molding, glazing and sintering the prepared dolomite ceramic mud strips in an oxidizing atmosphere to obtain a low-cost high-strength dolomite ceramic finished product, wherein the highest sintering temperature in the sintering process is 1020 ℃, the heat preservation time is 15 minutes, and the total sintering time is 7 hours. The firing temperature control in the firing process specifically comprises the following steps: raising the temperature from room temperature to 300 ℃ at a constant speed within 110min, raising the temperature to 600 ℃ at a constant speed within 85min, then raising the temperature to 900 ℃ at a constant speed within 115min, then raising the temperature to the highest firing temperature at a constant speed within 95min, and then preserving the heat at the highest firing temperature for 15 min.
Example two:
in this embodiment, the base material includes the following raw materials by weight percent: 30wt% of elutriation slurry, 15wt% of black clay, 6wt% of pyrophyllite, 13wt% of low-temperature sand, 5wt% of laponite, 7wt% of dolomite, 6wt% of black talc, 7wt% of limestone, 10wt% of diopside and 1wt% of Yongchun coarse soil. The additive is organic silicon nano liquid, and the weight percentage of the additive relative to the base material is 2%.
The preparation method of the low-cost high-strength dolomite pottery body comprises the following specific steps:
(1) carrying out wheel milling, elutriation, sieving and iron removal on the inferior raw materials to prepare elutriation slurry;
(2) ball-milling the elutriation slurry prepared in the step (1) and other raw materials in the base material respectively in a ball mill according to the weight percentage until the particles of the mixture pass through a 200-250-mesh sieve, and discharging the slurry for later use;
(3) mixing the slurry prepared in the step (2) with an additive according to weight percentage, and preparing qualified dolomite pottery clay strips for molding through the procedures of dehydration, vacuum pugging and aging;
(4) and (3) molding, glazing and sintering the prepared dolomite ceramic mud strips in an oxidizing atmosphere to obtain a low-cost high-strength dolomite ceramic finished product, wherein the highest sintering temperature in the sintering process is 1030 ℃, the heat preservation time is 12 minutes, and the total sintering time is 6.5 hours. The firing temperature control in the firing process specifically comprises the following steps: raising the temperature from room temperature to 300 ℃ at a constant speed within 110min, raising the temperature to 600 ℃ at a constant speed within 80min, raising the temperature to 900 ℃ at a constant speed within 100min, raising the temperature to the highest firing temperature at a constant speed within 88min, and keeping the temperature at the highest firing temperature for 12 min.
Example three:
in this embodiment, the base material includes the following raw materials by weight percent: 32wt% of elutriation mud, 15wt% of black clay, 1wt% of bentonite, 5wt% of pyrophyllite, 13wt% of low-temperature sand, 5wt% of laponite, 10wt% of dolomite, 7wt% of black talc, 7wt% of limestone and 8wt% of diopside; the weight percentage of the additive relative to the base material is 1 percent. The additive is organic silicon nano liquid, and the weight percentage of the additive relative to the base material is 1%.
The preparation method of the low-cost high-strength dolomite pottery body comprises the following specific steps:
(1) carrying out wheel milling, elutriation, sieving and iron removal on the inferior raw materials to prepare elutriation slurry;
(2) ball-milling the elutriation slurry prepared in the step (1) and other raw materials in the base material respectively in a ball mill according to the weight percentage until the particles of the mixture pass through a 200-250-mesh sieve, and discharging the slurry for later use;
(3) mixing the slurry prepared in the step (2) with an additive according to weight percentage, and preparing qualified dolomite pottery clay strips for molding through the procedures of dehydration, vacuum pugging and aging;
(4) and (3) molding, glazing and sintering the prepared dolomite ceramic mud strips in an oxidizing atmosphere to obtain a low-cost high-strength dolomite ceramic finished product, wherein the highest sintering temperature in the sintering process is 1020 ℃, the heat preservation time is 14 minutes, and the total sintering time is 7 hours. The firing temperature control in the firing process specifically comprises the following steps: raising the temperature from room temperature to 300 ℃ at a constant speed within 108min, raising the temperature to 600 ℃ at a constant speed within 83min, raising the temperature to 900 ℃ at a constant speed within 120min, raising the temperature to the highest sintering temperature at a constant speed within 95min, and keeping the temperature at the highest sintering temperature for 14 min.
Example four:
in this embodiment, the base material includes the following raw materials by weight percent: 28wt% of elutriation slurry, 13wt% of black clay, 0.5wt% of bentonite, 5.5wt% of pyrophyllite, 15wt% of low-temperature sand, 5wt% of laponite, 6wt% of dolomite, 9wt% of black talc, 9wt% of limestone, 8wt% of diopside and 1wt% of waste porcelain powder; the weight percentage of the additive relative to the base material is 1 percent. The additive is organic silicon nano liquid, and the weight percentage of the additive relative to the base material is 3%.
The preparation method of the low-cost high-strength dolomite pottery body comprises the following specific steps:
(1) carrying out wheel milling, elutriation, sieving and iron removal on the inferior raw materials to prepare elutriation slurry;
(2) ball-milling the elutriation slurry prepared in the step (1) and other raw materials in the base material respectively in a ball mill according to the weight percentage until the particles of the mixture pass through a 200-250-mesh sieve, and discharging the slurry for later use;
(3) mixing the slurry prepared in the step (2) with an additive according to weight percentage, and preparing qualified dolomite pottery clay strips for molding through the procedures of dehydration, vacuum pugging and aging;
(4) and (3) molding, glazing and sintering the prepared dolomite ceramic clay strips in an oxidizing atmosphere to obtain a low-cost high-strength dolomite ceramic finished product, wherein the highest sintering temperature in the sintering process is 1040 ℃, the heat preservation time is 10 minutes, and the total sintering time is 6 hours. The firing temperature control in the firing process specifically comprises the following steps: raising the temperature from room temperature to 300 ℃ at a constant speed within 90min, raising the temperature to 600 ℃ at a constant speed within 75min, raising the temperature to 900 ℃ at a constant speed within 100min, raising the temperature to the highest firing temperature at a constant speed within 85min, and preserving the heat at the highest firing temperature for 10 min.
Example five:
in this embodiment, the base material includes the following raw materials by weight percent: 29wt% of elutriation slurry, 14wt% of black clay, 5wt% of pyrophyllite, 18wt% of low-temperature sand, 4wt% of laponite, 6wt% of dolomite, 8wt% of black talc, 7wt% of limestone and 9wt% of diopside; the weight percentage of the additive relative to the base material is 1 percent. The additive is organic silicon nano liquid, and the weight percentage of the additive relative to the base material is 1-3%.
The preparation method of the low-cost high-strength dolomite pottery body comprises the following specific steps:
(1) carrying out wheel milling, elutriation, sieving and iron removal on the inferior raw materials to prepare elutriation slurry;
(2) ball-milling the elutriation slurry prepared in the step (1) and other raw materials in the base material respectively in a ball mill according to the weight percentage until the particles of the mixture pass through a 200-250-mesh sieve, and discharging the slurry for later use;
(3) mixing the slurry prepared in the step (2) with an additive according to weight percentage, and preparing qualified dolomite pottery clay strips for molding through the procedures of dehydration, vacuum pugging and aging;
(4) and (3) molding, glazing and sintering the prepared dolomite ceramic mud strips in an oxidizing atmosphere to obtain a low-cost high-strength dolomite ceramic finished product, wherein the highest sintering temperature in the sintering process is 1030 ℃, the heat preservation time is 10 minutes, and the total sintering time is 7 hours. The firing temperature control in the firing process specifically comprises the following steps: raising the temperature from room temperature to 300 ℃ at a constant speed within 110min, raising the temperature to 600 ℃ at a constant speed within 85min, then raising the temperature to 900 ℃ at a constant speed within 120min, then raising the temperature to the highest firing temperature at a constant speed within 95min, and then preserving the heat at the highest firing temperature for 10 min.
Example six:
in this embodiment, the base material includes the following raw materials by weight percent: 31wt% of elutriation slurry, 12wt% of black clay, 1wt% of bentonite, 6wt% of pyrophyllite, 12wt% of low-temperature sand, 6wt% of laponite, 12wt% of dolomite, 6wt% of black talc, 8wt% of limestone and 8wt% of diopside; the weight percentage of the additive relative to the base material is 1 percent. The additive is organic silicon nano liquid, and the weight percentage of the additive relative to the base material is 1-3%.
The preparation method of the low-cost high-strength dolomite pottery body comprises the following specific steps:
(1) carrying out wheel milling, elutriation, sieving and iron removal on the inferior raw materials to prepare elutriation slurry;
(2) ball-milling the elutriation slurry prepared in the step (1) and other raw materials in the base material respectively in a ball mill according to the weight percentage until the particles of the mixture pass through a 200-250-mesh sieve, and discharging the slurry for later use;
(3) mixing the slurry prepared in the step (2) with an additive according to weight percentage, and preparing qualified dolomite pottery clay strips for molding through the procedures of dehydration, vacuum pugging and aging;
(4) and (3) molding, glazing and sintering the prepared dolomite ceramic mud strips in an oxidizing atmosphere to obtain a low-cost high-strength dolomite ceramic finished product, wherein the highest sintering temperature in the sintering process is 1020 ℃, the heat preservation time is 15 minutes, and the total sintering time is 6 hours. The firing temperature control in the firing process specifically comprises the following steps: raising the temperature from room temperature to 300 ℃ at a constant speed within 90min, raising the temperature to 600 ℃ at a constant speed within 70min, raising the temperature to 900 ℃ at a constant speed within 100min, raising the temperature to the highest firing temperature at a constant speed within 85min, and keeping the temperature at the highest firing temperature for 15 min.
The performance indexes of the low-cost high-strength dolomite pottery blanks prepared by the six specific embodiments are respectively detected as shown in the following table.
While there have been shown and described what are at present considered the fundamental principles and essential features of the invention and its advantages, it will be understood by those skilled in the art that the invention is not limited by the embodiments described above, which are merely illustrative of the principles of the invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the invention as defined by the appended claims and their equivalents.
Claims (3)
1. The low-cost high-strength dolomite pottery body is characterized in that the body is formed by firing a base material and an additive in a multi-element composite flux system, wherein the additive is organic silicon nano liquid with the weight percentage of 1-2% relative to the base material, and the base material comprises the following raw materials in percentage by weight: 28-30 wt% of elutriation slurry, 12-14 wt% of black clay, 0-1 wt% of bentonite, 5-6 wt% of pyrophyllite, 12-18 wt% of low-temperature sand, 4-5 wt% of laponite, 6-10 wt% of dolomite, 6-8 wt% of black talc, 7-8 wt% of limestone, 8-10 wt% of diopside, 0-2 wt% of Yongchun coarse soil and 0-3 wt% of waste porcelain powder.
2. The preparation method of the low-cost high-strength dolomite pottery body as claimed in claim 1, characterized by comprising the following steps:
(1) carrying out wheel milling, elutriation, sieving and iron removal on the inferior raw materials to prepare elutriation slurry;
(2) ball-milling the elutriation slurry prepared in the step (1) and other raw materials in the base material respectively in a ball mill according to the weight percentage until the particles of the mixture pass through a 200-250-mesh sieve, and discharging the slurry for later use;
(3) mixing the slurry prepared in the step (2) with an additive according to weight percentage, and preparing qualified dolomite pottery clay strips for later use through dehydration, vacuum pugging and aging processes;
(4) and (3) molding, glazing and sintering the prepared dolomite ceramic mud strips in an oxidizing atmosphere to obtain a low-cost high-strength dolomite ceramic finished product, wherein the highest sintering temperature in the sintering process is 1020-1030 ℃, the heat preservation time is 10-15 minutes, and the total sintering time is 6.5-7 hours.
3. The preparation method of the low-cost high-strength dolomite pottery body as claimed in claim 2, wherein the firing temperature control in the firing process is specifically: raising the temperature from room temperature to 300 ℃ at a constant speed within 90-110 min, raising the temperature to 600 ℃ at a constant speed within 80-85 min, raising the temperature to 900 ℃ at a constant speed within 100-120 min, raising the temperature to the highest firing temperature at a constant speed within 88-95 min, and keeping the temperature at the highest firing temperature for 10-15 min.
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| CN107892553A (en) * | 2017-11-07 | 2018-04-10 | 广西壮族自治区黎塘工业瓷厂 | A kind of low deformation ceramic blank of material |
| CN107721376A (en) * | 2017-11-07 | 2018-02-23 | 广西壮族自治区黎塘工业瓷厂 | A kind of high-strength ceramic blank of material and preparation method thereof |
| CN108751962B (en) * | 2018-06-27 | 2020-09-11 | 福建省德化县陶缘茗陶瓷文化有限公司 | Mutton tallow jade porcelain pot capable of rotating in air and preparation method thereof |
| CN109231961B (en) * | 2018-10-17 | 2021-09-10 | 吴镇秋 | Deformation-resistant rapid-fired fine pottery blank and preparation and application method thereof |
| CN109761632A (en) * | 2019-03-01 | 2019-05-17 | 苏州天红陨星文化传播有限公司 | It is used to prepare ceramics, the preparation method and its usage of aerolite activated water |
| CN110483014A (en) * | 2019-09-10 | 2019-11-22 | 福建省德化县现代陶瓷有限公司 | Easy fired environmental protection blank, enviroment protective ceramic green body and preparation method thereof |
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