CN105541288B - A kind of high-performance low bulk and function far infrared radiation function heat-proof purple sand cooker and preparation method thereof - Google Patents
A kind of high-performance low bulk and function far infrared radiation function heat-proof purple sand cooker and preparation method thereof Download PDFInfo
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- 239000004576 sand Substances 0.000 title claims abstract description 28
- 230000005855 radiation Effects 0.000 title claims abstract description 27
- 238000002360 preparation method Methods 0.000 title claims abstract description 12
- 239000000758 substrate Substances 0.000 claims abstract description 45
- 239000000463 material Substances 0.000 claims abstract description 28
- 239000003595 mist Substances 0.000 claims abstract description 24
- 239000000654 additive Substances 0.000 claims abstract description 19
- 230000000996 additive effect Effects 0.000 claims abstract description 17
- 239000000203 mixture Substances 0.000 claims abstract description 13
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 claims abstract description 10
- 229910001928 zirconium oxide Inorganic materials 0.000 claims abstract description 10
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims abstract description 9
- 150000002500 ions Chemical class 0.000 claims abstract description 9
- 239000000843 powder Substances 0.000 claims abstract description 9
- 229910052761 rare earth metal Inorganic materials 0.000 claims abstract description 8
- 150000002910 rare earth metals Chemical class 0.000 claims abstract description 8
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims abstract description 6
- 239000004927 clay Substances 0.000 claims abstract description 6
- 239000010433 feldspar Substances 0.000 claims abstract description 6
- 229910052744 lithium Inorganic materials 0.000 claims abstract description 6
- 239000000440 bentonite Substances 0.000 claims abstract description 5
- 229910000278 bentonite Inorganic materials 0.000 claims abstract description 5
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 claims abstract description 5
- 239000002689 soil Substances 0.000 claims abstract description 5
- 239000000454 talc Substances 0.000 claims abstract description 5
- 229910052623 talc Inorganic materials 0.000 claims abstract description 5
- 238000000498 ball milling Methods 0.000 claims description 14
- 238000010304 firing Methods 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 5
- 230000001590 oxidative effect Effects 0.000 claims description 4
- 238000007493 shaping process Methods 0.000 claims description 4
- 230000018044 dehydration Effects 0.000 claims description 3
- 238000006297 dehydration reaction Methods 0.000 claims description 3
- 238000007873 sieving Methods 0.000 claims description 3
- 238000001035 drying Methods 0.000 claims description 2
- 238000009472 formulation Methods 0.000 claims description 2
- 238000002156 mixing Methods 0.000 claims description 2
- 230000011218 segmentation Effects 0.000 claims description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims 1
- 235000012054 meals Nutrition 0.000 claims 1
- 229910052760 oxygen Inorganic materials 0.000 claims 1
- 239000001301 oxygen Substances 0.000 claims 1
- 239000002023 wood Substances 0.000 claims 1
- 230000035939 shock Effects 0.000 abstract description 7
- 238000010411 cooking Methods 0.000 abstract description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 229910052572 stoneware Inorganic materials 0.000 abstract description 5
- 238000005245 sintering Methods 0.000 description 4
- 241001122767 Theaceae Species 0.000 description 3
- 230000018109 developmental process Effects 0.000 description 3
- 229910052573 porcelain Inorganic materials 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 2
- 229910052878 cordierite Inorganic materials 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- JSKIRARMQDRGJZ-UHFFFAOYSA-N dimagnesium dioxido-bis[(1-oxido-3-oxo-2,4,6,8,9-pentaoxa-1,3-disila-5,7-dialuminabicyclo[3.3.1]nonan-7-yl)oxy]silane Chemical compound [Mg++].[Mg++].[O-][Si]([O-])(O[Al]1O[Al]2O[Si](=O)O[Si]([O-])(O1)O2)O[Al]1O[Al]2O[Si](=O)O[Si]([O-])(O1)O2 JSKIRARMQDRGJZ-UHFFFAOYSA-N 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 2
- 238000012797 qualification Methods 0.000 description 2
- 239000004575 stone Substances 0.000 description 2
- HEHRHMRHPUNLIR-UHFFFAOYSA-N aluminum;hydroxy-[hydroxy(oxo)silyl]oxy-oxosilane;lithium Chemical compound [Li].[Al].O[Si](=O)O[Si](O)=O.O[Si](=O)O[Si](O)=O HEHRHMRHPUNLIR-UHFFFAOYSA-N 0.000 description 1
- CNLWCVNCHLKFHK-UHFFFAOYSA-N aluminum;lithium;dioxido(oxo)silane Chemical compound [Li+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O CNLWCVNCHLKFHK-UHFFFAOYSA-N 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 229910010293 ceramic material Inorganic materials 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 229910052681 coesite Inorganic materials 0.000 description 1
- 229910052593 corundum Inorganic materials 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 229910052906 cristobalite Inorganic materials 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000035622 drinking Effects 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 229910052670 petalite Inorganic materials 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 239000012779 reinforcing material Substances 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 229910052642 spodumene Inorganic materials 0.000 description 1
- 229910052682 stishovite Inorganic materials 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N titanium dioxide Inorganic materials O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 229910052905 tridymite Inorganic materials 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 229910001845 yogo sapphire Inorganic materials 0.000 description 1
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- C04B33/00—Clay-wares
- C04B33/02—Preparing or treating the raw materials individually or as batches
- C04B33/13—Compounding ingredients
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- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
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- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
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- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
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- C04B2235/3231—Refractory metal oxides, their mixed metal oxides, or oxide-forming salts thereof
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Abstract
The invention discloses a kind of high-performance low bulk and function far infrared radiation function heat-proof purple sand cooker, it is made up of base substrate base-material and base substrate additive；The composition of the base substrate base-material is 45~57wt% of purple clay, 28~40wt% of lithium feldspar, 5~10wt% of boccaro raw ore, 1~3wt% of subnar soil, 5~9wt% of black talc, 0.5~1.5wt% of bentonite, 1~3wt% of rare earth tailings, 1~3wt% of alumina powder；Relative to base substrate base-material, the composition of the base substrate additive is 10~15wt% of negative ion far-infrared micro mist, 1~2wt% of zirconium oxide micro mist, 0.5~1wt% of yittrium oxide micro mist.In addition, also disclose the preparation method of above-mentioned high-performance low bulk and function far infrared radiation function heat-proof purple sand cooker.Heat-proof purple sand cooker production cost of the present invention is low, processability is good, effectively increase thermal shock resistance, mechanical strength and the far infrared transmissivity of product, the safety in utilization and health-caring function of consumer can be met well, so as to may advantageously facilitate the technological progress of purple stoneware cooking ware industry and application development.
Description
Technical field
The present invention relates to ceramic cooker technical field, more particularly to a kind of high-performance low bulk and function far infrared radiation function it is resistance to
Hot purple stoneware cooking ware and preparation method thereof.
Background technology
Boccaro is a kind of stoneware, is a kind of ceramic between pottery and porcelain, is characterized in compact structure, connects
Nearly porcelain, intensity is larger, particle is tiny, and fracture is conchoidal or stone shape, but does not have the translucence of porcelain body；With common greenwave
Difference, boccaro have dual air hole structure.As traditional daily necessities, boccaro have far infrared radiation, acid-alkali-corrosive-resisting,
The advantages that nontoxic.Boccaro ware surface has chiltern and matt effect, and quality is simple and unsophisticated mellow, all the time with high artistry
And sight.The limitation of characteristic and technology based on purple sand pug, its traditional function is as drinking to boccaro ware from ancient times to the present
Vessel, that is, the tea set made tea use；At present, the cooking utensils and tablewares such as saucepan, steamer are also typically used as in life, but are not suitable for directly using
In open firing.
With expanding economy and the continuous improvement of living standards of the people, requirement of the people for boccaro ware is also increasingly
Height, traditional boccaro ware is 10~30MPa there is impact resistance difference shortcoming, the rupture strength such as low with thermal shock resistance, hot
Stability only has 180 DEG C~20 DEG C, it is impossible to open firing.Now, customer demand boccaro ware can be used for decoct Chinese medicine by boiling and simmering, Baoshang,
The hopes such as tea are boiled, traditional boccaro ware can not meet.And easy-formation, cracky, production qualification rate be not low in the mill；Product
Intensity is relatively low, because collision easily causes breakage during transportation loading and unloading, thus is difficult to the use need for meeting consumption market
Ask.Therefore, scholar has carried out Improvement to traditional boccaro ware in the industry, for example, forming violet by adding spodumene or preparing
Green stone matter boccaro etc., to reduce the purple clay coefficient of expansion, so as to realize the raising of thermal shock resistance.But the gained coefficient of expansion is still
Higher, easily cracking, use are dangerous；And cordierite material firing range is narrow, heat endurance fluctuation is larger, and yield rate is low.
Sum it up, prior art still can not solve the technical problem present in traditional boccaro ware well, it has also become boccaro ware is looked forward to
The bottleneck of industry development, it is difficult to meet the development of production and the demand of market application.
The content of the invention
It is an object of the invention to overcome the deficiencies of the prior art and provide a kind of thermal shock resistance is good, intensity is high, cost
High performance heat resistant purple stoneware cooking ware low and with function far infrared radiation function, is meeting that boccaro ware uses as daily living article
While, the performances such as intensity, shaping and the far infrared of product are improved, to meet the safety in utilization of consumer and health well
Healthcare function, so as to may advantageously facilitate the technological progress of purple stoneware cooking ware industry and application development.Another object of the present invention is to
The preparation method of above-mentioned high-performance low bulk and function far infrared radiation function heat-proof purple sand cooker is provided.
The purpose of the present invention is achieved by the following technical programs：
A kind of high-performance low bulk and function far infrared radiation function heat-proof purple sand cooker provided by the invention, by base substrate base-material and
Base substrate additive forms；The composition of the base substrate base-material is 45~57wt% of purple clay, 28~40wt% of lithium feldspar, boccaro raw ore
5~10wt%, 1~3wt% of subnar soil, 5~9wt% of black talc, 0.5~1.5wt% of bentonite, rare earth tailings 1~
3wt%, 1~3wt% of alumina powder；Relative to base substrate base-material, the composition of the base substrate additive is micro- for negative ion far-infrared
10~15wt% of powder, 1~2wt% of zirconium oxide micro mist, 0.5~1wt% of yittrium oxide micro mist.
Preferably, the composition of base substrate base-material of the present invention is 48~55wt% of purple clay, 30~38wt% of lithium feldspar, purple
5~10wt% of sandy plain ore deposit, 1~3wt% of subnar soil, 5~7wt% of black talc, 0.5~1.5wt% of bentonite, rare earth tailings 1
~3wt%, 1~3wt% of alumina powder；Relative to base substrate base-material, the composition of the base substrate additive is negative ion far-infrared
12~15wt% of micro mist, 1~2wt% of zirconium oxide micro mist, 0.5~1wt% of yittrium oxide micro mist.
The present invention introduces expansion ceramic material lithium feldspar in blank, is reducing parison swell coefficient, is improving its heat surely
While qualitative, the sintering character of blank can be promoted, be advantageous to improve its intensity.In addition, by adding negative ion far-infrared
Micro mist, boccaro ware far infrared transmission power is favorably improved, with activated water taste of food can be made more delicious, will not destroyed
Beneficiating ingredient.By additional rare earth material yittrium oxide and rare earth tailings, the sintering reaction of base substrate can be promoted, improve the strong of product
Degree.Using zirconium oxide, aluminum oxide as toughness reinforcing reinforcing material in blank, the shock resistance of base substrate is favorably improved.
Further, alumina powder of the present invention, negative ion far-infrared micro mist, zirconium oxide micro mist, yittrium oxide micro mist
Fineness be 1~20 μm, preferably 5~15 μm.
Another object of the present invention is achieved by the following technical programs：
The preparation method of above-mentioned high-performance low bulk and function far infrared radiation function heat-proof purple sand cooker provided by the invention is such as
Under：After the base substrate base-material and base substrate additive formulations mixing, carry out ball milling, sieving, filter-press dehydration and obtain blank, then will
The blank vacuum pugging, shaping, drying, burnt till afterwards using the slow firing technique of oxidizing flame, i.e., from Oxidation at room temperature atmosphere through 8
~9.5h is burnt to 1200~1250 DEG C slowly, obtains high-performance low bulk and function far infrared radiation function heat-proof purple sand cooker product.
Further, the ball milling of base substrate base-material and base substrate additive described in preparation method of the present invention is using ball milling is segmented, i.e.,
Base substrate base-material first carries out one section of 7.5~8.5h of ball milling, then adds base substrate additive and carries out two sections of 2~3h of ball milling together.
The invention has the advantages that：
(1) the heat-proof purple sand cooker product of high-performance low bulk and function far infrared radiation function of the present invention, production cost it is low and
Processability is good, by the additional base substrate additive in blank, promotes the sintering of blank and strengthens far infrared transmission power,
Product strength, thermal shock resistance and far-infrared functional can be effectively improved, and improves production qualification rate.
(2) blank of the present invention forms substantial amounts of low bulk petalite crystal in oxidizing flame sintering process, in base substrate
And cordierite crystal, and crystalline phase is full and uniform, base substrate porosity is moderate, micropore size size distribution is uniform, further increases
The thermal shock resistance of boccaro ware.Formula system is by aluminum oxide dispersion, zirconium oxide transformation toughening principle, so as to further carry significantly
The high intensity of product.
(3) the heat-proof purple sand cooker product properties of high-performance low bulk and function far infrared radiation function of the present invention have aobvious
The raising of work, rupture strength are 42~56MPa, far infrared transmissivity 0.91~0.93, coefficient of expansion α(800~20 DEG C)=1.6~
1.9×10-6/ DEG C, heat endurance has reached 420~20 DEG C of chillings and not split.
Below in conjunction with embodiment, the present invention is described in further detail.
Embodiment
The material of high-performance of embodiment of the present invention low bulk and function far infrared radiation function heat-proof purple sand cooker is formed such as the institute of table 1
Show.
The material of high-performance of the embodiment of the present invention low bulk of table 1 and function far infrared radiation function heat-proof purple sand cooker forms
* the chemical composition of rare earth tailings is：Na20.26~0.28wt% of O, 0.08~0.18wt% of MgO, Al2O3
16.40~17.68wt%, SiO273.78~75.28wt%, K20.28~0.32wt% of O, TiO20.38~0.55wt%,
Fe2O31.86~2.28wt%, burn and lose 5.46~6.88wt%.
The dosage of * base substrate additives is relative to base substrate base-material.
The preparation method of high-performance of embodiment of the present invention low bulk and function far infrared radiation function heat-proof purple sand cooker is as follows：
After above-mentioned base substrate base-material and base substrate additive are mixed according to the dispensing of table 1, progress ball milling, sieving, filter-press dehydration obtain
To blank, wherein, the ball milling of base substrate base-material and base substrate additive first carries out one section of ball milling using segmentation ball milling, i.e. base substrate base-material
7.5~8.5h, then add base substrate additive and carry out two sections of 2~3h of ball milling together；Then by blank vacuum pugging, shaping,
Dry, burnt till afterwards using the slow firing technique of oxidizing flame, i.e., burnt slowly to 1200~1250 from Oxidation at room temperature atmosphere through 8~9.5h
DEG C, 1h is incubated, obtains high-performance low bulk and function far infrared radiation function heat-proof purple sand cooker product.
The preparation method of high-performance of embodiment of the present invention low bulk and function far infrared radiation function heat-proof purple sand cooker, its technique
Parameter is as shown in table 2.
The preparation method of high-performance of the embodiment of the present invention low bulk of table 2 and function far infrared radiation function heat-proof purple sand cooker
Technological parameter
The performance indications of high-performance of the embodiment of the present invention low bulk and function far infrared radiation function heat-proof purple sand cooker such as institute of table 3
Show.
The performance indications of the heat-proof purple sand cooker of high-performance of the embodiment of the present invention low bulk of table 3 and far-infrared transmitting function
Claims (6)
1. a kind of high-performance low bulk and function far infrared radiation function heat-proof purple sand cooker, it is characterised in that：By base substrate base-material and base
Body additives form；The composition of the base substrate base-material is 45~57wt% of purple clay, 28~40wt% of lithium feldspar, boccaro raw ore 5
~10wt%, 1~3wt% of subnar soil, 5~9wt% of black talc, 0.5~1.5wt% of bentonite, 1~3wt% of rare earth tailings,
1~3wt% of alumina powder；Relative to base substrate base-material, the composition of the base substrate additive for negative ion far-infrared micro mist 10~
15wt%, 1~2wt% of zirconium oxide micro mist, 0.5~1wt% of yittrium oxide micro mist；Described its rupture strength of heat-proof purple sand cooker is 42
~56MPa, far infrared transmissivity are 0.91~0.93, coefficient of expansion α(800~20 DEG C)=1.6~1.9 × 10-6/ DEG C, thermostabilization
Property reaches 420~20 DEG C of chillings and not split.
2. high-performance low bulk according to claim 1 and function far infrared radiation function heat-proof purple sand cooker, it is characterised in that：
The composition of the base substrate base-material is 48~55wt% of purple clay, 30~38wt% of lithium feldspar, 5~10wt% of boccaro raw ore, son wood
1~3wt% of section soil, 5~7wt% of black talc, 0.5~1.5wt% of bentonite, 1~3wt% of rare earth tailings, alumina powder 1~
3wt%；Relative to base substrate base-material, the composition of the base substrate additive is 12~15wt% of negative ion far-infrared micro mist, zirconium oxide
1~2wt% of micro mist, 0.5~1wt% of yittrium oxide micro mist.
3. high-performance low bulk according to claim 1 or 2 and function far infrared radiation function heat-proof purple sand cooker, its feature exist
In：The alumina powder, negative ion far-infrared micro mist, zirconium oxide micro mist, the fineness of yittrium oxide micro mist are 1~20 μm.
4. high-performance low bulk according to claim 3 and function far infrared radiation function heat-proof purple sand cooker, it is characterised in that：
The alumina powder, negative ion far-infrared micro mist, zirconium oxide micro mist, the fineness of yittrium oxide micro mist are 5~15 μm.
5. the preparation method of one of the claim 1-4 high-performance low bulks and function far infrared radiation function heat-proof purple sand cooker,
It is characterized in that：After the base substrate base-material and base substrate additive formulations mixing, carry out ball milling, sieving, filter-press dehydration and obtain base
Material, then by the blank vacuum pugging, shaping, drying, is burnt till using the slow firing technique of oxidizing flame, i.e., from room temperature oxygen afterwards
Change atmosphere to burn to 1200~1250 DEG C slowly through 8~9.5h, obtain high-performance low bulk and function far infrared radiation function heat-proof purple sand is cooked a meal
Has product.
6. the preparation method of high-performance low bulk according to claim 5 and function far infrared radiation function heat-proof purple sand cooker,
It is characterized in that：The ball milling of the base substrate base-material and base substrate additive first carries out one section of ball using segmentation ball milling, i.e. base substrate base-material
7.5~8.5h is ground, base substrate additive is then added and carries out two sections of 2~3h of ball milling together.
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| CN106316347B (en) * | 2016-08-06 | 2019-05-17 | 福建德化五洲陶瓷股份有限公司 | It is anti-to roll over anti-thermal shock far infrared fine faience batch and anti-folding anti-thermal shock far infrared fine pottery product and method with its preparation |
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| CN108975870A (en) * | 2017-06-05 | 2018-12-11 | 佛山市顺德区美的电热电器制造有限公司 | Ceramic composition, ceramic pot body and its manufacturing method and cooking apparatus |
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| CN113651606B (en) * | 2021-09-17 | 2022-12-02 | 景德镇陶瓷大学 | Health-care functional self-release glaze ceramic suitable for low-expansion ceramic cooker and preparation method thereof |
| CN114031368A (en) * | 2021-12-16 | 2022-02-11 | 吴燕娇 | Low-expansion pottery product with far infrared radiation function and preparation method thereof |
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Denomination of invention: The invention relates to a heat-resistant purple sand cooker with high performance, low expansion and far-infrared radiation function and a preparation method thereof Effective date of registration: 20210805 Granted publication date: 20180109 Pledgee: Jingdezhen branch of Bank of Communications Co.,Ltd. Pledgor: Jingdezhen jinghuo porcelain Co.,Ltd. Registration number: Y2021980007361 |
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Denomination of invention: A kind of high-performance low-expansion and far-infrared radiation function heat-resistant purple sand cookware and preparation method thereof Effective date of registration: 20220908 Granted publication date: 20180109 Pledgee: Jingdezhen branch of Bank of Communications Co.,Ltd. Pledgor: Jingdezhen jinghuo porcelain Co.,Ltd. Registration number: Y2022980014855 |
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Denomination of invention: A high-performance, low expansion, and far-infrared radiation resistant purple clay cookware and its preparation method Effective date of registration: 20231010 Granted publication date: 20180109 Pledgee: Jingdezhen branch of Bank of Communications Co.,Ltd. Pledgor: Jingdezhen jinghuo porcelain Co.,Ltd. Registration number: Y2023980060595 |