CN116768612A - Multifunctional steaming and boiling marmite and firing method thereof - Google Patents
Multifunctional steaming and boiling marmite and firing method thereof Download PDFInfo
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- 238000010304 firing Methods 0.000 title claims abstract description 48
- 238000000034 method Methods 0.000 title claims abstract description 23
- 238000010025 steaming Methods 0.000 title claims abstract description 13
- 238000009835 boiling Methods 0.000 title claims description 10
- ZIKATJAYWZUJPY-UHFFFAOYSA-N thulium(iii) oxide Chemical compound [O-2].[O-2].[O-2].[Tm+3].[Tm+3] ZIKATJAYWZUJPY-UHFFFAOYSA-N 0.000 claims abstract description 42
- 239000002994 raw material Substances 0.000 claims abstract description 33
- QXYJCZRRLLQGCR-UHFFFAOYSA-N dioxomolybdenum Chemical compound O=[Mo]=O QXYJCZRRLLQGCR-UHFFFAOYSA-N 0.000 claims abstract description 22
- 239000010453 quartz Substances 0.000 claims abstract description 22
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 22
- 238000010411 cooking Methods 0.000 claims abstract description 21
- 239000004927 clay Substances 0.000 claims abstract description 16
- 239000004575 stone Substances 0.000 claims abstract description 13
- BDAGIHXWWSANSR-NJFSPNSNSA-N hydroxyformaldehyde Chemical compound O[14CH]=O BDAGIHXWWSANSR-NJFSPNSNSA-N 0.000 claims abstract description 12
- 229910000018 strontium carbonate Inorganic materials 0.000 claims abstract description 12
- 229910052878 cordierite Inorganic materials 0.000 claims abstract description 11
- 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 claims abstract description 11
- 239000008262 pumice Substances 0.000 claims abstract description 11
- 229910052611 pyroxene Inorganic materials 0.000 claims abstract description 11
- 229910052629 lepidolite Inorganic materials 0.000 claims abstract description 10
- 239000002023 wood Substances 0.000 claims abstract description 10
- GFQYVLUOOAAOGM-UHFFFAOYSA-N zirconium(iv) silicate Chemical compound [Zr+4].[O-][Si]([O-])([O-])[O-] GFQYVLUOOAAOGM-UHFFFAOYSA-N 0.000 claims abstract description 10
- 239000000203 mixture Substances 0.000 claims description 32
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 29
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 22
- 238000010438 heat treatment Methods 0.000 claims description 20
- 238000001816 cooling Methods 0.000 claims description 18
- 239000002002 slurry Substances 0.000 claims description 18
- 229910052742 iron Inorganic materials 0.000 claims description 17
- 235000015895 biscuits Nutrition 0.000 claims description 13
- 238000000227 grinding Methods 0.000 claims description 12
- 238000007873 sieving Methods 0.000 claims description 12
- 238000002360 preparation method Methods 0.000 claims description 9
- 238000004321 preservation Methods 0.000 claims description 9
- 238000003825 pressing Methods 0.000 claims description 7
- 230000032683 aging Effects 0.000 claims description 6
- 238000001035 drying Methods 0.000 claims description 5
- 238000009966 trimming Methods 0.000 claims description 5
- 229910002114 biscuit porcelain Inorganic materials 0.000 claims description 2
- 238000001914 filtration Methods 0.000 claims description 2
- 238000005303 weighing Methods 0.000 claims description 2
- 238000012546 transfer Methods 0.000 abstract description 16
- 230000008569 process Effects 0.000 abstract description 12
- 238000000265 homogenisation Methods 0.000 abstract description 6
- 230000008859 change Effects 0.000 abstract description 5
- 239000000463 material Substances 0.000 abstract description 4
- 238000011161 development Methods 0.000 abstract description 3
- 238000005516 engineering process Methods 0.000 abstract description 2
- 229910052754 neon Inorganic materials 0.000 abstract description 2
- GKAOGPIIYCISHV-UHFFFAOYSA-N neon atom Chemical compound [Ne] GKAOGPIIYCISHV-UHFFFAOYSA-N 0.000 abstract description 2
- 230000000052 comparative effect Effects 0.000 description 15
- 230000017525 heat dissipation Effects 0.000 description 8
- 238000005336 cracking Methods 0.000 description 7
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 6
- 229910004298 SiO 2 Inorganic materials 0.000 description 4
- 230000007547 defect Effects 0.000 description 4
- 239000002689 soil Substances 0.000 description 4
- 229910010413 TiO 2 Inorganic materials 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 3
- 238000011085 pressure filtration Methods 0.000 description 3
- 238000004904 shortening Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 210000003298 dental enamel Anatomy 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 230000000977 initiatory effect Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- 229910018068 Li 2 O Inorganic materials 0.000 description 1
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 1
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 229910052775 Thulium Inorganic materials 0.000 description 1
- KJNGJIPPQOFCSK-UHFFFAOYSA-N [H][Sr][H] Chemical compound [H][Sr][H] KJNGJIPPQOFCSK-UHFFFAOYSA-N 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 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 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 235000021403 cultural food Nutrition 0.000 description 1
- 229910052637 diopside Inorganic materials 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005496 eutectics Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000010433 feldspar Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 229910000271 hectorite Inorganic materials 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 239000002075 main ingredient Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 239000011733 molybdenum Substances 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 235000021395 porridge Nutrition 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 235000014347 soups Nutrition 0.000 description 1
- 229910052712 strontium Inorganic materials 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012360 testing method Methods 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
Abstract
The invention discloses a multifunctional steaming marmite and a firing method thereof, and belongs to the technical field of marmite firing. The raw materials of the blank of the marmite are quartz, clay, medical stone, lepidolite, purple wood, clay, pumice and thulium oxide, and the raw materials of the glaze layer are quartz, cordierite, zirconium silicate, strontium carbonate, neon pyroxene, molybdenum dioxide and thulium oxide. The technology of the invention further carries out deep research and improvement on the materials of the blank body and the glaze layer of the marmite, the prepared marmite has high thermal stability, the tolerance to temperature change is greatly improved, and the marmite is not cracked even if the marmite is directly heated at a higher temperature; the marmite has the characteristics of high heat transfer speed and high heat transfer homogenization rate, effectively shortens the tedious and lengthy cooking process of the marmite, and has positive significance for the application and development of the marmite.
Description
Technical Field
The invention belongs to the technical field of marmite firing, and particularly relates to a multifunctional steaming marmite and a firing method thereof.
Background
The marmite is a traditional cooking utensil with long history, people adopt pottery clay to make a simple cooking container as early as a new stone era, and the pottery clay used by people is finer and finer along with technological development; ceramic ware with complex shapes and rich patterns is manufactured in the war age, and the ceramic ware comprises a marmite in the modern sense. Marmite has become an important part of Chinese food culture and is popular all over the world.
The marmite is a green and healthy cooking utensil, which is made of natural clay and clay through high temperature firing, and the raw materials contain various microelements and mineral matters required by human body, which are continuously oozed out in the cooking process, thus being beneficial to the health of human body. The marmite can be suitable for various low-temperature cooking modes such as slow boiling, slow stewing, soup stewing, baking, stewing and the like due to the unique structure and materials of the marmite. However, the marmite is made of quartz, feldspar, clay and other raw materials which are difficult to transfer heat, and the characteristics of slow heat dissipation and long-time heat preservation are provided, but the problems of slow heat transfer and low heat transfer homogenization rate are also brought, so that the cooking time is further prolonged, the cooking time of the marmite is longer than that of other cooking modes, and the tedious and lengthy cooking process also remarkably inhibits the expectations of people for using the marmite.
The characteristics of the marmite are largely determined by the manufacturing raw materials and the firing process, and on the basis of the characteristics, the study on firing of the multifunctional marmite with slow heat dissipation, fast heat transfer and long-time heat preservation is necessary.
Disclosure of Invention
Aiming at the defects and shortcomings of the background technology, the invention aims to provide the multifunctional steaming marmite, and on the basis of keeping the advantages of slow heat dissipation and long-time heat preservation of the traditional marmite, the marmite blank and glaze layer materials are further and deeply researched and improved, so that the thermal and mechanical properties of the marmite prepared by the process are obviously optimized. The final marmite manufactured by the invention has high thermal stability, greatly improves the tolerance to temperature change, and does not generate burst even if the marmite is directly heated at a higher temperature; in addition, the marmite has the characteristics of high heat transfer speed and high heat transfer homogenization rate, and compared with the traditional marmite which can homogenize heat but has the defect of long required time, the marmite can directly bear a certain degree of high temperature without gradually heating, can quickly transfer the heat to various parts of the material of the marmite body, and finally achieves the aim of greatly shortening the cooking time of the marmite.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
the invention provides a multifunctional steaming and boiling marmite which comprises the following formula raw materials in parts by weight:
and (3) blank body: 35-50 parts of quartz, 18-28 parts of clay, 14-18 parts of medical stone, 5-7 parts of lepidolite, 7-10 parts of purple wood, 3-10 parts of pumice and 0.6-1.2 parts of thulium oxide;
glaze layer: 12-24 parts of quartz, 8-15 parts of cordierite, 3-6 parts of zirconium silicate, 5-8 parts of strontium carbonate, 3.5-4.5 parts of neon-pyroxene, 2.4-6.5 parts of molybdenum dioxide and 0.3-0.9 part of thulium oxide.
Preferably, the marmite comprises the following formula raw materials in parts by weight:
and (3) blank body: 42 parts of quartz, 22 parts of clay, 16 parts of medical stone, 6 parts of lepidolite, 8 parts of purple wood, 7 parts of pumice and 1.0 part of thulium oxide;
glaze layer: 20 parts of quartz, 11 parts of cordierite, 4.6 parts of zirconium silicate, 6 parts of strontium carbonate, 4.2 parts of neon-pyroxene, 3.5 parts of molybdenum dioxide and 0.7 part of thulium oxide.
In the invention, trace thulium oxide powder is added into a marmite blank body and a glaze layer: on one hand, the doped trace thulium oxide can form complex Al-Tm series compounds with quartz, pumice stone and the like in the raw materials, and can greatly improve the high-temperature thermal stability of a marmite blank body and a glaze layer; on the other hand, in the later use, the Al-Tm series compound can balance the tiny volume change generated by the marmite body in the heating or cooling process, so that the tolerance of the marmite to the temperature change can be remarkably improved, and a foundation is provided for heating the marmite at high temperature and further effectively shortening the cooking time.
Strontium carbonate, neon pyroxene, paigeite and thulium oxide are added into a marmite glaze layer: firstly, in the glaze raw material system, the addition of a proper amount of strontium carbonate, neon-hectorite and molybdenum dioxide can promote the generation of more eutectic, ensure the formation of a low-expansion phase and provide a basis for the stable reaction between the glaze and a blank under the subsequent high-temperature condition; meanwhile, in the glaze firing forming process of the glaze layer raw material, silicon/strontium/molybdenum/thulium glass crystal boundary with special thermal property can be formed, the rapid progress of chemical reaction between the glaze layer and a blank body can be promoted, the absorption and internal transmission of the glaze layer to external heat are further accelerated, and the effects of rapid homogenization of heat of a marmite and remarkable shortening of cooking time are achieved.
Preferably, the thickness of the pot body of the multifunctional steaming and boiling marmite is controlled to be 0.58-0.65cm.
The invention also provides a firing method of the multifunctional steaming marmite, which comprises the following steps:
s1, respectively weighing a marmite blank body and a glaze layer preparation raw material according to a formula proportion for standby;
s2, adding water into each preparation raw material of the blank body, grinding the raw material into slurry, and sieving, removing iron, press-filtering, pugging and ageing the slurry to obtain a blank mixture for later use;
s3, adding water into each preparation raw material of the glaze layer, grinding the raw materials into glaze slurry, and sieving and deironing the glaze slurry to obtain a glaze mixture for later use;
s4, pressing and forming the blank mixture obtained in the step S2, drying and trimming to obtain a primary blank;
s5, taking the primary blank obtained in the step S4, and glazing the primary blank by adopting the glaze mixture obtained in the step S3 to obtain a green-burned blank, and transferring the green-burned blank into a high-temperature environment for glaze burning to obtain a finished marmite product.
Preferably, the mass ratio of the water added into the S2 blank raw material is 1:0.8, the grinding and sieving conditions are that the 400-mesh screen residue is not more than 1%, the grinding and sieving are carried out, the 250-mesh screen is carried out, and then iron removal, filter pressing, pugging and aging are sequentially carried out; the water content of the obtained blank mixture is controlled to be 15% -20%.
Preferably, the mass ratio of water to the S3 glaze raw material is 1:1.2, the grinding and sieving condition is that the 500 mesh screen residue is not more than 0.8%, the grinding and sieving are carried out, and then the iron is removed; the concentration of the resulting glaze mixture was controlled to be 52-55 baume.
Preferably, the specific operation of the S5 bisque firing is as follows: the primary blank is subjected to biscuit firing at a high temperature of 1150 ℃ for 7-9h, heat preservation is carried out for 1h, and glazing is carried out after furnace cooling.
Preferably, the specific operation of S5 glaze firing is as follows: and firing the biscuit obtained by glazing at 1200 ℃ for 2-3 hours, then cooling to 1050 ℃ for firing 1-1.5 hours, heating to 1300 ℃ for firing 4.5-6 hours, preserving heat for 1 hour, and cooling along with a furnace to obtain a marmite finished product.
Preferably, the thickness of the S5 glazing is 0.5-0.6mm.
Compared with the prior art, the invention has the beneficial effects that:
1. the multifunctional marmite prepared by the process has higher tolerance to temperature change, does not need to be gradually heated, can directly heat the marmite at higher temperature without cracking, and firstly shortens the cooking time of the marmite from the heating treatment of slowly heating.
2. The multifunctional marmite prepared by the process has the characteristics of high heat transfer speed and high heat transfer homogenization rate, effectively overcomes the defect that the traditional marmite can homogenize heat but needs long time, further shortens the tedious and lengthy cooking process of the marmite, and has positive significance for the application and development of the marmite.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described in the following examples. The specific conditions are not noted in the examples and are carried out according to conventional conditions or conditions recommended by the manufacturer. The reagents or apparatus used were conventional products commercially available without the manufacturer's attention.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.
The raw materials of the marmite related to the experiment are all from commercial market, wherein the purity of quartz is 96.93%; main component SiO of clay 2 70.03％、Al 2 O 3 15.89％、Fe 2 O 3 4.75%, caO 1.23% and MgO 1.83%; main component SiO of medical stone 2 66.32％、Al 2 O 3 17.05％、Fe 2 O 3 2.30％、CaO 3.16％、Na 2 O1.1％、K 2 O 1.2％、TiO 2 0.63%, mnO 0.75%; lepidolite main component Li 2 O 3.91％、SiO 2 49.82％、Al 2 O 3 22.39％、K 2 O 10.26％、Rb 2 O 1.33％、Cs 2 0.07% of O and 1.97% of MnO; purple wood soil-saving main ingredient SiO 2 38.37％、Al 2 O 3 37.88％、Fe 2 O 3 1.81％、TiO 2 1.70％、P 2 O 5 0.17％、ZrO 2 0.09%; pumice stone main component SiO 2 70.15％、Al 2 O 3 13.66％、Fe 2 O 3 1.30％、Na 2 O 1.72％、K 2 O 1.94％、TiO 2 0.13% MgO 0.67%; cordierite main component SiO 2 46.70％、Al 2 O 3 34.08%, feO 3.12% and MgO 12.10%; main component SiO of neon-pyroxene 2 45.23％、Fe 2 O 3 34.49％、Na 2 O 11.85％、Sc 2 O 3 0.07％、Nb 2 O 5 0.03％。
Example 1
A preparation method of a multifunctional marmite comprises the following steps:
1. 42 parts of quartz, 22 parts of clay, 16 parts of medical stone, 6 parts of lepidolite, 8 parts of purple wood saving soil, 7 parts of pumice and 1.0 part of thulium oxide are weighed according to parts by weight, mixed evenly by adding 80% of water of the mixture, ground into slurry (the 400-mesh screen residue is not more than 1%), sieved by a 250-mesh sieve, and then sequentially subjected to iron removal, pressure filtration, pugging and ageing treatment to obtain a blank mixture (the water content is controlled to be 18%).
2. According to the weight portion, 20 portions of quartz, 11 portions of cordierite, 4.6 portions of zirconium silicate, 6 portions of strontium carbonate, 4.2 portions of diopside, 3.5 portions of molybdenum dioxide and 0.7 portion of thulium oxide are weighed, 120 percent of water by mass of the mixture is added and evenly mixed, the obtained glaze slurry is ground (the 500-mesh screen residue is not more than 0.8 percent), the ground glaze slurry is sieved by a 250-mesh screen, and then iron removal treatment is carried out, so that the glaze mixture (the control concentration is 54 Baume) is obtained.
3. Pressing the obtained blank mixture to form, drying and trimming to obtain a primary blank; taking a primary blank, carrying out high-temperature biscuit firing for 8 hours at 1150 ℃, preserving heat for 1 hour, cooling with a furnace, glazing the primary blank with the obtained glaze mixture (with the thickness of 0.6 mm) to obtain a biscuit firing blank, firing the biscuit firing blank at 1200 ℃ for 2.5 hours, cooling to 1050 ℃ for firing for 1.2 hours, heating to 1300 ℃ for firing for 5 hours, preserving heat for 1 hour, and cooling with the furnace to obtain a marmite finished product.
Example 2
A preparation method of a multifunctional marmite comprises the following steps:
1. according to the weight portion, 35 portions of quartz, 28 portions of clay, 16 portions of medical stone, 5 portions of lepidolite, 10 portions of purple wood saving soil, 3 portions of pumice and 0.6 portion of thulium oxide are weighed and mixed, 80 percent of water by mass of the mixture is added and mixed uniformly, the obtained slurry is ground (the 400-mesh screen residue is not more than 1 percent), the slurry is ground and passes through a 250-mesh screen, and then iron removal, pressure filtration, pugging and staling treatment are sequentially carried out, so that a blank mixture (the water content is controlled to be 15%) is obtained.
2. 12 parts of quartz, 15 parts of cordierite, 3 parts of zirconium silicate, 5 parts of strontium carbonate, 4.5 parts of neon-pyroxene, 2.4 parts of molybdenum dioxide and 0.3 part of thulium oxide are weighed according to parts by weight, 120% of water by mass of the mixture is added and uniformly mixed, the obtained glaze slurry is ground (the 500-mesh screen residue is not more than 0.8%), the ground glaze slurry is sieved by a 250-mesh screen, and then iron removal treatment is carried out, so that a glaze mixture (the concentration is controlled to be 55 Baume degrees) is obtained.
3. Pressing the obtained blank mixture to form, drying and trimming to obtain a primary blank; taking a primary blank, carrying out high-temperature biscuit firing for 7h at 1150 ℃, preserving heat for 1h, cooling with a furnace, glazing the primary blank with the obtained glaze mixture (with the thickness of 0.6 mm) to obtain a biscuit firing blank, firing the biscuit firing blank at 1200 ℃ for 3h, cooling to 1050 ℃ for 1.5h, heating to 1300 ℃ for 4.5h, preserving heat for 1h, and cooling with the furnace to obtain a marmite finished product.
Example 3
A preparation method of a multifunctional marmite comprises the following steps:
1. 50 parts of quartz, 18 parts of clay, 16 parts of medical stone, 7 parts of lepidolite, 7 parts of purple wood saving soil, 10 parts of pumice and 1.2 parts of thulium oxide are weighed according to parts by weight, mixed evenly by adding 80% of water of the mixture, ground into slurry (the 400-mesh screen residue is not more than 1%), sieved by a 250-mesh sieve, and then sequentially subjected to iron removal, pressure filtration, pugging and ageing treatment to obtain a blank mixture (the water content is controlled to be 20%).
2. 24 parts of quartz, 8 parts of cordierite, 6 parts of zirconium silicate, 8 parts of strontium carbonate, 3.5 parts of neon-pyroxene, 6.5 parts of molybdenum dioxide and 0.9 part of thulium oxide are weighed according to parts by weight, 120% of water by mass of the mixture is added and uniformly mixed, the obtained glaze slurry is ground (the 500-mesh screen residue is not more than 0.8%), the obtained glaze slurry is ground and passes through a 250-mesh screen, and then iron removal treatment is carried out, so that a glaze mixture (the concentration is controlled to be 52 Baume degrees) is obtained.
3. Pressing the obtained blank mixture to form, drying and trimming to obtain a primary blank; taking a primary blank, carrying out high-temperature biscuit firing for 9 hours at 1150 ℃, preserving heat for 1 hour, cooling along with a furnace, glazing the primary blank with the obtained glaze mixture (with the thickness of 0.6 mm) to obtain a biscuit firing blank, firing the biscuit firing blank at 1200 ℃ for 2 hours, cooling to 1050 ℃ for firing for 1 hour, heating to 1300 ℃ for firing for 6 hours, preserving heat for 1 hour, and cooling along with the furnace to obtain a finished marmite product.
Comparative example 1
The comparative example refers to the step parameters of example 1, except that no thulium oxide is added to the raw materials of the blank and the glaze layer of the marmite, namely the raw materials of the blank are: 42 parts of quartz, 22 parts of clay, 16 parts of medical stone, 6 parts of lepidolite, 8 parts of purple wood festival soil and 7 parts of pumice; the glaze layer is prepared from the following raw materials: 20 parts of quartz, 11 parts of cordierite, 4.6 parts of zirconium silicate, 6 parts of strontium carbonate, 4.2 parts of neon-pyroxene and 3.5 parts of molybdenum dioxide.
Comparative example 2
The comparative example refers to the step parameters of example 1, except that no neon-pyroxene or molybdenum dioxide is added to the raw materials of the enamel layer of the marmite, namely, the raw materials of the enamel layer are: 20 parts of quartz, 11 parts of cordierite, 4.6 parts of zirconium silicate, 6 parts of strontium carbonate and 0.7 part of thulium oxide.
Comparative example 3
This comparative example refers to the step parameters of example 1, except that the green-burned blank obtained was subjected to glaze firing under the following conditions: and (3) firing the green-burned blank at 1200 ℃ for 3.7 hours, heating to 1300 ℃ for firing for 5 hours, preserving heat for 1 hour, and cooling along with a furnace to obtain a finished marmite product.
Performance tests were performed on the sample marmite prepared in examples 1 to 3 and comparative examples 1 to 3. (the difference between the size-related data of the samples to be detected is not more than 0.1%, and each group is obtained by taking an average value through testing by using 20 samples)
The above sample marmite was tested for thermal shock resistance and water absorption according to GB/T3298-2022 and GB/T3299-2022 related standards, and the results are as follows.
TABLE 1
| Thermal shock resistance | Water absorption rate | |
| Example 1 | Ten exchanges at 450-20 deg.c without cracking | 1.8％ |
| Example 2 | Ten exchanges at 450-20 deg.c without cracking | 1.7％ |
| Example 3 | Ten exchanges at 450-20 deg.c without cracking | 1.9％ |
| Comparative example 1 | Exchange for three times at 350-20 deg.C without cracking | 2.0％ |
| Comparative example 2 | Exchange eight times at 450-20 deg.c without cracking | 1.8％ |
| Comparative example 3 | Ten exchanges at 450-20 deg.c without cracking | 1.7％ |
The rice and water in equal amount and proper amount are respectively added into a sample marmite, a household gas furnace (4 kW) is adopted, heating is carried out for 3min by medium fire, and then white porridge is cooked under the condition of changing the heating of big fire, and the central temperature of the mixture in the marmite is measured at intervals to obtain an average value, and the result is as follows.
TABLE 2
| Example 1 | Example 2 | Example 3 | Comparative example 2 | Comparative example 3 | |
| Initial initiation | 20℃ | 20℃ | 20℃ | 20℃ | 20℃ |
| Heating 5 × | 20℃ | 20℃ | 20℃ | 20℃ | 20℃ |
| Heating 10 × | 32℃ | 29℃ | 30℃ | 23℃ | 25℃ |
| Heating 15 × | 68℃ | 62℃ | 64℃ | 35℃ | 43℃ |
| Heating 20 × | 99℃ | 99℃ | 99℃ | 57℃ | 78℃ |
| Heating 25 × | 99℃ | 99℃ | 99℃ | 92℃ | 98℃ |
| Heating 30 × | 99℃ | 99℃ | 99℃ | 98℃ | 99℃ |
Note that: * Represents a time period
In conclusion, the heat transfer speed of the multifunctional marmite prepared by the process is obviously improved, compared with the heat transfer speed of the marmite in the embodiment 1, the heat transfer speed of the marmite in the embodiment 2 is greatly reduced, and the heat transfer speed of the marmite in the embodiment 3 is also slightly reduced, so that the heat transfer speed of the marmite can be effectively improved, and further, the cooking time of the marmite is greatly shortened (the sample marmite in the embodiment 1 is retested under the condition of direct heating by strong fire, and the center temperature of a mixture in the marmite reaches 98 ℃ in 10 time periods). The experimental sample marmite is immediately transferred into the same environment for natural cooling, and the heat dissipation and heat preservation properties of the experimental sample marmite are compared, so that the result is as follows.
TABLE 3 Table 3
| Example 1 | Example 2 | Example 3 | Comparative example 2 | Comparative example 3 | |
| Initial initiation | 99℃ | 98℃ | 99℃ | 98℃ | 99℃ |
| Cooling 10 × | 98℃ | 95℃ | 96℃ | 82℃ | 97℃ |
| Cooling 20 × | 94℃ | 88℃ | 92℃ | 49℃ | 92℃ |
| Cooling 30 × | 83℃ | 76℃ | 76℃ | 23℃ | 80℃ |
| Cooling 40 × | 66℃ | 51℃ | 54℃ | 22℃ | 58℃ |
In conclusion, the multifunctional marmite prepared by the process has good heat preservation performance, and the heat preservation performance of comparative example 2 is obviously reduced. Therefore, the multifunctional marmite with the heat dissipation function overcomes the defects of slow heat dissipation and low heat dissipation homogenization rate of the traditional marmite, maintains the characteristics of slow heat dissipation and long-time heat preservation of the marmite, and is prepared successfully.
The embodiments described above represent only a few preferred embodiments of the present invention, which are described in more detail and are not intended to limit the present invention. It should be noted that various changes and modifications can be made to the present invention by those skilled in the art, and any modifications, equivalent substitutions, improvements, etc. which are within the spirit and principle of the present invention are included in the scope of the present invention.
Claims (9)
1. The multifunctional steaming and boiling marmite is characterized by comprising the following formula raw materials in parts by weight:
and (3) blank body: 35-50 parts of quartz, 18-28 parts of clay, 14-18 parts of medical stone, 5-7 parts of lepidolite, 7-10 parts of purple wood, 3-10 parts of pumice and 0.6-1.2 parts of thulium oxide;
glaze layer: 12-24 parts of quartz, 8-15 parts of cordierite, 3-6 parts of zirconium silicate, 5-8 parts of strontium carbonate, 3.5-4.5 parts of neon-pyroxene, 2.4-6.5 parts of molybdenum dioxide and 0.3-0.9 part of thulium oxide.
2. The multifunctional steaming and boiling marmite according to claim 1, wherein the marmite comprises the following formula raw materials in parts by weight:
and (3) blank body: 42 parts of quartz, 22 parts of clay, 16 parts of medical stone, 6 parts of lepidolite, 8 parts of purple wood, 7 parts of pumice and 1.0 part of thulium oxide;
glaze layer: 20 parts of quartz, 11 parts of cordierite, 4.6 parts of zirconium silicate, 6 parts of strontium carbonate, 4.2 parts of neon-pyroxene, 3.5 parts of molybdenum dioxide and 0.7 part of thulium oxide.
3. The multipurpose cooking marmite according to claim 1, wherein the thickness of the pan body of the multipurpose cooking marmite is controlled to be 0.58-0.65cm.
4. A method of firing the multi-functional cooking marmite of any one of claims 1-3, comprising the steps of:
s1, respectively weighing a marmite blank body and a glaze layer preparation raw material according to a formula proportion for standby;
s2, adding water into each preparation raw material of the blank body, grinding the raw material into slurry, and sieving, removing iron, press-filtering, pugging and ageing the slurry to obtain a blank mixture for later use;
s3, adding water into each preparation raw material of the glaze layer, grinding the raw materials into glaze slurry, and sieving and deironing the glaze slurry to obtain a glaze mixture for later use;
s4, pressing and forming the blank mixture obtained in the step S2, drying and trimming to obtain a primary blank;
s5, taking the primary blank obtained in the step S4, and glazing the primary blank by adopting the glaze mixture obtained in the step S3 to obtain a green-burned blank, and transferring the green-burned blank into a high-temperature environment for glaze burning to obtain a finished marmite product.
5. The firing method of the multifunctional steaming and boiling marmite according to claim 4, wherein the mass ratio of the S2 blank raw material to the water is 1:0.8, the grinding and sieving condition is that the 400 mesh screen residue is not more than 1%, the grinding and sieving are carried out, and the grinding and sieving are carried out by a 250 mesh sieve, and then iron removal, filter pressing, pugging and aging are sequentially carried out; the water content of the obtained blank mixture is controlled to be 15% -20%.
6. The firing method of the multifunctional steaming and boiling marmite according to claim 4, wherein the mass ratio of the water added to the raw materials of the S3 glaze layer is 1:1.2, the grinding and sieving condition is that the 500 mesh screen residue is not more than 0.8%, and the raw materials are ground and sieved by a 250 mesh screen, and then iron is removed; the concentration of the resulting glaze mixture was controlled to be 52-55 baume.
7. The method for firing a multi-functional cooking marmite according to claim 4, wherein the specific operation of S5 bisque firing is: the primary blank is subjected to biscuit firing at a high temperature of 1150 ℃ for 7-9h, heat preservation is carried out for 1h, and glazing is carried out after furnace cooling.
8. The firing method of the multifunctional steaming and boiling marmite according to claim 4, wherein the specific operation of the S5 glaze firing is as follows: and firing the biscuit obtained by glazing at 1200 ℃ for 2-3 hours, then cooling to 1050 ℃ for firing 1-1.5 hours, heating to 1300 ℃ for firing 4.5-6 hours, preserving heat for 1 hour, and cooling along with a furnace to obtain a marmite finished product.
9. The method for firing a multi-purpose cooking marmite according to claim 4, wherein the thickness of the S5 glazing is 0.5-0.6mm.
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