A glazed self-baking ceramic body and methods of making and using the same

Abstract

The application relates to a glaze self-generating cooking ceramic blank and a preparation and use method thereof, and relates to the technical field of cooking ceramic preparation. Potash feldspar, wood cellar soil, Luchuan clay and calcined smooth talc used in the application are all locally produced, and waste mullite shed board powder is a waste material eliminated in production. Local resources and production waste are fully utilized, and production cost is greatly reduced. The wood cellar soil has the characteristics of high iron content and sintering, and is combined with a special process to be strictly controlled through a kiln firing process. Under specific high temperature and time, the iron oxide in the wood cellar soil in the clay reacts with potassium feldspar, sodium dioxide and fused quartz to generate a thin glaze-like glaze attached to the surface of the product. The cooking ceramic product has a glaze luster without glazing, the surface of the cooking ceramic product is smooth and bright, has good thermal shock resistance, does not melt lead and cadmium, is suitable for electric heating and open fire heating, has no leakage, is suitable for microwave ovens, has high scientific and technological content, and is difficult to imitate.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of cooking ceramic preparation, in particular to a glaze self-generating cooking ceramic body and its preparation and use method. BACKGROUND

[0002] Ceramics is a material and various products made of clay as the main raw material and various natural minerals through mixing, shaping and calcining. People call the product made of a kind of pottery clay and fired in a special kiln high-temperature fired product as ceramics, which is the general term of pottery and porcelain. The difference between pottery and porcelain lies in the difference of raw soil and temperature. On the basis of pottery making temperature, pottery becomes porcelain by adding fire and heating. The firing temperature of pottery is 800-1000 degrees, and the firing temperature of porcelain is 1300-1400 degrees. There are many varieties of ceramic products, and their chemical composition, mineral composition, physical properties and manufacturing methods often overlap and interlace, so it is difficult to harden them into several systems or classify them in detail.

[0003] Cooking ceramic is a branch of ceramic products, which can be used for cooking, boiling, frying, frying and other food. At present, the existing patent (CN201910321296) discloses a high-heat-resistant ceramic cooker and its preparation method. The body-glaze formula composed of spodumene, lithia feldspar, kaolin and color base has good body-glaze combination, low expansion coefficient and good thermal stability, which overcomes the shortcomings of the existing technology. The thermal stability is improved from 450℃-20℃ to 650℃-20℃, and a body-glaze formula with good body-glaze combination, low expansion coefficient and good heat resistance is provided to meet the needs of consumers. The existing patent (CN201610033522) discloses a preparation method of a ceramic cooker with high thermal shock resistance, which includes the following production steps: (1) body preparation (2) glaze preparation (3) shaping and repairing (4) bisque firing (5) glazing (6) firing. The high-thermal-shock-resistant ceramic cooker product has high qualification rate, regular appearance, dense glaze layer, high product strength and high thermal shock resistance of 600℃ into 20℃ water for heat exchange once without cracking. The preparation of the cooking ceramic mentioned in the above patent needs to be glazed. This kind of product mainly adjusts the glaze formula to generate a dense glaze layer on the surface of the cooking ceramic, so as to increase the heat resistance and stability of the cooking ceramic.

[0004] The cooking ceramic developed by the application uses the materials such as potash feldspar, wood cellar clay, Luchuan clay and calcined muscovite, which are all locally produced, and the waste mullite shed board powder is the waste material eliminated in production, which changes waste into treasure! The local resources are fully utilized, and the production cost can be greatly reduced. The application mainly utilizes the unique characteristics of high iron content and sintering of the wood cellar clay in the local area, combines with the process, and strictly controls through the kiln firing process. Under the specific high temperature and time, the iron oxide in the wood cellar clay in the clay reacts with the potassium feldspar, sodium feldspar and fused quartz to form a thin glaze-like glaze attached to the surface of the product. The cooking ceramic product has a glaze without glazing. The cooking ceramic product has a smooth surface, good thermal shock resistance, no lead and cadmium melting out, is suitable for electric heating and open fire heating, has no leakage, is suitable for microwave oven, has high scientific and technological content, and is difficult to imitate. SUMMARY

[0005] The application provides a glaze self-generating cooking ceramic body and a preparation and use method thereof, which can solve the problems that the cooking ceramic product has a glaze without glazing, the cooking ceramic product has a smooth surface, good thermal shock resistance, no lead and cadmium melting out, is suitable for electric heating and open fire heating, has no leakage, is suitable for microwave oven, has high scientific and technological content, and is difficult to imitate.

[0006] The application is implemented by the following technical scheme: the application provides a glaze self-generating cooking ceramic body, which is composed of the following components in parts by weight: 9-11 parts of potash feldspar from Hezhou in Guangxi, 9-11 parts of calcined muscovite from Wuming in Guangxi, 17-19 parts of black clay from Luchuan in Guangxi, 10-14 parts of waste mullite shed board powder, 22-24 parts of fused quartz, and 25-29 parts of wood cellar clay from the town of Lingshan in Rongxian in Guangxi.

[0007] The potash feldspar from Hezhou in Guangxi is potash feldspar produced in Hezhou in Guangxi; the calcined muscovite from Wuming in Guangxi is calcined muscovite produced in Wuming district of Nanning in Guangxi; the black clay from Luchuan in Guangxi is black clay produced in Luchuan county of Yulin in Guangxi; the waste mullite shed board powder is waste material produced in the production of mullite shed board; and the wood cellar clay from the town of Lingshan in Rongxian in Guangxi is clay produced in the wood cellar village of Lingshan town in Rongxian in Guangxi.

[0008] Further, the glaze self-generating cooking ceramic body is composed of the following components in parts by weight: 10-11 parts of potash feldspar from Hezhou in Guangxi, 10-11 parts of calcined muscovite from Wuming in Guangxi, 18-19 parts of black clay from Luchuan in Guangxi, 12-14 parts of waste mullite shed board powder, 23-24 parts of fused quartz, and 27-29 parts of wood cellar clay from the town of Lingshan in Rongxian in Guangxi.

[0009] Further, the chemical composition of the glaze autogenic cooking ceramic blank is: 67.15-67.26% of silicon oxide, 17.11-17.33% of aluminum oxide, 5.82-5.99% of iron oxide, 0.61-0.73% of titanium dioxide, 0.55-0.63% of calcium oxide, 3.11-3.27% of magnesium oxide, 1.76-1.84% of potassium oxide, 0.48-0.53% of sodium oxide, 2.73-2.88% of loss on ignition, and the total is 100%.

[0010] Further, the chemical composition of the Guangxi Hezhou potash feldspar is: 69.08% of silicon oxide, 17.63% of aluminum oxide, 0.12% of iron oxide, 0.01% of titanium dioxide, 0.51% of calcium oxide, 0.13% of magnesium oxide, 10.25% of potassium oxide, and 2.21% of sodium oxide, and the loss on ignition is 0.06%; the chemical composition of the Guangxi Wuming calcined sericite is: 64.05% of silicon oxide, 0.12% of aluminum oxide, 0.05% of iron oxide, 0.02% of titanium dioxide, 5.16% of calcium oxide, 30.15% of magnesium oxide, 0.16% of potassium oxide, and 0.18% of sodium oxide, and the loss on ignition is 0.11%.

[0011] Further, the chemical composition of the Guangxi Luchuan black mud is: 51.86% of silicon oxide, 33.4% of aluminum oxide, 2.12% of iron oxide, 0.95% of titanium dioxide, 0.11% of calcium oxide, 0.06% of magnesium oxide, 1.02% of potassium oxide, and 0.35% of sodium oxide, and the loss on ignition is 10.13%.

[0012] Further, the chemical composition of the waste mullite shed board powder is: 37.0% of silicon oxide, 60.64% of aluminum oxide, 1.18% of iron oxide, 0.76% of titanium dioxide, 0.13% of calcium oxide, 0.02% of magnesium oxide, 0.12% of potassium oxide, and 0.15% of sodium oxide.

[0013] Further, the chemical composition of the Guangxi Rongxian Lingshan Town wood cellar soil is: 64.86% of silicon oxide, 7.52% of aluminum oxide, 21.12% of iron oxide, 1.56% of titanium dioxide, 0.11% of calcium oxide, 0.02% of magnesium oxide, 1.21% of potassium oxide, and 0.45% of sodium oxide, and the loss on ignition is 3.15%.

[0014] The application also provides a preparation method of the glaze autogenic cooking ceramic blank, which comprises the following steps:

[0015] 1) According to the formula of the glaze autogenic cooking ceramic blank, the components of the glaze autogenic cooking ceramic blank are weighed to obtain mixed raw materials;

[0016] 2) Put the mixed raw materials into a wet ball mill, ball mill, put slurry, pass through a 60 mesh screen, and control the fineness of the glaze self-cooking ceramic base material to be 1.2-2.0 wt% on a 100 mesh screen, to obtain the glaze self-cooking ceramic base material.

[0017] The application also provides a use method of the glaze self-cooking ceramic base material, comprising the following steps:

[0018] (1) Take the glaze self-cooking ceramic base material, filter and dehydrate, roll and shape, and smooth the wet base piece to obtain a trimmed base piece;

[0019] (2) Dry the trimmed base piece to obtain a dry base piece;

[0020] (3) Check the appearance of the dry base piece;

[0021] (4) Send the dry base piece with no defects in appearance to a firing process, to obtain a cooking ceramic finished product; the firing temperature is controlled to be 1260-1280℃, the firing is performed in an oxidizing atmosphere, and the firing period is 15 hours.

[0022] Further, the firing of the cooking ceramic finished product in the step (4) is controlled as follows: 1) the low-temperature stage is a glaze base preheating stage, the kiln temperature is 350-480℃, and the holding time is 2.8-3.0h; 2) the first medium-temperature stage is a low-oxidation stage, the kiln temperature is 800-870℃, and the holding time is 2.5-3.2h; 3) the second medium-temperature stage is a strong oxidation stage, the kiln temperature is 980-1050℃, and the holding time is 3.5-4.0h; 4) the high-temperature stage is a product ceramic forming stage, the kiln temperature is 1260-1280℃, and the holding time is 2.0-2.5h; 5) the rapid cooling stage is a product control key stage, the kiln temperature is 1280-800℃, and the holding time is 1.5-2.0h; 6) the product slow cooling stage, the kiln temperature is 800-580℃, and the holding time is 2.5-3.0h; 7) natural cooling, to complete the firing process.

[0023] The glaze self-cooking ceramic base material of the application, and the cooking ceramic finished product produced therefrom, have the following detection condition statistics:

[0024] (1)Cooking ceramic products by thermal shock resistance test: the test uses liquefied petroleum gas as gas source, and uses open flame to dry burn the bottom of the sample. The test gas pressure is (2800±100) Pa, and the control flame heat load is (4.2±0.1) kW. When any point of the three points (center point, edge point, and point between center and edge) in the sample reaches 450℃-460℃, the flame is extinguished, and within 5s, water with a capacity of 1 / 10 of the effective volume of the sample and a temperature of (20±2)℃ is poured into the sample at one time, and after the test, the sample is checked for cracks; the experimental results show that the product is not cracked at 450℃-20℃ once, which meets the national standard.

[0025] (2)Cooking ceramic products by leakage detection: the product is filled with water to the cover edge and left for 2h±5min, and the product bottom has no water leakage mark.

[0026] (3)Cooking ceramic products by lead and cadmium leaching detection: the lead leaching amount is determined according to GB 31604.34; the cadmium leaching amount is determined according to GB 31604.24; the experimental results show that the lead and cadmium leaching amount is zero.

[0027] (4)Cooking ceramic products by microwave oven adaptability test: according to GB / T 27587; the experimental results show that the product is not cracked and no electric arc is generated once.

[0028] The glaze self-generating cooking ceramic blank and its preparation and use method, the used potassium feldspar, wood cellar soil, Luchuan clay and calcined muscovite are all locally produced, and the waste mullite shed board powder is the waste material eliminated in production, so that the local resources and production waste are fully utilized, and the production cost is greatly reduced; the principle is that: mainly using the special characteristics of high iron content and sintering of the local wood cellar soil, combining with special process, and strictly controlling through the kiln firing process, under the specific high temperature and time, the iron oxide in the wood cellar soil in the clay reacts with potassium feldspar, sodium feldspar and fused quartz to generate a thin glaze-like glaze attached to the surface of the product, so that the cooking ceramic product has glaze luster without glazing, the surface of the cooking ceramic product is smooth and bright, the thermal shock resistance is good, the lead and cadmium leaching is zero, the product is suitable for electric heating and open flame heating, no leakage, and suitable for microwave oven, high in scientific and technological content, and strong in difficult imitation.

[0029] The glaze self-generating cooking ceramic blank and its preparation and use method, the firing of the cooking ceramic product is sequentially subjected to a low temperature stage, a first medium temperature stage, a second medium temperature stage, a high temperature stage, a rapid cooling stage, a product slow cooling stage and a natural cooling stage, the firing process is strictly controlled, the iron oxide in the wood cellar soil in the clay reacts with potassium feldspar, sodium feldspar and fused quartz to generate a thin glaze-like glaze attached to the surface of the product, the glaze-like glaze has better adhesion effect, the thermal shock resistance test of the cooking ceramic product shows that the product is not cracked at 650℃-20℃ heat exchange once.

[0030] Drawings

[0031] Figure 1 is the product diagram of the glazed self-generating cooking ceramic blank in the embodiment 1 of the present application;

[0032] Figure 2 is the product diagram of the glazed self-generating cooking ceramic blank in the embodiment 2 of the present application;

[0033] Figure 3 is the product diagram of the glazed self-generating cooking ceramic blank in the embodiment 3 of the present application;

[0034] Figure 4 is the product diagram of the glazed self-generating cooking ceramic blank in the embodiment 4 of the present application;

[0035] Figure 5 is the product diagram of the glazed self-generating cooking ceramic blank in the embodiment 5 of the present application;

[0036] Figure 6 is the product diagram of the glazed self-generating cooking ceramic blank in the embodiment 6 of the present application. DETAILED DESCRIPTION

[0037] The present application is a glazed self-generating cooking ceramic blank and its preparation and use method, the fused quartz can be directly purchased on the market; the chemical composition of the glazed self-generating cooking ceramic blank is as follows: 67.15-67.26% of silicon oxide, 17.11-17.33% of aluminum oxide, 5.82-5.99% of iron oxide, 0.61-0.73% of titanium dioxide, 0.55-0.63% of calcium oxide, 3.11-3.27% of magnesium oxide, 1.76-1.84% of potassium oxide, 0.48-0.53% of sodium oxide, 2.73-2.88% of loss on ignition, and the total is 100%.

[0038] The chemical composition of the potassium feldspar in Hezhou, Guangxi is as follows: 69.08% of silicon oxide, 17.63% of aluminum oxide, 0.12% of iron oxide, 0.01% of titanium dioxide, 0.51% of calcium oxide, 0.13% of magnesium oxide, 10.25% of potassium oxide, 2.21% of sodium oxide, and 0.06% of loss on ignition.

[0039] The chemical composition of the calcined smooth talc in Wuming, Guangxi is as follows: 64.05% of silicon oxide, 0.12% of aluminum oxide, 0.05% of iron oxide, 0.02% of titanium dioxide, 5.16% of calcium oxide, 30.15% of magnesium oxide, 0.16% of potassium oxide, 0.18% of sodium oxide, and 0.11% of loss on ignition.

[0040] The chemical composition of the Luchuan black mud in Guangxi is: silicon oxide 51.86%, aluminum oxide 33.4%, iron oxide 2.12%, titanium dioxide 0.95%, calcium oxide 0.11%, magnesium oxide 0.06%, potassium oxide 1.02%, sodium oxide 0.35%, and loss on ignition 10.13%;

[0041] The chemical composition of the waste mullite shelf board powder is: silicon oxide 37.0%, aluminum oxide 60.64%, iron oxide 1.18%, titanium dioxide 0.76%, calcium oxide 0.13%, magnesium oxide 0.02%, potassium oxide 0.12%, and sodium oxide 0.15%;

[0042] The chemical composition of the wood cave soil in the Lingshan Town of Rongxian County in Guangxi is: silicon oxide 64.86%, aluminum oxide 7.52%, iron oxide 21.12%, titanium dioxide 1.56%, calcium oxide 0.11%, magnesium oxide 0.02%, potassium oxide 1.21%, sodium oxide 0.45%, and loss on ignition 3.15%.

[0043] Any feature in the foregoing description is not to be taken as essential unless it is expressly stated to be essential. In other words, use of the words "only" or "exactly" restricts that feature to the feature described or claimed but does not exclude additional, unrecited features.

[0044] Example 1: (respectively preparing a small ceramic cooker with a capacity of 800 ml, a medium ceramic cooker with a capacity of 1500 ml, and a large ceramic cooker with a capacity of 5000 ml)

[0045] A glazed autogenous cooking ceramic blank, which is composed of the following components in parts by weight: 9 parts of potash feldspar from Hezhou in Guangxi, 9 parts of calcined soapstone from Wuming in Guangxi, 17 parts of black mud from Luchuan in Guangxi, 10 parts of waste mullite shelf board powder, 22 parts of fused quartz, and 25 parts of wood cave soil from the Lingshan Town of Rongxian County in Guangxi;

[0046] The potash feldspar from Hezhou in Guangxi is produced in Hezhou City in Guangxi; the calcined soapstone from Wuming in Guangxi is produced in Wuming District of Nanning City in Guangxi; the black mud from Luchuan in Guangxi is produced in Luchuan County of Yulin City in Guangxi; the waste mullite shelf board powder is a waste material produced during the production of mullite shelf board; and the wood cave soil from the Lingshan Town of Rongxian County in Guangxi is produced in the wood cave village of the Lingshan Town of Rongxian County in Guangxi.

[0047] A preparation method of a glazed autogenous cooking ceramic blank, which comprises the following steps:

[0048] 1) According to the formula of the glazed autogenous cooking ceramic blank, each component of the glazed autogenous cooking ceramic blank is weighed to obtain a mixed raw material;

[0049] 2) Put the mixed raw materials into a wet ball mill, ball mill, put the slurry, pass through a 60 mesh screen, and control the glaze self-cooking ceramic blank fineness to be 1.2-2.0 wt% on a 1000 mesh screen, to obtain the glaze self-cooking ceramic blank.

[0050] A use method of the glaze self-cooking ceramic blank, comprising the following steps:

[0051] (1) Take the glaze self-cooking ceramic blank, filter and dehydrate, roll and form, respectively prepare a small ceramic cooking device blank with a capacity of 800 ml, a medium ceramic cooking device blank with a capacity of 1500 ml, and a large ceramic cooking device blank with a capacity of 5000 ml; wet the blank and smooth it to obtain a trimmed blank;

[0052] (2) Dry the trimmed blank at 60°C to obtain a dry blank;

[0053] (3) Check the appearance of the dry blank;

[0054] (4) Send the dry blank with no defects in appearance to a firing process to obtain a cooking ceramic finished product;

[0055] Firing control of the cooking ceramic finished product: 1) the low-temperature stage is a glaze blank preheating stage, the kiln temperature is 350°C, and the holding time is 2.8h; 2) the first medium-temperature stage is a low oxidation stage, the kiln temperature is 800°C, and the holding time is 2.5h; 3) the second medium-temperature stage is a strong oxidation stage, the kiln temperature is 980°C, and the holding time is 3.5h; 4) the high-temperature stage is a product porcelainization stage, the kiln temperature is 1260°C, and the holding time is 2.0h; 5) the rapid cooling stage is a product control key stage, the kiln temperature is 1280-800°C, and the holding time is 1.5h; 6) the product slow cooling stage, the kiln temperature is 800-580°C, and the holding time is 2.5h; 7) natural cooling, to complete the firing process.

[0056] The finished product detection statistics of the small ceramic cooking device with a capacity of 800 ml, the medium ceramic cooking device with a capacity of 1500 ml, and the large ceramic cooking device with a capacity of 5000 ml produced are as follows:

[0057] (1) The cooking ceramic product passes the thermal shock resistance test: the product does not crack at 650°C-20°C once, meeting the national standard.

[0058] (2) The cooking ceramic product passes the leakage test: the product is filled with water to the cover edge and stands for 2h±5min, and there is no water leakage mark at the bottom of the product.

[0059] (3)Cooking ceramic product lead and cadmium leaching detection: lead leaching amount determination is performed according to GB 31604.34; cadmium leaching amount determination is performed according to GB 31604.24; the experimental results show: zero lead and cadmium leaching.

[0060] (4)Cooking ceramic product microwave oven adaptability detection: performed according to GB / T 27587; the experimental results show: no crack and no electric arc generation in one cycle.

[0061] Example 2: (respectively preparing small ceramic cookers with a capacity of 800 ml, medium ceramic cookers with a capacity of 1500 ml, and large ceramic cookers with a capacity of 5000 ml)

[0062] A glazed autogenous cooking ceramic body, which is composed of the following components by weight: 11 parts of potash feldspar from Hezhou, Guangxi, 11 parts of calcined and cooked talc from Wuming, Guangxi, 19 parts of black mud from Luchuan, Guangxi, 14 parts of waste mullite shed board powder, 24 parts of fused quartz, and 29 parts of wood cellar soil from the town of Lingshan, Rongxian, Guangxi;

[0063] The potash feldspar from Hezhou, Guangxi, is potash feldspar produced in Hezhou, Guangxi; the calcined and cooked talc from Wuming, Guangxi, is calcined and cooked talc produced in Wuming District, Nanning, Guangxi; the black mud from Luchuan, Guangxi, is black mud produced in Luchuan County, Yulin, Guangxi; the waste mullite shed board powder is waste material generated during the production of mullite shed boards; and the wood cellar soil from the town of Lingshan, Rongxian, Guangxi, is clay produced in the village of Mujiaokou, Lingshan Town, Rongxian, Yulin, Guangxi.

[0064] A preparation method of a glazed autogenous cooking ceramic body, which comprises the following steps:

[0065] 1) According to the formula of the glazed autogenous cooking ceramic body, the components of the glazed autogenous cooking ceramic body are weighed to obtain mixed raw materials;

[0066] 2) The mixed raw materials are put into a wet ball mill for ball milling, slurry is placed, and the slurry is passed through a 60-mesh screen, and the fineness of the glazed autogenous cooking ceramic body is controlled to be between 1.2-2.0 wt% of the residue on the 100-mesh screen, thereby obtaining the glazed autogenous cooking ceramic body.

[0067] A use method of a glazed autogenous cooking ceramic body, which comprises the following steps:

[0068] (2) The glazed autogenous cooking ceramic body is taken, dehydrated by pressure filtration, and roll-pressed into shape to respectively prepare small ceramic cooker blanks with a capacity of 800 ml, medium ceramic cooker blanks with a capacity of 1500 ml, and large ceramic cooker blanks with a capacity of 5000 ml; the wet blank is smoothed by trimming to obtain trimmed blanks;

[0069] (2) The trimmed blanks are dried at 70°C to obtain dry blanks;

[0070] (3) Check the appearance of the dried blank;

[0071] (4) The dried blank with no defects in appearance is sent to the firing process, and the cooking ceramic product is obtained;

[0072] The firing control of the cooking ceramic product: 1) The low-temperature stage is the preheating stage of the glaze blank, the kiln temperature is 480℃, and the holding time is 3.0h; 2) The first medium-temperature stage is the low-oxidation stage, the kiln temperature is 870℃, and the holding time is 3.2h; 3) The second medium-temperature stage is the strong oxidation stage, the kiln temperature is 1050℃, and the holding time is 4.0h; 4) The high-temperature stage is the product porcelainization stage, the kiln temperature is 1280℃, and the holding time is 2.5h; 5) The rapid cooling stage is the key stage of product control, the kiln temperature is 1280-800℃, and the holding time is 2.0h; 6) The product slow cooling stage, the kiln temperature is 800-580℃, and the holding time is 3.0h; 7) Natural cooling, and the firing process is completed.

[0073] The detection statistics of the finished products of the small ceramic cookers with a capacity of 800ml, the medium ceramic cookers with a capacity of 1500ml, and the large ceramic cookers with a capacity of 5000ml produced are as follows:

[0074] (1) The cooking ceramic product is subjected to thermal shock resistance detection: the product does not crack at 650℃-20℃ once, meeting the national standard.

[0075] (2) The cooking ceramic product is subjected to leakage detection: the product is filled with water to the cover edge and left for 2h±5min, and there is no water leakage mark at the bottom of the product.

[0076] (3) The cooking ceramic product is subjected to lead and cadmium leaching detection: the lead leaching amount is determined according to GB 31604.34, and the cadmium leaching amount is determined according to GB 31604.24; the experimental results show that the lead and cadmium leaching amounts are zero.

[0077] (4) The cooking ceramic product is subjected to microwave oven adaptability detection: according to GB / T 27587; the experimental results show that there is no crack and no electric arc generated in one cycle.

[0078] Example 3: (respectively preparing small ceramic cookers with a capacity of 800ml, medium ceramic cookers with a capacity of 1500ml, and large ceramic cookers with a capacity of 5000ml)

[0079] A glaze self-generating cooking ceramic blank, which is composed of the following components in parts by weight: 10 parts of potash feldspar from Hezhou, Guangxi, 10 parts of calcined muscovite from Wuming, Guangxi, 18 parts of black mud from Luchuan, Guangxi, 12 parts of waste mullite shed board powder, 23 parts of fused quartz, and 27 parts of wood cellar soil from Lingshan Town, Rongxian County, Guangxi;

[0080] The Guangxi Hezhou potash feldspar is potash feldspar produced in Hezhou City, Guangxi; the Guangxi Wuming calcined mica is calcined mica produced in Wuming District, Nanning City, Guangxi; the Guangxi Luchuan black mud is black mud produced in Luchuan County, Yulin City, Guangxi; the waste mullite shed board powder is waste produced in the production of mullite shed board; and the Guangxi Rongxian Lingshan Town wood cellar clay is clay produced in the Rongxian Lingshan Town wood cellar of Rongxian County, Yulin City, Guangxi.

[0081] A preparation method of a glazed autogenous cooking ceramic blank, comprising the following steps:

[0082] 1) According to the formula of the glazed autogenous cooking ceramic blank, the components of the glazed autogenous cooking ceramic blank are weighed to obtain mixed raw materials;

[0083] 2) The mixed raw materials are put into a wet ball mill for ball milling, slurry is discharged, and the slurry is passed through a 60-mesh screen, and the fineness of the glazed autogenous cooking ceramic blank is controlled to be 1.2-2.0 wt% on a 1,000-mesh screen, thereby obtaining the glazed autogenous cooking ceramic blank.

[0084] A use method of a glazed autogenous cooking ceramic blank, comprising the following steps:

[0085] (3) The glazed autogenous cooking ceramic blank is taken, dehydrated by pressure filtration, and roll-pressed into shape to respectively prepare a small ceramic cooking device blank with a capacity of 800 ml, a medium ceramic cooking device blank with a capacity of 1500 ml, and a large ceramic cooking device blank with a capacity of 5000 ml; the wet blank is smoothed to obtain a finished blank;

[0086] (2) The finished blank is dried at 65°C to obtain a dried blank;

[0087] (3) The appearance of the dried blank is checked;

[0088] (4) The dried blank with no defects in appearance is sent to a firing process, thereby obtaining a cooking ceramic finished product;

[0089] The firing control of the cooking ceramic finished product is as follows: 1) the low-temperature stage is a preheating stage of the glazed blank, the kiln temperature is 380°C, and the holding time is 2.9 h; 2) the first medium-temperature stage is a low-oxidation stage, the kiln temperature is 850°C, and the holding time is 2.8 h; 3) the second medium-temperature stage is a strong oxidation stage, the kiln temperature is 1000°C, and the holding time is 3.7 h; 4) the high-temperature stage is a product porcelainization stage, the kiln temperature is 1270°C, and the holding time is 2.2 h; 5) the rapid cooling stage is a key stage for product control, the kiln temperature is 1280-800°C, and the holding time is 1.8 h; 6) the product slow cooling stage, the kiln temperature is 800-580°C, and the holding time is 2.8 h; 7) natural cooling, thereby completing the firing process.

[0090] The production of the small ceramic cookers with a capacity of 800 ml, the medium ceramic cookers with a capacity of 1500 ml and the large ceramic cookers with a capacity of 5000 ml are tested as follows:

[0091] (1) The cooking ceramic product is subjected to thermal shock resistance test: the product is not cracked once at 650℃-20℃, which meets the national standard.

[0092] (2) The cooking ceramic product is subjected to leakage test: the product is filled with water to the cover edge and is kept for 2h±5min, and there is no water leakage mark at the bottom of the product.

[0093] (3) The cooking ceramic product is subjected to lead and cadmium leaching test: the lead leaching amount is determined according to GB 31604.34, and the cadmium leaching amount is determined according to GB 31604.24; the experimental results show that the lead and cadmium leaching amounts are zero.

[0094] (4) The cooking ceramic product is subjected to microwave oven adaptability test according to GB / T 27587; the experimental results show that the product is not cracked once and no electric arc is generated.

[0095] Example 4: (preparation of small ceramic cookers with a capacity of 800 ml, medium ceramic cookers with a capacity of 1500 ml and large ceramic cookers with a capacity of 5000 ml, respectively)

[0096] A glazed autogenous cooking ceramic body, which is composed of the following components in parts by weight: 9 parts of potash feldspar from Hezhou, Guangxi, 9 parts of calcined talc from Wuming, Guangxi, 17 parts of black mud from Luchuan, Guangxi, 10 parts of waste mullite shed board powder, 22 parts of fused quartz, and 25 parts of wood cellar clay from the town of Lingshan, Rongxian, Guangxi;

[0097] The potash feldspar from Hezhou, Guangxi is produced in Hezhou City, Guangxi; the calcined talc from Wuming, Guangxi is produced in Wuming District, Nanning City, Guangxi; the black mud from Luchuan, Guangxi is produced in Luchuan County, Yulin City, Guangxi; the waste mullite shed board powder is the waste material produced in the production of mullite shed board; and the wood cellar clay from the town of Lingshan, Rongxian, Guangxi is produced in the wood cellar village of Lingshan Town, Rongxian County, Yulin City, Guangxi.

[0098] A preparation method of a glazed autogenous cooking ceramic body, which comprises the following steps:

[0099] 1) According to the formula of the glazed autogenous cooking ceramic body, the components of the glazed autogenous cooking ceramic body are weighed to obtain mixed raw materials;

[0100] 2) The mixed raw materials are put into a wet ball mill for ball milling, slurry is put, and the slurry is passed through a 60-mesh screen, and the fineness of the glazed autogenous cooking ceramic body is controlled to be 1.2-2.0wt% in a 10,000-mesh sieve residue, thereby obtaining the glazed autogenous cooking ceramic body.

[0101] A method for using a glazed self-generating cooking ceramic blank, comprising the following steps:

[0102] (4) Take the glazed self-generating cooking ceramic blank, filter and dehydrate, roll and form, respectively prepare small ceramic cooking device blanks with a capacity of 800 ml, medium ceramic cooking device blanks with a capacity of 1500 ml, and large ceramic cooking device blanks with a capacity of 5000 ml; wet trim the blanks to smooth, and obtain trimmed blanks;

[0103] (2) Dry the trimmed blanks at 60°C to obtain dry blanks;

[0104] (3) Check the appearance of the dry blanks;

[0105] (4) Send the dry blanks with no defects in appearance to a firing process, and obtain cooking ceramic finished products; the firing temperature is controlled at 1260-1280°C, the firing is performed in an oxidizing atmosphere, and the firing period is 15 hours.

[0106] The finished product detection conditions of the small ceramic cooking device with a capacity of 800 ml, the medium ceramic cooking device with a capacity of 1500 ml, and the large ceramic cooking device with a capacity of 5000 ml produced are as follows:

[0107] (1) The cooking ceramic product passes the thermal shock resistance test: the product does not crack at 450°C-20°C once, meeting the national standard.

[0108] (2) The cooking ceramic product passes the leakage test: the product is filled with water to the cover edge and left for 2h±5min, and there is no water leakage mark at the bottom of the product.

[0109] (3) The cooking ceramic product passes the lead and cadmium elution test: the lead elution amount is determined according to GB 31604.34, and the cadmium elution amount is determined according to GB 31604.24; the experimental results show that the lead and cadmium elution amounts are zero.

[0110] (4) The cooking ceramic product passes the microwave oven adaptability test: the test is performed according to GB / T 27587; the experimental results show that the product does not crack and no electric arc is generated once.

[0111] Example 5: (respectively prepare small ceramic cooking devices with a capacity of 800 ml, medium ceramic cooking devices with a capacity of 1500 ml, and large ceramic cooking devices with a capacity of 5000 ml)

[0112] A glazed self-generating cooking ceramic blank, which is composed of the following components in parts by weight: 11 parts of potash feldspar from Hezhou, Guangxi, 11 parts of calcined soapstone from Wuming, Guangxi, 19 parts of black mud from Luchuan, Guangxi, 14 parts of waste mullite shed board powder, 24 parts of fused quartz, and 29 parts of wood cellar soil from Lingshan Town, Rongxian County, Guangxi;

[0113] The Guangxi Hezhou potash feldspar is potash feldspar produced in Hezhou City, Guangxi; the Guangxi Wuming calcined steatite is calcined steatite produced in Wuming District, Nanning City, Guangxi; the Guangxi Luchuan black mud is black mud produced in Luchuan County, Yulin City, Guangxi; the waste mullite shelf board powder is waste produced in the production of mullite shelf board; and the Guangxi Rongxian Lingshan Town wood cellar clay is clay produced in the wood cellar of Lingshan Town, Rongxian County, Yulin City, Guangxi.

[0114] A preparation method of a glazed autogenous cooking ceramic blank, comprising the following steps:

[0115] 1) According to the formula of the glazed autogenous cooking ceramic blank, the components of the glazed autogenous cooking ceramic blank are weighed to obtain mixed raw materials;

[0116] 2) The mixed raw materials are put into a wet ball mill for ball milling, slurry is discharged, and the slurry is passed through a 60-mesh screen, and the fineness of the glazed autogenous cooking ceramic blank is controlled to be 1.2-2.0 wt% on a 1,000-mesh screen, thereby obtaining the glazed autogenous cooking ceramic blank.

[0117] A use method of a glazed autogenous cooking ceramic blank, comprising the following steps:

[0118] (5) The glazed autogenous cooking ceramic blank is taken, dehydrated by pressure filtration, and roll-pressed into shape to respectively prepare a small ceramic cooking device blank with a capacity of 800 ml, a medium ceramic cooking device blank with a capacity of 1500 ml, and a large ceramic cooking device blank with a capacity of 5000 ml; the wet blank is smoothed to obtain a finished blank;

[0119] (2) The finished blank is dried at 70°C to obtain a dried blank;

[0120] (3) The appearance of the dried blank is checked;

[0121] (4) The dried blank with no defects in appearance is sent to a firing process, and a cooking ceramic finished product is obtained; the firing temperature is controlled to be 1260-1280°C, the firing is performed in an oxidizing atmosphere, and the firing period is 15 hours;

[0122] The finished products of the small ceramic cooking device with a capacity of 800 ml, the medium ceramic cooking device with a capacity of 1500 ml, and the large ceramic cooking device with a capacity of 5000 ml produced are detected and the results are as follows:

[0123] (1) The cooking ceramic product is detected for thermal shock resistance: the product does not crack at 450°C-20°C for one time, which meets the national standard.

[0124] (2) The cooking ceramic product is detected for leakage: the product is filled with water to the cover edge and is left to stand for 2h±5min, and there is no water leakage mark at the bottom of the product.

[0125] (3)Cooking ceramic product lead and cadmium leaching detection: lead leaching amount determination is performed according to GB 31604.34; cadmium leaching amount determination is performed according to GB 31604.24; the experimental results show: zero lead and cadmium leaching.

[0126] (4)Cooking ceramic product microwave oven adaptability detection: performed according to GB / T 27587; the experimental results show: no crack and no electric arc generation in one cycle.

[0127] Example 6: (respectively preparing small ceramic cookers with a capacity of 800ml, medium ceramic cookers with a capacity of 1500ml, large ceramic cookers with a capacity of 5000ml)

[0128] A glazed autogenous cooking ceramic body, which is composed of the following components in parts by weight: 10 parts of potash feldspar from Hezhou, Guangxi; 10 parts of calcined and cooked talc from Wuming, Guangxi; 18 parts of black mud from Luchuan, Guangxi; 12 parts of waste mullite shed board powder; 23 parts of fused quartz; and 27 parts of wood cellar soil from the town of Lingshan, Rongxian, Guangxi.

[0129] The potash feldspar from Hezhou, Guangxi is potash feldspar produced in Hezhou, Guangxi; the calcined and cooked talc from Wuming, Guangxi is calcined and cooked talc produced in Wuming District, Nanning, Guangxi; the black mud from Luchuan, Guangxi is black mud produced in Luchuan County, Yulin, Guangxi; the waste mullite shed board powder is waste material produced in the production of mullite shed board; and the wood cellar soil from the town of Lingshan, Rongxian, Guangxi is clay produced in the wood cellar village of Lingshan Town, Rongxian, Yulin, Guangxi.

[0130] A preparation method of a glazed autogenous cooking ceramic body, which comprises the following steps:

[0131] 1) According to the formula of the glazed autogenous cooking ceramic body, the components of the glazed autogenous cooking ceramic body are weighed to obtain mixed raw materials;

[0132] 2) The mixed raw materials are put into a wet ball mill for ball milling, slurry is placed, and the slurry is passed through a 60-mesh screen, and the fineness of the glazed autogenous cooking ceramic body is controlled to be between 1.2-2.0wt% of the residue on the 100-mesh screen, thereby obtaining the glazed autogenous cooking ceramic body.

[0133] A use method of a glazed autogenous cooking ceramic body, which comprises the following steps:

[0134] (6) The glazed autogenous cooking ceramic body is taken, dehydrated by pressure filtration, and roll-pressed into shape to respectively prepare small ceramic cooker blanks with a capacity of 800ml, medium ceramic cooker blanks with a capacity of 1500ml, and large ceramic cooker blanks with a capacity of 5000ml; the wet blank is smoothed to obtain a finished blank;

[0135] (2) The finished blank is dried at 65°C to obtain a dried blank;

[0136] (3) Check the appearance of the dried blank;

[0137] (4) The dried blank with no defects in appearance is sent to the firing process, and the cooking ceramic product is obtained; the firing temperature is controlled at 1260-1280°C, the firing is carried out in an oxidizing atmosphere, and the firing period is 15 hours;

[0138] The detection of the finished products of the small ceramic cookers with a capacity of 800 ml, the medium ceramic cookers with a capacity of 1500 ml, and the large ceramic cookers with a capacity of 5000 ml produced is as follows:

[0139] (1) The cooking ceramic product is subjected to thermal shock resistance detection: the product does not crack at 450°C-20°C once, which meets the national standard.

[0140] (2) The cooking ceramic product is subjected to leakage detection: the product is filled with water to the cover edge and left for 2h±5min, and there is no water leakage mark at the bottom of the product.

[0141] (3) The cooking ceramic product is subjected to lead and cadmium leaching detection: the determination of lead leaching amount is carried out according to GB 31604.34, and the determination of cadmium leaching amount is carried out according to GB 31604.24; the experimental results show that the lead and cadmium leaching amounts are zero.

[0142] (4) The cooking ceramic product is subjected to microwave oven adaptability detection: GB / T 27587 is executed; the experimental results show that there is no crack and no electric arc generation in one cycle.

[0143] Comparative Example 1: (respectively preparing small ceramic cookers with a capacity of 800 ml, medium ceramic cookers with a capacity of 1500 ml, and large ceramic cookers with a capacity of 5000 ml)

[0144] A glazed self-generating cooking ceramic blank, which is composed of the following components in parts by weight: 10 parts of potassium feldspar, 10 parts of calcined muscovite, 18 parts of black clay, 12 parts of waste mullite shed board powder, 23 parts of quartz, and 27 parts of clay.

[0145] A preparation method of a glazed self-generating cooking ceramic blank, comprising the following steps:

[0146] 1) According to the formula of the glazed self-generating cooking ceramic blank, the components of the glazed self-generating cooking ceramic blank are weighed to obtain a mixed raw material;

[0147] 2) The mixed raw material is put into a wet ball mill for ball milling, slurry is put, and the slurry is passed through a 60-mesh screen, and the fineness of the glazed self-generating cooking ceramic blank is controlled between 1.2-2.0wt% of the residue on the million-pore screen, thereby obtaining the glazed self-generating cooking ceramic blank.

[0148] A use method of a glazed self-generating cooking ceramic blank, comprising the following steps:

[0149] (7) Take the glaze self-cooking ceramic blank, filter dewatering, rolling forming, respectively, to prepare small ceramic cooking device blank pieces with a capacity of 800ml, medium ceramic cooking device blank pieces with a capacity of 1500ml, large ceramic cooking device blank pieces with a capacity of 5000ml; wet repair blank piece smooth, get the finished blank piece;

[0150] (2) Dry the finished blank piece at 65℃, get the dry blank piece;

[0151] (3) Check the appearance of the dry blank piece;

[0152] (4) The dry blank piece with no defects in appearance is sent to the firing process, and the cooking ceramic finished product is obtained;

[0153] The firing control of the cooking ceramic finished product: 1) The low-temperature stage is the glaze blank preheating stage, the kiln temperature is 380℃, and the holding time is 2.9h; 2) The first medium-temperature stage is the low-oxidation stage, the kiln temperature is 850℃, and the holding time is 2.8h; 3) The second medium-temperature stage is the strong oxidation stage, the kiln temperature is 1000℃, and the holding time is 3.7h; 4) The high-temperature stage is the product porcelainization stage, the kiln temperature is 1270℃, and the holding time is 2.2h; 5) The rapid cooling stage is the key stage of product control, the kiln temperature is 1280-800℃, and the holding time is 1.8h; 6) The product slow cooling stage, the kiln temperature is 800-580℃, and the holding time is 2.8h; 7) Natural cooling, and the firing process is completed.

[0154] The finished product detection statistics of the small ceramic cooking device with a capacity of 800ml, the medium ceramic cooking device with a capacity of 1500ml, and the large ceramic cooking device with a capacity of 5000ml produced are as follows:

[0155] (1) The cooking ceramic product is detected for thermal shock resistance: the product cracks once at 450℃-20℃, which does not meet the national standard.

[0156] (2) The cooking ceramic product is detected for leakage: the product is filled with water to the cover edge and left for 2h±5min, and there is no water leakage mark at the bottom of the product.

[0157] (3) The cooking ceramic product is detected for lead and cadmium leaching: the lead leaching amount is determined according to GB 31604.34, and the cadmium leaching amount is determined according to GB 31604.24; the experimental results show that the lead and cadmium leaching amount is zero.

[0158] (4) The cooking ceramic product is detected for microwave oven adaptability: according to GB / T 27587; the experimental results show that the product cracks once and no electric arc is generated, which does not meet the national standard.

[0159] Comparative Example 2: (respectively prepare small ceramic cookers with a capacity of 800 ml, medium ceramic cookers with a capacity of 1500 ml, large ceramic cookers with a capacity of 5000 ml)

[0160] A glazed self-generating cooking ceramic blank, which is composed of the following components by weight: 11 parts of potassium feldspar, 11 parts of cooked talc, 19 parts of black clay, 14 parts of waste mullite shed board powder, 24 parts of quartz, and 29 parts of clay.

[0161] A preparation method of a glazed self-generating cooking ceramic blank, comprising the following steps:

[0162] 1) According to the formula of the glazed self-generating cooking ceramic blank, weigh each component to obtain a mixed raw material;

[0163] 2) Put the mixed raw material into a wet ball mill for ball milling, put the slurry, and pass through a 60-mesh screen. The fineness of the glazed self-generating cooking ceramic blank is controlled between 1.2-2.0 wt% of the residue on the 100-mesh screen, and the glazed self-generating cooking ceramic blank is obtained.

[0164] A use method of a glazed self-generating cooking ceramic blank, comprising the following steps:

[0165] (8) Take the glazed self-generating cooking ceramic blank, filter and dehydrate, and roll and form to respectively prepare small ceramic cooker blank pieces with a capacity of 800 ml, medium ceramic cooker blank pieces with a capacity of 1500 ml, and large ceramic cooker blank pieces with a capacity of 5000 ml; wet trim the blank pieces to make them smooth, and obtain trimmed blank pieces;

[0166] (2) Dry the trimmed blank pieces at 65°C to obtain dry blank pieces;

[0167] (3) Check the appearance of the dry blank pieces;

[0168] (4) Send the dry blank pieces with no defects to the firing process, and obtain cooking ceramic finished products;

[0169] Firing control of the cooking ceramic finished products: 1) The low-temperature stage is a preheating stage of the glazed blank, the kiln temperature is 380°C, and the holding time is 2.9 h; 2) The first medium-temperature stage is a low-oxidation stage, the kiln temperature is 850°C, and the holding time is 2.8 h; 3) The second medium-temperature stage is a strong oxidation stage, the kiln temperature is 1000°C, and the holding time is 3.7 h; 4) The high-temperature stage is a product porcelainization stage, the kiln temperature is 1270°C, and the holding time is 2.2 h; 5) The rapid cooling stage is a key stage for product control, the kiln temperature is 1280-800°C, and the holding time is 1.8 h; 6) The product slow cooling stage, the kiln temperature is 800-580°C, and the holding time is 2.8 h; 7) Natural cooling, and the firing process is completed.

[0170] The production of the small ceramic cookers with a capacity of 800 ml, the medium ceramic cookers with a capacity of 1500 ml, and the large ceramic cookers with a capacity of 5000 ml are tested as follows:

[0171] (1) The cooking ceramic product is subjected to thermal shock resistance test: the product cracks once at 450°C-20°C, which does not meet the national standard.

[0172] (2) The cooking ceramic product is subjected to leakage test: the product is filled with water to the cover edge and left for 2h±5min, and there is no water leakage mark at the bottom of the product.

[0173] (3) The cooking ceramic product is subjected to lead and cadmium leaching test: the lead leaching amount is determined according to GB 31604.34, and the cadmium leaching amount is determined according to GB 31604.24; the experimental results show that the lead and cadmium leaching amounts are zero.

[0174] (4) The cooking ceramic product is subjected to microwave oven adaptability test: the test is performed according to GB / T 27587; the experimental results show that the product cracks once and no electric arc is generated, which does not meet the national standard.

[0175] The product of Comparative Example 1-2 does not have a thin glaze-like glaze attached to the surface of the product. The test results of the products of Example 1-6 and Comparative Example 1-2 show that the potassium feldspar, wood cellar soil, Luchuan clay, and calcined muscovite are all locally produced, and the waste mullite shed board powder is a waste material discarded in production. The local resources and production waste are fully utilized to greatly reduce the production cost. The principle is as follows: the high-iron and sintered characteristics of the wood cellar soil are combined with a special process, and the firing process in the kiln is strictly controlled. At a specific high temperature and time, the iron oxide in the wood cellar soil in the clay reacts with potassium feldspar, sodium feldspar, and fused quartz to form a thin glaze-like glaze attached to the surface of the product. The cooking ceramic product has a glaze-like glaze without glazing, a smooth surface, good thermal shock resistance, no lead and cadmium leaching, adaptability to electric heating and open fire heating, no leakage, and adaptability to microwave ovens. The cooking ceramic product has high technological content and strong difficulty in imitation. The firing of the cooking ceramic product is sequentially subjected to a low-temperature stage, a first medium-temperature stage, a second medium-temperature stage, a high-temperature stage, a rapid cooling stage, a product slow cooling stage, and a natural cooling stage. The firing process is strictly controlled. The iron oxide in the wood cellar soil in the clay reacts with potassium feldspar, sodium feldspar, and fused quartz to form a thin glaze-like glaze attached to the surface of the product. The glaze-like glaze has a better attachment effect. The cooking ceramic product has good thermal shock resistance. The product does not crack once at 650°C-20°C thermal exchange.

[0176] The foregoing description of specific exemplary embodiments of the application has been presented for the purposes of illustration and description. It is not intended to be exhaustive or to limit the application to the precise forms disclosed, and obviously many modifications and variations are possible in light of the above teaching. It is intended that the scope of the application be limited not with this detailed description, but rather by the claims appended hereto.

Claims

1. A glazed autogenous cooking ceramic blank, characterized in that, The glaze self-generating cooking ceramic blank is composed of the following components in parts by weight: 9-11 parts of potash feldspar from Hezhou, Guangxi, 9-11 parts of calcined and cooked talc from Wuming, Guangxi, 17-19 parts of black mud from Luchuan, Guangxi, 10-14 parts of waste mullite shed board powder, 22-24 parts of fused quartz, and 25-29 parts of wood cellar soil from Lingshan Town, Rongxian County, Guangxi; The potash feldspar from Hezhou, Guangxi is produced in Hezhou City, Guangxi; the calcined and cooked talc from Wuming, Guangxi is produced in Wuming District, Nanning City, Guangxi; the black mud from Luchuan, Guangxi is produced in Luchuan County, Yulin City, Guangxi; the waste mullite shed board powder is waste material produced in the production of mullite shed board; and the wood cellar soil from Lingshan Town, Rongxian County, Guangxi is produced in Mujiaokou Village, Lingshan Town, Rongxian County, Yulin City, Guangxi; The glaze self-generating cooking ceramic blank has a chemical composition of 67.15-67.26% of silicon oxide, 17.11-17.33% of aluminum oxide, 5.82-5.99% of iron oxide, 0.61-0.73% of titanium dioxide, 0.55-0.63% of calcium oxide, 3.11-3.27% of magnesium oxide, 1.76-1.84% of potassium oxide, 0.48-0.53% of sodium oxide, 2.73-2.88% of loss on ignition, and 100% in total. The waste mullite shed board powder has a chemical composition of 37.0% of silicon oxide, 60.64% of aluminum oxide, 1.18% of iron oxide, 0.76% of titanium dioxide, 0.13% of calcium oxide, 0.02% of magnesium oxide, 0.12% of potassium oxide, and 0.15% of sodium oxide. The glaze self-generating cooking ceramic blank is fired at a temperature of 1260-1280°C in an oxidizing atmosphere, and the firing cycle is 15 hours.

2. A glazed autogenous cookware ceramic body according to claim 1, characterized in that, The glaze self-generating cooking ceramic blank is composed of the following components in parts by weight: 10-11 parts of potash feldspar from Hezhou, Guangxi, 10-11 parts of calcined and cooked talc from Wuming, Guangxi, 18-19 parts of black mud from Luchuan, Guangxi, 12-14 parts of waste mullite shed board powder, 23-24 parts of fused quartz, and 27-29 parts of wood cellar soil from Lingshan Town, Rongxian County, Guangxi.

3. The glazed autogenous cookware ceramic body of claim 1 wherein, The potash feldspar from Hezhou, Guangxi has a chemical composition of 69.08% of silicon oxide, 17.63% of aluminum oxide, 0.12% of iron oxide, 0.01% of titanium dioxide, 0.51% of calcium oxide, 0.13% of magnesium oxide, 10.25% of potassium oxide, and 2.21% of sodium oxide, and 0.06% of loss on ignition; and the calcined and cooked talc from Wuming, Guangxi has a chemical composition of 64.05% of silicon oxide, 0.12% of aluminum oxide, 0.05% of iron oxide, 0.02% of titanium dioxide, 5.16% of calcium oxide, 30.15% of magnesium oxide, 0.16% of potassium oxide, and 0.18% of sodium oxide, and 0.11% of loss on ignition.

4. The glazed autogenous cookware ceramic body of claim 1 wherein, The black mud from Luchuan, Guangxi has a chemical composition of 51.86% of silicon oxide, 33.4% of aluminum oxide, 2.12% of iron oxide, 0.95% of titanium dioxide, 0.11% of calcium oxide, 0.06% of magnesium oxide, 1.02% of potassium oxide, and 0.35% of sodium oxide, and 10.13% of loss on ignition.

5. The glazed autogenous cookware ceramic body of claim 1 wherein, The chemical composition of the wood cave soil in Ling Mountain Town, Rongxian County, Guangxi, is as follows: silicon oxide 64.86%, aluminum oxide 7.52%, iron oxide 21.12%, titanium dioxide 1.56%, calcium oxide 0.11%, magnesium oxide 0.02%, potassium oxide 1.21%, sodium oxide 0.45%, and loss on ignition 3.15%.

6. A method for the production of a glazed autogenous cooking ceramic body according to any one of claims 1-5, characterized in that, The method comprises the following steps: 1) according to the formula of the glaze autogenous cooking ceramic blank, the components of the glaze autogenous cooking ceramic blank are weighed to obtain mixed raw materials; 2) the mixed raw materials are put into a wet ball mill for ball milling, slurry is discharged, and the slurry is passed through a 60-mesh screen, and the fineness of the glaze autogenous cooking ceramic blank is controlled to be 1.2-2.0 wt% of the residue on the 100-mesh screen, thereby obtaining the glaze autogenous cooking ceramic blank.

7. A method of using a glazed autogenous-cooking ceramic body according to any one of claims 1-5, characterized in that, The method comprises the following steps: (1) the glaze autogenous cooking ceramic blank is subjected to pressure filtration and dehydration, and is rolled and formed, and the wet blank is smoothed to obtain a finished blank; (2) the finished blank is dried to obtain a dried blank; (3) the appearance of the dried blank is checked; (4) the dried blank without defects in appearance is sent to a firing process, thereby obtaining a cooking ceramic product.

8. A method of using a glazed autogenous cooking ceramic body according to claim 7, characterized in that, In the step (4), the firing control of the cooking ceramic product is as follows: 1) the low-temperature stage is a preheating stage of the glaze blank, the kiln temperature is 350-480 DEG C, and the holding time is 2.8-3.0 h; 2) the first medium-temperature stage is a low-oxidation stage, the kiln temperature is 800-870 DEG C, and the holding time is 2.5-3.2 h; 3) the second medium-temperature stage is a strong oxidation stage, the kiln temperature is 980-1050 DEG C, and the holding time is 3.5-4.0 h; 4) the high-temperature stage is a product porcelainization stage, the kiln temperature is 1260-1280 DEG C, and the holding time is 2.0-2.5 h; 5) the rapid cooling stage is a key stage for product control, the kiln temperature is 1280-800 DEG C, and the holding time is 1.5-2.0 h; 6) the product slow cooling stage, the kiln temperature is 800-580 DEG C, and the holding time is 2.5-3.0 h; and 7) natural cooling, thereby completing the firing process.

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