Disclosure of Invention
The invention aims to solve the technical problem of providing a method for manufacturing medical stone pottery, which breaks through the tradition that medical stone can not be fired at high temperature, solves the technical problem that the medical stone and the five-color soil can not be fired at high temperature simultaneously, can well fuse the five-color soil and the medical stone, and the medical stone pottery produced by using the special production method has bright luster, full color, strong transparency and hard texture and is accepted by vast users consistently.
In order to solve the technical problems, the invention adopts the following technical scheme:
a method for manufacturing medical stone pottery specifically comprises the following steps:
the first step is as follows: preparing a five-color soil raw material and a medical stone raw material;
the second step is that: blending raw materials;
the third step: presetting the shape of the pottery;
the fourth step: firing the pottery;
the fifth step: trimming and polishing;
and the second step of raw material blending: uniformly mixing 65-75 parts of fine five-color soil powder, 25-35 parts of medical stone powder and 1-3 parts of rock mixture to prepare pug for later use;
and firing the pottery in the fourth step: firing the pottery with the preset shape in the third step, wherein the firing method comprises the following steps: rising to 1100-1200 ℃ within 6-8 hours, keeping the temperature of 1100-1200 ℃ for 0.5-1.5 hours, opening a ventilation opening of the kiln, reducing the temperature to 90-110 ℃ within 16-18 hours, then opening a kiln door, reducing the temperature of the kiln to 30-50 ℃, and taking out of the kiln to obtain a crude pottery product;
and, the second step raw material blending: preparing mud from 70 parts of fine five-color soil powder, 28 parts of medical stone powder and 2 parts of rock mixture for later use;
and the rock mixture is shale, long rock and volcanic rock according to the weight ratio of 1-2: 1-2: 1-3 in proportion.
And, firing the fourth step pottery: firing the pottery with the preset shape in the third step, wherein the firing method comprises the following steps: raising the temperature to 1150 ℃ within 7 hours, keeping the temperature at 1150 ℃ for 1 hour, opening a ventilation port of the kiln, reducing the temperature to 100 ℃ within 17 hours, then opening a kiln door, reducing the temperature of the kiln to 40 ℃, and taking out of the kiln to obtain the crude pottery product.
Moreover, the raw materials of the colored soil are selected from raw ores of Hongxing village of Hongxing county of Yi' an county of Heilongjiang province, and the raw materials of the colored soil comprise one or more than two of black soil, purple sand and red soil; the Maifanitum raw material is selected from Maifanitum production area of Mount Yam in Heilongjiang province.
In addition, the first step of preparing the raw material of the wuweitu and the raw material of the medical stone comprises the following steps:
the preparation of the raw materials of the five-color soil is as follows:
(1) selecting raw materials, selecting one color or two or more colors of the five-color soil for later use;
(2) weathering of raw materials: the weathering scheme of the polychrome soil is that any one of the following schemes is selected according to different temperatures;
the first method comprises the following steps: when the outdoor temperature is 20-30 ℃, the outdoor sun-cured weathering is carried out, the sun-cured weathering time is 11-13 months, and during the sun-cured weathering, the daily temperature is 12: 00-2: 00, adding 1 time of water, wherein the water adding amount is 45-55% of the mass of the five-color soil;
and the second method comprises the following steps: when the outdoor temperature is higher than 30 ℃, the outdoor solar energy is used for carrying out the sun-cured weathering, the sun-cured weathering time is 11-13 months, and the sun-cured weathering time is 9: 00-10: 00 and 16: 00-17: 00, adding 1 time of water, wherein the water adding amount is 65-75% of the mass of the five-color soil;
after the multicolored soil is subjected to sun-drying weathering, grinding by a stone mill, drying in a kiln at the drying temperature of 40-80 ℃, and screening the dried multicolored soil into fine powder multicolored soil by using a 60-mesh or 80-mesh sieve, wherein the fine powder multicolored soil cannot pass through the 60-mesh or 80-mesh sieve and is continuously subjected to sun-drying weathering;
the medical stone is prepared from the following raw materials:
taking medical stone ore blocks, preliminarily crushing, adding water to soak and clean the medical stone ore blocks to remove salt and alkali, then grinding and filtering the medical stone ore blocks by using a ball mill to obtain fine powder of 80 meshes, and drying the fine powder for later use; the content of Maifanitum in the Maifanitum mineral block is higher than 90%.
And, the third step: presetting the shape of pottery:
the prepared pug is subjected to pottery preset shape, the pottery can be made into a required shape by hand or machine, the shape comprises an ashtray, a cup cover, a water cup, a teapot and kitchen utensils, the pottery after the preset shape is dried under the condition of cool and ventilated environment, and the pottery after the preset shape is dried and then checked to have no cracks, so that the pottery can be fired;
the fifth step is as follows: trimming and polishing:
and (3) taking the crude pottery product out of the kiln, cooling, grinding by using a finishing machine for finishing by using corundum, detecting that the original hardness of the five-color soil is reached, and polishing by using a polishing machine to obtain the finished medical stone pottery product.
And the manufacturing method of the medical stone pottery also comprises a water testing inspection step, wherein the water testing inspection step is to immerse the medical stone pottery finished product in water for 10-15 min, then take out the medical stone pottery finished product and observe the medical stone pottery finished product, and if the water on the medical stone pottery finished product is absorbed within 3min, the medical stone pottery finished product is qualified.
The invention has the following advantages:
1. the invention realizes that the medical stone can bear the high-temperature firing temperature of the pottery and can be tightly combined with the pottery to form a whole, the medical stone pottery ware which can contact food and cook is manufactured, the trace elements of the medical stone are released, the pottery keeps the original chemical stability, the sanitary indexes such as the dissolution amount of lead and manganese and the like meet the related standard requirements (the dissolution amount of lead, manganese, magnesium, iron and calcium is less than 0.001mg/L, and the dissolution amount of magnesium, iron and calcium is less than 0.1mg/L), the original characteristics of the five-color clay (purple sand) are kept, and the efficacy of the medical stone is improved. The problems of technical innovation and technical difficulty in the existing pottery industry are overcome. The medical stone pottery prepared by the invention is tested by the quality supervision and inspection of products in Qizihaer city: the sanitary indexes such as the elution amount of lead, manganese, magnesium, iron and calcium and the like meet the requirements of relevant standards (the elution amount of lead, manganese, magnesium, iron and calcium is less than 0.001mg/L, and the elution amount of magnesium, iron and calcium is less than 0.1mg/L), and the report numbers are as follows: s180972.
2. Through continuous efforts, the invention perfectly combines the five-color soil and the medical stone, and the product fired by the invention has bright luster, full color, strong transparency, uniform and hard texture, is consistently recognized by the broad masses of users, and can be produced in large batch. The teapot manufactured by the method does not lose tea fragrance and does not have cooked soup gas, the pot wall adsorbs the tea gas, the tea fragrance is also generated when boiling water is injected into the empty teapot for a long time, and simultaneously, the trace elements of the medical stone can be smoothly dissolved out, so that the health of a human body is improved.
3. The key point of the technology of the invention is the second step of raw material preparation and the fourth pottery firing process, which solves the technical problem that the medical stone and the five-color soil can not be fired at high temperature simultaneously, the melting point of the medical stone is more than 800 ℃, the melting point of the five-color soil is more than 1200 ℃, in order to enable the medical stone and the five-color soil to be fired together, a small amount of shale, feldspar and volcanic rock mixture is added in the second step of raw material preparation according to the proportion, the pottery is fired on the raw materials after the second step of raw material preparation, the firing temperature is 1100-1200 ℃, and the medical stone can not melt when fired under the temperature condition, can be perfectly fused with the five-color soil, and the medical stone pottery with strong transparency and uniform and hard texture is manufactured.
4. The medical stone raw material is selected from the medical stone of Mount mountain of Heilongjiang province, the content of the medical stone in the original ore reaches more than 90 percent, and the medical stone can be directly used without complex pretreatment processes such as purification, refining and the like; the raw material of the colored soil is selected from raw ore of Hongxing county of Yian county of Heilongjiang province; the selection of the raw materials makes full use of local unique resources, can use local materials, has the advantages of low cost and reliable quality, drives the development of local economy, and has certain social benefit.
5. The process can be simultaneously suitable for firing one or more than two of black soil, purple sand and red soil and medical stone together, and has wider application range.
Detailed Description
The present invention will be described in further detail with reference to examples, but the embodiments of the present invention are not limited thereto, and the scope of the present invention is not limited by the following examples.
The experimental methods used in the following examples are all conventional methods unless otherwise specified; the materials, reagents and the like used are commercially available unless otherwise specified.
Examples 1 to 5 were conducted according to the parameters and procedures shown in Table 2, comparative examples 1 to 4 were conducted according to the parameters and procedures shown in Table 1, and the results of the experiments are shown in Table 3.
The results of the experiments in Table 3 were analyzed in comparison as follows:
comparing example 1 with comparative example 1, it can be seen that: other conditions are kept consistent, if the firing temperature of the pottery is too low, the finished medical stone pottery product has water seepage, red brick color, no luster and sound, and does not meet the hardness requirement, the medical stone pottery body has fine cracks and is opaque, magnesium element is not dissolved out, trace elements do not meet the requirement, and the product is not qualified.
Comparing example 1 with comparative example 4, it can be seen that: other conditions are kept consistent, if the firing temperature of the pottery is too high, the finished medical stone pottery product shines, the medical stone pottery body has bubbles, the medical stone can be combined with pottery raw materials to react and form new crystals, trace elements cannot be dissolved out, the requirements are not met, and the product is not qualified.
The comparative analysis shows that the firing temperature of the pottery has influence on the water testing result, color, sound, hardness and trace element dissolution of the medical stone pottery finished product, and the proper firing temperature is an important guarantee for the quality of the medical stone pottery finished product. Through multiple experiments, the pottery firing temperature which does not affect the dissolution of trace elements and can ensure that the hardness, color and sound of the medical stone pottery finished product meet the requirements of the product is determined, namely the pottery firing temperature is 1100-1200 ℃, and the pottery firing temperature can not meet the requirements when the temperature is too high or too low.
Comparing example 2 with comparative example 2, it can be seen that: other conditions are kept consistent, and under the condition that the types of the added rocks are the same, the proportion of the rocks in the comparative example 2 is out of the range of the invention, so that the problems that the medical stone pottery has large cracks and cannot be fired and formed are caused, the importance of the proportion of the rocks is seen, and the proper type and proportion of the added rocks are one of the key factors for ensuring the quality of the finished medical stone pottery product.
Comparison of example 3 with comparative example 3 revealed that: other conditions are kept consistent, the proportion of the medical stone and the purple sand in the comparative example 3 is not equal, the medical stone pottery has water seepage, no luster, generates messy black spots, has muffled sound and is opaque, no trace elements are dissolved out, and the product is not qualified.
In conclusion, analysis shows that the key of ensuring the quality of the finished medical stone pottery products by a proper raw material blending and pottery firing method and changing any condition can directly influence the product quality, the invention finally determines the proper raw material blending and pottery firing method and the technological parameters of the steps of presetting the shape, finishing, polishing and the like of the pottery through hundreds of experiments and hard efforts, solves the technical problem that the medical stone and the five-color soil can not be fired at high temperature simultaneously, can well fuse the five-color soil and the medical stone, and the medical stone pottery produced by the special production method of the invention has bright luster, full color, extremely strong transparency and hard texture and is accepted by vast users consistently.