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CN-118108485-B - Preparation process of mixed multi-trace element functional ceramic

CN118108485BCN 118108485 BCN118108485 BCN 118108485BCN-118108485-B

Abstract

The invention relates to the technical field of ceramic preparation, in particular to a preparation process of mixed multi-trace element functional ceramic, which comprises the following steps of S1, extracting mineral substances containing multiple elements from carefully selected raw ores, S2, mixing the multiple elements extracted from the raw ores, converting the mixed mineral substances into multi-liquid state mixed liquor, S3, heating an untreated ceramic clay blank to 800 ℃, S4, placing the heated clay blank in a room to naturally cool to 30 ℃, S5, injecting the multi-liquid state mixed liquor prepared in the second step for multiple times by adopting an atomization method after cooling, airing after each injection, and carrying out injection for 3-5 times in total until the mixed liquor is completely absorbed into the clay blank. According to the invention, a plurality of microelements are uniformly introduced into the ceramic, so that the obtained functional ceramic has the characteristics of excellent strength, durability and abundant microelements, and is beneficial to human health.

Inventors

  • LIN YOUKUO
  • LIN JUNCHEN
  • Chi Linfengfeng

Assignees

  • 福建省三明市朴索陶瓷科技有限公司

Dates

Publication Date
20260505
Application Date
20240220

Claims (10)

  1. 1. The preparation process of the mixed multi-trace element functional ceramic is characterized by comprising the following steps of: s1, extracting mineral substances containing multiple elements from carefully selected raw ores; s2, mixing a plurality of elements extracted from raw ores and converting the elements into a multi-liquid state mixed solution; s3, heating the untreated ceramic clay blank to 800 ℃ at high temperature; s4, placing the heated adobe in a room to naturally cool to 30 ℃; S5, after the temperature is reduced, injecting the multi-liquid state mixed solution prepared in the second step for multiple times by adopting an atomization method, airing after each injection, and carrying out injection for 3-5 times in total until the mixed solution is completely absorbed into the adobe; s6, performing ultrasonic treatment on the atomized and injected adobe to promote deep penetration of trace elements; S7, irradiating the adobe by using infrared light, and improving the binding force between the trace elements and the adobe; and S8, performing secondary calcination on the treated adobe to form a multi-trace element functional ceramic finished product.
  2. 2. The process for preparing a mixed multi-trace element functional ceramic according to claim 1, wherein the step of extracting minerals containing a plurality of elements in the step S1 comprises: s11, selecting raw ore with the grain diameter of 1mm for further treatment by using a screening technology; S12, soaking the screened raw ore in a dilute sulfuric acid solution with the pH value of 2 for 12 hours so as to dissociate trace elements in the ore; S13, separating a solution containing trace elements by a centrifugal technology at a speed of 2000 revolutions per minute for 15 minutes; S14, diluting the solution to a ratio of 1:5 by using distilled water, and then further purifying by a reverse osmosis technology to obtain a mineral solution containing multiple elements.
  3. 3. The process for preparing the mixed multi-trace element functional ceramic according to claim 1, wherein the specific steps of mixing and converting the plurality of elements into the multi-liquid state in the step S2 are as follows: s21, taking out the mineral solution of the multiple elements obtained in the step S1, measuring the concentration of the mineral solution, and ensuring the concentration of the elements to be 10g/L; S22, mixing different element solutions according to the required element proportion and the volume ratio of 1:1, and keeping mixing for 20 minutes to form a mixed solution A; S23, adding 5-10% of a high polymer stabilizer which is carboxymethyl cellulose or pectin into the mixed solution A to enhance the stability of the liquid; s24, stirring the mixed solution A on a magnetic stirrer at a speed of 500 revolutions per minute for 1 hour to form a uniform liquid mixture B; And S25, slowly adding 5-8% of an emulsifying agent which is phospholipid or egg yolk lecithin into the liquid mixture B under the condition of maintaining the pH value to be 6, and continuously stirring for 45 minutes to enable the liquid mixture B to be converted into a multi-liquid state mixed solution.
  4. 4. The process for preparing the mixed multi-trace element functional ceramic according to claim 1, wherein the high-temperature heating step in the step S3 specifically comprises: s31, firstly ensuring that the dryness of the adobe reaches more than 95 percent, and placing the adobe in a resistance furnace; s32, slowly raising the temperature at the rate of 30 ℃ per hour until the internal and external temperatures of the adobe reach 800 ℃ uniformly; and S33, after reaching 800 ℃, maintaining the temperature and continuously heating for at least 1 hour so as to ensure that the microstructure change and chemical reaction in the soil blank are completed.
  5. 5. The process for preparing the mixed multi-trace element functional ceramic according to claim 1, wherein the step of naturally cooling the heated adobe in the room in the step S4 specifically comprises: S41, taking out the adobe heated at high temperature, and placing the adobe in an environment with the room temperature of 25 ℃ and the humidity of 55%; S42, using an insulation frame to ensure that direct contact of the adobe with other surfaces is minimized to promote uniform cooling; s43, monitoring the temperature of the adobe in real time by using thermal imaging to ensure that the adobe is uniformly and stably cooled to 30 ℃; and S44, avoiding any form of mechanical intervention or accelerated cooling in the whole cooling process so as to ensure the stability of the microstructure inside the adobe and avoid the formation of cracks on the surface.
  6. 6. The process for preparing the mixed multi-trace element functional ceramic according to claim 1, wherein the step of injecting the mixed liquid in a multi-liquid state by an atomization method in the step S5 specifically comprises: S51, using an atomization nozzle with the particle size of 4-6 microns to ensure that the mixed solution can form uniform tiny water drops; S52, setting the distance between the nozzle and the clay body within 15-20 cm to ensure that the atomized liquid uniformly covers the surface of the clay body; S53, adjusting the working pressure of the atomizing nozzle to be 2-3 bar and maintaining the flow rate to be 10-15 mL/min; s54, in the atomization process, ensuring that the indoor temperature is maintained at 20-25 ℃ and the relative humidity is 55-65%; and S55, atomizing each side face of the adobe in a rotating mode, wherein each treatment is carried out for 6 minutes, so as to ensure that the adobe fully absorbs the mixed liquid.
  7. 7. The process for preparing the mixed multi-trace element functional ceramic according to claim 1, wherein the ultrasonic treatment in the step S6 is performed at a frequency of 20-40kHz for a duration of 10-30 minutes.
  8. 8. The process for preparing the mixed multi-trace element functional ceramic according to claim 1, wherein the step of using infrared light irradiation in the step S7 is specifically: S71, selecting an infrared emitter, and setting the intensity and wavelength of infrared light to 890nm as a starting point; S72, adjusting the position and the angle of an infrared emitter according to the size and the shape of the adobe so as to ensure that the surface of the adobe is uniformly irradiated by infrared light; S73, starting infrared light irradiation, checking the temperature and state of the adobe every 30 minutes, ensuring that overheat or color change does not occur, and ensuring that no obvious drying or crystallization phenomenon exists on the surface of the adobe; and S74, immediately after the infrared light irradiation is finished, the adobe is moved to a place with good ventilation for cooling, and thermal stress caused by heat accumulation is prevented.
  9. 9. The process for preparing the mixed multi-trace element functional ceramic according to claim 1, wherein the secondary calcination step in the step S8 is specifically: S81, firstly placing the adobe into a calciner, and ensuring that the distance between the adobe is at least 5 cm so as to ensure that the heat is uniformly distributed and the mutual adhesion phenomenon can not occur; S82, setting the temperature rising rate of the calciner to 15 ℃ per minute until reaching the preset 1300 ℃; s83, after reaching the preset temperature, keeping the temperature and continuously calcining for 2 hours; S84, gradually reducing the temperature in the furnace after the secondary calcination is completed, and controlling the cooling rate at 8 ℃ per minute until the temperature of the adobe is reduced to the room temperature; And S85, taking out the adobe from the calciner, and placing the adobe in a well-ventilated place for natural cooling for at least 12 hours so as to ensure complete cooling and stabilization of the microstructure of the adobe.
  10. 10. The process for preparing a mixed multi-trace element functional ceramic according to any one of claims 1 to 9, wherein the mineral containing a plurality of elements comprises carbon, oxygen, hydrogen, nitrogen, potassium, sodium, calcium, magnesium, chlorine, sulfur, iron, iodine, copper, manganese, zinc, selenium, molybdenum, chromium, cobalt, nickel, fluorine, vanadium and tin.

Description

Preparation process of mixed multi-trace element functional ceramic Technical Field The invention relates to the technical field of ceramic preparation, in particular to a preparation process of mixed multi-trace element functional ceramic. Background Ceramic, which is an inorganic nonmetallic material formed by calcining at a specific temperature, has been widely used in various fields such as daily necessities, construction materials, electronic devices, etc. because of its excellent hardness, high temperature resistance, electrical insulation and corrosion resistance, most of the conventional ceramic products are produced and applied based on their inherent properties, but their deeper potential functions have not been fully utilized. In recent years, with increasing health and diet concerns, ceramic cooking appliances and tableware are increasingly important in life, wherein researches show that certain trace elements are beneficial to human bodies, can improve human body functions, help to enhance immunity, improve physiological functions and the like, and therefore, how to integrate the elements beneficial to the human bodies into ceramic products enables the elements beneficial to the human bodies to be gradually released in cooking or drinking, brings benefits to the human bodies, and becomes a new research direction. Although techniques exist for adding trace elements to ceramics, most of the methods involve simply adding trace element powder or solution during the ceramic making process, and the problem with these methods is that the distribution of the elements may be uneven or the beneficial properties thereof may be destroyed during the high temperature calcination process, which may not only lead to unstable performance of the ceramic, but also affect the efficacy of the released elements. Therefore, the invention provides a preparation process of mixed multi-trace element functional ceramic, trace elements can be uniformly distributed in the ceramic through the unique process, and the beneficial characteristics of the ceramic can be maintained in the high-temperature calcination process, so that the prepared ceramic can gradually release the elements beneficial to human bodies in the soup boiling or cooking process, and the function of the human bodies can be improved. Disclosure of Invention Based on the above purpose, the invention provides a preparation process of the mixed multi-trace element functional ceramic. A preparation process of mixed multi-trace element functional ceramic comprises the following steps: s1, extracting mineral substances containing multiple elements from carefully selected raw ores; s2, mixing a plurality of elements extracted from raw ores and converting the elements into a multi-liquid state mixed solution; s3, heating the untreated ceramic clay blank to 800 ℃ at high temperature; s4, placing the heated adobe in a room to naturally cool to 30 ℃; S5, after the temperature is reduced, injecting the multi-liquid state mixed solution prepared in the second step for multiple times by adopting an atomization method, airing after each injection, and carrying out injection for 3-5 times in total until the mixed solution is completely absorbed into the adobe; s6, performing ultrasonic treatment on the atomized and injected adobe to promote deep penetration of trace elements; S7, irradiating the adobe by using infrared light, and improving the binding force between the trace elements and the adobe; and S8, performing secondary calcination on the treated adobe to form a multi-trace element functional ceramic finished product. Further, the step of extracting minerals containing a plurality of elements in the step S1 includes: s11, selecting raw ore with the grain diameter of 1mm for further treatment by using a screening technology; S12, soaking the screened raw ore in a dilute sulfuric acid solution with the pH value of 2 for 12 hours so as to dissociate trace elements in the ore; S13, separating a solution containing trace elements by a centrifugal technology at a speed of 2000 revolutions per minute for 15 minutes; S14, diluting the solution to a ratio of 1:5 by using distilled water, and then further purifying by a reverse osmosis technology to obtain a mineral solution containing multiple elements. Further, in the step S2, the specific steps of mixing and converting the multiple elements into the multiple liquid state are as follows: s21, taking out the mineral solution of the multiple elements obtained in the step S1, measuring the concentration of the mineral solution, and ensuring the concentration of the elements to be 10g/L; S22, mixing different element solutions according to the required element proportion and the volume ratio of 1:1, and keeping mixing for 20 minutes to form a mixed solution A; S23, adding 5-10% of a high polymer stabilizer which is carboxymethyl cellulose or pectin into the mixed solution A to enhance the stability of the liquid; s24, stirring