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CN-122010588-A - Preparation method of microporous ceramic water purification filter element

CN122010588ACN 122010588 ACN122010588 ACN 122010588ACN-122010588-A

Abstract

The invention discloses a preparation method of a microporous ceramic water purification filter element, which belongs to the technical field of water filtering materials, and the water purification filter element is prepared from, by weight, 33-50 parts of diatomite, 22-32 parts of clay, 12-22 parts of light calcium, 8-18 parts of aluminum hydroxide, additives and water, wherein the additives comprise, but are not limited to, a surfactant, a suspending agent or a water reducer. The water purifying filter element with high filtering precision, long service life, convenient cleaning and regeneration, no secondary pollution and high filtering speed can be produced after a series of procedures of grinding, sieving, ageing, forming, drying, high-temperature sintering, polishing, soaking, flushing and re-drying are carried out on the materials with inorganic food grade such as diatomite, clay, light calcium carbonate, aluminum hydroxide, additives, water and the like as raw materials, so that the produced water purifying filter element can meet the national standard requirements of drinking water treatment equipment in all aspects, and meanwhile, the preparation method is simple to operate and high in finished product qualification rate.

Inventors

  • DU JIANYAO

Assignees

  • 宁波清水坊环保科技有限公司

Dates

Publication Date
20260512
Application Date
20230725

Claims (9)

  1. 1. A preparation method of a microporous ceramic water purification filter element is characterized in that the water purification filter element is prepared from the following raw materials in parts by weight: 33-50 parts of diatomite, 22-32 parts of clay, 12-22 parts of light calcium carbonate, 8-18 parts of aluminum hydroxide, additives and water.
  2. 2. The method for preparing a microporous ceramic water purification cartridge according to claim 1, wherein the additive comprises, but is not limited to, a surfactant, a suspending agent, or a water reducing agent.
  3. 3. The method for preparing the microporous ceramic water purification filter element according to claim 2, which is characterized by comprising the following steps: firstly, selecting and mixing raw materials, equally dividing the raw materials into a plurality of parts, and adding the parts into a ball mill one by one to grind into slurry with a certain particle-level proportion; Step two, placing the screened slurry into a slurry tank, performing intermittent stirring at normal temperature, and then aging for a certain time; Step three, performing machine molding drying or manual molding drying on the slurry subjected to screening and ageing to prepare a filter element embryo, Step four, performing appearance inspection and repair on the filter element embryo, and then loading the filter element embryo into a kiln car; setting the temperature of the kiln and a heating curve according to the firing curve of the filter element embryo so as to fire the filter element embryo; step six, polishing the fired filter element embryo to enable the filter element embryo to meet the requirements of appearance and size; and seventhly, carrying out subsequent treatment of soaking, flushing and re-drying on the polished product to finally manufacture the water purifying filter element.
  4. 4. A method for preparing a microporous ceramic water purification cartridge according to claim 3, wherein the subsequent treatment in step seven comprises the following operations: firstly, adding pure water and HCl into a soaking container with a water outlet valve at the bottom, and uniformly stirring the pure water and the HCl, wherein the adding weight of the HCl is 5-6% of the weight of the product; immersing the finished product with the mouth part upwards in a soaking container, injecting an acid solution into the soaking container, and then closing the upper opening of the soaking container by a cover; thirdly, after the product is soaked in the soaking container for 5 days and days, opening a water outlet valve, and draining all liquid in the soaking container; filling pure water into the product, and discharging pure water from the water outlet valve completely; fifthly, closing a water outlet valve, adding pure water into the soaking container, and allowing the pure water to finish immersing the product; After six hours and 12 hours of operation, opening a water outlet valve to drain all liquid in the soaking container; Operation seven, repeating operation four and operation five; After the operation eight and 5 days and days, filling pure water at 95-100 ℃ into the product, then completely discharging pure water from the water outlet valve, then filling pure water at 95-100 ℃ again, and then completely discharging pure water from the water outlet valve; And step nine, taking out the product from the soaking container, washing the surface of the product by pure water, drying the washed product, and finally packaging to manufacture the water purifying filter element.
  5. 5. The method for preparing a microporous ceramic water purification filter element according to claim 3, wherein in the first step, the slurry with a particle-level ratio is screened by 100 meshes.
  6. 6. A method for preparing a microporous ceramic water purification cartridge according to claim 3, wherein in the second step, the aging is performed for a certain period of time of 1 to 2 days.
  7. 7. A method for preparing a microporous ceramic water purification cartridge according to claim 3, wherein in the third step; Placing a forming die in a grouting machine, setting grouting time, forming time and slurry discharging time of the grouting machine, pumping slurry into the grouting machine, injecting the slurry into the forming die, completing grouting forming of the slurry, placing the slurry and the forming die in a drying room after forming the slurry, firstly drying a part of water in the slurry on the forming die, then separating the slurry dried with the part of water from the forming die, and then placing the demoulded slurry back into the drying room for drying; The manual molding and drying is as follows, the slurry is directly poured into a slurry mold manually, the slurry is poured out after the slurry in the slurry mold reaches the thickness, the slurry mold is placed on a tray, and then the slurry mold and the tray are placed in a drying room for drying.
  8. 8. The method for preparing a microporous ceramic water purification filter element according to claim 7, wherein the drying room is a chained drying room, and the water content of the drying room is less than 5%.
  9. 9. The method for preparing a microporous ceramic water purification filter element according to claim 3, wherein in the fifth step, the kiln is a tunnel kiln or a pusher kiln, the set temperature is 1200 ℃, and the heating curve is 24-34 hours after the filter element embryo is discharged.

Description

Preparation method of microporous ceramic water purification filter element Technical Field The invention relates to the technical field of water filtering materials, in particular to a preparation method of a microporous ceramic water purifying filter element. Background Along with the development of human industry, the pollution of water resources is increasingly serious, the sanitation of drinking water has become a focus of worldwide attention, and at present, more than 2200 organic pollutants are detected from water worldwide, and seriously endanger human health, so that related technicians filter the water by using filter materials to separate heavy metals or harmful components in the water, namely, a water purifying filter element with the filter materials is arranged in a water purifier, thereby realizing water filtration. At present, the filtering materials of the existing water purifying filter element mainly comprise honeycomb ceramics, filter paper, steel wire gauze and the like, wherein the honeycomb ceramics have the most effective filtering effect on heavy metals or harmful components in water, however, the raw materials of the filtering materials of the honeycomb ceramics are unreasonable to be selected and matched, the production cost is high, and meanwhile, the production and the manufacture are relatively backward, so that the requirement of continuous development of the technology cannot be met. Therefore, further improvements are needed. Disclosure of Invention The invention aims to provide a preparation method of a microporous ceramic water purification filter element, which aims to overcome the defects in the prior art. The preparation method of the microporous ceramic water purification filter element designed according to the purpose comprises the following raw materials in parts by weight: 33-50 parts of diatomite, 22-32 parts of clay, 12-22 parts of light calcium carbonate, 8-18 parts of aluminum hydroxide, additives and water. Such additives include, but are not limited to, surfactants, suspending agents, or water reducing agents. The preparation method comprises the following steps: firstly, selecting and mixing raw materials, equally dividing the raw materials into a plurality of parts, and adding the parts into a ball mill one by one to grind into slurry with a certain particle-level proportion; Step two, placing the screened slurry into a slurry tank, performing intermittent stirring at normal temperature, and then aging for a certain time; Step three, performing machine molding drying or manual molding drying on the slurry subjected to screening and ageing to prepare a filter element embryo; Step four, performing appearance inspection and repair on the filter element embryo, and then loading the filter element embryo into a kiln car; setting the temperature of the kiln and a heating curve according to the firing curve of the filter element embryo so as to fire the filter element embryo; step six, polishing the fired filter element embryo to enable the filter element embryo to meet the requirements of appearance and size; and seventhly, carrying out subsequent treatment of soaking, flushing and re-drying on the polished product to finally manufacture the water purifying filter element. The subsequent processing in the seventh step includes the following operations: firstly, adding pure water and HCl into a soaking container with a water outlet valve at the bottom, and uniformly stirring the pure water and the HCl, wherein the adding weight of the HCl is 5-6% of the weight of the product; immersing the finished product with the mouth part upwards in a soaking container, injecting an acid solution into the soaking container, and then closing the upper opening of the soaking container by a cover; thirdly, after the product is soaked in the soaking container for 5 days and days, opening a water outlet valve, and draining all liquid in the soaking container; filling pure water into the product, and discharging pure water from the water outlet valve completely; fifthly, closing a water outlet valve, adding pure water into the soaking container, and allowing the pure water to finish immersing the product; After six hours and 12 hours of operation, opening a water outlet valve to drain all liquid in the soaking container; Operation seven, repeating operation four and operation five; After the operation eight and 5 days and days, filling pure water at 95-100 ℃ into the product, then completely discharging pure water from the water outlet valve, then filling pure water at 95-100 ℃ again, and then completely discharging pure water from the water outlet valve; And step nine, taking out the product from the soaking container, washing the surface of the product by pure water, drying the washed product, and finally packaging to manufacture the water purifying filter element. In the first step, the slurry with the particle-grade proportion is screened by a 100-mesh sieve. In the second step,