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CN-121974564-A - Method for preparing ceramic frit by adopting electronic waste

CN121974564ACN 121974564 ACN121974564 ACN 121974564ACN-121974564-A

Abstract

The invention discloses a method for preparing ceramic frit by adopting electronic waste, which comprises the following raw materials, by mass, 40-55 parts of waste electronic glass, 15-27 parts of polishing powder, 8-10 parts of waste alumina, 6-8 parts of waste desulfurized gypsum, 3-6 parts of boron-containing modifier, 5-8 parts of waste fuel and 1-3 parts of mineralizer, stirring and mixing the waste electronic glass, the polishing powder, the waste alumina, the waste desulfurized gypsum, the boron-containing modifier and the mineralizer, adding the waste fuel, further stirring and mixing, granulating in a granulator, calcining the prepared granules in a furnace at 1050-1150 ℃, and carrying out water quenching molding on molten materials to obtain the ceramic frit. The method for preparing the ceramic frit by adopting the electronic waste solves the technical problems of high energy consumption for calcining the ceramic frit and resource waste caused by direct disposal of the electronic waste in the prior art.

Inventors

  • YANG YOUYU
  • CAO YIRU
  • MA YING
  • CHEN TING
  • WANG JINGZHE

Assignees

  • 永清环保股份有限公司

Dates

Publication Date
20260505
Application Date
20260112

Claims (10)

  1. 1. A method for preparing ceramic frit by adopting electronic waste is characterized by comprising the following raw materials, by mass, 40-55 parts of waste electronic glass, 15-27 parts of polishing powder, 8-10 parts of waste alumina, 6-8 parts of waste desulfurized gypsum, 3-6 parts of boron-containing modifier, 5-8 parts of waste fuel and 1-3 parts of mineralizer, stirring and mixing the waste electronic glass, the polishing powder, the waste alumina, the waste desulfurized gypsum, the boron-containing modifier and the mineralizer, adding the waste fuel, further stirring and mixing, granulating in a granulator, calcining the prepared granules in a furnace at 1050-1150 ℃, and carrying out water quenching on molten materials to obtain the ceramic frit.
  2. 2. The method for preparing ceramic frit by using electronic waste according to claim 1, wherein the mass fraction of SiO 2 in the waste electronic glass is 55-60%, the mass fraction of Al 2 O 3 is 15-20%, the mass fraction of K 2 O is more than 12%, the mass fraction of Na 2 O is more than 4%, the mass fraction of CeO 2 in the polishing powder is 15-40%, and the mass fraction of La 2 O 3 is 10-20%.
  3. 3. The method for preparing ceramic frit using electronic waste according to claim 1, wherein the mass fraction of alumina in the waste alumina is not less than 85%.
  4. 4. The method for preparing ceramic frit by using electronic waste according to claim 1, wherein the mass fraction of CaSO 4 ·2H 2 O in the waste desulfurized gypsum is not less than 90%.
  5. 5. The method for preparing ceramic frit by using electronic waste according to claim 1, wherein the mass fraction of B 2 O 3 in the boron-containing modifier is not less than 42%.
  6. 6. The method for preparing ceramic frit by using electronic waste according to claim 1, wherein the waste fuel is one or two of waste mineral oil and waste organic solvent, the calorific value is 3000-5000 kcal/kg, and the mineralizer is one or two of aluminophosphate and magnesium pyrophosphate.
  7. 7. The method for preparing ceramic frit by using electronic waste according to claim 1, wherein before stirring and mixing the raw materials, the polishing powder and the desulfurized gypsum are respectively dried at 300-400 ℃ until the water content is less than 20%, and the waste electronic glass and the waste alumina are ground to a particle size of not more than 40 μm.
  8. 8. The method for preparing ceramic frit by using electronic waste according to claim 7, wherein after the waste gas generated during calcination of the melting furnace is used for drying polishing powder and waste desulfurized gypsum, acid pollutants in the waste gas are treated by a limestone-gypsum desulfurizing tower to generate calcium sulfate, the calcium sulfate returns to be used as a raw material, and dust in the waste gas is treated by a bag-type dust remover.
  9. 9. The method for preparing ceramic frit by using electronic waste according to claim 1, wherein the ceramic frit is granulated by a granulator to obtain irregular particles of 20-50 mm.
  10. 10. The method for preparing ceramic frit by using electronic waste according to claim 1, wherein the furnace pressure of the melting furnace is-50-0 pa, and the calcination time is 30-40 min.

Description

Method for preparing ceramic frit by adopting electronic waste Technical Field The invention belongs to the technical field of preparation of ceramic frit, and particularly relates to a method for preparing ceramic frit by adopting electronic waste. Background The electronic manufacturing industry generates a great amount of solid hazardous waste such as polishing powder, waste electronic glass, waste alumina, waste lubricating oil, waste glue and the like each year. The waste polishing powder contains CeO 2、La2O3 rare earth oxide, metallic lithium, aluminum and silicon oxide, and simultaneously contains impurities such as flocculating agent and the like, so that the recycling difficulty is high, and the waste polishing powder is treated cooperatively by a cement kiln at present. The main components in the waste electronic glass are SiO 2 and Al 2O3, and sodium-potassium alkali metal oxide, paint and the like are contained, wherein the sodium-potassium content is high, paint containing paint can not be remelted in a furnace to produce curtain wall glass, landfill is mainly used during disposal, and the risks of occupation of land resources, metal leakage and the like exist. The waste alumina comes mainly from the air compressor replacement waste. Hazardous wastes such as waste lubricating oil, waste glue and the like are mainly burnt and are required to pay high-safety disposal fees. The existing ceramic frit preparation technology has the defect of high energy consumption for ceramic frit calcination, the frit calcination temperature in the traditional preparation technology needs to be maintained at 1450-1500 ℃, and the energy consumption cost is high. In the prior art, the energy consumption is reduced only through the adjustment of the conventional process, so that the energy saving effect is limited, and the bottleneck of high energy consumption cannot be broken through. In the prior art, electronic waste is adopted as a raw material of ceramic frit, for example, ceramic frit with excellent thermal stability and no glaze defect disclosed in China patent application No. 2024106996289 and a production and preparation method thereof, and waste glass is only used as a single solid waste raw material, so that the technical problem of high calcining energy consumption still exists. Aiming at the problem that SiO 2 in the current electronic waste can be used as a core skeleton component of glaze, and the electronic waste contains alkali metal oxide and CeO 2、La2O3 rare earth metal oxide, the alkali metal oxide has inherent fluxing characteristic and the rare earth metal has strengthening effect on ceramic crystal phase, for example, the electronic waste is directly treated, so that the resource waste is caused. Disclosure of Invention Aiming at the technical problems existing at present, the invention aims to provide a method for preparing ceramic frit by adopting electronic waste, which can solve the technical problems of high energy consumption for ceramic frit calcination and resource waste caused by direct treatment of electronic waste in the prior art. In order to achieve the above purpose, the technical scheme adopted by the invention is as follows: A method for preparing ceramic frit by using electronic waste comprises the following raw materials, by mass, 40-55 parts of waste electronic glass, 15-27 parts of polishing powder, 8-10 parts of waste aluminum oxide, 6-8 parts of waste desulfurized gypsum, 3-6 parts of boron-containing modifier, 5-8 parts of waste fuel and 1-3 parts of mineralizer, stirring and mixing the waste electronic glass, the polishing powder, the waste aluminum oxide, the waste desulfurized gypsum, the boron-containing modifier and the mineralizer, adding the waste fuel, further stirring and mixing, granulating by a granulator, calcining the prepared granules in a furnace at 1050-1150 ℃, and quenching molten materials with water to form the ceramic frit. The raw materials are dry basis, and SiO 2 in the waste electronic glass is used as a core skeleton component of the glaze, so that good stability, hardness and chemical durability can be provided for the glaze, and the high-quality glaze is formed. K 2 O and Na 2 O in waste electronic glass are used as 'network modification bodies' in the preparation process of ceramic frit, oxygen ions (O 2-) provided by the waste electronic glass can break silicon-oxygen bonds (Si-O-Si), a rigid three-dimensional network is depolymerized into smaller units, so that high-temperature viscosity is drastically reduced, the main force for reducing the melting temperature is that the radius of sodium ions (Na +) is smaller, the field intensity is higher, the viscosity reduction effect is very remarkable in a high-temperature stage (> 1300 ℃), the radius of potassium ions (K +) is larger, the field intensity is lower, the low-temperature viscosity can be better reduced, the thermal expansion performance of the glass is improved, the 'devitrification'