CN117383911A - Ceramic magnetic disk prepared from ceramic chopper waste and production granulating waste powder and preparation method thereof - Google Patents
Ceramic magnetic disk prepared from ceramic chopper waste and production granulating waste powder and preparation method thereof Download PDFInfo
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- 239000000919 ceramic Substances 0.000 title claims abstract description 172
- 239000002699 waste material Substances 0.000 title claims abstract description 114
- 239000000843 powder Substances 0.000 title claims abstract description 93
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 20
- 238000002360 preparation method Methods 0.000 title claims abstract description 13
- 238000005469 granulation Methods 0.000 claims abstract description 20
- 230000003179 granulation Effects 0.000 claims abstract description 20
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims abstract description 15
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 15
- 238000000034 method Methods 0.000 claims abstract description 15
- 229920002401 polyacrylamide Polymers 0.000 claims abstract description 13
- 238000005452 bending Methods 0.000 claims abstract description 10
- 239000002994 raw material Substances 0.000 claims abstract description 10
- 239000000573 polycarboxylate cement Substances 0.000 claims abstract description 4
- 238000000498 ball milling Methods 0.000 claims description 23
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 claims description 17
- 239000004615 ingredient Substances 0.000 claims description 14
- 238000005245 sintering Methods 0.000 claims description 14
- 238000003825 pressing Methods 0.000 claims description 12
- 239000000203 mixture Substances 0.000 claims description 10
- 239000002245 particle Substances 0.000 claims description 10
- 238000001694 spray drying Methods 0.000 claims description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 9
- 229920002126 Acrylic acid copolymer Polymers 0.000 claims description 6
- 229920002134 Carboxymethyl cellulose Polymers 0.000 claims description 6
- 239000002202 Polyethylene glycol Substances 0.000 claims description 6
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 6
- 229920006222 acrylic ester polymer Polymers 0.000 claims description 6
- 239000001768 carboxy methyl cellulose Substances 0.000 claims description 6
- 235000010948 carboxy methyl cellulose Nutrition 0.000 claims description 6
- 239000008112 carboxymethyl-cellulose Substances 0.000 claims description 6
- 239000008367 deionised water Substances 0.000 claims description 6
- 229910021641 deionized water Inorganic materials 0.000 claims description 6
- 229920003229 poly(methyl methacrylate) Polymers 0.000 claims description 6
- 229920005646 polycarboxylate Polymers 0.000 claims description 6
- 229920001223 polyethylene glycol Polymers 0.000 claims description 6
- 239000004926 polymethyl methacrylate Substances 0.000 claims description 6
- 239000011701 zinc Substances 0.000 claims description 6
- 229910052725 zinc Inorganic materials 0.000 claims description 6
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 5
- 239000011363 dried mixture Substances 0.000 claims description 5
- 238000001035 drying Methods 0.000 claims description 5
- 238000001914 filtration Methods 0.000 claims description 5
- 238000000227 grinding Methods 0.000 claims description 5
- 238000005303 weighing Methods 0.000 claims description 5
- 238000010438 heat treatment Methods 0.000 claims description 3
- 238000002156 mixing Methods 0.000 claims description 3
- 238000004064 recycling Methods 0.000 abstract description 5
- 230000006378 damage Effects 0.000 abstract description 4
- 239000000463 material Substances 0.000 abstract description 2
- 229910052573 porcelain Inorganic materials 0.000 abstract description 2
- 239000013078 crystal Substances 0.000 description 8
- 239000000047 product Substances 0.000 description 8
- 235000014820 Galium aparine Nutrition 0.000 description 5
- 240000005702 Galium aparine Species 0.000 description 5
- 235000011187 glycerol Nutrition 0.000 description 5
- 230000000052 comparative effect Effects 0.000 description 4
- 238000005259 measurement Methods 0.000 description 4
- 238000004321 preservation Methods 0.000 description 4
- 238000013329 compounding Methods 0.000 description 3
- 239000002270 dispersing agent Substances 0.000 description 3
- 238000001363 water suppression through gradient tailored excitation Methods 0.000 description 3
- 229910010293 ceramic material Inorganic materials 0.000 description 2
- 239000013065 commercial product Substances 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 208000012260 Accidental injury Diseases 0.000 description 1
- YAIQCYZCSGLAAN-UHFFFAOYSA-N [Si+4].[O-2].[Al+3] Chemical compound [Si+4].[O-2].[Al+3] YAIQCYZCSGLAAN-UHFFFAOYSA-N 0.000 description 1
- 238000004814 ceramic processing Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
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- 238000005260 corrosion Methods 0.000 description 1
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- 239000012153 distilled water Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 238000007542 hardness measurement Methods 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 238000001291 vacuum drying Methods 0.000 description 1
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- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
- C04B35/10—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on aluminium oxide
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- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/62204—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products using waste materials or refuse
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- C04B2235/44—Metal salt constituents or additives chosen for the nature of the anions, e.g. hydrides or acetylacetonate
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Abstract
The invention belongs to the technical field of ceramic magnetic disks, and particularly relates to a ceramic magnetic disk prepared from ceramic chopper waste and production granulating waste powder and a preparation method thereof. The ceramic magnetic disk is prepared from the following raw materials, by weight, 100 parts of alumina powder, 1-8 parts of ceramic chopper waste powder, 30-35 parts of ceramic granulation waste powder, 3-5 parts of zinc polycarboxylate cement, 1-2 parts of polyacrylamide solution and 0.5-1 part of release agent. Compared with the prior art, the invention has the technical advantages that: 1) The invention creatively utilizes waste ceramic riving knife products and waste powder in the ceramic riving knife granulation process, and the volume density of the prepared ceramic magnetic disk is more than or equal to 4.0g/cm 3 The bending strength is more than 2000MPa, the Vickers hardness is more than or equal to 18GPa, and good product performance is obtained. 2) The invention improves the resource recycling rate of the ceramic riving knife material, the waste porcelain utilization rate can reach 30-40%, and the invention aims at solving the pollution and damage of the waste ceramics to the environmentThe problem provides a path.
Description
Technical Field
The invention belongs to the technical field of ceramic magnetic disks, and particularly relates to a ceramic magnetic disk prepared from ceramic chopper waste and production granulating waste powder and a preparation method thereof.
Background
The ceramic chopper is a cutter widely applied to ceramic processing, and the sharp cutting edge of the ceramic chopper can easily cut and polish various ceramic products. However, since the cutting edge of ceramic cleavers is very sharp, a safe and reliable way of storage is needed to avoid accidental injury and damage. The ceramic magnetic disk is specially designed for stacking ceramic cleavers, and a safe, stable and durable storage environment is provided for the ceramic cleavers.
The ceramic chopper waste refers to waste generated after sintering ceramic chopper products, and is mainly caused by sintering waste and damage in production procedures such as polishing, testing and the like. The waste powder for producing the granulation is formed by ceramic powder in the granulation production process. The ceramic material mainly contains silicon-aluminum oxide which is high-temperature resistant and corrosion resistant, and cannot be recycled by a chemical method, so that discarded waste ceramic cleavers are buried and accumulated and are not easy to be weathered and degraded, and the environment is greatly damaged, so that the existing ceramic waste is low in treatment and utilization degree. Along with the gradual increase of the quantity of ceramic wastes, the ceramic materials are deficient for a long time, and the serious waste of enterprise resources is caused.
In order to improve the resource utilization rate of enterprises, the ceramic chopper waste and the production granulation waste powder generated in the enterprises are specially reprocessed and recycled, and a ceramic magnetic disk made of the ceramic chopper waste and the production granulation waste powder and a processing method thereof are researched.
Disclosure of Invention
Aiming at the problems existing in the background technology, the invention aims to provide a ceramic magnetic disk which is made of ceramic riving knife waste and production granulation waste powder.
The invention also aims to provide a preparation method of the ceramic magnetic disk made of the ceramic chopper waste and the production granulating waste powder.
The technical scheme adopted for realizing the purpose of the invention is as follows: the ceramic magnetic disk is prepared from, by weight, 100 parts of alumina powder, 1-8 parts of ceramic chopper waste powder, 30-35 parts of ceramic granulation waste powder, 3-5 parts of zinc polycarboxylate cement, 1-2 parts of polyacrylamide solution and 0.5-1 part of a release agent.
Preferably, the mass percentage of the polyacrylamide solution is 0.6-3%.
Preferably, the release agent disclosed by the invention is prepared from the following raw materials in parts by weight:
3-5 parts of polyethylene glycol, 3-5 parts of glycerol, 1-3 parts of polymethyl methacrylate, 10-20 parts of carboxymethyl cellulose, 3-5 parts of acrylic ester/acrylic acid copolymer and 100 parts of deionized water.
Preferably, the purity of the alumina powder is more than or equal to 99.9%, the grain size is 200-800 nm, and the grain size of the ceramic chopper waste is less than or equal to 20 mu m.
Preferably, the volume density of the ceramic magnetic disk is more than or equal to 4.0g/cm 3 The bending strength is more than 2000MPa, and the Vickers hardness is more than or equal to 18GPa.
The technical scheme adopted for realizing the other purpose of the invention is as follows: the preparation method of the ceramic magnetic disk from the ceramic chopper waste material comprises the following preparation steps:
1) Recovering and powdering
Pouring the waste ceramic chopper product into a ceramic pulverizer to pulverize until the particle size is less than or equal to 20 mu m, so as to prepare ceramic chopper waste powder; directly filtering fine powder with the particle size less than or equal to 20 mu m generated in the ceramic powder granulating process to obtain ceramic granulating waste powder, wherein the ceramic riving knife waste powder and the ceramic granulating waste powder are used as green body aggregate;
2) Preparation of ceramic disk ingredients
Weighing the ceramic chopper waste powder, the ceramic granulation waste powder and the alumina powder which are prepared in the step 1) according to a proportion, and directly using the mixture as a raw material after uniformly mixing the ceramic chopper waste powder, the ceramic granulation waste powder and the alumina powder to prepare ceramic disk ingredients;
3) Ball milling and drying
Adding the ceramic disk ingredients prepared in the step 2) into a tank body of a ball mill, simultaneously adding a polyacrylamide solution and a zinc polycarboxylate water heater, and then adding absolute ethyl alcohol for ball milling; vacuum drying the mixture after ball milling;
4) Manufacture of ceramic disk blanks
Placing the dried mixture obtained in the step 3) and a release agent into a die, pressing into a blank, then sintering in a furnace, and finally taking out and releasing the die, thereby manufacturing the ceramic magnetic disk made of the ceramic chopper waste.
Preferably, the ball milling in the step 3) is carried out for 6-12 hours, and the ball milling rotating speed is kept at 800-1200 r/min;
preferably, in the spray drying in the step 3), the inlet temperature is 200-350 ℃, the outlet temperature is 120-180 ℃, the rotating speed of the atomizing disk is 30-40 Hz, and the feeding flow rate is 70-150 g/min.
Preferably, the pressing in step 4) is performed at a pressing pressure of 3 to 5MPa and a dwell time of 3 to 6s.
Preferably, in step 4), the sintering is performed in a furnace under the following conditions: the sintering speed is 10 ℃/min and the temperature is increased to 1200 ℃, crystal grains continuously grow, the temperature increasing speed is adjusted to 5 ℃/min and the temperature is increased to 1700 ℃, and the heat preservation time is 3-5 hours, so that the crystal grain compactness of the ceramic magnetic disk is more uniform.
Compared with the prior art, the invention has the technical advantages that:
1) The invention creatively utilizes waste ceramic riving knife products and waste powder in the ceramic riving knife granulation process, and the volume density of the prepared ceramic magnetic disk is more than or equal to 4.0g/cm 3 The bending strength is more than 2000MPa, the Vickers hardness is more than or equal to 18GPa, and good product performance is obtained.
2) The invention improves the resource recycling rate of the ceramic riving knife material, the waste porcelain utilization rate can reach 30-40%, and a path is provided for solving the problem of pollution and damage of waste ceramics to the environment.
Drawings
FIG. 1 is a schematic illustration of a ceramic disk made of ceramic cleaver waste in accordance with the present invention.
Detailed Description
The invention is further described below with reference to examples.
The invention relates to a ceramic magnetic disk made of ceramic chopper waste and production granulation waste powder, which is prepared from the following raw materials, by weight, 100 parts of alumina powder, 1-8 parts of ceramic chopper waste powder, 30-35 parts of ceramic granulation waste powder, 3-5 parts of zinc polycarboxylate cement, 1-2 parts of polyacrylamide solution and 0.5-1 part of release agent.
Wherein, the alumina powder is a commercial product, the purity is more than or equal to 99.9 percent, and the grain diameter is 200-800 nm; the zinc polycarboxylate water-heater is purchased from south Xinghua chemical; the polyacrylamide solution is prepared by mixing polyacrylamide powder purchased from Jiangsu Huatai with distilled water according to a proportion; the main component of the ceramic riving knife waste powder and the ceramic granulating waste powder is alumina. The release agent is a commercial product, and the compound components comprise 3-5 parts of polyethylene glycol, 3-5 parts of glycerol, 1-3 parts of polymethyl methacrylate, 10-20 parts of carboxymethyl cellulose, 3-5 parts of acrylic ester/acrylic acid copolymer and 100 parts of deionized water.
Example 1
1) Ceramic chopper waste recycling and powdering
Pouring the waste ceramic chopper product into a ceramic pulverizer to pulverize until the particle size is less than or equal to 20 mu m, so as to prepare ceramic chopper waste powder; directly filtering fine powder with the particle size less than or equal to 20 mu m generated in the ceramic powder granulating process to obtain ceramic granulating waste powder, wherein the ceramic riving knife waste powder and the ceramic granulating waste powder are used as green body aggregate;
2) Preparation of ceramic disk formulations
Weighing 1 part of the ceramic riving knife waste powder prepared in the step 1), 30 parts of the ceramic granulation waste powder and 100 parts of alumina powder as raw materials for use to prepare ceramic disk ingredients;
3) Ball milling and drying
Adding 100 parts of the ceramic disk ingredients prepared in the step 2) into a tank body of a ball mill, simultaneously adding 1 part of a dispersing agent polyacrylamide solution (the mass percentage content is 3%) and 4 parts of a zinc polycarboxylate water gate, adding 200 parts of absolute ethyl alcohol, and performing ball milling for 6 hours, wherein the ball milling rotating speed is kept at 1200r/min; spray drying the mixture after ball milling, wherein the spray drying condition is that the inlet temperature is 350 ℃, the outlet temperature is 180 ℃, the rotating speed of an atomizing disc is 40Hz, and the feeding flow rate is 150g/min;
4) Manufacture of ceramic disk blanks
Placing the dried mixture obtained in the step 3) and a release agent into a die, pressing into a blank, wherein the pressing pressure is 5MPa, and the dwell time is 5s, and the release agent is obtained by compounding: the weight portions of the components are 3 portions of polyethylene glycol, 5 portions of glycerin, 1 portion of polymethyl methacrylate, 10 portions of carboxymethyl cellulose, 3 portions of acrylic ester/acrylic acid copolymer and 100 portions of deionized water;
and then sintering the blank in a furnace, wherein the sintering speed is 10 ℃/min, the temperature is increased to 1200 ℃, the crystal grains continuously grow, the heating speed is adjusted to 5 ℃/min, the temperature is increased to 1700 ℃, the heat preservation time is 3 hours, the crystal grains of the ceramic magnetic disk are more uniform, and finally, the blank is taken out and demoulded, so that the ceramic magnetic disk made of the ceramic chopper waste is manufactured.
Ceramic dimensional hardness testing was performed according to GB/T16534-2009 and flexural strength testing was performed according to GB/T6569-2006.
The volume density of the ceramic magnetic disk is 4.0g/cm 3 The bending strength is 2710MPa, and the Vickers hardness is 19.5GPa.
Example 2
1) Ceramic chopper waste recycling and powdering
Pouring the waste ceramic chopper product into a ceramic pulverizer to pulverize until the particle size is less than or equal to 20 mu m, so as to prepare ceramic chopper waste powder; directly filtering fine powder with the particle size less than or equal to 20 mu m generated in the ceramic powder granulating process to obtain ceramic granulating waste powder, wherein the ceramic riving knife waste powder and the ceramic granulating waste powder are used as green body aggregate;
2) Preparation of ceramic disk ingredients
Weighing 4 parts of ceramic riving knife waste powder, 32 parts of ceramic granulation waste powder and 100 parts of alumina powder which are prepared in the step 1) as raw materials to prepare ceramic disk ingredients;
3) Ball milling and drying
Adding 100 parts of the ceramic disk ingredients prepared in the step 2) into a tank body of a ball mill, adding 2 parts of a dispersing agent polyacrylamide solution (the mass percentage content is 2%) and 5 parts of a zinc polycarboxylate water gate, adding 500 parts of absolute ethyl alcohol, and performing ball milling for 9 hours, wherein the ball milling rotating speed is kept at 1200r/min; spray drying the mixture after ball milling, wherein the spray drying condition is that the inlet temperature is 300 ℃, the outlet temperature is 160 ℃, the rotating speed of an atomizing disc is 40Hz, and the feeding flow rate is 120g/min;
4) Manufacture of ceramic disk blanks
Placing the dried mixture obtained in the step 3) and a release agent into a mold, pressing the mixture into a blank, wherein the pressing pressure is 4MPa, and the pressure maintaining time is 3s, wherein the release agent is obtained by compounding, and comprises, by weight, 5 parts of polyethylene glycol, 4 parts of glycerol, 3 parts of polymethyl methacrylate, 20 parts of carboxymethyl cellulose, 5 parts of acrylic ester/acrylic acid copolymer and 100 parts of deionized water;
and then sintering in a furnace, wherein the sintering speed is 10 ℃/min, the temperature is increased to 1200 ℃, crystal grains continuously grow, the temperature is adjusted to 5 ℃/min, the temperature is increased to 1700 ℃, the heat preservation time is 4 hours, the crystal grain compactness of the ceramic magnetic disk is more uniform, and finally, the ceramic magnetic disk manufactured by using the ceramic chopper waste is taken out and demoulded.
The volume density of the ceramic magnetic disk is 4.0g/cm 3 Flexural strength 2527MPa, vickers hardness 19.0 GPa.
Example 3
1) Ceramic chopper waste recycling and powdering
Pouring the waste ceramic chopper product into a ceramic pulverizer to pulverize until the particle size is less than or equal to 20 mu m, so as to prepare ceramic chopper waste powder; directly filtering fine powder with the particle size less than or equal to 20 mu m generated in the ceramic powder granulating process to obtain ceramic granulating waste powder, wherein the ceramic riving knife waste powder and the ceramic granulating waste powder are used as green body aggregate;
2) Preparation of ceramic disk ingredients
Weighing 8 parts of ceramic chopper waste powder, 35 parts of ceramic granulation waste powder and 100 parts of alumina powder which are prepared in the step 1) as raw materials to prepare ceramic disk ingredients;
3) Ball milling and drying
Adding 100 parts of the ceramic disk ingredients prepared in the step 2) into a tank body of a ball mill, simultaneously adding 1 part of a dispersing agent polyacrylamide solution (the mass percentage content is 0.6%) and 3 parts of a zinc polycarboxylate water gate, adding 300 parts of absolute ethyl alcohol, and performing ball milling for 12 hours at a ball milling rotating speed of 800r/min; spray drying the mixture after ball milling, wherein the spray drying condition is that the inlet temperature is 200 ℃, the outlet temperature is 120 ℃, the rotating speed of an atomizing disc is 30Hz, and the feeding flow rate is 70g/min;
4) Manufacture of ceramic disk blanks
Placing the dried mixture obtained in the step 3) and a release agent into a mold, pressing the mixture into a blank, wherein the pressing pressure is 3MPa, and the pressure maintaining time is 4s, wherein the release agent is obtained by compounding, and comprises, by weight, 4 parts of polyethylene glycol, 3 parts of glycerol, 2 parts of polymethyl methacrylate, 15 parts of carboxymethyl cellulose, 4 parts of acrylic ester/acrylic acid copolymer and 100 parts of deionized water;
and then sintering in a furnace, wherein the sintering speed is 10 ℃/min, the temperature is increased to 1200 ℃, crystal grains continuously grow, the temperature is adjusted to 5 ℃/min, the temperature is increased to 1700 ℃, the heat preservation time is 5 hours, the crystal grain compactness of the ceramic magnetic disk is more uniform, and finally, the ceramic magnetic disk manufactured by using the ceramic chopper waste is taken out and demoulded.
The volume density of the ceramic magnetic disk is 4.0g/cm 3 Bending strength 2352MPa, vickers hardness 18.5GPa.
Comparative example 1
23 parts of ceramic chopper waste was selected and the rest was the same as in example 1. Measurement of the bulk Density of the ceramic disk 4.0g/cm 3 Bending strength 920MPa, and Vickers hardness 17.5GPa.
Comparative example 2
The amount of granulated waste powder added was 20 parts, and the rest was the same as in example 1. Measurement of the bulk Density of the ceramic disk 4.1g/cm 3 Bending strength 1825MPa, and Vickers hardness 17GPa.
Comparative example 3
40 parts of granulated waste powder and 8 parts of ceramic chopper waste are selected, and the rest is the same as in example 1. Measurement of the bulk Density of the ceramic disk 4.1g/cm 3 Bending strength 1931MPa and Vickers hardness 17GPa.
Comparative example 4
The method is similar to that of example 1 except that no granulated waste powder is added, and 50 parts of ceramic chopper waste is added. Measurement of the bulk Density of the ceramic disk 4.1g/cm 3 Bending strength 1568MPa and Vickers hardness 17GPa.
Claims (10)
1. A ceramic magnetic disk made of ceramic chopper waste and production granulation waste powder is characterized in that: the ceramic magnetic disk is prepared from the following raw materials, by weight, 100 parts of alumina powder, 1-8 parts of ceramic chopper waste powder, 30-35 parts of ceramic granulation waste powder, 3-5 parts of zinc polycarboxylate cement, 1-2 parts of polyacrylamide solution and 0.5-1 part of release agent.
2. The ceramic disk of claim 1 made from ceramic riving knife waste and granulated waste powder produced therefrom, wherein: the mass percentage of the polyacrylamide solution is 0.6-3%.
3. The ceramic disk of claim 1 made from ceramic riving knife waste and granulated waste powder produced therefrom, wherein: the release agent is prepared from the following raw materials in parts by weight:
3-5 parts of polyethylene glycol, 3-5 parts of glycerol, 1-3 parts of polymethyl methacrylate, 10-20 parts of carboxymethyl cellulose, 3-5 parts of acrylic ester/acrylic acid copolymer and 100 parts of deionized water.
4. The ceramic disk of claim 1 made from ceramic riving knife waste and granulated waste powder produced therefrom, wherein: the purity of the alumina powder is more than or equal to 99.9%, the grain diameter is 200-800 nm, and the grain diameter of the ceramic chopper waste powder is less than or equal to 20 mu m.
5. The ceramic disk of claim 1 made from ceramic riving knife waste and granulated waste powder produced therefrom, wherein: the volume density of the ceramic magnetic disk is more than or equal to 4.0g/cm 3 The bending strength is more than 2000MPa, and the Vickers hardness is more than or equal to 18GPa.
6. A method for preparing a ceramic disk according to any one of claims 1 to 5 from ceramic riving knife waste and granulated waste powder from production, characterized in that: the preparation method comprises the following steps:
1) Recovering and powdering
Pouring the waste ceramic chopper product into a ceramic pulverizer to pulverize until the particle size is less than or equal to 20 mu m, so as to prepare ceramic chopper waste powder; directly filtering fine powder with the particle size less than or equal to 20 mu m generated in the ceramic powder granulating process to obtain ceramic granulating waste powder, wherein the ceramic riving knife waste powder and the ceramic granulating waste powder are used as green body aggregate;
2) Preparation of ceramic disk ingredients
Weighing the ceramic chopper waste powder, the ceramic granulation waste powder and the alumina powder which are prepared in the step 1) according to a proportion, and directly using the mixture as a raw material after uniformly mixing the ceramic chopper waste powder, the ceramic granulation waste powder and the alumina powder to prepare ceramic disk ingredients;
3) Ball milling and drying
Adding the ceramic disk ingredients prepared in the step 2) into a tank body of a ball mill, simultaneously adding a polyacrylamide solution and a zinc polycarboxylate water heater, and then adding absolute ethyl alcohol for ball milling; spray drying the mixture after ball milling;
4) Manufacture of ceramic disk blanks
Placing the dried mixture obtained in the step 3) and a release agent into a mould, pressing into a blank, then sintering in a furnace, finally taking out and releasing the mould, thereby preparing the ceramic magnetic disk made of ceramic chopper waste and production granulating waste powder.
7. The method according to claim 6, wherein: and 3) ball milling, wherein the ball milling time is 6-12 h, and the ball milling rotating speed is kept at 800-1200 r/min.
8. The method according to claim 6, wherein: the spray drying in the step 3) has the inlet temperature of 200-350 ℃, the outlet temperature of 120-180 ℃, the rotating speed of an atomizing disk of 30-40 Hz and the feeding flow rate of 70-150 g/min.
9. The method according to claim 6, wherein: the pressing and forming blank in the step 4) has the pressing pressure of 3-5 MPa and the pressure maintaining time of 3-6 s.
10. The method according to claim 6, wherein: and 4) sintering in a furnace under the following conditions: heating the sintering speed of 10 ℃/min to 1200 ℃, then adjusting the heating speed of 5 ℃/min to 1700 ℃, and keeping the temperature for 3-5 h.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202311703276.1A CN117383911A (en) | 2023-12-12 | 2023-12-12 | Ceramic magnetic disk prepared from ceramic chopper waste and production granulating waste powder and preparation method thereof |
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| CN202311703276.1A CN117383911A (en) | 2023-12-12 | 2023-12-12 | Ceramic magnetic disk prepared from ceramic chopper waste and production granulating waste powder and preparation method thereof |
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| JP2001180976A (en) * | 1999-12-22 | 2001-07-03 | Nagasaki Prefecture | Production of crystallized glass utilizing waste materials generated in the course of manufacturing pottery |
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| CN106995308A (en) * | 2017-04-21 | 2017-08-01 | 潮州三环（集团）股份有限公司 | A kind of ceramic chopper material and preparation method thereof |
| CN111958762A (en) * | 2020-09-03 | 2020-11-20 | 赣州艺佳兴陶瓷有限公司 | Method for manufacturing ceramic body by using ceramic waste |
| CN114477970A (en) * | 2022-03-17 | 2022-05-13 | 景德镇市瓷海瓷业有限公司 | Waste ceramic recycled and regenerated ceramic product and preparation method thereof |
| CN116003109A (en) * | 2022-12-05 | 2023-04-25 | 广东工业大学 | High-performance alumina ceramic riving knife and preparation method thereof |
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2023
- 2023-12-12 CN CN202311703276.1A patent/CN117383911A/en not_active Withdrawn
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001180976A (en) * | 1999-12-22 | 2001-07-03 | Nagasaki Prefecture | Production of crystallized glass utilizing waste materials generated in the course of manufacturing pottery |
| KR20030070703A (en) * | 2002-02-26 | 2003-09-02 | 신대용 | Renewed alumina ceramics |
| CN106995308A (en) * | 2017-04-21 | 2017-08-01 | 潮州三环（集团）股份有限公司 | A kind of ceramic chopper material and preparation method thereof |
| CN111958762A (en) * | 2020-09-03 | 2020-11-20 | 赣州艺佳兴陶瓷有限公司 | Method for manufacturing ceramic body by using ceramic waste |
| CN114477970A (en) * | 2022-03-17 | 2022-05-13 | 景德镇市瓷海瓷业有限公司 | Waste ceramic recycled and regenerated ceramic product and preparation method thereof |
| CN116003109A (en) * | 2022-12-05 | 2023-04-25 | 广东工业大学 | High-performance alumina ceramic riving knife and preparation method thereof |
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