Check patentability & draft patents in minutes with Patsnap Eureka AI!

Preparation method of ceramic microspheres

A technology of ceramic microspheres and ceramic shells, which is applied in the field of preparation of ceramic microspheres, can solve problems such as hindering the application of the melting atomization method and increasing production costs, and achieve the effects of low cost, good sphericity and smooth surface

Inactive Publication Date: 2017-09-22
KUNMING UNIV OF SCI & TECH
View PDF5 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Restricted by various conditions, the crucible in the melt atomization method has always been the bottleneck that hinders the further application of the melt atomization method. For example, in the preparation of lithium silicate (Li 4 SiO 4 ) The most suitable crucible for the process of ceramic microspheres is a platinum crucible, which will undoubtedly greatly increase the production cost

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Preparation method of ceramic microspheres
  • Preparation method of ceramic microspheres
  • Preparation method of ceramic microspheres

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A method for preparing ceramic microspheres by melting and atomizing in a high-frequency cold crucible, specifically comprising the following steps:

[0026] (1) Mixing: Take 50g Li 4 SiO 4 Put the powder in a beaker, then add 10ml of deionized water and 5g of polyammonium methacrylate into the beaker, use a glass rod to stir continuously until it becomes a viscous ceramic slurry, and use a viscometer to measure the viscosity of the ceramic slurry to 110mPa·s .

[0027] (2) Slurry brushing: evenly brush the ceramic slurry on the inner wall of the cavity formed by the water-cooled copper tube. The thickness of the brushing wall is about 2mm. After the brushing is completed, let it stand for 24 hours, and then bake it with an infrared lamp until no gas escapes. , The ceramic slurry is solidified into a ceramic shell, and a diversion nozzle with a diameter of 5mm is opened under the shell, and sealed with a graphite plug.

[0028] (3) Feeding: take 300g Li 4 SiO 4 The...

Embodiment 2

[0035] A method for preparing ceramic microspheres by melting and atomizing in a high-frequency cold crucible, specifically comprising the following steps:

[0036] (1) Mixing: take 50g Al 2 o 3 Put the powder in a beaker, then add 25ml of deionized water and 2.5g of gum arabic into the beaker, and stir continuously with a glass rod until it becomes a viscous ceramic slurry. The viscosity of the ceramic slurry is measured by a viscometer as 60mPa·s.

[0037] (2) Slurry brushing: evenly brush the ceramic slurry on the inner wall of the cavity formed by the water-cooled copper tube. The thickness of the brushing wall is about 0.5mm. After the ceramic slurry is solidified into a ceramic shell, a diversion nozzle with a diameter of 2 mm is opened under the shell and sealed with a graphite plug.

[0038] (3) Feeding: take 400g Al 2 o 3 The powder is poured into the cavity of the ceramic shell, and the Al 2 o 3 The powder is spread flat, the filling rate is about 80%, and the ...

Embodiment 3

[0044] A method for preparing ceramic microspheres by melting and atomizing in a high-frequency cold crucible, specifically comprising the following steps:

[0045] (1) Slurry: take 50g ZrO 2 Put the powder in a beaker, then add 15ml of deionized water and 4g of polyethylene glycol into the beaker, and use a glass rod to continuously stir until it becomes a viscous ceramic slurry. The viscosity of the ceramic slurry is measured by a viscometer to be 90mPa·s.

[0046] (2) Slurry brushing: evenly brush the ceramic slurry on the inner wall of the cavity formed by the water-cooled copper tube. The thickness of the brushing wall is about 2mm. After the brushing is completed, let it stand for 24 hours, and then bake it with an infrared lamp until no gas escapes. , The ceramic slurry is solidified into a ceramic shell, and a diversion nozzle with a diameter of 5mm is opened under the shell, and sealed with a graphite plug.

[0047] (3) Feeding: Take 500g ZrO 2 The powder is poured ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
Viscosityaaaaaaaaaa
Particle sizeaaaaaaaaaa
Viscosityaaaaaaaaaa
Login to View More

Abstract

The invention discloses a preparation method of ceramic microspheres and belongs to the technical field of ceramic microsphere preparation. The method includes the following steps that ceramic powder, deionized water and a binder are mixed and formed into pulp, the inner wall of a cavity is uniformly coated with the pulp to form a ceramic shell layer, ceramic powder is placed in an empty cavity of the ceramic shell layer, a graphite or metal iridium ignition ring is placed above the ceramic shell layer, cooling water is introduced firstly, a high-frequency electromagnetic induction heating furnace is then started, heating is conducted until the ceramic powder in the cavity is completely molten and overheated, heat preservation is then conducted, molten ceramic liquid flows through the mouth of an atomizer and is subjected to airflow crushing and condensation to form spherical ceramic microspheres, and the prepared ceramic microspheres are subjected to screen classification and annealing to obtain the final ceramic microspheres. The preparation method of the ceramic microspheres is simple in process and low in cost, the use of a crucible for traditional ceramic microsphere preparation through melting atomization is avoided, the prepared ceramic microspheres are high in purity, good in degree of sphericity and smooth in surface, and the method can be used for preparing the high-melting-point ceramic microspheres.

Description

technical field [0001] The invention belongs to the technical field of preparation of ceramic microspheres, and in particular relates to a preparation method of ceramic microspheres. Background technique [0002] Ceramic microspheres refer to inorganic non-metallic materials with diameters ranging from submicron to millimeters and a sphericity of 98%. Ceramic microspheres are used in high-tech fields such as piezoelectric materials, drug carriers, catalysis, and tritium proliferation because of their good fluidity, filling properties, and special properties in terms of physical and chemical properties. [0003] At present, the common preparation methods of ceramic microspheres mainly include sol-gel method, extrusion-spheronization-sintering method, instillation-condensation-sintering method, polymerization molding sintering method, melt atomization method, etc. CN 104003715 A adopts sol-gel method to prepare ceramic microspheres, first ZrO(NO 3 ) 2 , Y(NO 3 ) 2 , carbo...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): C04B35/653C04B35/622C04B35/16C04B35/10C04B35/48
CPCC04B35/10C04B35/16C04B35/48C04B35/622C04B35/653C04B2235/94C04B2235/95
Inventor 王伟强胡劲陈援王玉天宁德魁王开军隋忠明段云彪
Owner KUNMING UNIV OF SCI & TECH
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com