SiO2-Al2O3 hollow ceramic ball and preparation method thereof

A technology of sio2-al2o3 and ceramic balls, which is applied in the field of SiO2-Al2O3 hollow ceramic balls and their preparation, can solve the problems of uneven particle size distribution, high energy consumption, and high ratio of solid balls, and achieve low energy consumption and high sintering temperature Moderate, simple and easy-to-operate effect

Inactive Publication Date: 2012-12-19
SOUTHWEST PETROLEUM UNIV
View PDF3 Cites 11 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method has high energy consumption, uneven particle size distribution, and a high ratio of solid balls

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
  • SiO2-Al2O3 hollow ceramic ball and preparation method thereof
  • SiO2-Al2O3 hollow ceramic ball and preparation method thereof
  • SiO2-Al2O3 hollow ceramic ball and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] In 25 parts of water glass, add 3 parts of α-Al in sequence 2 o 3 , 1 part of urea, stirred at high speed for 30 minutes until the raw materials are evenly distributed, granulated by spray drying, the pre-calcination temperature is 300-400 ° C, and the holding time is 1 hour, then pickling to remove sodium, pickling solution H + The concentration is 1 mole / liter, the pickling time is 1 hour, and finally sintered at a high temperature of 1300 ° C, and kept for 2 hours to obtain hollow ceramic balls.

Embodiment 2

[0027] In 25 parts of water glass, add 4 parts of pyrophyllite and 1 part of urea in turn, stir at high speed for 30 minutes until the raw materials are evenly distributed, and granulate by spray drying. Wash out sodium, pickling solution H + The concentration is 1 mol / liter, the pickling time is 2 hours, and finally sintered at a high temperature of 1350°C and kept for 2 hours to obtain hollow ceramic balls.

Embodiment 3

[0029] In 25 parts of water glass, sequentially add 4 parts of α-Al 2 o 3 , 1 part of urea, stirred at high speed for 30 minutes until the raw materials are evenly distributed, granulated by spray drying, the pre-calcination temperature is 500-700 ° C, and the holding time is 1 hour, then pickling to remove sodium, pickling solution H + The concentration is 1 mol / liter, the pickling time is 3 hours, and finally sintered at a high temperature of 1400°C and kept for 2 hours to obtain hollow ceramic balls.

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
densityaaaaaaaaaa
thicknessaaaaaaaaaa
particle diameteraaaaaaaaaa
Login to view more

Abstract

The invention relates to a SiO2-Al2O3 hollow ceramic ball and a preparation method thereof. The hollow ceramic ball is mainly composed of three elements of silicon, aluminum and oxygen and contains a small amount of the element of sodium, and the elements form silicon oxide, aluminum oxide and mullite; and the outer diameter of the ball is 0.04-0.8mm, the true density is 0.7-1.7g / cm<3>, the wall thickness is 5-70 mu m, and the static-pressure strength is 60-120 MPa. The preparation method comprises the following steps: sequentially adding 1-10 parts by weight of alpha-Al2O3 or pyrophyllite and 1-5 parts by weight of urea into 20-35 parts by weight of sodium silicate, stirring at a high speed until the raw materials are uniformly distributed, granulating, prefiring, performing acid washing to remove sodium, and sintering at high temperature to obtain the hollow ceramic ball. The hollow ceramic ball is lower in density, hollowed-out, better in sphericity, bigger in wall thickness, higher in fire resistance and higher in strength, thus being a novel light-weight refractory material and a low-density proppant. Besides, the preparation method is simple to operate, and the raw materials are wide in source.

Description

technical field [0001] The invention relates to a SiO used in the field of lightweight refractory materials and the field of coal bed gas 2 -Al 2 o 3 The invention relates to a hollow ceramic ball and a preparation method thereof. Background technique [0002] The United States started the research and development of hollow ceramic balls as early as the 1980s, and has been able to industrialize production. The experimental development work was first started by two engineers and technicians, Alan T.Chapman and Joe K.Ochran, from the Department of Materials Science and Engineering of Georgia Institute of Technology in Atlanta. They used binary coaxial nozzles. The nozzles have inner tubes and outer tubes. It is a trachea, which is mainly used to release gas. There is a slurry of ceramic powder in a highly suspended state between the outer wall of the inner tube and the inner wall of the outer tube. The particle size of the ceramic powder is between 0.5 and 3 microns. This p...

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
Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/14C04B35/622
Inventor 薛屺邓洪斌
Owner SOUTHWEST PETROLEUM UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap