Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Method for producing high-purity aluminum nitride powder by using superfine metal aluminum powder

A technology of metal aluminum powder and aluminum nitride powder, which is applied in the field of non-metal powder material production, and can solve problems such as difficulty in application and purity less than 80%

Active Publication Date: 2014-01-29
TAIZHOU RUNJIE LOGISTICS SAFETY EQUIP TECH CO LTD
View PDF5 Cites 9 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] There are currently two processes for producing aluminum nitride. One is to use aluminum oxide or aluminum to react with nitric acid to produce aluminum nitrate, and then undergo deoxidation reaction to produce aluminum nitride. The aluminum nitride produced by this method is blocky and the purity is less than The other is to use aluminum wire as a cathode in a plasma generator with high-purity nitrogen gas, so that the ionized aluminum ions react with nitrogen to form aluminum nitride and deposit it. The purity of aluminum nitride produced by this method is Higher, up to 99.99%, but the product is a thin film deposited on the surface of other materials, which is difficult to apply in many aspects

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
  • Method for producing high-purity aluminum nitride powder by using superfine metal aluminum powder

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0008] 1. Open the inlet valve (13) of the receiving tank, close the discharge valve (15) of the receiving tank, and open the valve of the high-purity nitrogen tank (1).

[0009] 2. Start the fan (2) and the heat exchanger (11) to make nitrogen with a purity greater than 99.9999% circulate in the device.

[0010] 3. Add molten aluminum with an aluminum content of 99.98% or more into the U-shaped furnace body (8) of the molten aluminum heater of the medium frequency furnace through the charging pipe (10) of the molten aluminum heater 9) The level of molten aluminum reaches the required height.

[0011] 4. Start the heating coil (7) of the molten aluminum heater of the intermediate frequency furnace to heat the molten aluminum to above 1400°C.

[0012] 5. Open the pulse valve (6) of the aluminum powder feeding tank, and add aluminum powder with an aluminum content of 99.99% or more and a particle size of less than 10μm into the medium frequency furnace aluminum liquid heater feed pipe (...

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

No PUM Login to View More

Abstract

The invention discloses a method for producing high-purity aluminum nitride powder by using superfine metal aluminum powder. High-temperature molten aluminum with aluminum content of over 99.99% is adopted as a heat source, the high-purity superfine metal aluminum powder and a nitrogen gas mixture with purity of over 99.9999% are heated to over 1400 DEG C, the aluminum powder and the nitrogen gas react to generate high-purity aluminum nitride powder; moreover, aluminum vapor generated by the high-temperature molten aluminum also reacts with the nitrogen gas to generate high-purity aluminum nitride powder; the generated aluminum nitride powder is carried by flowing nitrogen gas to be cooled and collected.

Description

Technical field [0001] The invention is a method for using high-purity micro-fine metal aluminum powder as raw material, mixing with high-purity nitrogen and heating to a certain temperature, so that the aluminum powder is burned in nitrogen to generate high-purity aluminum nitride, and belongs to the production of non-metal powder materials Technical field. Background technique [0002] There are two processes for the production of aluminum nitride. One is to use aluminum oxide or aluminum to react with nitric acid to generate aluminum nitrate, which is then deoxidized to generate aluminum nitride. The aluminum nitride produced by this method is bulky and less pure 80%; the other is to use aluminum wire as a cathode in a plasma generator filled with high-purity nitrogen to make aluminum ions formed by ionization react with nitrogen to form aluminum nitride and deposit it. The purity of aluminum nitride produced by this method is Higher, up to 99.99%, but the product is a thin f...

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): C01B21/072
Inventor 袁志刚袁坤羊斌
Owner TAIZHOU RUNJIE LOGISTICS SAFETY EQUIP TECH CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com