Silicon powder and method for production of silicon powder
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jul 7, 1992
Issued Date -
N/A
app pub date -
Jan 11, 1990
filing date -
Dec 8, 1988
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The invention relates to a method for continuous production of silicon powder comprising the combination of the following steps: a) continuous production of silicon in an electric smelting furnace, b) refining and alloying of the molten silicon in a metal treatment vessel, c) continuous supply of modern silicon from the metal treatment vessel to a holding furnace, d) continuous supply of molten silicon to a closed atomizing apparatus wherein the molten silicon is atomized by means of an inert gas supplied from a pressure vessel or a compressor unit, e) continuous removal of atomized silicon powder from the atomizing apparatus, f) separation of atomized silicon powder and inert gas in a solid/gas separator, g) screening of the silicon powder into preset particle size fractions, h) supply of the different particle size fractions of silicon powder to closed product silos, i) filtration of the inert gas from step f) for removing any remaining solid particles from the inert gas, cooling and compressing the inert gas from step i) and recycling of the compressed inert gas to the pressure vessel or directly to the atomizing apparatus.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully