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Patent Searching and Data


Title:
MANUFACTURING METHOD AND MANUFACTURING APPARATUS OF SILICON
Document Type and Number:
Japanese Patent JP2020090429
Kind Code:
A
Abstract:
To provide a manufacturing method of silicon, capable of manufacturing high-purity silicon suitable for solar battery silicon, highly efficiently, in a high yield and at a low cost.SOLUTION: Metal silicon is generated at a low cost by highly efficiently heating by microwave heating, silica contained in a silicicolous plant which has not been put to practical use so far as a silica source, especially, chaff or rice straw generated from rice plants widely manufactured in a large amount as staple food. In more details, chaff or rice straw obtained as a silica source capable of being acquired easily at a low cost is burnt to bring into silica ash, carbon of a required amount is mixed therewith, and the raw material is internally heated in microwaves at a high speed and selectively. With this, the metal silicon is manufactured in a short time easily with high energy efficiency.SELECTED DRAWING: Figure 1

Inventors:
NAGAHATA RITSUKO
MORI YUKIE
SAITO YUKO
TAKEUCHI KAZUHIKO
Application Number:
JP2018230422A
Publication Date:
June 11, 2020
Filing Date:
December 07, 2018
Export Citation:
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Assignee:
AIST
International Classes:
C01B33/025; F27D11/12
Attorney, Agent or Firm:
Masanori Fujimaki