Title:
METHOD FOR REFINING ZINC AND METHOD FOR PRODUCING HIGH PURITY SILICON
Document Type and Number:
Japanese Patent JP2013234368
Kind Code:
A
Abstract:
To obtain zinc in which the content of carbon is reduced, and further to obtain high purity silicon, in which the content of carbon is reduced, by a zinc reduction method using the zinc having a low carbon content.
In a method for refining zinc, raw material zinc having a carbon content of ≥1.5 ppma is melted and held at 720 to 870°C for 30 to 600 min in the presence of an inert gas to reduce the content of carbon in the raw material zinc. A method for producing high purity silicon depends on a zinc reduction method using the zinc obtained by the method for refining zinc.
Inventors:
ANSHITA TAKAHIRO
SATO KENJI
SATO KENJI
Application Number:
JP2012108378A
Publication Date:
November 21, 2013
Filing Date:
May 10, 2012
Export Citation:
Assignee:
JNC CORP
JX NIPPON MINING & METALS CORP
TOHO TITANIUM CO LTD
JX NIPPON MINING & METALS CORP
TOHO TITANIUM CO LTD
International Classes:
C22B19/32; C01B33/033; C22B9/00; C22C18/00
Attorney, Agent or Firm:
Patent corporation ssinpat
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