Title:
METHOD AND APPARATUS FOR PRODUCING SILICON
Document Type and Number:
WIPO Patent Application WO/2011/055650
Kind Code:
A1
Abstract:
Disclosed are a method and an apparatus for producing silicon by carbon reduction in an electric arc furnace using a carbon material and a silica material that contains iron, aluminum, calcium and titanium respectively in an amount of 0.1% by mass or less. The method and the apparatus for producing silicon are characterized in that the overcurrent flowing through an electrode of the electric arc furnace during the carbon reduction is reduced using a power regulator or the electric arc furnace is operated while setting the hearth power density (PD) of the electric arc furnace at 90 (W/cm2) or higher.
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Inventors:
YAMAHARA Keiji (())
山原 圭二 (())
FUJIMOTO Hiromi (())
山原 圭二 (())
FUJIMOTO Hiromi (())
Application Number:
JP2010/068877
Publication Date:
May 12, 2011
Filing Date:
October 25, 2010
Export Citation:
Assignee:
MITSUBISHI CHEMICAL CORPORATION (14-1, Shiba 4-chome Minato-k, Tokyo 14, 〒1080014, JP)
三菱化学株式会社 (〒14 東京都港区芝四丁目１４番１号 Tokyo, 〒1080014, JP)
YAMAHARA Keiji (())
山原 圭二 (())
三菱化学株式会社 (〒14 東京都港区芝四丁目１４番１号 Tokyo, 〒1080014, JP)
YAMAHARA Keiji (())
山原 圭二 (())
International Classes:
C01B33/025; F27B3/08; F27B3/28; F27D11/08; H05B7/148
Attorney, Agent or Firm:
HAMADA Yuriko et al. (Eikoh Patent Firm, Toranomon East Bldg. 10F 7-13, Nishi-Shimbashi 1-chome, Minato-k, Tokyo 03, 〒1050003, JP)
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