Title:
ZINC PRODUCTION METHOD USING ELECTRIC FURNACE DUST AS RAW MATERIAL
Document Type and Number:
WIPO Patent Application WO/2015/030235
Kind Code:
A1
Abstract:
A zinc production method including: a chlorination step (101) in which oxygen gas (2) and a crude zinc chloride vapor (3) are obtained by contacting an electric furnace dust (1), which contains zinc oxide, or a secondary dust (1), which is generated when an electric furnace dust is reduced in a reduction furnace, with a mixed gas that contains chlorine gas (8) and an oxygen-containing gas (10), and converting a zinc oxide component of the electric furnace dust (1) or the secondary dust (1) to zinc chloride and vaporizing the same; purification steps (102, 104, 105) in which a purified zinc chloride melt (6) is obtained by separating a zinc chloride component contained in the crude zinc chloride vapor (3) from components (5, 7) other than zinc chloride that are contained in the crude zinc chloride vapor (3); and an electrolysis step (103) in which zinc melt (9) and chlorine gas (8) are obtained by electrolyzing the purified zinc chloride melt (6).
Inventors:
IOSAKI MASAAKI (JP)
MORI SHUJI (JP)
SATO YUZURU (JP)
MORI SHUJI (JP)
SATO YUZURU (JP)
Application Number:
PCT/JP2014/072931
Publication Date:
March 05, 2015
Filing Date:
September 01, 2014
Export Citation:
Assignee:
KINOTECH SOLAR ENERGY CORP (JP)
International Classes:
C22B7/02; C22B9/02; C22B19/30; C22B19/32; C25C3/34
Foreign References:
| JP2000290736A | 2000-10-17 | |||
| JP2009074132A | 2009-04-09 | |||
| JP2002105550A | 2002-04-10 |
Other References:
ABBOTT A. P. ET AL.: "Processing metal oxides using ionic liquids", TRANSACTIONS OF THE INSTITUTIONS OF MINING AND METALLURGY SECTION C, vol. 115, no. 1, 1 March 2006 (2006-03-01), pages 15 - 18, XP008117609, DOI: 10.1179/174328506X91293
MATSUURA HIROYUKI ET AL.: "Removal of Zn and Pb from Fe203-ZnFe204-ZnO-PbO Mixture by Selective Chlorination and Evaporation Reactions", ISIJ INTERNATIONAL, vol. 46, no. 8, 1 January 2006 (2006-01-01), pages 1113 - 1119, XP055269349, DOI: 10.2355/ISIJINTERNATIONAL.46.1113
See also references of EP 3042970A4
MATSUURA HIROYUKI ET AL.: "Removal of Zn and Pb from Fe203-ZnFe204-ZnO-PbO Mixture by Selective Chlorination and Evaporation Reactions", ISIJ INTERNATIONAL, vol. 46, no. 8, 1 January 2006 (2006-01-01), pages 1113 - 1119, XP055269349, DOI: 10.2355/ISIJINTERNATIONAL.46.1113
See also references of EP 3042970A4
Attorney, Agent or Firm:
KAWAMOTO, Manabu et al. (JP)
Kawamoto Study (JP)
Kawamoto Study (JP)
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