Title:
SULFURIC ACID SOLUTION PRODUCTION METHOD, AND ELECTROLYSIS VESSEL WHICH CAN BE USED IN SAID PRODUCTION METHOD
Document Type and Number:
WIPO Patent Application WO/2019/220858
Kind Code:
A1
Abstract:
Provided are: a sulfuric acid solution production method, whereby it becomes possible to melt a metal at a high anode current density and with high efficiency while preventing the occurrence of passivation; and an electrolysis vessel which can be used in the production method. The sulfuric acid solution production method comprises: an initial electrolytic solution feeding step of feeding, as an initial electrolytic solution, a sulfuric acid solution containing chloride ions to an electrolysis vessel (10) of which the inside is partitioned into an anode chamber (21) and a cathode chamber (22) by a partitioning membrane; and an electrolytic solution taking out step of feeding a current to an anode (13) and a cathode (14) both arranged in the electrolysis vessel (10) and taking out a metal-melted electrolytic solution, in which a metal constituting the anode (13) is melted, from the anode chamber (21). According to this configuration, it becomes possible to prevent the migration of the metal melted on the anode (13) side to the cathode (14) side, and it also becomes possible to prevent the formation of a passive product on the anode (13) side. Therefore, a high-quality sulfuric acid solution having the metal dissolved therein can be produced with high efficiency.
Inventors:
WATANABE HIROTO (JP)
MATSUOKA ITSUMI (JP)
SENBA YUSUKE (JP)
KOBAYASHI HIROSHI (JP)
MATSUOKA ITSUMI (JP)
SENBA YUSUKE (JP)
KOBAYASHI HIROSHI (JP)
Application Number:
PCT/JP2019/016742
Publication Date:
November 21, 2019
Filing Date:
April 19, 2019
Export Citation:
Assignee:
SUMITOMO METAL MINING CO (JP)
International Classes:
C25B1/00; C01G51/10; C01G53/10; C25B9/00; C25B13/02; H01M4/525
Foreign References:
| JP2011225963A | 2011-11-10 | |||
| JPS5983785A | 1984-05-15 | |||
| JPS59229490A | 1984-12-22 | |||
| JP2014088585A | 2014-05-15 | |||
| JP2009167451A | 2009-07-30 | |||
| JPS62256975A | 1987-11-09 | |||
| JP2015140465A | 2015-08-03 | |||
| JP2009203487A | 2009-09-10 | |||
| JP2002320969A | 2002-11-05 | |||
| JP2004067483A | 2004-03-04 | |||
| JP2003096585A | 2003-04-03 |
Other References:
See also references of EP 3795717A4
Attorney, Agent or Firm:
YAMAUCHI PATENT ATTORNEYS (JP)
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