METHOD AND APPARATUS FOR SEPARATING AND RECOVERING IMPURITY IN MOLTEN SALT

Title:

METHOD AND APPARATUS FOR SEPARATING AND RECOVERING IMPURITY IN MOLTEN SALT

Document Type and Number:

Japanese Patent JP2005048210

Kind Code:

A

Abstract:

To provide a method for separating and recovering impurities in a molten salt, which removes the impurities from the molten salt used for burning of an organic substance to prevent the impurities from adversely affecting the molten salt, recovers valuable metals such as vanadium and nickel from the molten salt, and recycles them, and to provide an apparatus therefor.

The separating and recovering method comprises (1) cooling/pulverizing the molten salt and dissolving the product in an aqueous solution to precipitate/separate nickel sulfide; and (2) further supplying solid carbon and chlorine gas to the molten salt 16 to convert a vanadate ion to a metallic vanadium ion 17, and electrolyzing the solution to deposit the metallic vanadium ion on the surface of a cathode 20.

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Inventors:

HODOZUKA MASATOSHI
SHOJI YUICHI
SATO NOZOMI
UNOKI KAZUO
YAMAMOTO KEIICHI

Application Number:

JP2003203958A

Publication Date:

February 24, 2005

Filing Date:

July 30, 2003

Export Citation:

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Assignee:

TOSHIBA CORP

International Classes:

B01D21/26; B01J19/08; C22B3/04; C22B23/00; C22B34/22; C25C3/26; C25C7/06; (IPC1-7): C22B3/04; B01D21/26; B01J19/08; C22B23/00; C22B34/22; C25C3/26; C25C7/06

Attorney, Agent or Firm:

Yoshiaki Inomata
Osamu Kikuchi
Hiroko Inomata

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