Title:
METHOD AND APPARATUS FOR REMOVING NICKEL FROM COPPER-REMOVED ELECTROLYTE
Document Type and Number:
Japanese Patent JP2009114520
Kind Code:
A
Abstract:
To reduce the production cost in a nickel removing step by enhancing a recovery ratio when crude nickel sulfate is recovered from a copper-removed electrolyte.
In a step of recovering the crude nickel sulfate by heating and concentrating the copper-removed electrolyte in a nickel concentration tank (1), cooling the electrolyte to deposit the crude nickel sulfate in a cooling crystallization tank (3), and filtering in a vacuum filter (5), concentrated slurry obtained by settling fine nickel sulfate in a filtrate in a receiver tank (8) is repeatedly returned to the cooling crystallization tank (1) through a slurry repeating pump (9) and a slurry repeating pipe (10) as seed crystals.
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Inventors:
SHIRATORI KIMITOSHI
MATSUBARA SATOSHI
KUKIYAMA KAZUTO
MATSUBARA SATOSHI
KUKIYAMA KAZUTO
Application Number:
JP2007290572A
Publication Date:
May 28, 2009
Filing Date:
November 08, 2007
Export Citation:
Assignee:
SUMITOMO METAL MINING CO
International Classes:
C25C7/06; B01D9/02; C01G53/10; C25C1/12
Domestic Patent References:
| JPH04318129A | 1992-11-09 | |||
| JPS62284025A | 1987-12-09 | |||
| JPS6456891A | 1989-03-03 | |||
| JP2003222408A | 2003-08-08 | |||
| JP2007038074A | 2007-02-15 | |||
| JPH1199301A | 1999-04-13 | |||
| JPH04318129A | 1992-11-09 | |||
| JPS62284025A | 1987-12-09 | |||
| JPS6456891A | 1989-03-03 | |||
| JP2003222408A | 2003-08-08 | |||
| JP2007038074A | 2007-02-15 |
Other References:
JPN6012050179; 老田正道、下川公博、松山節義: '「玉野精錬所の粗硫酸ニッケル回収率改善」' 資源と素材 ｖｏｌ．１２２（２００６）Ｎｏ．４，５, 20060525, ｐ．２２３-２２６, （社）資源・素材学会
Attorney, Agent or Firm:
Kameda Tetsuaki