Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
TREATMENT METHOD FOR LEACH LIQUOR IN WET TYPE ZINC REFINING STAGE
Document Type and Number:
Japanese Patent JP2007113076
Kind Code:
A
Abstract:

To provide a wet type treatment method for zinc leaching residue in which an arsenic removing stage is smoothly carried out even if treatment conditions in the prestage are varied.

In the wet type treatment method for zinc leaching residue obtained by leaching roasted ore in wet type zinc refining, when a first neutralized liquid obtained in a first neutralization stage is subjected to arsenic removal, a copper source substance such as copper sulfate, copper oxide and metal copper is previously added so as set the value of a Cu/As ratio in the first neutralized liquid to 1.5 to 4.0, and thereafter, zinc dust is added thereto, so as to produce RT copper residue.


Inventors:
KUDO MASATO
ARIMA HARUNOBU
Application Number:
JP2005306444A
Publication Date:
May 10, 2007
Filing Date:
October 20, 2005
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
DOWA HOLDINGS CO LTD
International Classes:
C22B19/00; C22B3/04; C22B3/46
Domestic Patent References:
JP2002030355A2002-01-31
JP2006265592A2006-10-05
Attorney, Agent or Firm:
Aniya Setsuo
Toru Yui