Title:
【発明の名称】硫化物物質からの金属の回収
Document Type and Number:
Japanese Patent JPH08512092
Kind Code:
A
Abstract:
A process for recovering zinc and iron from zinc- and iron-containing sulphidic material, which also contains lead and silver, in which the sulphidic material is leached under oxidizing conditions in a two stage countercurrent pressure leach to produce a zinc-containing solution from which zinc can be recovered by conventional means such as electrowinning, followed by a reducing leach to produce a lead- and silver-bearing product containing substantially all of the lead and a substantial portion of the silver present in the zinc-containing sulphidic materials, and a high strength iron bearing solution having the iron in the ferrous state from which substantially pure, saleable or environmentally acceptable iron residue in the form of hematite which contains the majority of the soluble iron present in the zinc-containing sulphidic materials is produced.
Inventors:
Charclay, michael, edward
Masters, ian, martin
Doyle, Barry, Neville
Masters, ian, martin
Doyle, Barry, Neville
Application Number:
JP52370794A
Publication Date:
December 17, 1996
Filing Date:
May 03, 1994
Export Citation:
Assignee:
Sherit Incorporated
International Classes:
C22B3/04; C22B3/08; C22B13/00; C22B19/00; C22B19/20; (IPC1-7): C22B3/04; C22B19/20
Attorney, Agent or Firm:
Nobuo Tabuchi (1 outside)