US Patent 7517383 Method for recovery of zinc by countercurrent leaching
Patent 7517383 was granted and assigned to Outotec on April, 2009 by the United States Patent and Trademark Office.
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Patent abstract
The invention relates to method for leaching zinc-containing materials in connection with the electrolytic recovery of zinc. According to this method, the feed materials i.e. zinc calcine and zinc sulphide, are leached in three stages, in which he sulphuric acid content of the stages rises in accordance with the direction in which the solids are moving. The solids and solution formed in the leaching stages are routed throughout the process countercurrently in relation to each other.
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US Patent 07517383 Method for recovery of zinc by countercurrent leaching US Patent 7517383 Method for recovery of zinc by countercurrent leaching
Infobox
Patent Number
0751738300
Patent Number
751738300
Edits on 7 Apr, 2023
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Infobox
Is a
Current Assignee
Patent Jurisdiction
Patent Number
075173830
Date of Patent
April 14, 2009
0Patent Application Number
105442720
Date Filed
February 24, 2004
0Official Website
Patent Primary Examiner
Edits on 24 Sep, 2022
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Infobox
Is a
Current Assignee
Patent Jurisdiction
Patent Number
075173830
Date of Patent
April 14, 2009
0Patent Application Number
105442720
Date Filed
February 24, 2004
0Official Website
Patent Primary Examiner
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US Patent 07517383 Method for recovery of zinc by countercurrent leaching
Infobox
Is a
Current assignee
Patent jurisdiction
Patent number
07517383
Date of patent
April 14, 2009
Patent application number
10544272
Date Filed
February 24, 2004
Patent primary examiner
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