Invention Grant
- Patent Title: Process of recovery of base metals from oxide ores
- Patent Title (中): 从氧化矿中回收贱金属的工艺
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Application No.: US13384207Application Date: 2010-07-14
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Publication No.: US08802042B2Publication Date: 2014-08-12
- Inventor: Antonio Clareti Pereira , Tiago Valentim Berni
- Applicant: Antonio Clareti Pereira , Tiago Valentim Berni
- Applicant Address: BR Rio de Janeiro-RJ
- Assignee: Vale S.A.
- Current Assignee: Vale S.A.
- Current Assignee Address: BR Rio de Janeiro-RJ
- Agency: Arent Fox LLP
- International Application: PCT/BR2010/000227 WO 20100714
- International Announcement: WO2011/006223 WO 20110120
- Main IPC: C01G1/00
- IPC: C01G1/00

Abstract:
A method for recovering base metal values from oxide ore is provided, where the ore includes a first group metal selected from nickel, cobalt and copper. The method includes reducing ore particle size to suit the latter unit operation, favoring contact for the metal elements, contacting the ore with ferric or ferrous chloride, hydrated or anhydrous, to produce a mix of ore and iron (II or III) chloride subjecting the mixture of the ore and ferric or ferrous chloride to enough energy to decompose the chlorides into hydrochloric acid and a iron oxides from the second group, forming their respective chlorides, selectively dissolve the produced base metal chlorides, leaving the metal as oxides and in the solid state, and recovering the dissolved base metal values from aqueous solution.
Public/Granted literature
- US20120308450A1 PROCESS OF RECOVERY OF BASE METALS FROM OXIDE ORES Public/Granted day:2012-12-06
Information query
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