GR1003306B - Method of processing minerals under pressure and high temperature for achieving selective solubility of nickel and cobalt - Google Patents

Method of processing minerals under pressure and high temperature for achieving selective solubility of nickel and cobalt

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Publication number
GR1003306B
GR1003306B GR980100484A GR980100484A GR1003306B GR 1003306 B GR1003306 B GR 1003306B GR 980100484 A GR980100484 A GR 980100484A GR 980100484 A GR980100484 A GR 980100484A GR 1003306 B GR1003306 B GR 1003306B
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GR
Greece
Prior art keywords
nickel
cobalt
sulphadisation
ore
laterite
Prior art date
Application number
GR980100484A
Other languages
Greek (el)
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Original Assignee
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
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Publication of GR1003306B publication Critical patent/GR1003306B/en

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  • Inorganic Compounds Of Heavy Metals (AREA)
  • Manufacture And Refinement Of Metals (AREA)

Abstract

The present invention concerns a method for the selective dissolution of nickel and cobalt from laterite ores with the assistance of (a) sulphadisation and (b) oxidative extraction at elevated temperature and pressure. Sulphadisation of the ore takes place in conditions of elevated pressure and temperature in an inert atmosphere. This processing precedes the oxidative extraction during which the nickel and cobalt are selectively dissolved from the nickel-containing laterite, while the dissolution of the iron in the extraction solution is minimised. The stage of sulphadisation of the laterite ore is the main point of the invention and contributes to the increased dissolution of the nickel and cobalt to a significant percentage. The main point of this invention is the sulphadisation of the laterite ore and the subsequent production of a solution of sulphuric acid in situ in sufficient quantity to dissolve the nickel and cobalt contained in the ore.
GR980100484A 1998-12-31 1998-12-31 Method of processing minerals under pressure and high temperature for achieving selective solubility of nickel and cobalt GR1003306B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GR98100484 1998-12-31

Publications (1)

Publication Number Publication Date
GR1003306B true GR1003306B (en) 2000-01-25

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Family Applications (1)

Application Number Title Priority Date Filing Date
GR980100484A GR1003306B (en) 1998-12-31 1998-12-31 Method of processing minerals under pressure and high temperature for achieving selective solubility of nickel and cobalt

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GR (1) GR1003306B (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1354668A (en) * 1972-04-17 1974-06-05 Int Nickel Canada Process for sulphiding nickel-containing materials
GB1365666A (en) * 1972-05-08 1974-09-04 Int Nickel Canada Leaching of sulphide minerals
US4410498A (en) * 1980-11-05 1983-10-18 Falconbridge Nickel Mines Limited Acid leaching of nickel from serpentinic laterite ores
US4548794A (en) * 1983-07-22 1985-10-22 California Nickel Corporation Method of recovering nickel from laterite ores

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1354668A (en) * 1972-04-17 1974-06-05 Int Nickel Canada Process for sulphiding nickel-containing materials
GB1365666A (en) * 1972-05-08 1974-09-04 Int Nickel Canada Leaching of sulphide minerals
US4410498A (en) * 1980-11-05 1983-10-18 Falconbridge Nickel Mines Limited Acid leaching of nickel from serpentinic laterite ores
US4548794A (en) * 1983-07-22 1985-10-22 California Nickel Corporation Method of recovering nickel from laterite ores

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