Eramet

Yves Le Quesne

Jérôme Agin

Bertrand Berthomieu

Process for the treatment of a lateritic nickel/cobalt ore consisting of a mixture () of limonite and saprolite, characterized in that: the mixture () in the presence of an iron-precipitating agent is made into a pulp (), having a solids content of between 10 and 40% by weight; the pulp undergoes a leaching operation () with sulphuric acid (), at a temperature between 70&#xb0; C. and the boiling point and at atmospheric pressure; and a solid-liquid separation () is carried out so as to obtain an iron-containing solid residue () and a solution containing nickel and cobalt ions. Process for producing nickel and/or cobalt intermediate concentrates or commercial products using the above process.

Process for the hydrometallurgical treatment of a lateritic nickel/cobalt ore and process for producing nickel and/or cobalt intermediate concentrates or commercial products using it

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Rambouillet, France

Yves Le Quesne