Method for recording nickel by extraction from nickel-containing laterite ore

A method in recovering nickel and possibly cobalt through leaching from inckel-containing laterite ore. Crushed and possibly pre-ground nickel-containing laterite ore is ground in an attritor mill into a size which is suitable for leaching. Then laterite ore in an attritor mill can be leached with l...

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Hauptverfasser: KAUKO KARPALE, ANTTI AALTONEN, ROLF MALMSTROM
Format: Patent
Sprache:eng
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Zusammenfassung:A method in recovering nickel and possibly cobalt through leaching from inckel-containing laterite ore. Crushed and possibly pre-ground nickel-containing laterite ore is ground in an attritor mill into a size which is suitable for leaching. Then laterite ore in an attritor mill can be leached with leaching liquid , e.g. sulphuric acid, hydrochloric acid, or sulphuric acid + SO2, at relatively low temperatures. Nickel and possibly cobalt are recovered from the leaching solution.