FIELD: metallurgy.
SUBSTANCE: invention concerns metallurgy field. Particularly it concerns nickel recovery methods from oxidised nickel ore. Method includes grinding of nickel ore, its mixing to sulphur addition and chlorides of alkaline or alkali-earth metal, mixture burning at presence of water steam with further cooling. After cooling it is implemented sulfuric acid leaching of burnt mixture and further treatment of productive solution. At that before burning mixture of grinned ore with admixtures is subjected to graining and drying, and after burning granulated mixture is cooled on air with further keeping on air.
EFFECT: increasing of filtration speed of burnt ore after sulfuric acid leaching, decreasing of ferrous iron content in productive solution, simplification of process instrument appearance and reduction of expenditures for method implementation.
2 tbl, 2 ex
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD OF NICKEL EXTRACTION FROM ORE | 2007 |
|
RU2352653C1 |
| METHOD OF NICKEL EXTRACTION FROM OXIDE NICKEL ORE | 2007 |
|
RU2352656C1 |
| METHOD FOR EXTRACTING OF NICKEL AND COBALT FROM NICKEL ORES | 2004 |
|
RU2267547C1 |
| EXTRACTION METHOD OF NICKEL FROM OXIDISED NICKEL ORES | 2010 |
|
RU2430172C1 |
| EXTRACTION METHOD OF METALS, MAINLY NICKEL AND COBALT, FROM OXIDISED ORES | 2013 |
|
RU2568223C2 |
| PROCESSING METHOD OF NICKEL-BEARING SOLUTION FOR RECEIVING OF NICKEL CONCENTRATE | 2007 |
|
RU2352657C2 |
| METHOD OF SEDIMENTATION OF NICKEL AND COBALT SULFIDE CONCENTRATE FROM SULFURIC ACID SOLUTIONS | 2005 |
|
RU2281978C1 |
| METHOD OF UNDEGROUND LEACHING OF OXIDISED NICKEL ORES, CONTAINING FERROUS AND MAGNESIA ORES | 2006 |
|
RU2353754C2 |
| METHOD FOR UNDERGROUND LEACHING OF NICKEL | 2006 |
|
RU2381355C2 |
| PROCEDURE FOR LEACHING NICKEL FROM OXIDISED NICKEL ORE | 2009 |
|
RU2412263C2 |
