FIELD: metallurgy.
SUBSTANCE: method of nickel extraction from oxide-bearing nickel ores includes nickel heap leaching by sulfuric acid solution. Leaching is carried out in three stages: in the first stage, the concentration of sulfuric acid is 15 g/dm3, in the second and third - 10 and 5 g/dm3, respectively.
EFFECT: obtaining purer nonferrous solutions and reduced reactant consumption due to leaching by weak solution of sulfuric acid.
4 tbl, 3 ex
| Title | Year | Author | Number |
|---|---|---|---|
| PROCEDURE FOR PROCESSING OXIDISED NICKEL-, COBALT-, IRON-, AND MAGNESIUM-CONTAINING ORE | 2009 |
|
RU2393250C1 |
| EXTRACTION METHOD OF NICKEL AND COBALT FROM SILICATE NICKEL-COBALT ORES | 2011 |
|
RU2465449C1 |
| EXTRACTION METHOD OF METALS, MAINLY NICKEL AND COBALT, FROM OXIDISED ORES | 2013 |
|
RU2568223C2 |
| NICKEL-CONTAINING SOLUTIONS PROCESSING METHOD | 2016 |
|
RU2621548C1 |
| PROCEDURE FOR LEACHING NICKEL FROM OXIDISED NICKEL ORE | 2009 |
|
RU2412263C2 |
| METHOD FOR PROCESSING SULPHATE NICKEL-CONTAINING SOLUTIONS | 2018 |
|
RU2674538C1 |
| METHOD OF IN-SITU LEACHING OF OXIDISED NICKEL-COBALT ORES | 2012 |
|
RU2516423C2 |
| PROCEDURE FOR EXTRACTION OF NICKEL FROM SILICATE ORE BY HEAP OR UNDERGROUND LEACHING | 2010 |
|
RU2430980C1 |
| RECOVERY OF NICKEL, COBALT AND OTHER BASE METALS MADE OF LATERITIC ORE WITH USAGE OF HEAP LEACHING AND PRODUCT, CONTAINING NICKEL, COBALT AND OTHER METALS AND RECEIVED FROM LATERITIC ORE | 2006 |
|
RU2355793C2 |
| EXTRACTION METHOD OF NICKEL FROM OXIDISED NICKEL ORES | 2010 |
|
RU2430172C1 |
