FIELD: metallurgy.
SUBSTANCE: method of extraction of sulphide containing ores includes at first stage feeding of water solution of sulphuric acid onto crumbled ore stacked in heap on impervious bed till concentration of not less, than 2.0 g/dcm3 is achieved in solution after leaching, at second stage there is performed feeding of water solution of sulphuric acid containing ions of trivalent iron of concentration more, than 3 g/dcm3. Then productive solutions flowing out of heap are collected and settled, and bivalent iron is oxidized in them with compounds of active oxygen. After metals have been extracted out of productive solutions they are returned for ore leaching.
EFFECT: upgraded degree of sulphides decomposition and extraction of metals; reduced time of leaching, simplicity and low cost of implementation of method and ecological compatibility of process.
10 cl, 2 ex
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD OF HEAP LEACHING OF MINERAL RAW MATERIAL AT NEGATIVE TEMPERATURE | 2007 |
|
RU2337155C1 |
| METHOD FOR MINERALS HEAP LEACHING AT NEGATIVE TEMPERATURE | 2007 |
|
RU2339707C1 |
| METHOD OF EXTRACTION METALS OUT OF COMPLEX ORES, CONTAINING PRECIOUS METALS | 2007 |
|
RU2336343C1 |
| METHOD FOR HEAP BACTERIAL LEACHING OF SULPHIDE-BEARING ORE | 2007 |
|
RU2339709C1 |
| METHOD OF LEACHING OF SULPHIDE CONTAINING PRODUCTS | 2007 |
|
RU2336340C1 |
| METHOD OF HEAP BACTERIAL LEACHING OF SULPHIDE CONTAINING PRODUCTS | 2007 |
|
RU2336341C1 |
| METHOD FOR REPROCESSING OF METAL SULFIDE-CONTAINING PRODUCTS | 2003 |
|
RU2245380C1 |
| METHOD FOR EXTRACTING COPPER FROM SULPHIDE-BEARING ORE | 2011 |
|
RU2471006C1 |
| METHOD FOR UNDERGROUND LIXIVIATION OF SULFIDE COPPER-BEARING POLYMETAL ORES | 1997 |
|
RU2124632C1 |
| METHOD FOR PROCESSING OF SULPHIDE ORES AND PYRRHOTINE CONCENTRATE | 2008 |
|
RU2367691C1 |
