FIELD: metallurgy.
SUBSTANCE: invention relates to extraction of precious metals by heap leaching from ores. Method involves crushing ore, storing a pile of ore on a moisture-proof base, mounting a sprinkling system and sprinkling pile of ore with an alkaline solution of sodium cyanide. Pile of ore is sprinkled with an alkaline solution of sodium cyanide, which is pre-saturated with atmospheric oxygen to concentration of 22 mg/dm3 to 26 mg/dm3 on an apparatus with a hydroacoustic radiator. Pile of ore is sprinkled by feeding through sprinkling system oxygen-saturated alkaline solution of sodium cyanide under pressure from 2 atm to 4 atm. Furthermore, ore is pre-crushed to fractions with particle size of 5 mm to 15 mm.
EFFECT: technical result is faster dissolution of gold with simultaneous increase in extraction of gold and shorter duration of heap leaching.
1 cl, 3 tbl, 2 ex
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD OF EXTRACTING GOLD FROM ORES | 2014 |
|
RU2579858C1 |
| REMOVAL METHOD OF GOLD FROM REFRACTORY ORES BY HEAP LEACHING | 2012 |
|
RU2538435C2 |
| METHOD OF HEAP LEACHING GOLD | 2017 |
|
RU2680120C1 |
| METHOD OF CYANIDE LEACHING OF GOLD IN ORE PILES | 2004 |
|
RU2268317C2 |
| METHOD OF HEAP LEACHING OF GOLD | 2003 |
|
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| METHOD OF DISPERSE GOLD EXTRACTION FROM REFRACTORY ORE AND MAN-MADE MINERAL STOCK | 2013 |
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|
RU2476610C2 |
| METHOD FOR RECOVERING GOLD FROM REFRACTORY ORES | 2021 |
|
RU2754726C1 |
| METHOD OF EXTRACTION METALS OUT OF COMPLEX ORES, CONTAINING PRECIOUS METALS | 2007 |
|
RU2336343C1 |
