FIELD: metallurgy.
SUBSTANCE: proposed method comprises selective flotation, gold extraction from flotation wastes, biological oxidation of concentrate, neutralisation and gold extraction. Note here that selective oxidation is carried out with isolation of arsenopyrite and pyrrotine concentrates and tailings. Gold is extracted from tailings by gravity. Biological oxidation is performed in two steps. At first step arsenopyrite concentrate is fed while, at second step, pyrrotine concentrate is fed. Sulphides and elemental sulfur are extracted from biological oxidation pulp to be divided into solid and liquid phases for solid phase to be neutralised. Now, gold is extracted separately from said solid and liquid phases.
EFFECT: lower costs, simplified process.
4 cl, 2 dwg, 1 tbl, 2 ex
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD OF PROCESSING REFRACTORY PYRITE-ARSENOPYRITE-PYRRHOTITE-ANTIMONITE GOLD ORE (VERSIONS) | 2015 |
|
RU2592656C1 |
| METHOD FOR PROCESSING REFRACTORY PYRRHOTITE-ARSENOPYRITE-PYRITE-BERTHIERITE-STIBNITE GOLD ORES (OPTIONS) | 2023 |
|
RU2807008C1 |
| METHOD FOR PROCESSING REFRACTORY PYRRHOTITE-ARSENOPYRITE-PYRITE-BERTHIERITE-STIBNITE GOLD ORES (OPTIONS) | 2023 |
|
RU2807003C1 |
| PROCEDURE FOR PROCESSING ANTIMONY-ARSENIC SULPHIDE GOLD CONTAINING ORE | 2010 |
|
RU2432407C1 |
| PROCEDURE FOR EXTRACTION OF METALS OUT OF MINERAL RAW MATERIALS | 2009 |
|
RU2418869C2 |
| METHOD OF REWORKING OF AURIFEROUS ARSENICAL ORES AND CONCENTRATES | 2003 |
|
RU2234544C1 |
| METHOD OF REPROCESSING OF PRIMARY GOLD-SULFIDE ORES | 2004 |
|
RU2256712C1 |
| METHOD FOR HYDROMETALLURGICAL PROCESSING OF BACTERIAL OXIDATION CAKE | 2023 |
|
RU2806351C1 |
| METHOD OF CONTROLLING PROCESS OF BIOOXIDATION OF SULPHIDE CONCENTRATES | 2013 |
|
RU2552207C1 |
| PROCEDURE FOR EXTACTION OF METALS FROM GOLD CONTAINING SULPHIDE-OXIDISED COPPER ORES | 2009 |
|
RU2428493C1 |
