FIELD: metallurgy.
SUBSTANCE: invention refers to procedure for processing sulphur wastes containing non-ferrous, noble and ferrous metals and for their extraction. The procedure consists in leaching non-ferrous metals from waste and in successive extraction of noble metals from leaching cake. Also leaching is carried out by means of a bacterial complex. The bacterial complex consists of four kinds of acidophilic thion bacteria in an active phase of growth. At leaching micro-organisms are cultivated in a solution and accumulated. For this purpose there is prepared a weak-acid medium; and sulphur waste is actively oxidised. Iron, copper, zinc, arsenic, lead and antimony transit into a liquid phase at iron oxidising rate 24-26 g/l in twenty-four hours.
EFFECT: intensified extraction of gold and silver, additional production of non-ferrous metals and iron containing product, reduced negative effect to environment.
3 cl, 1 ex
| Title | Year | Author | Number |
|---|---|---|---|
| HEAP BIOLOGICAL LEACHING LEAN REFRACTORY MINERAL RAW MATERIALS OF NATURAL AND TECHNOGENIC ORIGIN | 2017 |
|
RU2679724C1 |
| METHOD OF PROCESSING PHOSPHOGYPSUM WITH EXTRACTION OF RARE-EARTH ELEMENTS AND PHOSPHORUS | 2010 |
|
RU2457267C2 |
| METHOD FOR BACTERIAL LEACHING OF MINERAL RAW MATERIALS | 1991 |
|
RU2046938C1 |
| METHOD FOR BACTERIAL LEACHING OF MINERAL RAW MATERIALS | 1991 |
|
RU2046937C1 |
| PROCEDURE FOR PROCESSING SILICATE COBALT-NICKEL ORE | 2007 |
|
RU2395599C2 |
| METHOD OF INTEGRATED TREATMENT OF PYRITE CINDERS | 2016 |
|
RU2623948C1 |
| COMPLEX METHOD FOR RECYCLING OF SLAGS | 2007 |
|
RU2350666C2 |
| METHOD OF PROCESSING TECHNOGENIC IRON-BEARING SLUDGES WITH VALUABLE COMPONENTS | 2008 |
|
RU2387721C1 |
| METHOD FOR EXTRACTING SCANDIUM FROM PYROXENITE RAW MATERIAL | 2010 |
|
RU2448176C2 |
| METHOD OF MANGANESE HEAP BIOLEACHING OF MANGANESE-CONTAINING MATERIALS | 2018 |
|
RU2686158C1 |
