FIELD: production of secondary nonferrous metals by nonmetallurgical methods, particularly, from scrap of exhausted nickel-cadmium storage batteries. SUBSTANCE: before leaching scrap is converted into homogeneous loose mass different in magnetic properties which is separated into magnetic and nonmagnetic fractions and subjected to leaching to obtain nickel from magnetic fraction and cadmium from nonmagnetic fraction. The method allows separation of scrap into nickel-containing and cadmium containing fractions before leaching and practical recovery of both components in pure form. Obtained insoluble residue consists, mainly, of iron oxides in the form of commercial product. EFFECT: higher efficiency. 1 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD OF PROCESSING NICKEL-CADMIUM SCRAP | 2002 |
|
RU2222618C1 |
| METHOD OF RECYCLING SPENT CHEMICAL CELLS | 2011 |
|
RU2486262C2 |
| METHOD OF MANUFACTURING ACTIVE MASS COMPONENTS OF NEGATIVE ELECTRODES FOR ALKALINE ACCUMULATORS DURING THEIR REGENERATIVE RECYCLING | 2007 |
|
RU2344520C2 |
| METHOD OF NICKEL-CADMIUM-IRON ALKALINE STORAGE BATTERIES NEGATIVE ELECTRODES ELECTRODE MASS PROCESSING | 2015 |
|
RU2604080C2 |
| METHOD FOR EXTRACTION OF NICKEL AND CADMIUM FROM USED ALKALI ACCUMULATORS AND BATTERIES | 2012 |
|
RU2506328C1 |
| METHOD OF PROCESSING ALKALINE BATTERIES | 2000 |
|
RU2178933C1 |
| METHOD FOR PRODUCING ACTIVE MATERIAL FOR CADMIUM ELECTRODES FROM SPENT NICKEL-CADMIUM ALKALI CELL | 2005 |
|
RU2300828C1 |
| PROCESSING METHOD OF CADMIUM-CONTAINING MATERIALS | 2008 |
|
RU2372412C1 |
| METHOD FOR EXTRACTING CADMIUM FROM SECONDARY RAW MATERIAL | 2011 |
|
RU2469112C1 |
| METHOD FOR PROCESSING NICKEL-CADMIUM SCRAP | 2005 |
|
RU2296170C1 |
