FIELD: mining.
SUBSTANCE: invention refers to open development of mineral placers, particularly to mining and concentration of gold containing placers in winter. The procedure consists in exposing works, in sand excavating and in sand transporting to a basin, in flushing and in dump piling. Also, in winter primary excavation and sand transporting are performed with preliminary piling sand on ice of the basin, while the secondary excavation and flushing are carried out in a warm season.
EFFECT: increased degree of disintegration of hard flushed clayish sand and reduced losses of valuable component.
2 cl, 2 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD OF EXCAVATING GRAVEL DEPOSITS | 2007 |
|
RU2347074C1 |
| METHOD OF DEVELOPMENT OF GRAVEL DEPOSITS | 2007 |
|
RU2353772C1 |
| CLAY MINERAL DEPOSITS DEVELOPMENT METHOD | 2013 |
|
RU2537460C1 |
| METHOD FOR DEVELOPMENT OF DIFFICULT TO WASH AND BOULDER ALLUVIAL MINERAL DEPOSITS | 2019 |
|
RU2716662C1 |
| METHOD FOR EXTRACTING PLACERS AND TECHNOGENIC DEPOSITS OF MINERAL RESOURCES | 2002 |
|
RU2233984C1 |
| METHOD FOR PLACER AND TECHNOGENIC MINERAL DEPOSIT DEVELOPMENT | 2004 |
|
RU2263786C1 |
| METHOD OF UNDERWATER MINING OF PLACER DEPOSITS | 2001 |
|
RU2209976C2 |
| METHOD OF DEVELOPMENT OF CLAY MINERAL DEPOSITS | 2007 |
|
RU2355886C1 |
| METHOD OF DEVELOPMENT OF FLOODED ALLUVIAL MINERAL DEPOSITS | 2015 |
|
RU2598100C1 |
| METHOD FOR EXTRACTION AND PRIMARY CONCENTRATION OF DIAMOND-PLACERS | 2003 |
|
RU2239066C1 |
