FIELD: process engineering.
SUBSTANCE: invention relates to production of construction materials, namely to processing of siftings formed in production of broken stone to obtain artificial sands for construction works. In compliance with proposed method, siftings formed in broken stone production are screened to removed fraction finer than 0.16 mm and coarser than 5 mm. Remaining bulk is separated in to fractions of 0.16-2.5 mm and 2.5-5 mm. Then 2.5-5 mm-fraction or its portion is re-crushed to fineness of smaller than 2.5 mm and mixed with 0.16-2.5 mm-fraction. Re-crushing of 2.5-5 mm-fraction is performed in conical inertial or centrifugal crusher.
EFFECT: producing suitable sand, complete use of crushing sifting.
2 cl, 1 tbl, 1 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| MIXTURE FOR PRODUCING ARTIFICIAL GLASSCERAMIC SAND AND METHOD OF PRODUCING ARTIFICIAL GLASSCERAMIC SAND | 2019 |
|
RU2728125C1 |
| METHOD OF PRODUCING CUBE-LIKE MATERIAL IN CONICAL INERTIAL CRUSHER AT MINIMUM RE-CRUSHING | 2009 |
|
RU2423180C1 |
| METHOD OF EFFECTIVE UTILIZATION AS THE FINE FILLER OF THE SIFTINGS OF THE CRUSHED STONE FROM THE IGNEOUS ROCKS | 2005 |
|
RU2284972C1 |
| FAST-ACTING CONCRETE MIXTURE FOR REPAIRING BUILDING CONSTRUCTIONS | 2012 |
|
RU2522588C2 |
| METHOD OF RECYCLING SPENT MATERIALS | 2000 |
|
RU2186637C2 |
| METHOD OF PROCESSING BURNT ROCK TO PRODUCE CONCRETE MIX FILLER AND CONCRETE MIX WITH SAID FILLER | 2011 |
|
RU2462425C1 |
| METHOD FOR GRINDING HIGH-STRENGTH ROCK | 2000 |
|
RU2183994C2 |
| CONCRETE MIXTURE AND METHOD OF MAKING OBJECTS FROM CONCRETE MIXTURE | 2007 |
|
RU2345969C2 |
| COMPLEX PROCESSING OF MARTITE-HYDROHEMATITE ORE | 2013 |
|
RU2521380C1 |
| METHOD OF PRODUCTION OF CUBE-SHAPED CRUSHED STONE IN INERTIAL CONE-TYPE CRUSHER | 2001 |
|
RU2224594C2 |
