River Pebbles Make A Process Sand

River pebbles are relatively hard stones that resemble goose eggs. After the scouring of water, the surface has no edges and corners, it is relatively smooth, and there are few cracks in arts and sciences, and it is difficult to break it. The river pebble is a kind of raw material that can be used as a machine sand, and many dredgers can also dig out a lot of pebbles. Because pebbles and sand are symbiotic with the riverbed, sand and pebbles may have been the same stone long ago.
The pebbles we salvaged are likely to have a part of natural sand. In this case, the mixture of pebbles and natural sand must be salvaged first and then dried. After that, the sand can be sieved out with a trommel, and the remaining part can be broken into coarse crushers. The coarse crusher has a jaw crusher and a single-cylinder cone crusher. In general, the size of the pebble raw material is not more than 400 or less, but if you encounter a large proportion, it is necessary to crush the first crusher with a large model. Jaw crusher, followed by fine jaw crusher or cone crusher. Of course, the final material after crushing still needs to be sieved, and the size (40mm) suitable for entering the sand making machine is sieved and sent to the sand making machine for fine crushing and shaping. After the fine crushing and shaping, part of the sand will be produced, followed by screening on the vibrating screen. The vibrating screen is mainly used to divide the specifications and transfer, generally more than 40 pieces of material will return to the jaw crusher or conical broken again broken, 4.75-40mm of sand to return to the sand making machine broken again, so the cycle, and finally all sand.
Cobble sand production line process
The process of making sand from river pebbles is roughly the same, but it varies slightly depending on the composition of river pebbles. We will give a few simple examples.
River pebbles (without natural sand or natural sand components, raw material d<200mm accounted for 90%): Feeder - fine jaw crusher (HST single-cylinder hydraulic cone crushing) coarse crushing - vibrating screen sieving - Sand making machine finely crushed - vibrating screen sieving - sand washing machine washing - yard dry. Of course, we can also choose dry type, replace the sand washer with a separator.
Mixture of river pebble and natural sand (natural sand accounted for 30%; pebble d<200mm accounted for 90%): vibrating feeder (strip type, fine material can be exposed, sieving on the screen) - finely divided type Crusher (HST single-cylinder hydraulic cone crushing) coarse crushing - vibrating screen screening - sand making machine fine crushing sand -  vibrating screen screening - sand washing machine washing - yard dry.
Mixture of river pebble and natural sand (natural sand accounted for 50%; pebble d<200mm accounted for 90%): Drum sieve - fine jaw crusher (HST single cylinder hydraulic cone crush) coarse crushing - vibrating sieve Sub-sand making machine finely crushed sand--vibrating screen sieving--sand washing machine washing
Of course, there are pebble diameters greater than 200mm, but we can see from the above, the general flow of sand pebbles does not change, the basic is broken - sieving - re-breaking - re-sorting routines. However, the details of the changes are also worthy of vigilance, after all, the user investment is to want a more complete and reliable river pebble solutions, we as sand pebble mill manufacturers, we should do our best to do for the user.