Cobblestone is an accessory product of mining yellow sand, named because it resembles a cobblestone As a kind of pure natural stone, pebbles have experienced continuous extrusion and friction during the formation process, such as mountain torrent impact and water transportation, they are hard in quality and have good compression resistance. Therefore, the quality of sand prepared from pebbles is very guaranteed, which is reflected in the following aspects:
1. Pebbles have high hardness, the sand produced is hard enough, resistant to compression, abrasion and corrosion. It can reach the same hardness as river sand, substituting river sand is no problem.
2. The grain shape is good, the sand making machine has its own shaping effect, the sand produced is round and the content of stone powder is controllable.
3. The grading is uniform, the sand of different specifications can be adjusted, and the fineness modulus can be adjusted conveniently (2.2-3.2).
4. Good quality, the finished product is free of cracks, fine lines and segregation of coarse and fine particles, which meets the national building sand standard.
With regard to the profit, the sand and stone market has not fallen back at present and remains in a good state. The sand made from pebbles is of good quality and has no worries about sales, the profit is naturally very considerable, you can learn about the local market.
