With the rapid development of the economic foundation, machine-made sand has ushered in a peak period. The emergence of machine-made sand has played an active role in the development of infrastructure. At present, the raw materials of machine-made sand are widely distributed in China. The abundant resources are resistant to pressure and resistance, corrosion, hard quality, excellent conditions for infrastructure.
- What is the sand standard for using pebbles?
Natural sand is naturally generated. The artificially mined and sieved rock particles with a particle size of less than 4.75mm, including river sand, lake sand, mountain sand, desalinated sea sand, etc., and sand after pebbles processing is also machine-made sand＜4.75mm, reasonable gradation, and also meet the construction sand standard!
Cobblestone is easy to obtain materials, and more importantly, it is hard in texture, resistant to compression and corrosion, and is a good raw material for artificial sand. The advantage of using pebbles and gravel materials is that it not only improves the physical indicators of cement concrete, improves the crack resistance, but also achieves good technical, economic and social benefits. The crushed pebbles can provide a large number of high-quality building materials for water conservancy and hydropower, highways, high-speed railways, passenger dedicated lines, bridges, airport runways, municipal engineering, high-rise buildings and other projects. In addition, it can also provide ceramics, precision casting, papermaking, and blasting, chemical industry, monocrystalline silicon, etc. to provide raw and auxiliary materials. For example, in most areas, roads and off roads and in the construction industry in cities uses cobblestones or crushed cobblestones. Cobblestones and crushed cobblestones are used in the cushion graded gravel and cement stabilized gravel subbases of most of the bridge structures and pavement engineering structures in many expressways.
- What equipment is used to process pebbles?
Cobblestone is a kind of high-hardness material and has different particle sizes. Here, we choose the large-sized pebbles. The main equipment used is jaw crusher, cone crusher and sand making machine.
Jaw Crusher
It is commonly used initial crushing equipment, and a crushing machine that general stone plants will not lack for ore crushing. Its feed inlet is large, and the particle size of the stone is usually relatively large, so this equipment is a whole cobblestone production line the necessary initial breaking equipment. The jaw crusher not only has a large feed inlet, but also has strong compression resistance. It is also a good choice for processing high-hardness cobblestone materials.
Cone crusher
Cone crusher adopts the working principle of laminated crushing. The discharge size is uniform and the grain shape is good. It is one of the special cobblestone crushers for processing broken pebbles. Generally, the raw cobblestone enters the jaw crusher through the vibrating feeder and passes through the jaws. The type crusher processes the stones into smaller pebbles particles, and then uses the secondary crushing equipment cone crusher or counter-attack crusher to process the stones into the pebbles that meet the particle size.
PLS sand making machine
PLS sand making machine is also a new generation of cobblestone sand making machine. The finished product particle size is less than 5mm, the particle size is uniform, and the needle-shaped product is small. The traditional sand making machine center feeding method is changed to center + peripheral feeding method. Increase the feed rate by 30%. It also has a combined throwing head. Under the long-term production of the PLS sand making machine, if the parts of the machine are worn out, only the severely worn parts can be replaced, and the operation can be continued without delay in working hours. No need to worry about output.