As an important raw material for the construction of buildings, roads, bridges and other infrastructures, the quality of sand and gravel aggregate is directly related to the quality and service life of the project. With the progress of science and technology and the improvement of engineering requirements, the quality requirements of sand and gravel aggregate are also improving. In this context, the choice of sand making equipment is particularly important. In this paper, we will introduce several common sand making equipment and discuss its impact on the quality of sand and gravel aggregate.
I. Importance of sand and gravel aggregate quality
Sand and gravel aggregate is the main component of concrete and mortar, and its quality directly affects the strength, durability and working performance of concrete and mortar. High-quality gravel aggregate should have good particle shape, gradation and rationalization, low mud content, less harmful substances and other characteristics. Such gravel aggregate can better combine with cement and other cementitious materials to form a uniform concrete structure, thus improving the quality and safety of the project.
Second, the types of sand making equipment
Jaw crusher is a kind of common sand making equipment, which can break the raw materials to the appropriate size. Its main features are simple structure and easy operation. However, due to the action characteristics of the jaw plate during its working process, it is easy to produce high content of flaky sand, which reduces the quality of gravel aggregate.
2.Vertical shaftimpact crusher
Vertical shaft impact crusher is a kind of commonly used sand making equipment, which drives the high-speed rotor by rotary motor to impact the raw materials, and crushes the raw materials into the required sand and gravel aggregate. Vertical shaft impact cr usher has the advantages of high crushing efficiency and low energy consumption, but it has higher requirements on the hardness and moisture content of raw materials, which can easily cause fluctuations in the quality of sand and gravel aggregate.
3. Cone Crusher
Cone crusher is a common type of sand making equipment, which utilizes the movement of cone to crush raw materials into required sand and gravel aggregate. Cone crusher has the advantages of large crushing ratio and even size of discharged material, which is suitable for crushing stone materials with medium hardness or above. However, due to its complex structure, it has higher requirements for maintenance and overhaul.
