With the rapid growth of the economy in recent years, the speed of urbanization is accelerating, and the demand for sand and gravel aggregates is also increasing. Therefore, the price of sand and gravel aggregates is also rising, attracting more people to invest in machine-made sand. The quality of sand and gravel in the market is uneven. Construction sand has strict quality requirements. High-quality sand and gravel are favored in the market. What is high-quality sand? What kind of sand and gravel production equipment is used to process high-quality sand?
High-quality sand and gravel is made by crushing and screening by crushing and sand making equipment. Rock particles with multiple technical indicators such as shape <8%, water content 3%-5%. The concrete prepared with high-quality sand and gravel has better initial slump performance, greater expansion, and better concrete performance. Due to the adoption of gradation adjustment technology, the gradation of high-quality sand and gravel is more reasonable, with less mud content and less mud content, which can reduce the amount of concrete admixture. The particle shape of high-quality sand and gravel is polyhedral, with small porosity, strong bonding ability with cement paste, and denser concrete.
To process high-quality sand and gravel, the stone is firstly crushed by the coarse crusher, and then the coarse material produced is transported to the medium and fine crusher by the belt conveyor for further crushing, and the finely crushed stone is screened into two kinds of stones by vibrating screen The stones that meet the feed size of the sand making machine are fed into the machine-made sand, and the other part that is not satisfied is returned to the medium and fine crushing.
1. Crushing equipment: jaw crusher, cone crusher, impact crusher, mobile crushing, etc.
The key point of processing high-quality sand and gravel is equipment and process design, and choosing suitable crusher products is the focus and key of production line construction. It is necessary to meet the high standards of production line construction, but also to ensure production efficiency and quality.
2. Sand making equipment: impact sand making machine, vertical shaft sand making machine, vertical compound crusher, etc.
The mechanical equipment for sand making is for the purpose of forming sand. The sand making machine is the core equipment of the entire sand and gravel production line. After the stones pass through the sand making machine, the finished product is of excellent quality, rounded in shape and meets the grading standard.
The more advanced sand-making technology is the vertical impact crusher, which has two crushing modes of rock-on-rock and rock-on-iron. The crushing efficiency is high, the finished sand particles are cubic, and the mud content is low. Environmentally friendly design, automatic circulation inside the vortex chamber, strong sealing, no dust leakage, sound insulation device, low working noise, in line with environmental protection requirements.
3. Screening equipment: vibrating screen, mobile vibrating screen
In addition to the application of crushing and sand making, the terminal equipment is screening, which can guarantee the specification matching of finished products and ensure that more qualified products can be screened. It is a good choice in the actual situation of production and application. At present, the commonly used screening equipment has adjustable specifications and standards, which can improve the accuracy of production.
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