In the mining industry friends, the stone crusher machine must not be unfamiliar, the following to talk about the stone crusher related to a few basic concepts.

1、 Comminution

Under the action of external force, the solid material overcomes the cohesion and makes the solid material broken, which is called comminution. The external force can be applied by human, mechanical, electric or blasting methods. Most of the quarrying methods are blasting, while the mechanical method is used to break the large block materials into small ones.

With the grinding process, the total surface area of the material is constantly increasing. Therefore, after the solid material is broken into small pieces or fine powder, the reaction speed of physical and chemical action can be increased. In addition, the mixture of several different solid materials must be in the fine powder state to obtain uniform effect.

2、 Fragility of materials

The difficulty of crushing materials is called fragility. When the same crusher grinds different materials under the same operating conditions, the production capacity is different, which indicates that the fragility of various materials is different. Density, structural uniformity, moisture content, viscosity, crack and fragility are related to the strength and hardness of the material, indicating the material's resistance to external forces, surface condition and shape.

The materials with high hardness and low strength are easier to be broken than those with high strength and low hardness. Obviously, the material with high hardness is not necessarily difficult to crush, but it is difficult to grind, and at the same time, the working surface of grinding machine is easy to wear.

3、 Crushing system

The crushing operation can be completed by different crushing systems. There may be different crushing systems depending on the nature of the material being crushed, the size of the draw, the required crushing ratio, the scale of production and the crusher used.

The crushing system includes two aspects: crushing stage and process in each stage. The number of stages of crushing system mainly depends on the crushing ratio and the type of crusher. In order to meet the requirements of increasing crushing ratio and reducing crushing stages, the crusher will develop to large crushing ratio, high efficiency and large scale.

Due to the continuous improvement and development of crusher, the improvement and development of crushing system has good conditions. At present, the crushing system not only reduces the number of crushing stages and simplifies the production process, but also carries out crushing and drying in a single process at the same time.

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Manufactured sand is the main raw materials for infrastructure, concrete and mortar. At present, there are two types of natural sand and manufactured sand in China. Natural sand with particle size less than 5mm is crushed and screened into stone particles with particle size less than 4.75mm. According to the size of sand, they are coarse sand, medium sand and fine sand respectively, and coarse sand with particle size above 0.55mm is coarse sand, Medium sand is less than 0.5mm and more than 0.35mm, fine sand is between 0.35-0.25mm, and ultra-fine sand is less than 0.25mm.

Artificial sand making process is a kind of industry with small investment and quick effect. In addition, with the acceleration of mechanization in recent years, the sand and stone processing machine has greatly reduced human and material resources, and has low energy consumption, which can easily realize mass production. Bridges and real estate are in a large number of construction, and gravel aggregate is the raw material The demand for aggregate and building aggregate continues to increase, and the production of aggregate and building aggregate equipment is a complete set of artificial sand production line equipment.

The special equipment for aggregate production line is the special equipment for producing sand and stone for construction. The stone equipment includes jaw crusher, stone crusher, impact crusher, vibrating feeder, vibrating screen, sand washing machine, belt conveyor, etc. The equipment has the characteristics of reliable performance, reasonable design, convenient operation and high efficiency.

The artificial sand making process has a high degree of automation. In addition to the start-up, shutdown and routine maintenance of the equipment, the whole production line has simple process and almost no manual operation. It has the advantages of high production efficiency, low operating cost, large output and high profit. The product stone has uniform particle size and good grain shape, which meets the requirements of national high-speed material use.

It can be used for aggregate and artificial sand making of hard limestone, granite, basalt, river pebble, smelting slag and other materials. It is suitable for the application of hydropower, building materials, expressway, urban construction and other industries. It is especially suitable for the production and processing of highway surface material, highway pavement gravel, high-speed railway passenger dedicated line sand and gravel, hydropower station sand and stone, port wharf and airport runway gravel.

The stone production lines are carefully designed for customers according to the on-site investigation or the actual requirements of customers, which fully reflects the rationality, effectiveness and applicability of the design. The remarkable characteristics of the stone production line are large processing capacity, low wear and low operation cost. Strong technical strength and perfect service system is the guarantee for customers to purchase and use at ease. According to different process requirements, various types of equipment are combined to meet different process requirements of customers.

M Sand vs Natural Sand: https://www.sbmchina.com/media/articals/298.html