Vibrating screen for mining not only plays a key role in material screening, but also its reliable performance and efficient screening capacity ensures the smooth progress of mine production. Types of mining vibrating screen
There are various types of vibrating screens for mining, and the common types are as follows:
Linear Vibrating Screen (Linear Vibrating Screen):
Features: synchronized vibration is generated by the eccentric blocks of two vibrating motors, and the material makes linear movement on the screen surface. It is suitable for screening materials with more uniform particle size and lower humidity.
Application: Suitable for coarse and fine grading screening in ore, coal, sand and gravel, building materials and other industries.
Advantages: simple structure, easy maintenance, large processing capacity, low energy consumption.
Circular Vibrating Screen (Circular Vibrating Screen):
Characteristics: through the rotation of vibration motor or eccentric wheel to produce circular or oval vibration, the material on the screen surface to do circular trajectory movement.
Application: Mainly used for screening bulk materials such as ore, sand and gravel, coal, etc., especially suitable for materials with large particle size.
Advantages: high screening efficiency, wide range of application, suitable for large handling capacity of production needs.
High-frequency Vibrating Screen (High-frequency Vibrating Screen):
Characteristics: fine-grained materials are screened out through high-frequency vibration, usually used for screening fine materials. Its vibration frequency is higher than that of ordinary vibrating screen, which can effectively screen out fine particles.
Application: It is suitable for fine screening in mines, especially for grading fine-grained ores, sand and concentrates.
Shaker Screen (Shaker Screen)
Characteristics: the equipment generally adopts shaking mode, so that the material on the screen surface is “shaking” state, to achieve the purpose of screening.
Application: mainly used in mine beneficiation, slurry processing and other processes, especially in ore recovery, fine-grained minerals have applications in screening.
Drum Screen
Characteristics: a kind of rotating drum to carry out screening equipment, the material through the mesh of the drum screen is divided into different particle size of the material.
Application: usually used for preliminary screening of coarse materials, such as coarse screening of ore raw materials. The working principle of mining vibrating screen
Vibration source: mining vibrating screen usually produces vibration through vibration motor or exciter. The vibrating motor is driven by double or single motors, and the motor generates centrifugal force through the rotation of the eccentric block, which makes the screen vibrate. The rotation direction of the two synchronized motors is usually opposite, so that the material does linear or circular movement along the screen surface.
Screening process: the material passes through the screen surface under the action of vibration, the smaller particles of the material pass through the aperture of the screen mesh, while the larger particles are blocked on the screen surface, and finally output according to the particle size classification.
Material flow trajectory: different types of vibrating screens have different effects on the flow trajectory of materials. For example, the linear vibrating screen makes the material move along the straight line direction, while the circular vibrating screen makes the material move along the circular trajectory. The flow trajectory and vibration mode of the material directly affect the screening effect and screening efficiency.
Application fields of mining vibrating screen
Vibrating screen for mining is widely used in the following fields:
Ore classification: different particle size ores are classified and processed through screening technology for subsequent operations such as ore dressing and crushing.
Coal screening: In coal mines, vibrating screens are used for coal screening and grading to ensure the efficient utilization of coal with different particle sizes.
Sand and gravel screening: It is used for screening of sand, gravel, building materials and other materials to ensure the quality and utilization of raw materials.
Metal Ore Beneficiation: In the process of metal ore beneficiation, vibrating screen is used for ore screening to remove impurities and separate different minerals.
Metallurgical industry: It is used for fine screening and grading of minerals, metals and non-metallic materials to ensure the quality of raw materials in the smelting process.
Maintenance and upkeep
Vibrating screen for mining may have problems such as screen mesh damage and motor failure in a long time of work, so regular inspection and maintenance are crucial. Common maintenance steps include:
Check the vibrating motor: regularly check the working condition of the motor, clean the debris around the motor, and ensure that the motor dissipates heat normally.
Screen inspection and replacement: the screen may be broken or clogged after long-term use, which needs to be regularly inspected and replaced as needed.
Lubrication maintenance: regular lubrication of vibrating parts to reduce friction and extend the service life of the equipment.
Fastening inspection: check whether the connecting parts are loose, and fasten them in time to prevent the vibrating parts from falling off.
In short, mining vibrating screen as an important part of mining equipment, has a very important screening function, reasonable selection and use of vibrating screen can improve the efficiency of mining production, to ensure product quality.
