Vibrating screens are the most important screening machines primarily used in the mineral processing industry. They are used to separate feeds containing solid and crushed stones.
When choose suitable stone crusher screen, it needs to notice:
There are a large amount of stone powder particles in the production of machine-made sand, and the requirements for grading distribution are relatively high. It is not suitable to use rectangular and round sieve holes. Square hole sieve is generally used.
2. Vibrating screen mesh size
The choice of mesh size directly affects the quality and production of machine-made sand. The larger the size of screen, the larger the sand fineness modulus and the lower the content of stone powder.In the general sand making process, the recommended mesh size is 3.5-4.5mm.
3. Screen surface inclination angle
In order to achieve better screening efficiency and throughput of materials. According to the experience of the vibrating screen manufacturer, the inclination of the screen surface is generally about 20 °.
Vibrating screen for stone crusher
The vibrating screen is mainly responsible for the screening and grading of materials in stone crusher plant and sand making plant. It plays the role of connecting and transferring in the whole crushing plant. At a typical sand and gravel plant, raw material from a hopper at a dumping station is carried by a conveyor belt to a vibrating screen machine. The screening deck removes oversized material (large clay balls, roots, very large rocks, etc.), separates sand from gravel, and then separates the gravel into different sizes.
How to improve stone crusher screen efficiency?
The vibrating screen is the screening equipment in the stone crushing line, and its working efficiency also affects the overall efficiency of the sand making production line. There are many types of vibrating screen equipment. When we choose to use vibrating screens, we can refer to the following suggestions:
1. Characteristics of screening materials
When purchasing a vibrating screen, the characteristics of the screened material should be considered in advance, including the particle size requirements of the screened material, the content of difficult-to-sieve materials such as impurities in the material, the water content of the material, the appearance, shape and specific gravity of the material, clay content etc.
2. Performance of vibrating screen
The screening efficiency of the vibrating screen is closely related to the screen area, the number of layers of the vibrating screen, the shape, size and area ratio of the screen hole, as well as the movement mode, vibration frequency and amplitude of the vibrating screen. The moving screen can shake the particles of the material to be screened on the screen surface in a direction close to the vertical screen hole, increasing the vibration frequency of the material, with high screening efficiency and better screening; the opposite is true for the fixed vibrating screen, which makes the screening efficiency lower .
According to the occasion where the vibrating screen is used and the role it plays in vibrating, different types of vibrating screens are selected. Generally, circular vibrating screens are used for pre-screening of materials; large-scale circular vibrating screens, probability screens, etc. are used for grading and screening of materials after primary and secondary crushing; linear vibrating screens are used for dehydration and other mediation treatment of materials; For mud and sand cleaning, probability sieves are used.
4. The needs of the crushing process
When selecting a vibrating screen, it is also necessary to consider the overall production capacity, screening method, screening efficiency and the inclination angle of the vibrating screen installation of the sand making production line. In the case of meeting the particle size and output requirements of the machine-made sand product, it is necessary to choose a non-metallic screen surface with a large screen hole size, a large effective screening area, a suitable screen hole shape, and a high screen surface opening rate. The installation inclination angle of the vibrating screen is adjusted to 15-20 degrees, which can effectively improve the efficiency of screening materials.
FAQ:
1. What is a vibrating screen?
Vibrating screen is a rectangular single-, double-, and multi-layer, high-efficiency new screening equipment. It does circular trajectory, so also known as the circular vibratory screen. The screen machine is ideal equipment in rock crushing and screening plant.
2. What is the principle of vibrating screen?
The vibration is generated from an unbalanced flywheel. A very erratic motion is developed when this wheel is rotated. Screens that are rapidly vibrated with small amplitude, keep the material moving and prevent binding as far as possible.
3. What does a circular vibrating screen do?
Circular vibrating screen is also called circular-motion vibrating screens. It is used to classify medium to coarse-grained bulk materials (5.0 mm to 100 mm) for screening.
2024-11-15
86-15093113821
86-15093113821
