Skip to main content

The difference between banana screen and circular vibrating screen

Banana screen is a new type of screening equipment. The screen has large processing capacity and can be used for wet and dry screening to replace conventional inclined screens or horizontal screens. So far, two types of banana screens with single-layer and double-layer screens have been developed, and have been popularized in beneficiation and coal preparation plants. Compared with the conventional screening machine, the main advantage of the banana screen is that when the same area of ​​the screen surface is used, the processing capacity of the material can be greatly improved. The screen has been widely used in mineral processing and coal preparation plants that require increased screening capacity but cannot use large-volume screening machines due to plant space constraints.

The working principle of the banana screen is similar to that of the single-layer thin sieve in some respects. The inlet end is an inclined surface, and the rear part is composed of several different inclined sections, and the inclination angle is 100° at the discharge end. The inclined surface of the banana screen is steep at the inlet end, and the material can pass through at high speed, which is beneficial to reduce the thickness of the bed. When the material of larger particle size is passed quickly, the layering time is short, and the material smaller than the sieve size is the most likely to be close to the screen surface and quickly pass through the sieve; The running speed of large-size materials slows down. At this time, materials with a slightly smaller dry sieve size will also randomly pass through the sieve. It can be seen that it is most suitable for screening and grading materials with a large content of fine particles. According to experience, the processing capacity of fine-grained materials with a particle size of less than one-half of the sieve opening size can be doubled compared to conventional sieves.


The screen surface of the banana screen uses metal wire mesh or polyurethane material. The main difference between it and the conventional screen is the setting of the screen surface. In order to increase the penetration rate of the inclined surface of the feed end, the banana screen has a long groove with movable sieve holes, and its length-to-width ratio is 4:1, which has a good penetration rate for fine particle screening. As the inclination angle of the banana sieve gradually decreases, the length of the slot is continuously reduced, reaching the minimum at the discharge end, thus forming a square or hexagonal sieve hole, this sieve hole pair is slightly smaller than the sieve hole size The granular material has a higher penetration rate.

Comments

Post a Comment

Popular posts from this blog

Sandblasting nozzle classification and use

Using high-pressure air as a power source to drive abrasive particles to hit objects within a certain range will produce a great impact. The function of the sandblasting nozzle is to spray abrasive particles on the object evenly and efficiently. Sandblasting nozzles can be divided into: straight hole sandblasting nozzle, Venturi sandblasting nozzle , double Venturi sandblasting nozzle, angle sandblasting nozzle Straight hole nozzle: There are only contraction section and straight section inside, the structure is simple and easy to manufacture. This kind of nozzle cannot overcome the vortex phenomenon existing at the inlet end, and the pressure loss is large; the abrasive velocity at the outlet is less than 100m/s under the pressure of 0.7MPa.
Post a Comment
Read more

Working principle and parameters of industrial slurry pump

In order for the industrial slurry pump to fully play its role, we need to understand the working principle of the industrial slurry pump: https://www.lzzgmachine.com/products/supporting-equipment/slurry-pump.html Under the action of centrifugal force, the liquid is thrown from the center of the impeller to the outer edge and gains energy to leave the outer edge of the impeller at a high speed and enter the volute pump shell. In the volute pump case, the Fluid is slowed down due to the gradual expansion of the flow channel, and part of the kinetic energy is converted into static pressure energy. At last, it flows into the discharge pipe and is sent to the place where it is needed. When the liquid flows from the center of the impeller to the outer edge, a certain vacuum is formed in the center of the impeller. Above the liquid level of the storage tank is greater than the pressure at the pump inlet, the liquid is continuously pressed into the impeller. LZZG slurry pump pe...
Post a Comment
Read more

The difference between quartz and mica

Mica and quartz are common minerals that play an important role in mineralogy. Although they are both silicate minerals, there are clear differences between them. First, mica and quartz are very different in appearance. One of its distinguishing features is that mica exhibits a layered structure that can be easily peeled off into thin flakes. Quartz, on the other hand, is a uniform crystal with no layered structure. Additionally, mica is usually dark in color, such as black, brown, or green, while quartz is usually clear or white. Secondly, mica and quartz also differ in their physical and chemical properties. The hardness of mica is usually between 2.5 and 4, which is relatively easy to be scratched; while the hardness of quartz is very high, 7, which is a very hard mineral. In addition, mica has good refractive properties and electrical properties, while quartz is an excellent piezoelectric material.
Post a Comment
Read more