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

The significance of high pressure large ball press machine

information about ball press machine Ball press machine  is a key suppressing machine in the pellet technology complete equipment developed and designed on the principle of extrusion molding for powder material. Our company received the national patent of invention certificate of large ball press machine with patent No. ZL2007.1.0163951.4. Recently, the first GY2412 ball press machine has been successfully manufactured in our factory with diameter of press roll 2.4 meter and width 1.2 meter. The capacity of the machine can reach 50-100t/h according to different material. Our product is the largest  high-pressure ball press machine  of highest pressure and largest capacity featuring in advanced product design theory, rational structure, affordable forcing feeding, adjustable pressure, feeding intellectualization, ball production automation with inlaid rolling skin easy to exchange and maintain. The significance of ball press machine  I t helps realize the lar...
Post a Comment
Read more

Several types of flocculation tanks

The concentrator is a continuous working concentration and clarification equipment. It is mainly used for dehydration of fine and tailings pulp in wet beneficiation operations. It is also widely used in the concentration of solid slurry in coal, steel, chemical, building materials, water sources and sewage treatment. And purification. The ordinary concentrator works reliably, has low operating costs, and can store and buffer the feedstock. However, it is based on the gravity sedimentation of the particles. The sedimentation velocity is proportional to the square of the particle diameter, which is used to treat the microparticles and has low efficiency. The high-efficiency concentrating machine mainly uses the reasonable use of flocculant and the cloth feeding method at the bottom to increase the sedimentation speed, which is one of the most important progress in the concentration technology. Different type of flocculation tanks Thickener tanks , Deep Cone Thickener, Sludge Thi...
Post a Comment
Read more

Slove method of the clogging of trommel screen sieve

The drum screen is a simple screening device.  The trommel screen  is easy to close and collect dust, the maintenance is small, the maintenance is simple, and the service life is long. It is a device frequently used in refractory materials, coal, river sand classification, and sandstone classification. The advantage of the trommel screen is that the structure is not complicated so that the device can be quickly operated, and when the trommel has problems, people can easily solve it. But what should I do when the screen of the trommel screen is blocked? The following screen will introduce several ways to solve the phenomenon of blocking the net. The trommel screen sometimes adopts a mechanism added to the fixed frame, and then the mechanism rotates to drive the belt mounted on the belt to continuously smear the surface of the sieve hole, thereby sucking out the raw material particles blocked in the sieve hole. One of the disadvantages in practice is that it produces a lot ...
Post a Comment
Read more