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

Chromite purification processing method

At present, chromium ores with industrial value are generally chromium-magnesia spinel or chromium-iron spinel minerals, which contain a large amount of chromium oxide, with a content of about 18% to 62%, and generally also contain metals such as aluminum and nickel. Its characteristics make the chromium ore beneficiation process present a rich and diverse state. Due to the properties of chromium, chromium ore beneficiation processes include gravity separation, magnetic separation, flotation, combined beneficiation, chemical beneficiation, etc. Commonly used in industry are single gravity separation, single magnetic separation, and gravity-magnetic combined beneficiation processes. In terms of equipment selection, shakers and jigs are mostly used in the gravity separation stage, while the equipment selection in the magnetic separation stage is determined based on the magnetism of the ore.
Post a Comment
Read more

The classifications of quartz sand

  1. Ordinary quartz sand: The surface of ordinary quartz sand seems to have a layer of yellow skin, and some have large particles and strong fire resistance. It is a kind of quartz sand processed by the manufacturer after using natural quartz ore in the production process, such as washing and drying. No impurities can be seen in the quartz sand through the second water treatment filtration. It is the best choice for chemical water treatment. It can block the sundries suspended in the water and maintain the quality and beauty of the water. 2. Refined quartz sand: Refined quartz sand is a mineral made by the manufacturer after carefully selected quartz stone. According to different requirements of users, the range used is also different. But generally the main use of refined quartz sand is in glass products, because refined quartz sand is refractory and precision casting, especially suitable for fireproof glass materials.
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