The Role of High-frequency Vibrating Screens in Mineral Processing

July 30, 2020

Mechanical screening machines are generally utilised to take granulated ore material and separate it into numerous grades of materials through their particle size. They are typically composed of a drive, a screen media, and a deck. These machines are typically used in numerous industries like mining and mineral processing, agriculture, pharmaceutical, food, plastics, recycling, and many more.

To date, there are various types of mechanical screening machines that has a unique set of features and properties. One of these types is the high-frequency vibrating screens. This type of screening machine is most used in the mineral processing industry because of its efficiency and other notable factors.

Notable Features of High-frequency Vibrating Screens

High-frequency vibrating screens are used to take wet or dry granulated ore material down to approximately 200 micrometres in size. They work at an inclined angle that ranges between 0 to 45 degrees, operate at a low stroke, and contain a frequency that ranges from 1,500 to 7,200 revolutions per minute. The vibration frequency of these screens is regulated and set by an electromagnetic vibrator that is mounted above and connected to the screening surface.

Unlike other mechanical screening machines, high-frequency vibrating screens have a stationary sieve box. Moreover, the gap width of these machines is adjustable, enabling the classification of materials according to their size and useability. Fine particles that are beneath the vibrating screens are discarded to avoid excessive crushing and repetitive grinding. Fine particles that come from the small gap, however, are stored and kept for other purposes.

Mineral Processing with High-frequency Vibrating Screens

High-frequency vibrating screens are best employed for mineral processing activities due to their ability to yield highly accurate size control. Ferrous metals ore and nonferrous metals ore are both processed under mineral processing. After crushing and mashing these ores, they are then fed into high-frequency vibrating screens to precisely select materials that will be processed for the next phase.

One great example of utilisation of high-frequency vibrating screens is a closed grinding circuit. It has one or more mills that release and discharge ground products into high-frequency vibrating screens. These screens will then filter and bring back any coarse product to the mill machines for additional grinding. All the fine-grain materials, on the other hand, are unloaded appropriately to avoid excessive crushing and repetitive grinding.

Any mineral processing activities that highly consider the fineness of materials recovered can easily benefit from high-frequency vibrating screens. Quick smaller size separation is also possible thanks to the capabilities of high-frequency vibrating screens, which easily reduces overall energy consumption and obtain high-quality final products.

To know more about high-frequency vibrating screens, just give us a call at Hawk Machinery. We were established in Melbourne, manufacturing and supplying crushing, screening, feeding, and conveying equipment to the extractive industry together with plant layout and turnkey projects. New products manufactured wholly in Melbourne Australia are being added to the range to provide a wider scope for our customers’ needs.

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