Articles | Kroosh

Screen technology proves its efficiency

Magazine: Mining Weekly, Sept 2002

Author: V.Vasques

Brief: In South African Republic the tests have been carried out which, according to Dr. Adrian Hinde, have shown that KROOSH technology improves screening efficiency by at least 400%. Another effect that Dr.Hinde notes is the absence of mesh clogging due to the multi-frequency screening technology.

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Multifrequency adapter improves screening operation

Powder and Bulk Engineering, December 2003

Author: PBE

Brief: F.W. Winter’s customer requires that the metal alloy powder’s particles be equal to or smaller than 325 mesh (44 microns). To produce the powder at the appropriate size, the company first reduces metal alloy to about 230 mesh (about 75 microns) using a mill. The company then prescreens the material using a single-deck screener with a 230-mesh screen. Particles larger than 230 mesh discharge from the screen’s top and are sent back to the mill for further size reduction. Particles smaller than 230 mesh pass through the screen and discharge into a 2,500-pound-capacity bottom-discharge hopper. Since using multi-frequency KROOSH technology, the company is able to feed the metal alloy powder to the screener about 6 times faster than it could to a screener with an ultrasonic unit. “We were able to increase the feedrate to the screener, and our yield percentage improved".

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X-Line - Screening the impossible - Multi-Frequency Vibration

Magazine: African Mining Brief, Nov-Dec 2019, pages 23-24

Author: AMB

Brief: Multi-Frequency Vibration (MFV) deagglomerates particles by overcoming the interparticle adhesive forces by imparting G-forces above 100G: this allows the effective screening of sticky material, but also prevents bridging of fine material which results in screen blinding. Kroosh Technologies used to be a part of Virto-Cuccolini group therefore KROOSH screeners sometimes are known as X-Line screeners. At the chart 1 we can see Efficiency curves for Virto-Cuccolini X-Line (RS2310.1) versus two different flip-flow screens on South African coal. At the chart 3 we can see Efficiency of the Virto-Cuccolini RS2814.1 compared to the efficiency of a hydrosizer over a 30-day period at a silica mine in South Africa.

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Wet Grinding vs. Dry Grinding for phosphate

Advantages of the wet grinding process for superphosphate production as an alternative to the dry grinding circuit typically used:

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Wet Grinding vs. Dry Grinding for phosphate

Advantages of the wet grinding process for superphosphate production as an alternative to the dry grinding circuit typically used:

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Increased screening efficiency using a Kroosh unit coupled with a Sweco screen up to 810%

Screening efficiency using a Kroosh unit coupled with a Sweco screen may be increased by more than 810%. The Kroosh is a mechanical converter, that converts monoharmonic oscillations to amplified polyharmonic oscillations. Dry screening test was found that for the same screening efficiency, the throughput may be increased by more than 810% by fitting the Kroosh to a standard Sweco.

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Kroosh Screening Technology Achieves Unprecedented Efficiency Gains

Kroosh screen technology utilizes multifrequency vibrations to achieve improvements in screening efficiency over 400% and effective screening

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Screening solution for powder screening problem.

Round vibratory screener Kroosh ULS-48 is perfect for all of these metal powders. Metals, being so heavy and dense, require energy, and this machine produces exponentially higher energy levels than anything else available. This is only one machine had the potential to screen the metal powder successfully. The custom processor using a Kroosh ULS-48 vibratory screener with a multifrequency adapter to achieve nearly 100% efficiency.

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Screening solution for powder screening problem.

Multi-frequency adapter improves screening operation Installing a Kroosher multi-frequency adapter in one screener increased on-size particle yield by 50% and throughput by 600%, allowing them to meet customer needs. After using the multifrequency adapter for several weeks and seeing the positive results Perry says, “We had such success screening fine-sized material with the first multifrequency adapter that we transferred the same technology to other applications and products requiring minus forty-four-micron separation (or smaller). Improvements in screening efficiency have substantially augmented our air classification capabilities geared to ward serving the various markets for fine metal powders.

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