Download Multi Frequency Vibratory Screeners for SIZING of Difficult-to

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Multi Frequency Vibratory Screeners
for SIZING of Difficult-to-Screen
Bulk Solids with embedded
Multifrequency KROOSHER system
PRODUCT LINE
Circular Screeners SXE
Rectangular Screeners ULS
Sieve Analyzers MSA
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provides
Unique Action:
-Continuous SELF-CLEANING of the mesh
-Vibratory-impact processing of the material
-Increased product output
-Improved product quality
-Reduced screen area
Options:
-to reduce aperture size
-to size “impossible”
applications
-Aggregates
-Minerals
-Fertilizers
-Chemicals
-etc. industries
Solves the problems:
-Sticky mesh blinding
-Sticky agglomeration of particles
-Particles Pegging / Wedging
-Low screener output
-Inaccurate separation
suggests:
Dry screening - alternative to usual
wet classification of moist sticky
quarry fines
–Money-saving
–Energy-saving
–Nature-saving
Kroosh Rectangular Screeners:
Major Applications
• Screening of quarry fines and wastes (natural
moisture crushed dolomite, limestone, granite,
basalt, etc.)
• Classification of bulk solids - quartz sands,
silica, coke, etc. (dry but with complicated shape,
near-sized blockage)
• Slurries – classification / dewatering
Major Advantages in Processing
Comparison to traditional screeners:
• Continuous Self-Cleaning of the mesh
• Increased Screening Capacity per sq. m.
Compact design - less necessary space
• Improved product Quality:
More clean oversized product - due to mesh self-cleaning and
disintegration of cohered particles
• Increased undersize output
Self-cleaning and disintegration of cohered particles
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Kroosher® MFV converting system
Beaters
Multi-frequency
converter
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Kroosher® MFV system: properties
•Robust - pure mechanical system
•Realizes the “attractor” mode
Contains :
•actuator (beater grate, bars), supported by
•MF adapters
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Kroosher® system functions
•Converts single frequency
vibration into multifrequency
vibration - repeated impact
pulses
•Amplifies vibration
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Kroosher® MFV converting system functions
•Transmits activation to the sieve
•Distributes it evenly over the sieve
surface via an interface device
(rigid support screen, perforated
plate, etc.)
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Multifrequency activation:
•Normal acceleration of the sieve
up to 500 Gs
•Pulses – locally, at the sieve surface
Filtering: body has traditional acceleration 4-6 Gs
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Self-Cleaning of the Sieves
•Prevents wedging, clogging particles
•Near-sized particles “dance” and
leave the openings
•Sieve wires shake off adhered
particles
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Multifrequency activation of the bed
Fluidization – loosening and stirring of
particles inside the material bed
Accelerated stratification - small particles are
quickly submerged down to the sieve
•No need a long way for separation –> lesser required
screen area
Disintegration of agglomerates (cohered
particles) onto separate particles – which pass
via the aperture
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Multifrequency activation:
Vibratory fluidization/boiling –>
loosening and stirring of particles
inside the material bed
Intense fluidization quickens
stratification of the bed
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Multifrequency activation of the bed
Stratification
•accelerated
•small particles are submerged down to
the sieve quickly
•Less way need for separation
•Less required screen area
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Multifrequency activation
Disintegration
•Agglomerates cannot pass via the
aperture;
•MF activation disintegrates clusters
on pluralities of separate particles;
•These smaller particles (former
agglomerates) now can pass via the
aperture
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Multifrequency activation:
Disintegration Effects:
•Increased undersize output
•Improved quality of products
•Usual wet screening processing
may be replaced with dry screening
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Multifrequency advantages
•Shorter way is need for particle to pass
via the aperture
•Lesser length is need to reach good
separation quality
•Lesser required screen dimensions
•Lesser residence time on the screen
•Increased screen capacity
•Improved separation quality
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ULS: Major adjustments
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•
•
•
•
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Vibrator weights
Frequency
Direction of weights rotation
Sieve tension
Body inclination
ALL OUR
PRODUCTS
meet
international
quality standard
ISO 9001-2000
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Attractor Method
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1.
We use mathematical simulation to get these vibratory impact
modes stable - in spite of changes in processing load
2.
We use “strange attractor” nonlinear phenomenon
3.
Attractor effect provides stable boosted vibration mode of the
system under fluctuations of the load
4.
Multifrequency wide-band spectrum vibration enables screened
material to absorb vibration energy optimally
5.
Useful part of energy, transferred to the screened material,
increases several times with regard to conventional screeners
6.
Distribution of energy over frequency spectrum may be
optimized for each specific application
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