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Screening MachinesProcess Equipment
Circular and elliptical
motion screens,
double counterweight screens
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Modern screening plants
CAD sketch o a triple deck circular motion screening machine with 1 tons vibrating weight
Modern screening plants are judged by the quality o
material produced, specic throughput, sustainability,
rigid design, availability, power consumption andpersonnel required, in other words, the overall
economy.
The ever increasing demand or higher throughputs,
calls or larger machines, not least because they are
more economical. Having recognised this trend decades
ago, SIEBTECHNIK started to develope and manuacture
large screening machines, or preparation plants with
high capacities.
The SIEBTECHNIK screens with widths up to 5.5 m andlengths up to 11 m have been used successully in the
important industrial and mining nations.
At the same time, our wide range o screening machines
or small and medium capacities is also being developed
urther using up to date technology. We build andsupply specialised screening machines or pre-screening,
underwater screening and sand-screening.
They can be mobile, stationary, with dust covers, or or
classiying under inert gases etc.
According to process requirements crosswise and
longitudinally tensioned wire meshes, pressure welded
grids, polyurethane panels o all leading suppliers, punch
plates as well as stepped grizzly grids can be applied on
our machines.
All machines are designed with modern CAD-Systems
and present o the shel or tailor made solutions or
almost any screening problem.
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Circular motion screening machine "REKORD"
Applications sand and gravel, building materials
rocks, crushed stone, chippings
minerals, copper an iron ores, pellets, sinter
coal, coke, petrol coke
chemical products, ertilizers, granular materiale
salts, sugar
compost, reuse, reuse slags
Operational characteristicsSIEBTECHNIK circular motion screens are reely vibrating.
This means that the amplitude is sel regulating
depending on the relationship between the weight othe screen itsel and the counterweight. Circular motion
machines have a steep angle o throw and thereore
require an inclination o 10 - 18. Exceptions are the
dewatering screen at - 5 and steep screens, or
example when screening sand at an angle o 0 - 0.
Machine detailsThe screen rame, consisting o side plates and cross-
members, absorbs all static and dynamic orces. The drive
shat with counter weights runs in roller bearing
which are positioned at the centre o gravity. Drive is either
via V-belts or fexible coupling.
Larger machines can be additionally equipped with a
primary shat and centriugal coupling. Lubrication o the
bearings is either by oil or grease.The screen rame with
sets o springs rests on the support construction and
can be manuactured to accept lengthwise or crosswise
tensioned sieves as well as fat panels.
For dusty materials we can supply the machines with either
a dust hood or a complete dust enclosure.
Circular motion screen REKORD, with decks
Single deck Multi deck
Technical Data
Eective width mm rom 00 up to 700
Eective length mm rom 800 up to 8000
Inclination degree rom 8 up to 0
Speed min-1 rom 800 up to 000
Amplitude mm rom up to 1Angle o throw degree rom 75 up to 85
Vibrating weight t up to 1We reserve the right or technical changes.
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Circular motion screening machine "REKORD"
Circular motion screen REKORD,
in two deck execution with water
sprays on both decks, or washing
and classiying uncrushed gravel.
Separation 8 mm and mm.
Linear motion screening machine type HR/HR-E
For applications requiring smaller
linear motions screens up to 1.500
mm in length and .000 mm in width
(e.g. dewatering o sand or gravel,
drilling mud, combustion chamber
slag) we design horizontal, inclined or
declined linear motion screens with
unbalanced motors xed at the top orbelow the screen deck.
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Applications sand and gravel, building materials
rocks, crushed stone, chippings minerals, iron and copper ores, pellets, sinter
coal, coke, petrol coke
chemical products, ertilizers, granular material
salts, sugar
compost, reuse, reuse slags
aggregates and limestone
Operational characteristicsSIEBTECHNIK double counterweight screening machines
are reely vibrating with a linear motion. The angle o throwis determined by the construction and application but is
usually 5 - 0.
The counterweight can be adjusted in stages rom
50 - 100 %. In this way the amplitude can be adjusted to
meet the operational reqirements.
Machine details The screen rame, consisting o side plates, cross-
members and drive, will absorb all static and dynamicorces. In most cases but not always the double
counterweight drives (exciters) are located above the
screen panel on rigid support beams. Six gearbox sizes
allow a good selection or a speciic application.
The drives are easily and quickly changed. The exciters
are designed, manuactured and i rerquired maintained
by SIEBTECHNIK. Power transmission rom the motor is
via coupling or V-belts.
spring units connect the machine to the support
construction. Recoil action is minimal. Nonetheless
SIEBTECHNIK designs, manuactures and delivers tailormade isolation rames or urther reduction o dynamic
loads i required.
The screen rame can be manuactured or lengthwise
or crosswise tensioning as well as lat decks.
Double counterweight screen HG, with gearboxes, size 1 S
Double counterweight screening machine "HG"
Technical Data
Eective width mm rom 800 up to 5500
Eective length mm rom 1900 up to 11000
Inclination degree rom 0 up to 0
Speed min-1 rom 700 up to 1000
Amplitude mm rom up to 1Angle o throw degree rom 5 up to 0
Vibrating weight t up to > 0We reserve the right or technical changes.Single deck Multi deck
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Double counterweight screen HN,with dustproo, insulated enclosure,
or classiying asphalt aggregates at
nearly 00 C to be assembled on top
o an asphalt mixing plant.
Double counterweight double
deck screen HG, equipped with
SIEBTECHNIK exciters size 1 or the
classiication o washed coal.
A row o closed double counter-
weight screens HG-C with drive below
the screen deck or the treatment o
reuse incineration residues.
Double counterweight screening machine "HG"
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Applications coal, raw and washed
iron and copper ores, minerals,granular material, pellets
potash and halite
aggregates, limestone
sand and gravel, building materials
Operational characteristicsSIEBTECHNIK Banana screens are high speed screening
machines. Due to the steep screen inclination, high
transport speeds are achieved. A very ine layer is
ormed and a large proportion o the ines pass through
the elongated apertures. The inclination is less in the
middle and discharge sections, which reduces thetransport speed. In these sections a good separation,
even o marginal particles, is achieved.
SIEBTECHNIK "Banana" screens achieve a very accurate
separation, even with extremely high eed rates and
diicult material. Originally Banana screens weredeveloped or two separations and have proved
themselves in that ield. However they have also been
used successully many times on multiple separation
applications.
Machine details"Banana" screens o type BHG are double counterweight
screening machines the same as the type HG described
on page and have thereore the same technical
characteristics. We manuacture these screens as single
or double deck machines, o two to ve sections with
gradually lattening inclination. E.g. In the steep part it
might be 5 - 0, in the middle sections 15 - 5 and
0 - 15 towards the discharge. The eective screening
areas can be up to 50 m.
The quantity o inclination sections and their degree
o slope can be designed according to specic require-
ments (e.g. restrictions in height o the steel structure o
the processing plant).
Double counterweight banana screen. or dewatering in an potash mine
Technical Data
Eective width mm rom 800 up to 5500
Eective length mm rom 1900 up to 11000
Inclination degree rom 0 up to 0
Speed min-1 rom 700 up to 1000Amplitude mm rom up to 1
Angle o throw degree rom 5 up to 0We reserve the right or technical changes.
Working schema - m/s
1 - 1.5 m/s
0.5 - 0.8 m/s
Double counterweight screening machine "BHG"
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This double deck banana screen typeBHG 7/7 II or a copper mine in
Chile.
Double counterweight single deck
screen BHG or screening o iron ore
pellets and sinter at aeed rate o up
to 000 t/h and a cut point o 5.
mm
5 double counterweight single deck
screen BHG, size . x .8 m, or the
wet classiication o diamond bearing
rock.
Double counterweight screening machine "BHG"
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The elliptical motion screening machine combines
the advantages o circular and l inear motion
screens thus ensuring higher speciic throughputsand less blinding. Based on robust engineering and
proven SIEBTECHNIK components the double shat
drive with electronic control utilises the master/slave
principle.
The innitely variable angle o throw as well the vibra-
ting requency can be adjusted during operation just
by pushing a button to optimise eciency, thus saving
valuable production time.
With a pro Bus interace connection to the customersplc it is possible to program certain acceleration and el-
liptical parameters according to varying eed conditions.
It is also possible to program a cleaning run with vertical
Ellipsis an d maximum acceleration in order to eject near
mesh grains. This prevents blinding and reduces down-
time caused by otherwise necessary manual cleaning.
The design o the drive system within the machine rame
enables you to install the machine even in narrow instal-
lation situations with little available height.
Elliptical motion screens
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Primary screens
Primary screens
with punched plate or stepped grids Circular motion
Type: REKORD
Linear motion
Type: HG
with SIEBTECHNIK-double counterweight exciter
Eccenter drive
Type: VS
SIEBTECHNIK primary screens with heavy punched plateor stepped grids have or years been very successul
under the most arduous conditions.
The screens are mostly used prior to the irst crushing
stage in limestone or hard rock-quarries, ore mines and
slag preparation plants. The stepped decks achieve a
good tumbling action or the material.
Where the eed material tends to peg, we suggest
stepped grids with slots that widen towards the
discharge end. We build these machines with a width o
up to 000 mm and a length o 000 mm.
Primary screen with punched plate and double eccenter drive
Primary screen V1/0 l, with stepped grid to relieve the crusher
o a limestone quarry
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SIEBTECHNIK underwater screening machines type UHG,have proved successul or the precise classiication o
minerals. The screen deck o this type o machine has
a steep incline at the eedend which is immersed in
the watertank, and rises at a latter angle towards the
discharge end.
It emerges rom the water ater about / o the machine
length. The material is already intensively mixed with
water beore reaching the submerged deck, at which
point it becomes a slurry and will be classiied.
The intensive linear vibrations ensure the breakdown
o any agglomerates, separation o sticky particles and
a very clean cut. The oversized material is transported
upwards towards the discharge end and is dewatered
on the last third o the screening deck.
A pump at the bottom o the watertank regulates the
water level / overlow and also extracts the undersized
material. We build underwater screens in widths o
1000 - 000 mm and one uniorm length o 000 mm.
We can achieve cuts as small as 0.5 mm.
Underwater screen UHG, size 1. x m, or classiying quartz sand at 0. mm or the glass industry
Typical fow-sheet
Double counterweight screening machine "UHG"
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Sand screening machines
Sand screening machines
with circular motion
Type: REKORD
with linear motion
Type: HG
For materials with a critical moisture content or a small
clay content, such as naturally moist sand which would
blind normal screening machines, we recommend
our sand screening machines with an inclination o
5 - 0.
The circular motion machines operate on the contra-
low basis, whereas the throw is almost vertical on the
linear motion machines.
The speciic eed capacity o these sand screens is
determined mainly by the moisture, clay content, size
and shape o the material, together with the size andshape o the aperture. We ind harps with thin wires or
long slots particularly successul.
We can supply sand screens complete with chutes and
hoppers, on skids or ully mobile, with 1 or 1 1/ decks.
They are available in the ollowing eective screen
sizes:
1000 x 500 mm 1000 x 000 mm
100 x 500 mm 100 x 000 mm
100 x 000 mm 100 x 000 mm
000 x 000 mm
Special executions on request.
Mobile sand screening plant consisting o circular motion screening machine, eed hopper, belts and chassis.
Sand screening machine, type HG
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Multi deck screening machines "MDS"
Special screening machines
High capacity in a small area. For pre-classiying,
thickening, and classiying diicult materials we
recommend our multi deck screening machines with up
to 5 decks, or applications with a relatively high content
o marginal particles and acritical moisture.
The steep angle, particularly on the lower decks, provides
thin layer screening, allowing high throughputs and
accurate cuts even with smaller apertures.
We supply screening machines in light executions or
classiication, iltration, control screening or or smaller
eed rates:
as single and multiple deck screens o normal steel, stainless steel or aluminium
stationary, on skids or mobile
with or without dust enclosures
gastight or inert gas purging
Screening machines or industrial and domestic waste,
reuse compost and other areas o reuse removal and
recycling, have been part o our delivery programme or
many years. Even or apparently impossible screening
problems you should contact us. A well trained team
o engineers and more than 80 years experience are at
your disposal.
Multi deck screen, type MDS, in a rock quarry
Circular motion screen REKORD or screening o cattle ood
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Screening machine or all screenable materials
Circular motion screens REKORD
size 1. x ,5 m, or dewatering o insulation material
Linear motion screen type HR-C
or screening o drilling mud
Circular motion screens REKORD
size 1. x .0 m or screening wet sand
Double counterweight screen HG
or de-watering
3 circular motion screens REKORD
or classiying sand and gravel
in a preparation plant
Double counterweight screen HG
for the classication of scrap metal
in a shredder installationge
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01E/0.
007SIEBTECHNIK GmbH
Platanenallee
578 Mlheim an der Ruhr
Germany
one............+9 (0)08 / 58 01 - 00
x +9 (0)08 / 58 01 - 00
Screening MachinesProcess Equipmentcircular and elliptical motion screens
double counterweight screens
round screensjigs
Sample TakingSize Reduction MachinesLaboratory Equipmentindividual units and complete installations
or sample taking and preparation
jaw crushersroller mills
hammer and hammer impact mills
vibrating mills and ball mills
rotary shredders
test grading machines
analytical screening machines
dividers
testing drums
Centriugesscroll-screen centriuges
pusher centriuges
sliding discharge centriuges
vibratory centriuges
decanter centriuges
Delivery Program