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Betomat vertical
concrete production plant
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Vertical concrete production
plant from Liebherr: a concept
with many advantages
Betomat tower mixers have been used successfully throughout the world for many years, both to produce premixed concrete and in precast element and concrete product manufacturing.
Their well-proven modular construction principle permits plant to be planned individually from 55 to 240 cu.
m/h set weight of concrete. Versions with two intensive-action mixers operating alternately are also available,
or with the second unit used as a pre-mixer in concrete element production. Liebherr’s full range of options
and accessories satisfies every requirement. A tandem plant can be installed to double the output again. The
complete concept is geared to the cost-effective production of high-quality concrete in a plant with low rates
of wear.
Advantages of the
Betomat concept
The vertical mixing-plant layout guarantees high
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ciple permits numerous design variations and output ratings
to be supplied. Compact and self-contained, the vertical
plant layout is environmentally acceptable and also has advantages in winter operation.
production rates and ample storage volume on
even a limited site area. The modular-element prin-
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The Betomat for pre-mixed concrete
Since it is made up of modular elements, the Betomat is not
only suitable for use as a permanently installed facility but can
often be employed temporarily on large-scale construction
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control system, everything is geared to smooth filling and throughput of the
truck mixers. The twin-track option is of particular value when delivering premixed concrete.
The Betomat in the precast and
prefabricated concrete products industry
The generous materials storage capacity, with up to 10 silo compartments, is a genuine advantage for users in this industry. The
plant itself, its control system, dragline loader and requirement
indicating points, together form a convincing overall concept.
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sites such as dams or tunnels. From the plant concept to its
The Betomat in detail
The selection and positioning of the high-quality
components has been planned to the last detail,
so that a perfect overall equipment complex results. The purpose-made options and additional
equipment satisfy the same high standards.
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Advantages of the
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The mixing plant’s vertical layout, with the aggregates located directly above the
weighing and mixing platform, guarantees high output and the necessary storage
capacity.
The tower layout occupies only a minimum of ground area. To suit customers’ needs,
numerous alternative versions are available, with one or two mixers and various
loading systems: bucket elevator, S-pattern conveyor or inclined belt.
Compact and self-contained, the vertical layout minimizes dust and noise, is therefore extremely pro-environmental and capable of working without problems in the
winter season as well.
Pre-assembled modular units make the plant extremely easy to assemble and keep
erection times to a minimum. Because of this, even temporary operation on a construction site is a viable proposition.
Betomat concept
Erecting a Betomat II-400 Betomat III-570
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Betomat II-235Betomat II-400
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The Betomat for
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It would difficult to imagine the pre-mixed concrete industry without the Betomat. Plant size
and version can be precisely matched to the customer’s needs, and an on-site building incorporated into the layout if required. Modern control systems and software make the Betomat
extremely easy to use and can include a large number of additional procedures, for example
invoicing, vehicle movement control or a concrete-laboratory program. For top-quality concrete or for maximum output, Liebherr can supply the most suitable mixing system: ring pan
mixers with or without agitators, or its double-shaft mixer.
pre-mixed concrete
Betomat III-360 Betomat III-290 Betomat II-400
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Betomat II-400
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The Betomat – a powerful plant with many options
The plant can be supplied on request with two discharge lines, for rapid truck-mixer filling. The appearance of the plant can of course also be varied too. There are various forms of loader available for
aggregate storage (belt conveyor, bucket elevator, S-pattern conveyor) and various discharge hoppers
as well. The aggregates are moved by the shortest route to their storage compartments, and the low
number of moving parts helps to guarantee reliable operation and minimum wear for a long period.
Other highly practical options from Liebherr include an automatically lowered extending nozzle (1), a
swivel chute for truck discharge (2) and a swivel collecting hopper (3) to accept water when the mixer
is being cleaned and thus minimize contamination of the plant.
Residual concrete returned to the plant and the water used to clean the truck mixers and the main
mixing plant have to be disposed of reliably and at moderate cost. Liebherr can supply two types of
concrete recycling plant (trough and screw patterns) with capacities between 4 and 22 cu. m/h. Sand
and gravel are washed out and the residual water containing cement trapped as a suspension in an
agitator tank. All these materials can then be re-used in concrete production.
Liebherr’s high-pressure mixer cleaning equipment greatly reduces the effort that would otherwise be
involved in performing this task. At the touch of a button, the mixer with its gate can be cleaned each
evening or before lengthy work breaks; this reduces the time-consuming task of manual cleaning with
a hose to an absolute minimum.
Swivel chute and extending nozzle
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Concrete recycling Before and after cleaning
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The Betomat in the precast
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element and prefabricated
product industries
Betomat mixing plant from Liebherr produces high-quality concrete for a vast number of
manufacturing applications throughout the world, for example paving stones, concrete
slabs, curbstones, drainage systems, bridge-building elements, cross-beams, house
walls, prefabricated garages or tower segments for wind-powered generators.
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The Betomat’s generous storage capacity, with up to 10 compartments, is a major advantage
for these industries. Since the Betomat occupies very little space, it is easy to integrate into a
precast element or concrete product factory and can be linked to existing buildings without difficulty. Aggregates can be supplied by inclined belt conveyor from points some distance away,
if necessary. As a systems supplier, Liebherr is a single source for the entire concept.
The mixing platform is of ample size to accommodate either one or two intensive-action mixers, or three in special circumstances. A second mixer is often invaluable for pre-mixing when
producing concrete products. Liebherr supplies intensive-action mixers that are ideal for the
most varied tasks. Even the smallest 0.5 cu. m RIM-M ring pan mixer is available with an agitator
system for excellent mixing results.
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Fully integrated into concrete product manufacturing
Liebherr is the single-source supplier for the entire concept, from aggregate loading to delivery of the freshly mixed concrete to the production areas. Many years of experience in this
field are a guarantee of success in the production of precast and prefabricated concrete
articles.
The requirement indicating point
The grade and quantity of concrete needed can
be called up with the aid of the precisely
where delivery is to take place.
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“Just-in-time” concrete production
When all systems are perfectly coordinated, reliable production and delivery
of concrete precisely where and when it is needed presents no problems:
• Loading aggregates
• Calling for deliveries
• Concrete mixing
• Movement of the concrete to the production area
• Cleaning the mixing plant
• Cleaning the skip loader tracks
• Transferring residual concrete and cleaning water to the recycling unit
• Recycling residual concrete
• Re-use of the raw materials thus obtained
Skip loader track
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Production control Recycling unit
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The Betomat
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The ideal mixer for every task
For more than 50 years, Liebherr has developed and built its own mixer systems. In the company’s technical mixing-plant
laboratory, these systems are tested with the most varied mix constituents, developed and optimized.
Based on the successful Type R ring pan mixer, there are now two further versions with additional agitators for higherquality grades of concrete. The Type RIM is supplied with either one or two mechanically-driven agitators (RIM-M / RIM-D).
The Type RIH has either one or two hydraulically driven actuators, which have the advantage that the speed of agitator
rotation can be continuously varied (RIH-M / RIH-D). Ring pan
mixers are available with capacities from 0.5 to 3.0 cu. m.
Liebherr’s double-shaft mixers are of extremely
robust construction and intended for high output
rates. The Type DW is available in sizes from
2.25 to 4.5 cubic meters (nominal
set-concrete volume). All Liebherr mixer
systems are exceptionally easy to service.
in detail
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Litronic MPS microprocessor control
Litronic MPS is an open-system concept using industrial standards on a broad basis.
This ensures that new hard- and software developments can be incorporated into the
system without difficulty. Every step in the process is clearly visualized on the computer
screen. Interfaces are provided for links to existing data processing systems. Extensive
additional software packages are available and can be retrofitted later if necessary.
Litronic FMS moisture measurement
For precise determination of the moisture content of aggregates, Liebherr uses intelligent, capacitive-action sensors developed in-house.
Litronic TMS temperature measurement
Liebherr supplies its Litronic TMS system for contactless measurement of the temperature of the material in the mixer.
Litronic TMS temperature measurement Sensor installed
Litronic FMS moisture sensors
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Water weigherCement weigherRotary distributor belt
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The machinery platform
Ample space is provided on the machinery platform for access to the mixer
inlets and other components, so that cleaning is an easy matter.
Rotary distributor
The individual aggregate silo compartments are filled from a rotary distributor or, on larger installations, a rotary distributor belt.
Weighing systems
The cement, water, aggregate and admixture weighers all supply precise
measured values to the control system. All weigher systems are suitable for
calibration. Rapid, accurate batching is essential if mix formulae are to be
complied with despite high output rates.
Up to six cement-screw inlets can be accommodated at a single cement
weigher. The aggregate weigher has protective rubber mats to prevent wear.
Other forms of material delivery
Additional batching devices can be used to supply steel, synthetic fibers,
micro-silicate slurry (compacted or loose) or dye to the mix.
Aggregate weigher Admixture weigher
Admixture tanks
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Cement filter systemsPositive dust extraction from mixerVersion with two truck discharge tracks
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Dewatering system
As an option, a dewatering system can be installed under the batching gates. Water from the aggregates is trapped and conducted away
downwards by a channel system.
Two discharge tracks
The version with two discharge tracks is available with either one or
two intensive-action mixers. It permits one truck mixer to be filled and
another driven into position ready for filling. Two gates are always provided on each intensive-action mixer, so that both mixers can supply
either truck filling point.
Environmental protection
To avoid contamination of the air in the vicinity of the mixing plant with
dust, Betomat plants have positive mixer dust extraction and the cement silos are fitted with air outlet filters.
Winter operation
Thanks to a precisely coordinated heating system for the plant and the
additive storage facilities, together with heat-retaining paneling, operation in the winter season can proceed without difficulties.
Heating Weighing cell
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A well-planned program
for every purpose:
Components of the
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Liebherr tower mixer
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5
6
18
7
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2
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16
10
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1.) Hopper with cover grid for
loading the silos
2.) Bucket elevator, belt conveyor
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or S-pattern conveyor
3.) Rotary distributor for aggregate
storage in silo compartments
4.) Multi-compartment aggregate
silo
5.) Level indicator for monitoring
contents of aggregate silo
6.) Aggregate batching devices
7.) Additive multi-component
aggregate weigher
8.) Cement silos with pneumatic
filling system
9.) Cement loosener
10.) Cement screws
11.) Cement weigher
12.) Ring pan mixer
1
7
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Version with 2 ring pan
mixers and twin weigher
Version with 2 ring pan mixers
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Version with double-shaft mixer
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13.) Discharge nozzle with rubber
extension tube for filling truck
mixers or open trucks
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14.) Control room
15.) Air compressor for batching
gates and cement loosener
16.) Continuous level indicator for
monitoring cement silo content
17.) Exhaust air filters for
cement silos
18.) Water weigher
19.) Access stairs to aggregate
distribution platform
20.) Double-shaft mixer
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Modular-element system with
leading-edge technology
How to locate the correct size for your tower mixer
Type Effective
Betomat II
Betomat III
aggregate
volume
(m³)
180
235
290
345
400
455
220
290
360
430
500
570
Height*
H
m
21,0
22,5
24,0
25,5
27,0
28,5
21,0
22,5
24,0
25,5
27,0
28,5
* = Heights are quoted as a guide only
Max.
number of
silo compart-
ments
10
10
10
10
10
10
10
10
10
10
10
10
Type Effective
Betomat IV
Betomat V
aggregate
volume
(m³)
260
345
430
515
600
335
470
605
740
875
1010
Height*
H
m
21,0
23,0
24,0
26,0
27,0
21,0
22,5
24,0
25,5
27,0
28,5
Max.
number of
silo compart-
ments
10
10
10
10
10
12
12
12
12
12
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Max. theoretical output and
equipment specification
Betomat II Betomat III Betomat IV Betomat V
1 mixer 2 mixers 1 mixer 2 mixers 1 mixer 2 mixers 1 mixer 2 mixers
RIM 1,0 55 / 69 110 / 138 55 / 69 110 / 138 55 / 69 110 / 138 55 / 69 110 / 138
RI M 1,5 75 / 94 150 / 188 75 / 94 150 / 188 75 / 94 150 / 188 75 / 94 150 / 188
RIM 2,0 90 / 112 180 / 224 90 / 112 180 / 224 90 / 112 180 / 224 90 / 112 180 / 224
RIM 2,25 100 / 125 200 / 250 100 / 125 200 / 250 100 / 125 200 / 250 100 / 125 200 / 250
RIM 3,0 120 / 150 — 120 / 150 — 120 / 150 240 / 300 120 / 150 —
DW 2,25 100 / 125 — 100 / 125 — 100 / 125
DW 3,0 120 / 150 — 120 / 150 — 120 / 150
DW 3,5
DW 3,5
DW 4,0
DW 4,0
DW 4,5
DW 4,5
The first value is the set-concrete output (m3/h) with a mixing time of 30 s
The second value is the output in freshly-mixed concrete (m
1) with truck-mixer discharge
2) with open-truck discharge
1)
140 / 175 — 140 / 175 — 140 / 175
2)
170 / 215 — 170 / 215 — 170 / 215
1)
150 / 190 — 150 / 190 — 150 / 190
2)
190 / 240 — 190 / 240 — 190 / 240
1)
160 / 200 — 160 / 200 — 160 / 200
2)
210 / 260 — 210 / 260 — 210 / 260
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/h) with a mixing time of 30 s and compaction v = 1.25
on request
on request
on request
on request
on request
on request
on request
on request
100 / 125 —
120 / 150 —
140 / 175 —
170 / 215 —
150 / 190 —
190 / 240 —
160 / 200 —
210 / 260 —
ø 6,8 m ø 7,8 m ø 8,8 m ø 10,5 m
Betomat II Betomat III Betomat IV Betomat V
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Other examples of vertical
concrete production plants:
Printed i n Germany by Schirmer BK LMT-8203 049 05-01.13.enGB Subject to modification.
Liebherr-Mischtechnik GmbH
Postfach 145, D-88423 Bad Schussenried
+49 (0)7583 949-0, Fax: +49 (0)7583 949-3 99
www.liebherr.com, E-Mail: info.lmt@liebherr.com
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