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| WORLD FERTILIZER |
NOVEMBER 2016
especially true for the import and export of dry bulk cargo,
such as coal, grain, iron ore and fertilizer, etc., because of
the risk of spillage and dust production. Problems can occur
during loading and discharging operations, as well as when
material is transferred to storage at the port. To achieve a
reduction of emissions, the first step could be the use of
environmentally-friendly bulk handling equipment. As a
result of its R&D into green technology, Bedeschi Spa, a
global supplier of crushing and handling machines for
the cement and mining industries, steel factories, coal
and others industrial processes, has been able to design
and produce machines that incorporate sophisticated
dust control measures and are able to reach the highest
environmental standards.
Focusing on fertilizer
Yara International is a key player in the fertilizer
manufacturing industry. Bedeschi first began working
with Yara in 2004. The company was contracted to
supply a shiploader for Ravenna port in Italy.
Following this successful cooperation, Bedeschi
provided additional shiploading technology to the
Brunsbuttel and Le Havre ports. The following provides
details on these recent projects.
Case study: Germany
In May 2016, Bedeschi was awarded a shiploader
contract for Yara Germany, located in Brunsbuttel. The
turnkey project included supplying engineering,
construction, erection, commissioning and start-up of
a shiploader that would replace the existing one.
The loading process
The installed shiploader moves along the quay on a
portal travelling device and receives the bulk material
(urea) from the tripper car on the fixed quay gallery
belt conveyor. The portal travelling device has two
groups of twin wheels located on its corners and runs
on rails. The upper part of the portal is equipped with
one transfer chain conveyor that receives the material
from the tripper car installed on the gallery quay
conveyor and delivers it to the main chain conveyor
installed on the boom of the shiploader. The portal
screw conveyor is also equipped with a cartridge
filter suitable both for the ducting of a transition
point between the tripper and the portal chain
conveyor and to create a vacuum into the same screw
conveyor. The slewing element of the shiploader
consists of a rotating mast frame superstructure, a
supporting luffing boom equipped with the main
chain conveyor and a telescopic and tilting loading
chute.
Alternatively, the telescopic and tilting chute can
be equipped with a launching belt or with a loading
spoon. These two accessories allow an easy and
optimal loading efficiency of both large vessels (up to
20 000 DWT) and barges.
On the top part of the slewable boom, another
filter is installed, which is dedicated to the ducting of
the telescopic loading chute, through two connections,
functioning as an extraction system to create a vacuum
into the holds of an ocean vessel.
The telescopic chute is operated by a cable winch for
the vertical movement. The internal part of the chute is
equipped with dedicated lined guide cones. The
environmentally-friendly aim of the machine is achieved
due to the completely closed chain conveyor frames,
which enable a reduction in noise emissions.
Figure 1.
Yara Brunsbuttel shiploader.
Figure 3.
Shiploader slewing, luffing and travelling.
Figure 2.
3D design of a shiploader slewing, luffing and travelling.
