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Uzwil, Switzerland -- In expanding the loading and unloading installation of the Silo P. Kruse
company in the port of Hamburg, account also had to be taken of the protection of historic monuments. A customized solution was needed.
The multistory red brick building in the port of Hamburg – on the left bank of the Elbe river just ahead of the RetheHub bridge – is conspicuous. The dominant port terminal had been constructed in 1940 to stock grain provisions and has been gradually expanded ever since. Today, the installation serves Silo P.Kruse BetriebsGmbH & Co.KG as a materials handling and storage site for cereal grains, animal feeds, and oilseeds in its import and export business. Material is loaded and unloaded into river barges, oceangoing vessels up to Panamax size, and road and rail vehicles. The terminal holds about 80,000 metric tons of grain.
230 tons of steel
The latest expansion of the bulk storage and handling facility was implemented by the specialists from the Buhler Grain Handling business unit. It included the construction of a new stationary pneumatic unloader for river barges, a stationary loading boom, the expansion of a mobile pneumatic unloader with a ship loader and a chain conveyor feed system. The total contract was worth about four million euros without the civil engineering works. The first part of the installation was commissioned in September 2004, and the stationary loaders were supplied in the summer of 2005. The entire facility has a total loading capacity of almost 900 metric tons of bulk material per hour.
One special challenge was the stipulation that the old substance of the red brick elevator building be preserved. As a result, the structure was reinforced inside with about 230 tons of steel sections to allow installation of the two stationary loaders and unloaders.
River barges and oceangoing vessels
The four subprojects of the latest expansion had to be individually customized by the Buhler specialists. The stationary pneumatic ship unloader has a capacity of 250 metric tons per hour. It is intended mainly for the unloading of small ships with a length of up to 90 meters in the newly built inland navigation port. But with its over 36 meter long horizontal boom and its 25 meter long vertical telescopic pipe, it is also capable of unloading the fore holds of oceangoing ships.
The new stationary loading boom has a throughput capacity of 250 metric tons per hour and consists of a sophisticated system of chain conveyors which move the bulk materials from the terminal to the boom tip. From there, the material drops through the vertical telescopic pipe to the patented loading head with a dust suppressor, which ensures extremely lowdust ship unloading.
Combisystem
As a third subproject, a mechanical loader was added to an existing mobile pneumatic ship unloader that Buhler had supplied in 1972. The new loader section with a throughput capacity of 600 metric tons per hour is supported on the waterfront side by a third track. On the inland side, the loader is attached to and supported by the existing unloader construction.
The bulk material is fed from the terminal by two new chain conveyors attached in line to the terminal elevator wall. The mobile combiloader can dock onto ten freely selectable outlet hoppers of the chain conveyor gallery and thereby change its position on the pier. The material is moved by another conveyor to the boom chain conveyor, from where it drops as in the case of the stationary loader through the vertical telescopic pipe into the dust suppressor loading head and then flows into the ship’s holds.
Web site: http://www.buhlergroup.com/
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