In the end of 2007 ThyssenKrupp Fördertechnik, Business Unit Materials Handling, St. Ingbert-Rohrbach (TKF) received the order to design and deliver a new type of barge unloader for the Indonesian BONTANG COAL TERMINAL (UPGRADE STAGE 2).
The CONTINUOUS BARGE UNLOADER, in short CBU, serves the purpose to handle coal and is designed to unload barges ranging from 7.000 to 10.000 tons. The nominal unloading rate of coal will be 4.100 t/h where the CBU has to operate for a continuous period of 18 hours per day and an annual period of 330 days.
The 620 tons machine consists mainly of the portal structure with the travel gear and the travel trolley where the movable boom with the integrated double strand bucket elevator is mounted. The lifting and lowering of this group will be realized by a rope winch system on top of the travel trolley. Similar to the existing and successful running TKF ship unloaders this barge unloader is equipped with hydraulic and electric components. Repair and maintenance installations as well as lubrication and dust suppression system are integrated and of course safety and protecting equipment are installed.
Control of unloading is done from the operator’s cabin or possible from the pier by remote control. Digging depth, speed of the machine and traversing is controlled automatically to achieve the required capacity. Further, the continuous barge unloader has a semi-automatic mode to enable easy manual positioning and operating.
While reclaiming in the longitudinal direction of the barge, the bucket elevators can traverse from the one side of the barge’s hold to the other. The material reclaimed by the bucket elevator passes the portal belt conveyor and the roller table via chute system and reaches the pier belt conveyor for further transport.
To unload residual material, a slewing crane is mounted for the use of a front loader which can be lowered into the barge’s hold to feed the bucket elevator by pushing together the material from the barge's bottom and the corners.
ThyssenKrupp Fördertechnik’s previous references for continuous unloaders and their excellent track record were deciding factors in the contract being awarded to TKF. This continuous barge unloader will put in operation in spring 2010 and is another first for TKF in Indonesia, although TKF has already supplied more than 50 continuous ship unloaders, working on comparable unloading principle of continuous bucket elevator worldwide.