Mactenn Systems, a Macawber Group company was awarded a contract to convey 50T/h of cement to ocean vessel using 10 Denseveyor systems.  Using low velocity Ten cement pneumatic conveying systems are operating at a ship loading site at Warrenpoint port in Northern Ireland.  The customer was extremely pleased with the systems.

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2 of the 10 Denseveyor 30/12-5 conveying systems

 Cement Conveying Systems, Ireland.


Ten Conveying vessels in pairs below 5 x 1000 ton silos with twin outlets convey at a rate of 50 tons/hour each (500t/h total) over a distance of 253 feet. The vessels are 23 cubic feet with a Macawber 12” Dome Valve® filling valve and a 5 inch convey line.

The current method of loading the ship was using multiple trucks. This method was insufficient and required too many trucks.  Mactenn was brought in to improve the ship loading time and efficiency using their dense-phase pneumatic conveying systems.  Conveying with Macawber conveying equipment meant that the trucks could load cement into the silos prior to ships arrival reducing the loading time by 50% (now about 12 hours). The system has met all of the customers’ expectations and is operating reliably at Warrenpoint port in Northern Ireland. The system has a remote connection to the Macawber office in Suffolk, England so immediate support is available with real time monitoring. It is planned to increase from 10 to 16 systems in the future.


Cement                       100% less than 50 mesh

Bulk Density                66 lb./ft³

Temperature               Ambient

Moisture Content        0.06%

Condition                     Free flowing, very abrasive


1.  Dense phase low velocity conveying & low wear

2.  Short delivery

3.  Reliable operation


Transfer Capacity       500 t/h minimum                                          

Conveying Distance   253 ft.                                               

Reception Points         Single ship with 10 access points                  


1. Reduce ship loading time by 50%

2. Reduced compressed air requirements

3. Minimized wear for such a highly abrasive material (low velocity conveying)

4. Capability to remotely support the operating personnel


Ship during loading with the 10 separate lines                 




View of the control room and silos