IBAU HAMBURG

A MEMBER OF THE HAVER® GROUP

Information

Self-DischargingCement Carrier

Cement Carriers

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Advanced IBAUtechnologyfor self-dischargingCement Carriers

The trade of cement andsimilar products resultsin new ship capacitiesand more and more con-versions of conventionalbulk carriers intospecialized cement self-unloaders. Selfunloadingcement carriers need noshore based ship unload-ing equipment and havea totally enclosed cargohandling system, usinga fluidizing system in thecargo holds for cementunloading. Up to now,the world fleet comprisesabout 300 units between1,000 dwt and 60,000 dwtfor seaborne cementtransportation. Additio-nally, about 200 unitsexist in the <1,000 dwtrange for lake and rivertransport.

In line with the marketdemand, I BAU HAM-

BURG has developedconcepts for new ships aswell as the conversion ofbulk carriers into cementself-unloaders, which canbe adapted for ship sizesup to 60,000 dwt.

Especially the cementcarriers in the upperrange require advancedsystems, which are fullyautomated allowing toachieve high loading andunloading rates.

Self-unloading Cement Carrier

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Information

Fluidizingcargo holds

The sloped bottoms ofthe cargo holds arecovered with fluidizingpanels. Rotary pistonblowers supply the com-pressed air oil-free tofluidize the cementabove the panels so thatthe cement can flow tothe lowest point, wherethe discharge gate isinstalled. The dischargerate is adjusted by anI BAU FLOW CONTROL

GATE.

The most advancedmidshiptunnel concept –fromIBAU HAMBURG

The midship tunnel sys-tem is dividing the cargoholds into a portside andstarboard compartment.The I BAU pumps androtary piston blowersare placed in the midshiptunnel. The midshiptunnel eliminates anadditional bottom-to-deck hold for thedischarge equipment.

Cement Carriers

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IBAU HAMBURG

new self-dischargingtechnology

Advanced self-unloadersin the 1,000 dwt to60,000 dwt range areequipped with fluidisationsystems in the cargo holds.

The systems can beinstalled in new ships andconversions within threemonths. They can beadapted to the differentship sizes and differenttypes of cement, fly ashor similar materials.

Unique in the IBAU con-cept is the space-savingmidship tunnel design thatintegrates the dischargeequipment and divides theholds into a portside andstarboard compartment.

The midship tunneleliminates an additionalbottom-to-deck hold forthe discharge equipment.

The fluidisation systemcomprises inclined aera-tion panels, which coverthe complete hold bottom.Cement flows to thelowest points in the holds,where IBAU flow controlgates are installed, whichallow an adjustableand computerized flow.

For transporting thecement from the holds tothe shore terminal,specially designed screwpumps are used, whichhave a very low feedpoint and allow a lateralfeed from the left andright hand side. Eachpump transports up to350 t/h cement. Convey-ing distances of more than600 m can be achieved.

When different cementtypes such as white andgrey cement have to betransported one afteranother with the samecement tanker a 100 %cement reclaim from thecargo holds is required.The innovative IBAUvacuum cleaner assiststhe reclaiming process, tomake a 100 % cementreclaiming rate possible.

The cargo holds areequipped with dockingstations for the mechani-cal cleaner, which directsthe remaining cementbetween aeration panelsinto the bin of an IBAUpump. Particle separationis effected in the pumpfilter and no additionalcement transportationequipment is needed.

How it works:Cement Carrierloading / unloading

The self-unloader isloaded and unloaded inthe most flexible andsimple way by means ofIBAU pumps.

To achieve unloadingrates of up to 1,200 t/h,four IBAU pumps can beused in parallel. Thepumps are supplied withoil-free conveying air byscrew compressors, whichare located in deck hous-es, together with thefiltering equipment.

For direct loading withhigh capacities againIBAU screw pumps areused, which pneumatical-ly convey the cementthrough one or morepipelines directly into the

cargo holds. Flexiblehoses for the connectionof the shore and shippipes are carried by anon-board crane. Loadinglines on deck are quippedwith motor actuatedIBAU two-way valvesfor directing the cementinto the selected holds.

The required compressedair is generated by thecompressors on board.For cement distributionon deck from a centralreceiving bin either fluid-slides or horizontal screwscan be used. IBAU fluid-slides are used for capaci-ties up to 1,200 t/h, whileIBAU screw conveyorsare recommended forcapacities up to 500 t/h.Such systems are verycommon if a mechanicalship loader is used.

For highest reliability,cement loading andreclaiming for the self-unloader can be com-pletely automated andcomputer controlled.During loading, cement isautomatically directedinto the holds, while theship is balanced.

Unloading rates can bepre-selected and the oper-ator gets informationabout any hold and dis-charge equipment at anytime. I BAU HAMBURG

can fit the computersystems with latest state-of-the-art technology toensure highest recoveryfrom the cargo holds withthe shortest berthing timein the port.

The described loading /unloading technologyoptimally assistscomputer automation.

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Information

I BAU’s new generation of Cement Carrier technology M.V. KEDAH at Westport

Cement Carriers

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M.V. GOLIATH

Information

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reaching the Sydney Depot

Cement Carriers

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M.V. GOLIATH at Devonport Harbour supply depot

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Information

The drawing shows the general layout of the cement tanker M.V. GOLIATH (15,000 dwt)

1 Crane for carrying the flexible loading and unloading lines

2 Loading lines on deck

3 Deck houses with 4 filters and exhaust fans

4 Deck house with 8 compressors

5 Four cargo holds divided by midship tunnel into starboard and port side compartments

6 Four I BAU pumps and 8 rotary blowers placed in the midship tunnel

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UPPER DECK

HOLD PLAN

Cement Carriers

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M.V. GOLIATH board crane lifting the loading pipes

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M.V. GOLIATH loading procedure for dustfree loading independent from any weather conditions

Cement Carriers

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M.V. KORALIA reaching a supply depot

M.V. KORALIA cement carrier

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Information

The drawing shows the general layout of the cement tanker M.V. KORALIA (8,500 dwt)

1 Crane for carrying the flexible loading and unloading lines

2 Loading lines on deck

3 Deck houses with filters and exhaust fans

4 Deck houses with compressors

5 Four cargo holds divided by a midship tunnel into starboard and port side compartments

6 Four IBAU pumps and rotary piston blowers placed in the midship tunnel

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UPPER DECK

HOLD PLAN

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M.V. KEDAH I

Cement supplyon the open sea

M.V. KEDAH II

in the dry dock

M.V. KEDAH III

during one ofits supply voyages

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Information

The drawing shows the general layout of the cement tanker M.V. KEDAH I, II & III (16,000 dwt)

1 Loading fluidslides

2 Deck houses with filters and exhaust fans

3 Deck houses with compressors

4 Four cargo holds divided by a midship tunnel into starboard and port side compartments

5 Four IBAU pumps and rotary piston blowers placed in the midship tunnel

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2

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UPPER DECK

HOLD PLAN

Cement Carriers

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M.V. CEMSEA at the Rostock harbour terminal

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Information

The drawing shows the general layout of the cement tanker M.V. CEMSEA (4,100 dwt)

1 Loading points on deck

2 Deck house with compressors

3 Cargo holds divided by a midship tunnel into starboard and port side compartments

4 Horizontal screw conveyer placed in the midship tunnel

5 IBAU pump placed in the midship tunnel

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5

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UPPER DECK

HOLD PLAN

Cement Carriers

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M.V. CEMSEA and M.V. CEMSTAR

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during supply voyage

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Preparation for discharge

M.V. CEMSEA in the Kiel Canal

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Information

M.V. CEMSEA cement supply by HOLCIM

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Feeding of I BAU pump

Why IBAU pumps work better:

The I BAU pump is the only directunloading solution that does not needany intermediate transport and the spacerequirement in the ship hold is verylow. Vacuum systems as well as screwsystems mainly are combined with pres-sure vessel conveying for ship to shoretransport. The capacity range of I BAUpumps installed in parallel is as high aswith the most advanced screw conveyorsystems. The conveying distance can beup to 600 m, which covers the knownterminal requirements.

The specific power consumption that isrequired for an I BAU pump is not hig-her than for a combined vacuum / pres-sure vessel system and only slightlyabove screw systems for medium andlong distance transports. Another strongpoint of the I BAU pump is the adapta-bility to latest automation requirements.When screw conveying systems arecombined with I BAU pumps some spe-cial advantages are received compared tothe vacuum / pressure vessel solution,such as lower energy requirements andthe long conveying distance.

Conclusion

The concepts of I BAU HAMBURG aredriven by the market needs. Conver-sions have to become operational withinthree months. Advanced systems haveto fit to the terminal facilities andrequire high loading / unloading rates upto 1,200 t/h. These can very effectivelybe met with the I BAU pump system,which fulfills the most stringent systemrequirements. The direct loading / unloa-ding mode requires no intermediatetransport and transfer points as it isnecessary with vacuum / pressure vesselsystems. Another major advantage isthe possible long conveying distanceand the possible complete automation.The system can also be adapted tocement tankers, which alternativelytransport different cement types. I BAUHAMBURG has an intensive projectexperience. For smaller ship sizes suchas river barges also mechanical screwconveyors are economical.

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Information

Midship tunnel with screw conveyor Cargo hold discharge

The I BAU pump in the midshipCargo hold with aeration panels

Cement Carriers

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The cement barge reaching the unloading station

The cement barge of LAFARGE CEMENT during the voyage on the river Seine

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Information

The drawing shows the general layout ot the cement barge (2,200 dwt)

1 Feeding screw conveyor

2 Two cargo holds

3 Discharge screw conveyor

4 Flexible screw conveyor for unloading

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UPPER DECK

HOLD PLAN

Cement Carriers

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Loading station for

Information

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LAFARGE CEMENT at Le Havre port

Cement Carriers

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Cement Carrier M.V. GLEN VINE

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Information

The drawing shows the general layout of the cement tanker M.V. GLEN VINE (60,000 dwt)

1 Crane for carrying the flexible loading and unloading lines

2 Seven cargo holds divided by midship tunnel into starboard and port side compartments

3 Seven IBAU pumps placed in the midship tunnel

4 Deck house with compressors

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UPPER DECK

HOLD PLAN

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I BAU HAMBURG · Rödingsmarkt 35 · D-20459 Hamburg · PHONE +49 (0) 40 36 13 090

FAX +49 (0) 40 36 39 83 · Email: info@ibauhamburg.de · Internet: www.ibauhamburg.de

IBAU HAMBURG –THE STATE OF THEART

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Raw meal blending silo,Dyckerhoff Zement / Germany

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M.V. CEMSEA and M.V. CEMSTAR selfdischargingcement carriers for Brise Schifffahrtsges. / Germany

05/08/CementCarrier