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W E C O N V E Y Q U A L I T Y
SILO DISCHARGE CENTREX®
W E C O N V E Y
2
CONTENTS
3 CENTREX® with internal
drive type CTX-IV
4 CENTREX® with external
drive and rotating inner
cone type CTX-AV
5 CENTREX® with external
drive and stationary inner
cone type CTX-AFD
6 Examples for CENTREX®
applications with new
installation
8 Examples for CENTREX®
applications with existing
installations
9 Field assembly of
CENTREX® units
10 Technical data
11 Bulk material testing inour laboratory
12 Components
14 Conversion &Refurbishments
15 After-Sales Service
CENTREX®
Trouble-free silo discharge for sticky and cohesive materials with poor flow properties with First-in and First-out principle.
The logarithmically shaped discharge arm moves the bulkmaterial towards the central outlet underneath the inner cone, where it is discharged into a chute. The discharge arm acts the material from underneath the material column and reaches beyond the outlines of the silo wall, which avoids accumulations and prevents the bulk materialfrom sticking to the silo wall. Consequently, the material column is brought to descend in a regular and uniform manner, which maintains the homogeneity of the stored material, thus avoiding segregation and bridging.
The logarithmic design of the discharge arm prevents the bulk material from being compacted when moved to the central outlet. In addition it minimizes wear and requires less drive power.
On account of its very compact and rigid design, theCENTREX® is also an ideal solution for installation into or underneath existing bins or silos.
Three basic alternatives are available with the CENTREX®
system. The choice depends either on the technical features of the bulk material or on the type of application within a given process.
CENTREX® with internal drive type CTX-IVCENTREX® with external drive and stationary
inner cone type CTX-AVCENTREX® with external drive and rotating
inner cone type CTX-AFD
Material examples which can be discharged:
• FGD-Gypsum• Gypsum• Coal• Limestone• Clay• Marl• Wet ash
3
Q U A L I T Y
CENTREX® WITH INTERNAL DRIVETYPE CTX-IV
View through the hollow girder onto the drive unit
A CENTREX® with internal drive can be of shock-proof or entirely pressure and water-proof design. It is therefore particularly suitable for :
• Feeding of mills, dryers and kilns• Sludge discharge from sediment
retention basins• Discharge from silos operating with inert gas• Discharge from silos with poisonous materials• Recommended silo diameter of 2,5 - 8 m
Radially arranged support arms connect the innercone with the silo wall. With their roof-shaped uppersection serving as deflector plate, these support armsare designed to prevent the stored material from sticking to the arms.
At least one of these arms is enlarged to allow accessto the inside of the cone. The internal drive unit isaccessible and can be removed with the rope winchalso installed inside the cone.
This alternative with its compact design is a most economic solution.
Advantages internal drive:
• Minimum number of componentsrequired
• Almost maintenance free operation• Low construction height• Maintenance access through
support arm
W E C O N V E Y
4
Two separate lubrication lines: one to lubricate the gear of the slewing ring,
With this alternative, the inner cone, dischargearm and rotary chute form one unit designed for easy discharge of even extremely difficultbulk materials. The rotating movement of the cone activates the stored material and significantly improves the mass flow of the bulk material. The entire rotating unit is mounted onto a slewing ring with sphericalbearing and gear ring power transmission.
Due to the additional activation of the stored material caused by the rotation of the inner cone as part of the rotating unit, bridging is effectively prevented.
CENTREX®
WITH EXTERNAL DRIVE ANDSTATIONARY INNER CONETYPE CTX-AV
Advantages:
• Easy maintenance of drive unit and slewing ring
• Use also possible for silos done to 1 m diameter
• With rotating cone bridges will be destroyed
• High forques transferable with 2 or more drives
5
Q U A L I T Y
The drive unit of this CENTREX® design is fitted to the discharge bottom for easyaccess. This design also features radiallyarranged support plates connecting the inner cone with the silo wall.
This alternative with external drive and stationary inner cone offers ideal conditions for applications involving a high torque and requiring easy maintenance.
CENTREX®
WITH EXTERNAL DRIVE AND ROTATING INNER CONETYPE CTX-AFD
one to lubricate the bearings of the slewing ring CENTREX® type CTX-AFD
W E C O N V E Y
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CENTREX® with internal drive. Discharge from a steel plate silo with truck loading
Discharge of a slag and fly-ash sludge in a coal-fired power plant. CENTREX® with internal drive
CENTREX® with two external
EXAMPLES FOR CENTREX® APPLICATIONS WITH NEW INSTALLATIONS
7
Q U A L I T Y
drives for discharge of FGD-gypsum loading onto a Weigh Feeder
CENTREX® with stationary cone discharging FGD-gypsum from a dumping hopper
Silo storing natural gypsum with CENTREX®
discharge in a plaster board plant
Natural gypsum silo with discharge for continuousfeeding of a high temperature kiln in a plaster
board plant
To prevent the humid and cohesive FGD-gypsumfrom sticking to the cone and silo wall, both are
covered with a synthetic lining
W E C O N V E Y
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Retrofit of a steel silo for coal and petcoke storage
Coal discharge from a cylindrical silo with a pressure-proof CENTREX® feeding a chain conveyor.
Modification of a concrete silo storing a humid mixture of limestone and clay, fitted with three discharge units.
EXAMPLES FOR CENTREX® APPLICATIONS WITH EXISTING INSTALLATIONS
9
Q U A L I T Y
FIELD ASSEMBLY OF CENTREX® UNITS
Lifting of the workshop-mounted main CENTREX® components on site and assembly of CENTREX® bottom and silo
Even with a filled silo the drive unit of the discharge armmay be removed through the discharge opening
W E C O N V E Y
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F
A
E dD
H
D F E d H A Q [m3/h]
Discharge Outer ø Penetra- Inner Slot Outlet Theoretical discharge capacity arm ø tion depth cone ø height ø Circular speed at[mm] [mm] [mm] [mm] [mm] [mm] discharge arm tip
(adjustable) 1 m/s 0,5 m/s 0,2 m/s1000 1340 250 500 100 220 70 35 141500 1840 375 750 150 340 100 50 202000 2380 500 1000 200 450 140 70 282500 2880 625 1250 250 560 180 90 363000 3380 750 1500 300 670 220 110 443500 3880 875 1750 350 780 290 145 584000 4380 1000 2000 400 900 360 180 725000 5420 1000 3000 500 1100 520 260 1046000 6420 1000 4000 600 1350 730 365 1467000 7460 1000 5000 700 1550 910 455 1828000 8460 1000 6000 800 1770 1000 500 200
F
A
E dD
H
TECHNICAL DATA
Centrex® with external driveCentrex® with internal drive
CENTREX® with internal drive: minimum discharge arm diameter 2500 mm.
CENTREX® with external drive and rotating cone: max. discharge arm diameter: 4000 mm.
11
Q U A L I T Y
Jennicke shear cell Bulk material tests
BULK MATERIALTESTING IN OUR LABORATORY
To determine the physical and mechanical properties and behaviour of specific bulk materials, our laboratory incorporates a large variety of testing equipment. Various test methods allow to determine the correct application of our products, e.g. shear testing.
Ratholing Core flow Bridging Mass flow
W E C O N V E Y
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5 RDM-R's 10,000/4,500, during assembly in Rheinberg's workshop
Ready assembled CTX-IV 5000, view into the support/maintenance arm, onto the
planeatey drive unit
CENTREX® discharge arm for internal drive
13
Q U A L I T Y
COMPONENTS
Drive arrangement of CTX-AV, external drive, view onto slewing ring and pinion with automatic lubrication nozzles
Chassis of RDM-R, view onto hydraulic aggregate and cylinders for rotation
W E C O N V E Y
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• Upgrading of existing plant components• Targeting increased efficiency• Higher output• Improved higher availability
With our expert team of engineers planningselective modernization measures we payspecial attention to the upgrading of existingplant components, targeting increased efficiency, higher output rates and improvedavailability.
Upgrading of your materials handlingand storage equipment to state-of-the-arttechnology is achieved through a tailor-maderefurbishment process under optimum utilization of time and budget.
Most of the existing components are re-usedin the refurbishment process to save costs.For each project, a system drawing showinghow the new components fit into the existinggeometry is generated after verification of
Retrofitting a heavy Apron Feeder
Conversion of a Bucket Elevator
the feasibility and analysis of the bulk material’sproperties and the technical specifications ofthe existing plant.
Engineered conversions and refurbishments forincreased efficiency and output are performed onAUMUND equipment same as well as on equipment of other manufacturers.
CONVERSIONS AND REFURBISHMENTS
Q U A L I T Y
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AFTER-SALESSERVICE
• Supervises assembly and commissioning jobs
• Proactive maintenance
AUMUND continues to place highemphasis on the service to the customeralso after the successful completion of design, engineering, manufacture, delivery, assembly and commissioning.
Thus, after-sales service meansfor all companies of the AUMUND Group:
• Expert consulting in all aspects of the transport and storage technology
• Modification and conversion concepts for a capacity increase or a modernization
• Stockkeeping of spare parts• Maintenance and inspection services
A team of well-experienced field engineers supervises assembly andcommissioning jobs.
An outstanding feature of theAUMUND after-sales service is the proactive maintenance.
Within the frame of a maintenance program, we offer field inspections and maintenance seminars for all products of the AUMUND Group.
THE AUMUND GROUP
GERMANY
AUMUND-FördererbauGmbH & Co. KGSaalhoffer Str. 1747495 RheinbergTel.: +49 - 2843 - 72 0Fax: +49 - 2843 - 6 02 70e-mail: [email protected]
AUMUND Fördertechnik GmbHSaalhoffer Str. 1747495 RheinbergTel.: +49 - 2843 - 72 0Fax: +49 - 2843 - 6 02 70e-mail: [email protected]
SCHADE Lagertechnik GmbH & Co.KGDorstener Straße 36044653 HerneTel.: +49 - 2325 - 58 74 0Fax: +49 - 2325 - 58 74 74e-mail: [email protected]
THE NETHERLANDS
AUMUND Holding B.V.Spoorstraat 42-525911 KJ VenloTel.: +31 - 77 - 351 98 75Fax: +31 - 77 - 320 07 28e-mail: [email protected]
GREAT BRITAIN
B&W Mechanical Handling Ltd.Gemini House Cambridgeshire Business Park, 1 Bartholemew`s Walk,Ely, Cambridgeshire CB7 4EATel.: +44 - 1353 - 665 001Fax: +44 - 1353 - 666 734e-mail: [email protected]
FRANCE
AUMUND France S.A.R.L.53, Rue d’Hauteville . 75010 ParisTel.: +33 - 1 - 42 46 72 72Fax: +33 - 1 - 42 46 72 74e-mail: [email protected]
POLAND
AUMUND Polska Representative Officeul. Lektorska 34 G . 44-210 RybnikTel.: +48 - 32 - 426 32 11Fax: +48 - 32 - 426 32 01e-mail: [email protected]
SWITZERLAND
AUMUND AGOber Altstadt 32a, P.O. Box6301 ZugTel.: +41 - 41 - 710 10 82Fax: +41 - 41 - 710 42 02e-mail: [email protected]
PREMAS AGLoewenstr. 55, P.O. Box8023 ZürichTel. +41 - 44 - 2 10 30 05Fax +41 - 44 - 2 10 31 15e-mail: [email protected]
BRAZIL
AUMUND Ltda.Rua Haddock Lobo, 337 - 11. andar01414-001 São Paulo, SPTel.: +55 - 11 - 3059 0160Fax: +55 - 11 - 3059 0161e-mail: [email protected]
USA
AUMUND Corporation2300 Windy Ridge ParkwaySuite 150SAtlanta, GA 30339Tel.: +1 - 770 - 226 - 95 78 / 80Fax: +1 - 770 - 953 - 48 44e-mail: [email protected]
INDIA
AUMUND Engineering Private Ltd.2nd Floor, Lakshmi Neela Rite Choice Chambers . 9, Bazulla Road, T. Nagar Chennai - 600 017Tel.: +91 - 44 - 2815 60 48 / 49Fax: +91 - 44 - 2815 60 46e-mail: [email protected]
HONG KONG SAR
AUMUND Asia (H.K.) Ltd.1301 Oxford House, Taikoo Place, 979 King's Road, Quarry BayHong KongTel.: +852 - 3695 - 43 33Fax: +852 - 3695 - 43 11e-mail: [email protected]
P.R. CHINA
AUMUND (China) Room 909, East Ocean Center, No.24A, Jian Guo Men Wai Street, Chao Yang District . Beijing 100004Tel.: +86 - 10 - 65 15 58 13 / 14Fax: +86 - 10 - 65 15 58 15e-mail: [email protected]
© 2006 by AUMUND Fördertechnik GmbH – All rights reserved. Neither this document nor any part of it may be reproduced or stored,processed, duplicated or circulated e.g. by using electronic systems in any form or by any means without the prior authorization of AUMUND Fördertechnik GmbH. In case of infringements the infringing party will be obliged to compensate for all damages incurred.
www.aumund.com
AUMUND Foerdertechnik GmbH . Saalhoffer Str. 17 . 47495 Rheinberg (Germany)
Tel.: +49 (0)28 43-720 . Fax: +49(0)28 43-6 0270 . e-mail: [email protected]
W E C O N V E Y Q U A L I T Y
AUMUND Headquarters in Rheinberg, Germany
Your partner for all requirements regarding material handling and storage.
We design, engineer, manufacture, erect and service reliable equipment.
Reputation and competence proven by more than10.000 installations in over 100 countries.
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