IB05200dGBPfisterTRW

8/14/2019 IB05200dGBPfisterTRW

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www.pfister.de

Product Brochure

Rotor Weighfeeder Pfister TRW

Highly accurate and reliable gravimetric feeding of

coarse, abrasive and hot materials

Whether dosing materials to the coal mill, raw mill or finish mill. The robust design of FLSmidth Pfis-

ters rotor weighfeeder Pfister TRW is ideal for metering coarse bulk materials such as coarse coal,

clinker, pre-ground cement, limestone, gypsum, coal etc. with high constancy and precision. Due to the

integration of material extraction, weighing and dosing the system is easy to operate and thus ex-

tremely reliable.

Pfister TRW + ProsCon: the innovative solution for metering coarse materials.


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M i l l f e e d i n g The

application for PfisterTRW

History

FLSmidth Pfister has more than 110 years of

experience in manufacturing industrial weigh-

ing equipment and is part of the FLSmidth

group since 1998.

The Rotor Weighfeeder technology was invented

by FLSmidth Pfister in 1984 to feed pulverised

coal to the cement burning process and it is

now time tested and state of the art technol-

ogy. More than 1,700 systems are in operationworld-wide.

Out of that long experience, FLSmidth Pfister

developed in 1996 the Pfister TRW to feed

coarse materials. More then 150 units are suc-

cessfully in operation world-wide.

Further derivates are the Pfister TRW-S for solid

secondary fuels and the Pfister TRW-K to feed

crushed coal to mills in power plants. Please see

extra brochures for these Pfister TRW models.

How does the system work?

What are the benefits?

What are the dimensions?

What are the technical facts?

Is there further information?

Pages 3-4

Pages 5-7

Pages 8-9

Page 15

Page 16

Pfister weighfeeders are

Engineered

Designed

Assembled

Tested

in AugsburgGermany

General Principle

The Pfister TRW is used for extracting coarse

bulk material out of a storage silo and feed it

with high accuracy to the grinding mill. Be-

cause of its robust and all-metal design, it is

especially beneficial if used for dosing of hot

and abrasive materials such as clinker.

What applications are there? Pages 11-14

Historic Pfister scale.

L u d w i g Pf i s t e r ,founder of the company

in 1894.

Content


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The Function Principle

The Pfister TRW utilises the operation principle

of a gravimetric drag chain conveyor which

transports the material in a circle and has re-

volving trough walls. The bulk material is di-

rectly extracted from the storage silo and trans-

ported from the inlet (2) towards the outlet (3) bythe rotor wheel (1). The rotor is driven by a

variable speed drive (4). The rotor housing (5)

covers the rotor and provides a completely

closed and dust tight system. It is suspended

on an eccentric weighing axis (A-A), which is

through the middle of inlet and outlet. The third

point is suspended with a tow-bar at a load cell

(6) which weighs the gravimetric bulk material

content of the rotor.

How does the system work?

1

4

5

2

3

6

7

A

A

8

P f i s t e r TRW

A-A eccentric weighing axis. 1: rotor wheel, 2: bulk material inlet, 3: outlet,4: variable speed drive, 5: rotor housing, 6: load cell, 7: weighing bearing,8: suspension frame.

The high material layer results in a high meas-

uring load, which means that any effects of

external disturbance variables can be virtually

ignored. At the outlet, the bulk material simply

falls out of the feeder by gravity.

The gravimetric measuring value provides

information on the bulk material mass in the

rotor weighfeeder before the material leaves

the feeder. The loading of the rotor with bulk

material is then stored in the weighing elec-

tronics together with the associated angular

position. The speed of the rotor is controlled

inverse to the loading of the rotor at the outlet

section.

Function Principle


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Pfister Rotor Weighfeeder Controller

All data are collected in the:

Pfister CPICan Process Interface, at the feeder (3)

and transferred via CAN-Bus to the:

Pfister CSCCan System Controller, in the MCC (4)

The communication between the PfisterCSC and the plant control system can either be

via:

Serial-Interface (ModBus RTU).

Network-Interface.

(Profi-Bus DP, Device Net)

Analog/Digital-Hardwired Interface.

E le c t r o n i c C o n t r o l S y s t e m o f P f i s t e r TRW .

1: bulk material silo, 2: Pfister TRW, 3: CPI, CanProcess Interface, 4: Feeder controller CSC.

3 (Local)

4

(Motor Control Center)

ACM

T

Feeder

Controller

CSC

Can Process

Interface

CPI

CAN2

1

To achieve h i g h l y a c c u r a t e f e e d i n g , the angularspeed of rotor is controlled invers to rotor weigh-

feeder loading.

The Weighing Electronics ProsCon

The electrical controller calculates the required

speed of the motor for the time of the material

discharge. It uses the set feedrate and the

measured bulk material mass for calculating the

angular speed of the rotor (see chart). That

means that the speed of the rotor is controlled

inverse to the loading of the rotor at the outlet.

Less material in the rotor results in a higher

angular speed, more material in a lower speed.With this principle, so-called prospective control

ProsCon, the rotor weighfeeder achieves a

highly accurate compensation of variation in

rotor loading and material density. This results

in an extremely accurate feedrate with varia-

tions of less then 0.5% for short- and long-

term.

Function Principle


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What are the benefits?

Pfister TRW Reduces Wear and

Maintenance

Compact design with minimal amount of

functional parts.

No cleaning necessary.

Low wear because of slow speed of the rotor

(max. 4 8 rounds per minute).

Only wear resistant steel in contact with bulk

material, no rubber belt.

Only one moving part, the rotor inside. no

belt, no pulleys, no idlers.

The only axis is additionally purge-air sealed.

This results apparently in:

Less maintenance work

Easy and simple maintenance

Higher reliability

Higher efficiency

Designedfor long service life.

Feeding Accuracy

High accuracy because of intelligent controller

with proactive control strategy ProsCon.

High measuring loads, which are 10 times

higher compared to belt weighfeeders. This

eliminates external influences.

Insensitive to pressure differences in the proc-

ess.

This high accuracy results in exact mixing ra-

tios into the mill.

Suitability for a wide variety of

bulk-materials

Able to handle large lump sizes up to 100

mm because of the large inlet diameter and

generous dimensions.

Any foreign bodies can easily be removed

through the service openings.

Insensitive to hot and abrasive materials.

(continuous: 200C, peak: 250C)

Benefits


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Op t i o n a l o p e r a t i o n

p r o c e s s d i s p l a y , RPD .

Excellent Service & Support

Whether putting new systems in operation or

requiring maintenance for Pfister equipment

which is already in operation Pfister service

technicians are trained and experienced in

handling all Pfister equipment. Thus Pfister

may ensure that the production processes will

work smoothly from the beginning and further

on.

FLSmidth Pfister supports with

the following services:

Rotor weighfeeders are 100% assembled

and tested in the Pfister work-shop before

delivery.

World-wide FLSmidth Pfister representation

through several subsidiaries and agencies.

Training for operators and maintenance

personal at FLSmidth Pfister in Augsburg or

on customers site.

24 hours technical telephone hotline.

Short notice support with service special-

ists.

Fast support with emergency spare parts.

Modern maintenance management.

Technical assistance by Telesupport.

Saves additional Equipment

No spillage conveyor necessary.

No dedusting or aspiration necessary.

Possibility to suspend the Pfister TRW at the

silo outlet. This makes additional founda-

tions or support structures obsolete.

Smart Design

Completely closed and dust tight,

an environmental friendly system.

Simple and intuitive operation. The rotor

weighfeeder is an advanced mechatronic

system. However, it is very simple to oper-

ate. The communication to the local plant

control system is flexible and works abso-

lutely reliable.

Integration of material extraction, measur-

ing section, dosing and bulk material trans-

fer in one piece of equipment.

Benefits


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Technical Assistance by Telesupport

With an optional modem, experienced

FLSmidth Pfister technicians have remote ac-

cess to controller parameters, control logic

and sensoric interface. This makes online help

possible for trouble shooting and interpreting

events and system messages.

Modern Maintenance ManagementPfisters experience in maintenance manage-

ment has been helping cement plants to make

the cement production process more efficient

for many years.

Modern Maintenance Management reduces wear.

Online trouble shooting with optional modem.

The Benefits of MMM:Cost saving pre-planning of kiln outages.

Regular check-up support; less overall

downtimes.

Support in spare parts management.

Replacement of crucial parts at the right

time.

All maintenance measures carried out by

experienced Pfister specialists.

Reduce overall service cost.

Maintenance contracts are available.

FLSmidth PfisterAugsburg

WWW

Modem on site

PfisterCSC in MCC

Pfister CPI at feeder

Service and Support


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Rotor Weighfeeder Pfister TRW Series

Type Rotor Height (min.) Feedrate (max.) Weight

Pfister TRW 4.10 1000 mm 1320 mm 30 t/h clinker 1,550 kg suspended60 t/h pre-ground clinker 1,900 kg in frame

Pfister TRW 4.14 1400 mm 1700 mm 120 t/h clinker 2,900 kg suspended250 t/h pre-ground clinker 3,400 kg inframe

Pfister TRW 4.18 1800 mm 1900 mm 200 t/h clinker n.a. suspended400 t/h pre-ground clinker 5,500 kg inframe

Dimensions, Rotor Weighfeeder Suspended at Silo OutletHere: Type Pfister TRW 4.14, Feedrate max. 250 t/h

What are the dimensions?

T o p v i e w , Pf i s t e r TRW 4 . 1 4

f o r s u s p e n s i o n a t s i l o o u t l e t .

S id e v i e w , P fi s t e r T RW 4 . 1 4

f o r s u s p e n s i o n a t s i l o o u t l e t .

Dimensions


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T o p v i e w . Pf i s t e r TRW 4 . 1 4 i n a f r a m e .

S id e v i e w . Pf i s t e r TRW 4 . 1 4 i n a f r a m e .

Dimensions, Rotor Weighfeeder Mounted in a FrameHere: Type Pfister TRW 4.14, Feedrate max. 250 t/h

Dimensions


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P f i s t e r TRW in the Pfister work-shop after extensive test and qualitycontrol.

P f i s t e r TRW without top sealing plate. The rotorwalls move with the scraper bars.1: rotor walls, 2: material outlet

3: scraper bars, 4: housing ring,

5: lower sealing plate.

T o p v i ew i n t o t h e m a t e r i al i n le t

with wear resistant lining.

Wo r k s h o p t e s t :

Pfister TRW in a test

with different abrasivematerials.

3

4

2

1

5

Pfister Workshop


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Three Pfister TRWs feeding a cement-mill in Germany

Pfister TRW feeding pre-ground cement clinker into a roller mill circuit in germancement plant.

P f i s t e r TRW feeding raw material into the cement mill at a Germangrinding plant. The complete closed and dust tight design reduces dust

emissions of the plant.

E v e n h i g h l y a b r a s i v e m a t e r i a l s such as pre-groundcement clinker can be used with the Pfister TRW.

V i ew t h r o u g h t h e s e r v i ce o p e n -

i n g i n t o t h e f e e d e r .

What applications are there?

Applications


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Modernisation of white clinker feeding to cement mill in France

N e w I n s t a l la t i o n : Ro t o r w e i gh f e e d e r f o r h o t w h i t e c e m e n t

c l i n k e r , directly flanged to the silo outlet. It is possible to feed mate-rial with a peak temperature of 250C because only steel parts are in

contact with the bulk material. Fading of the paint at the frame proofesextreme temperatures ( 1 ) .

1

O l d I n s t a l l a t i o n : traditional belt weighfeederwith rubber belt. The customer had to replace the

belt regularly. The new Pfister TRW drasticallyreduced wear and maintenance.

Pfister TRW feeding iron oxide to a cement mill in Germany

I n s t a l l a t i o n f o r i r o n o x i d e f e e d i n g . The rotor weighfeederis suspended at the pre-bin which is placed on load cells. This

makes online-calibration possible.

Applications


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Pfister TRW feeding pre-ground white cement clinker in France

P f i s t e r TRW for pre-ground white cement clinker directlyflanged to the silo outlet.

View through the s e r v i c e o p e n i n g in the top seal-ing plate of the feeder.

View through a service opening in the top sealingplate toward the m a t e r i al o u t l e t .

Applications


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Pfister TRW

Application: Mill feeding, especially for hot

and abrasive bulk material.

Bulk Material: All kind of coarse material.

Design:

The machine is engineered, designed, as-

sembled and tested in Germany.

All bulk material touching parts are made of

wear resistant steel.

Certification:

DIN EN ISO 9001:2000

Feedrate: 2.0 t/h to 400 t/h

Feedrange: 10% to 100%

Accuracy: 0.5%

over the complete feedrange related to the ac-

tual value.

Dimensions, depending on model:

Height: 1320 mm to 1900 mmWeight: 1,550 kg to 5,500 kg

Electronic Controller:

Pfister CSC controller with proactive control

strategy ProsCon.

Electronics Temperature Range:

Standard: 0C to +40C

With heater*: -20C to +40C

With cooler

*

: 0C to +55C* installed in the electrical cabinet at the feeder

Interface to Plant Control System:

Serial-Interface (ModBus-RTU).

Network-Interface.

(Profi-Bus DP, DeviceNet)

Analog/Digital-Hardwired Interface.

What are the technical facts?

Technical Facts


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P f is t e r D RW

Pulverized fuels

P f i s t e r FRW

Powdered products

P f i st e r T RW - K

Crushed raw coal

P f is t e r T RW

Coarse products

P f i st e r V RW

Powdered products

P f i s t e r TRW -S

Alternative fuels

To see to the contend of your interest please click on the links below on our website:

Press articles

http://www.flsmidth.com/Pfister/English/News/Pfister+news/Press+archive.htm

Special-interest articles

http://www.flsmidth.com/Pfister/English/Special+interest+articles/Special-interest+articles.htm

Brochures

http://www.flsmidth.com/Pfister/English/Downloads/Datasheets+and+Brochures/Brochures/Brochures.htm

Product datasheets

http://www.flsmidth.com/Pfister/English/Downloads/Datasheets+and+Brochures/Datasheets/

Datasheets.htm

Product animations

http://www.flsmidth.com/Pfister/English/Downloads/Product+animations/Product+animations.htm

Further Information


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Contacts

Sales Department: [email protected] Department: [email protected] Department: [email protected]

Transweigh India Ltd.124, ABCD, Govt. Industrial EstateKandivli (W)Mumbai - 400 067IndiaT. + 91 22 2868 2311F. + 91 22 2868 [email protected]

FLSmidth Pfister GmbH ChinaWestern Part of Songshan RoadQingdao Airport Industrial ZoneChengyang District266109 QingdaoP. R. ChinaT. +86 532 877 60380F. +86 532 877 [email protected]

FLSmidth Pfister GmbHStaetzlinger Str. 7086165 AugsburgGermanyT. +49 821 7949 0F. +49 821 7949 524www.pfister.de

Branches offices & joint ventures

FLSmidth Pfister Inc.2158 Avenue C, Suite 201Bethlehem, PA18017-2148U.S.A.T. +1 610 2645110F. +1 610 [email protected]

FLSmidth Pfister Ltda.Rua Vigrio J.J. Rodrigues,905 - c.j. 5113.201 - 490 JundiaiS.P., Brazil

T. +55 11 45266744F. +55 11 [email protected]

FLSmidth Pfister GmbHMalaysian BranchC-3A15, Centre WingMetropolitan Office SuiteMetropolitan Square, Jalan PJU 8/1Damansara Perdana47820 Petaling JayaSelangor

MalaysiaT. +60 3 7728 2039F. +60 3 7727 [email protected]

FLSmidth Pfister GmbH6, Rue de Bretagne38070 St. Quentin FallavierFranceT. +33 474 955544F. +33 474 [email protected]

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IB05200dGBPfisterTRW