April 26th 2013

Frank-PTI Laboratory Refiner

LR 40Type Voith

Gunnar Lindblad

ELOF HANSSON TECHNOLOGY DAYS

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Laboratory Refiner LR1 Laboratory Refiner LR40

Water

Pulp

Pulper Mono-Pump Refiner

Laborrefiner LR40: System

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Sampling position with balance

Laborrefiner LR40: Versuchsstand

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5

1

1. User interface

2

2. Pulper

33. Sampling Point 4

4. Electrical cabinet

Laboratory Refiner: Refiner segments

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Technical DataNoice levelDimension and weight

Floor Unit

Control cabinet

Connections

Pulp ConsistencyBalance rangeMax. 6 Samples

< 76dBA

BxTxH: 2,37 x 0,9 x 1,8mWeight: 1300kg

BxTxH: 1,2 x 0,6 x 2,0mWeight: 360kg

400V / 50HzCompressed Air > 3 barFresh water

3 - 5,5 %1200 - 1900g otro(Total test volume 12l)

Laboratory Refiner LR40

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Application • grinding of primary and secondary fibers • Delivery and quality control

• Research and Development

Features

• Table Model• Modular design allows use of disks and cone segments• Easy and quick segment changes• Very simple, menu-driven operation• Fully automatic sampling• High accuracy• Excellent repeatability• Evaluation of all data through an integrated computer• Operation and control based on parameters and measurements, which are also used in the industrial process

Laboratory Refiner LR40

Laboratory Refiner LR 40 - Photos

Laboratory Refiner LR 40 – without front cover

LR 40 User interfaceFront view Inside view

LR40 – Torque measurment

Sampling – Valve assemblyBack pressure valve

Sample valve

Drain valveTurntable

Sampling - Balance

Balance loadcell

Turntable

Turntable Light sensor

LR40 – Distribution box on the table and solenoid valves

LR40 – Segment change

Spindle

Stator

LR40 – Cabinet and cableing in the table

Cable, with direct entry to the cabinet

Technology

Reproducibility with LR-1 freeness measurements

Laboratory Refiner LR-1

Bleached Sulfate Pulp from Pine

1 trial

2 trial

3 trial

Energy

Fre

enes

s va

lue

[SR

Repeatability with the LR-1 strengths

Bleached Sulfate Pulp from Pine 2,1 J/m

SR value {SR] Tear resistance [Nm/g]

1 trial

2 trial

3 trial

Bur

st In

dex

[kP

am2 /

g]

Tea

r In

dex

[mN

m2 /

g]

Comparison between LR-1 and the PFI Mill

Bur

st In

dex

[kP

am2 /

g]

Tea

r In

dex

[mN

m2 /

g]SR value {SR] Tear resistance [Nm/g]

Bleached Sulfate Pulp from Pine 2,1 J/m

Laboratory refiner LR-1

PFI-Mill

Comparison between LR-1 and a Double disk refiner

Bur

st In

dex

[kP

am2 /

g]

Tea

r In

dex

[mN

m2 /

g]SR value {SR] Tear resistance [Nm/g]

Laboratory refiner LR-1

Double Disk refiner DSR1

Bleached Sulfate Pulp from Pine 2,1 J/m

Strength Development

Comparison with Industrial refining: Specific energy and Tear index

0

10

20

30

40

50

60

0 100 200 300 400

Refiner Energy [kWh/t]

Pulp: Acacia TwinFloLaboratory Refiner

SR

- W

ert

[S

R]

0

20

40

60

80

10 20 30 40 50 60

SR -Wert [SR]

Re

issl

än

ge

nin

de

x [m

N/g

]

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Tea

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dex

[mN

m2 /

g]

Fre

enes

s va

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[SR

Freeness value [SR

1.0

1.5

2.0

2.5

10 20 30 40 50 60Freeness value [SR]

Sp

ec.

. V

olu

me

[cm

3 /g

]

Comparison with Industrial refining:Fiber length and spec. Volume

Pulp: Acacia TwinFloLaboratory Refiner

Freeness value [SR]

0.50

0.55

0.60

0.65

0.70

0.75

10 20 30 40 50 60

Me

an

F

ibe

r le

ng

th [

mm

]

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