April 26th 2013 Frank-PTI Laboratory Refiner LR 40 Type Voith ELOF HANSSON TECHNOLOGY DAYS April 26th 2013 Frank-PTI Laboratory Refiner LR 40 Type Voith Gunnar Lindblad

Laboratory Refiner LR40 Laboratory Refiner LR1 VPR Chapter 09 No 0653 Ed 01

Laborrefiner LR40: System Water Pulp VPR Chapter 09 No 3475 Ed 01 You can see the test stand in the top corner. the furnish is desintegrated in the pulper fed by mohno-pump to the refiner recirculated to chest depending on energy input sampling will be started sample amount will be taken into account. process runs full automatically. a short view to the table  Mono- Pump Pulper Refiner Sampling position with balance

Laborrefiner LR40: Versuchsstand 1 User interface 2 2. Pulper 3 3. Sampling Point 4 4. Electrical cabinet 5. Refiner 5 VPR Chapter 09 No 3478 Ed 01  As required for research purposes there are a lot of fillings avaialble 

Laboratory Refiner: Refiner segments VPR Chapter 09 No 2052 Ed 01 5 sec 

Laboratory Refiner LR40 Technical Data Noice level Dimension and weight Floor Unit Control cabinet Connections Pulp Consistency Balance range Max. 6 Samples < 76dBA BxTxH: 2,37 x 0,9 x 1,8m Weight: 1300kg BxTxH: 1,2 x 0,6 x 2,0m Weight: 360kg 400V / 50Hz Compressed Air > 3 bar Fresh water 3 - 5,5 % 1200 - 1900g otro (Total test volume 12l) VPR Chapter 09 No 0652 Ed 03

Laboratory Refiner LR40 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 VPR Chapter 09 No 0653 Ed 01

Laboratory Refiner LR 40 - Photos

Laboratory Refiner LR 40 – without front cover

LR 40 User interface Front view Inside view

LR40 – Torque measurment

Sampling – Valve assembly Back pressure valve Sample valve Turntable Drain valve

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 Bleached Sulfate Pulp from Pine Freeness value [SR Laboratory Refiner LR-1 1 trial 2 trial 3 trial Energy

Repeatability with the LR-1 strengths Burst Index [kPam2/g] Tear Index [mNm2/g] SR value {SR] Tear resistance [Nm/g] Bleached Sulfate Pulp from Pine 2,1 J/m 1 trial 2 trial 3 trial

Comparison between LR-1 and the PFI Mill Tear Index [mNm2/g] Burst Index [kPam2/g] SR value {SR] Tear resistance [Nm/g] Laboratory refiner LR-1 PFI-Mill Bleached Sulfate Pulp from Pine 2,1 J/m

Comparison between LR-1 and a Double disk refiner Strength Development Tear Index [mNm2/g] Burst Index [kPam2/g] SR value {SR] Tear resistance [Nm/g] Bleached Sulfate Pulp from Pine 2,1 J/m Laboratory refiner LR-1 Double Disk refiner DSR1

Comparison with Industrial refining: Specific energy and Tear index 60 20 40 60 80 10 30 50 SR -Wert [SR] Reisslängenindex [mN/g] 50 SR- Wert [SR] Freeness value [SR 40 Tear Index [mNm2/g] 30 20 10 VPR Chapter 09 No 3511 Ed 01 At the left handside we see the SR-value as a function of net specific energy. The TwinFlo results are from the previous trials.  the blue circles are the results with the LR40 There is a good correlation.  the second diagram shows the Tensile index versus the SR-value. The lab refining has a slight better strength development, compared to industrial size.  100 200 300 400 Freeness value [SR Refiner Energy [kWh/t] Pulp: Acacia Laboratory Refiner TwinFlo

Comparison with Industrial refining: Fiber length and spec. Volume 0.75 1.0 1.5 2.0 2.5 10 20 30 40 50 60 Freeness value [SR] Spec.. Volume [cm3/g] 0.70 0.65 Mean Fiber length [mm] 0.60 0.55 0.50 VPR Chapter 09 No 3512 Ed 01 even with the higher tensile the lab equipment creates shorter fibres at same freeness  there is quite no influence to the development of bulk, painted against SR value.  10 20 30 40 50 60 Freeness value [SR] Pulp: Acacia Laboratory Refiner TwinFlo