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Specifications of our Refiner

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The refiner we use is a 12 inch Sprout Bauer unit, equipped to ensure that the pulp is refined under carefully controlled conditions of temperature and pressure. A schematic appears below.

Figure 1


Our standard testing of softwood is done at a specific edge load (SEL) of 1.75 Ws/m, for further details click here. The other key plate specifications and the refining conditions we use are as follows:

Operating Conditions

Rotor Speed

1800 RPM

Flow Rate

350 lpm

Loop Capacity

240 liters

Target SEL

1.75 J / m

Stock Consistency

3.5%

Stock Temperature

25° C

Stock Sampling

0 to 200 kWh/t

Plate Specifications

Plate Factor

210 m/rev

ID / OD

12.7 / 30.4 mm

Bar Width

6.3 mm

Groove Width

3.56 mm

Groove Depth

5.25 mm

Average Bar Angle

13.13 degrees

Bar Density

75.39 bars / m