Retention (Dynamic drainage jar No.2586)

It is widely known that the retention of the filler and fines rapidly drops as the running speed of the paper machine increases. This equipment is designed to reproduce the turbulence condition on the paper machine's wire part and to measure the retention of the filler and fines. An agitator is incorporated to apply a sudden shear force on slurry to have it deposited as a mat on the wire installed in the pulp tank. Then a certain amount of white water is sampled
From the first portion that has passed through the wire. After accurate measurement of the white water, the solid portion is filtered through filter paper and dried, and then the amount of the ash content is measured, based on which the OPR (retention of fines and filler) is calculated.

Spesification

Drainage section:

Pulp concentration	0.1 to 0.4 %
Specimen supply volume	500 ml (for one test cycle)
Specimen tank volume	1000 ml
Optional	specimen tank with baffle
Screen plate	125 P (200 mesh)

Agitator section:

Rotation speed	0 to 5000 rpm (steplessly variable)
Agitation blade	60 mm in diameter, 4 blades
Interval between agitation blade and plate	6 mm
Power source	100/110 VAC 50/60 Hz 2A
Referential standards	TAPPI T-261cm-91
Outer dimensions	750x295x785 mm
Instrument weight	6.5 kg