Filterless Centrifuge Binder Extractors

The centrifuge can also be used for binder recovery from an asphalt sample previously disgregated in solvent and poured into the funnel fit with 200 mm dia. test sieves to separate gradually the aggregates. The test is carried out by pouring the solvent from the top funnel into the rotating aluminium cup. Used for rapid filterless separation of filler (ash) from binder solution coming, for instance, from wire mesh extractor. Due to the centrifugal effect, the liquid spreads on the wall and moves upwards, leaving mineral particles in the cup whilst the liquid is discharged outside through the outlet tubing. A special electronic circuit provides for a preset controlled ramp which gradually increases the speed to the maximum. The solvent used can be profitably recovered with the  solvent recovery unit.

Main Features:

Filterless method assures complete filler recovery

Automatic ramp and pre-set speed control

High speed with continuous flow

Up to 100 g or 400 g can be extracted per test.