ASTM D1856, AASHTO T164, AASHTO T170
The filterless centrifuge is effective for recovery of mineral filler fines from bitumen-laden nonflammable solvents from asphalt mix extraction tests. Because no filter is used, there is no dispersion of material.
The solvent is fed through a top funnel through a regulating valve into a special aluminum beaker 70x200mm spinning at 11,000 rpm. At the high rpm the liquid moves up the beaker wall and out the overflow tube while the solids remain in the beaker due to the centrifugal force. Continuous feeding of the solvent is possible until the capacity of the beaker is reached.
The unit has controlled quiet acceleration and top speed is reached quickly. Dynamic breaking controls the stopping of the beaker.
Extraction capacity is up to 100 g. of filler per test
The unit has a steel casing and aluminum sieve holder, bowl and beakers. Two beakers and two sieves No18 (1mm) ;No200 (75um) are included. 220V/60Hz.