Centrifuge Extractors are used for quantitative determination of bitumen content in paving mixtures. These units require a relatively short processing time, which includes weighing the asphalt sample, heating the sample slightly until it starts crumbling, cooling the sample, placing it in the centrifuge extractor's rotor bowl and then adding solvent. The extractor's centrifugal action forces liquid through a filter paper ring at bowl's periphery, and the process is repeated until the expelled solvent is a clear color. Once this is accomplished the remaining aggregates is weighed and graded. Weight before and after extraction determines constituent proportions.
These motorized extractors have accurate, dependable electronic solid state speed control; rotation speed adjusts up and down. An electric brake stops rotation in less than 10 seconds. Explosion-proof, motorized units offer the same features along with greater safety. All Humboldt centrifuge extractors comply with ASTM D2172 (Method A) and AASHTO T164.
Centrifuge Extractor (Explosion Proof)
Analog-controlled Extractor with cast aluminum construction
Centrifuge Extractor (Open Motor)
Non-explosion proof Model with Analog Control
Auto Centrifuge Extractor, (Explosion Proof)
Digital-Controlled Extractor with cast-aluminum construction, explosion-proof
Auto Centrifuge Extractor (Open Motor)
Non-explosion proof Model with Digital Control
Centrifuge Extractor, Filterless
Use in the extraction of mineral fines from bitumen-laden solvents obtained from standard asphalt extraction tests.
Filter Papers for Centrifuge Extractors
Filter Papers For use with Centrifuge Extraction Sets
Asphalt Centrifuge Extractor (Explosion Proof)
Available in 1500g and 3000g capacities, these extractors conform to the explosion-proof standards for the safety of operating personnel.
Asphalt Centrifuge Extractor (Open Motor)
Economy model, available only in 1500g model