Apparatus for separating aggregates from an asphalt-aggregate mi

Details Apparatus for separating aggregates from an asphalt-aggregate mi Apparatus for separating aggregates from an asphalt-aggregate mi

1995-07-06

1996-09-03

Cooley, Charles E.

Imperforate bowl: centrifugal separators

With cyclic or time control means

494 30, 73866, B04B 1300, B04B 1104

Patent

active

055519407

ABSTRACT:
A centrifuge is utilized to extract asphalt from a test sample containing asphalt and dispersed aggregates, so that the sample can be analyzed for asphalt content, and aggregate particle size distributions. Organic solvent, water and liquid soap are fed sequentially (selectively) into a rotatable bowl in the centrifuge for dissolving the asphalt, emulsifying solvent films on the aggregate, and rinsing soap film off of the aggregate particles. The quantities of solvent, water and liquid soap are controlled by a programmable controller containing a microprocessor, such that the asphalt extraction process is accomplished automatically, with minimum consumption of solvent, liquid soap and water. The controller can be reprogrammed as necessary to achieve different operational cycles, based on experience and test sample variations.

REFERENCES:
patent: 3203253 (1965-08-01), Scheid
patent: 3524353 (1970-08-01), Bors
patent: 3686959 (1972-08-01), Kruiger

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