A HIGH PRESSURE METHOD OF BITUMEN EXTRACTION FROM ASPHALT PAVEMENT
作者:
ThomasJ. Houser,
期刊:
Fuel Science and Technology International
(Taylor Available online 1992)
卷期:
Volume 10,
issue 4-6
页码: 565-580
ISSN:0884-3759
年代: 1992
DOI:10.1080/08843759208916011
出版商: Taylor & Francis Group
数据来源: Taylor
摘要:
A new. less costly method of extracting bitumen from asphalt pavament mixtures has been developed which gives bitumen contents essentially the same as those obtained by the currently used centrifuge method. The preferred solvent is cyclohexane (although cyclopentane may be used) at high temperatures and pressures. The new method uses these non-chlorinated solvents at high temperatures and pressures (but sub-critical) to dissolve and extract asphalt from the mix in a stainless steel extractor vessel. Although these solvents are less hazardous to the health of the laboratory personnel than chlorinated solvents, they can be a fire hazard unless reasonable precautions are exercised
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