PROCESS FOR MANUFACTURING ASPHALT
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United States of America Patent
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Issued Date -
Feb 24, 2011
app pub date -
Apr 1, 2009
filing date -
Apr 2, 2008
priority date (Note) -
Abandoned
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Abstract
A process for manufacturing asphalt is disclosed. The process comprises the steps of : (i) heating bitumen; (ii) heating aggregate; and (iii) mixing the hot bitumen with the hot aggregate in a mixing unit to form asphalt. From 10 to 200 wt % of sulphur, based upon the weight of the bitumen, is added in at least one of the steps (i), (ii) or (iii) and from 0.1 to 20 wt % of paraffin wax is added in at least one of the steps (i), (ii) or (iii).
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