Method and an apparatus for mixing gravel and bitumen
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United States of America Patent
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-
May 23, 1989
Grant Date -
N/A
app pub date -
Sep 11, 1987
filing date -
Nov 29, 1985
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A method and an apparatus for mixing gravel materials and bitumen. The gravel material is mixed with a bitumen emulsion by causing the gravel material to fall onto an inclined screen (12) separating coarse gravel particles (G) from fine gravel particles (g) in such a manner that the coarse gravel particles and fine gravel particles follow different paths of free fall while spraying bitumen separately onto the two gravel follows which then are reunited via oppositely inclined baffles (20, 22). Preferably the reunited bituminous gravel material is then sprayed with additional bitumen and then allowed to fall freely onto further baffles (26, 28).
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Cited Art Landscape
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