Compositions: coating or plastic – Coating or plastic compositions – Bituminous material or tarry residue
Patent
1999-02-09
2000-04-04
Brunsman, David
Compositions: coating or plastic
Coating or plastic compositions
Bituminous material or tarry residue
106276, 106279, 106280, 106284, 10628401, 10628402, 10628403, 10628404, 10628405, 10628406, L09D19500
Patent
active
060456086
ABSTRACT:
An improved process for making asphalt involves incorporating tar sands into a hot asphalt mix process and modifying the process. The improved process involves using a heated asphalt counter-flow drum mixer to admix asphaltic cement, coarse aggregate, and fine aggregate. During this mixing process, the admixture is heated to produce the asphaltic concrete. In the improved process from about 20 to about 80 percent tar sand is mixed with from about 80 to about 20 percent aggregate and from about 1 to less than about 5 percent liquid asphalt cement in a drum mixer to form an admixture, heating the admixture to a first elevated temperature (e.g., 250.degree. and 400.degree. F.) for a set period of time (e.g., 40 to about 90 seconds); and discharging the heated admixture at a second elevated temperature (e.g., from about 150.degree. to about 350.degree. F.) to produce asphaltic concrete. Preferably, the aggregate has a gradation of 10 to 25 percent passing a #4 sieve, and the admixture has substantially no added fines.
REFERENCES:
patent: 3936371 (1976-02-01), Ueda et al.
patent: 4657698 (1987-04-01), Najjar et al.
patent: 4705538 (1987-11-01), Najjar et al.
patent: 4705539 (1987-11-01), Najjar et al.
patent: 4708788 (1987-11-01), Low
patent: 4732700 (1988-03-01), Najjar et al.
patent: 4808198 (1989-02-01), Richter
patent: 4875906 (1989-10-01), Apel
patent: 5083382 (1992-01-01), Brashears
patent: 5196058 (1993-03-01), Merrell
patent: 5318199 (1994-06-01), Brashears
patent: 5515620 (1996-05-01), Butler
patent: 5538340 (1996-07-01), Brashears
patent: 5728202 (1998-03-01), Nelson et al.
patent: 5772317 (1998-06-01), Butler
Mitchell Gil N.
Mitchell Ned B.
Brunsman David
Ned B. Mitchell, Inc.
LandOfFree
Apparatus and process for manufacturing asphalt does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Apparatus and process for manufacturing asphalt, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus and process for manufacturing asphalt will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-361107