Patent classifications
B03B9/02
SYSTEM AND METHOD FOR RECOVERING BITUMEN, GRANULES, AND LIMESTONE FILLERS FROM USED ASPHALT SHINGLES
A system for recovering bitumen, granules, and limestone fillers from asphalt shingles includes: a mixer; a filter; a first dryer; a centrifuge; a second dryer; and a distillation unit. The mixer receives and mixes asphalt shingles and a solvent to produce a slurry. The filter processes the slurry to generate a cake material and a filtrate. The cake material is received and heated by the first dryer to isolate a first constituent of the asphalt shingles. The filtrate is received and separated by the centrifuge into a first phase material and a second phase material. The first phase material is received and heated by the second dryer to isolate a second constituent of the asphalt shingles. The second phase material is processed by the distillation unit to isolate a third constituent of the asphalt shingles. A method for recovering bitumen, granules, and limestone fillers from asphalt shingles is also disclosed.
SYSTEM AND METHOD FOR RECOVERING BITUMEN, GRANULES, AND LIMESTONE FILLERS FROM USED ASPHALT SHINGLES
A system for recovering bitumen, granules, and limestone fillers from asphalt shingles includes: a mixer; a filter; a first dryer; a centrifuge; a second dryer; and a distillation unit. The mixer receives and mixes asphalt shingles and a solvent to produce a slurry. The filter processes the slurry to generate a cake material and a filtrate. The cake material is received and heated by the first dryer to isolate a first constituent of the asphalt shingles. The filtrate is received and separated by the centrifuge into a first phase material and a second phase material. The first phase material is received and heated by the second dryer to isolate a second constituent of the asphalt shingles. The second phase material is processed by the distillation unit to isolate a third constituent of the asphalt shingles. A method for recovering bitumen, granules, and limestone fillers from asphalt shingles is also disclosed.