System and method for recovering bitumen, granules, and limestone fillers from used asphalt shingles

A system for recovering bitumen, granules, and limestone filler from asphalt shingles, comprising:

• a mixer configured to receive and mix the asphalt shingles and a solvent to produce a slurry;
• a filter configured to receive and process the slurry to generate a cake material and a filtrate;
• a first dryer configured to receive and heat the cake material to isolate the granules of the asphalt shingles;
• a centrifuge configured to receive and separate the filtrate into a first phase material and a second phase material;
• a second dryer configured to receive and heat the first phase material to isolate the limestone filler of the asphalt shingles;
• and
• a distillation unit configured to receive and process the second phase material to isolate the bitumen of the asphalt shingles.

A method for recovering bitumen, granules, and limestone filler from asphalt shingles, the method comprising steps of:

• mixing a solvent and the asphalt shingles to produce a slurry;
• processing the slurry to produce a cake material and a filtrate;
• drying the cake material to isolate granules within the asphalt shingles;
• centrifuging the filtrate to produce a first phase material including limestone filler and a second phase material including bitumen;
• drying the first phase material to isolate the limestone filler;
• and
• distilling the second phase material to isolate the bitumen.

A system for recovering constituents of asphalt shingles, comprising:

• a mixer configured to receive and mix the asphalt shingles and a solvent to produce a slurry;
• a centrifuge configured to receive and separate the slurry into a first phase material and a second phase material;
• a dryer configured to receive and heat the first phase material to recover a first constituent of the asphalt shingles;
• and
• a distillation unit configured to receive and process the second phase material to recover a second constituent of the asphalt shingles.