US 12,251,710 B2
Recovery of valuable components from a waste stream
Jerry Ryan Njavro, Pompano Beach, FL (US); and Samuel P. Jacobs, Pompano Beach, FL (US)
Assigned to Micro Fines Recycling Holdings, Pompano Beach, FL (US)
Filed by Micro Fines Recycling Holdings, Pompano Beach, FL (US)
Filed on Jul. 11, 2022, as Appl. No. 17/861,933.
Prior Publication US 2024/0009682 A1, Jan. 11, 2024
Int. Cl. B03B 9/06 (2006.01); B09B 3/35 (2022.01); B09B 101/05 (2022.01)
CPC B03B 9/061 (2013.01) [B09B 3/35 (2022.01); B09B 2101/05 (2022.01)] 17 Claims
OG exemplary drawing
 
1. A process for recovering metal components from a waste stream, the process comprising:
providing shredded material in a form of particles, wherein at least 95% of the particles have a size of less than 1 inch;
separating, based on size, the particles into a plurality of streams comprising a first stream with particles in a first size range, a second stream with particles in a second size range greater than the first size range, and a third stream with particles in a third size range greater than the second size range;
separating, using a gravity separation table, each of the plurality of streams into a first substream of greater density and a second substream of lesser density;
pulverizing, using a vibratory dowel mill, the first substream of greater density of both of the first and second streams, leaving metallic components in flattened sheet form;
collecting, after the pulverizing, the metallic components in flattened sheet form from the first substream of the first and second streams, wherein the metallic components in flattened sheet form comprise at least 60 wt. % copper; and
collecting additional metallic components from the first substream of the third stream, wherein the additional metallic components comprise aluminum, copper, and steel.