US 11,883,828 B2
Process for treating construction and demolition waste material with kinetic pulverization
Christopher Mueller, King (CA); Michael Drolet, Hamilton (BM); Peter Everson, Hamilton (BM); and Terri Ward, Hamilton (BM)
Assigned to TORXX KINETIC PULVERIZER LIMITED, Hamilton (BM)
Filed by TORXX KINETIC PULVERIZER LIMITED, Hamilton (BM)
Filed on Nov. 25, 2022, as Appl. No. 17/994,104.
Application 17/994,104 is a continuation of application No. PCT/CA2022/051016, filed on Jun. 23, 2022.
Claims priority of application No. 3123240 (CA), filed on Jun. 25, 2021; and application No. 3145069 (CA), filed on Jan. 7, 2022.
Prior Publication US 2023/0101815 A1, Mar. 30, 2023
Int. Cl. B02C 13/00 (2006.01); B02C 7/02 (2006.01); B09B 3/35 (2022.01); B02C 13/14 (2006.01); B02C 13/18 (2006.01); B02C 23/08 (2006.01); B02C 23/10 (2006.01)
CPC B02C 7/02 (2013.01) [B02C 13/14 (2013.01); B02C 13/18 (2013.01); B02C 23/08 (2013.01); B02C 23/10 (2013.01); B09B 3/35 (2022.01)] 30 Claims
OG exemplary drawing
 
1. A process for treating construction and/or demolition (C&D) debris comprising:
providing a C&D fines stream comprising a frangible material and a ductile material;
providing a kinetic pulverizer comprising a pulverizing rotor assembly disposed within an interior chamber, wherein the pulverizing rotor assembly is configured to rotate to form vortices that subjects the C&D fines stream to self-collisions within the interior chamber;
subjecting the C&D fines streams to a kinetic pulverization stage wherein the C&D fines stream is fed into the kinetic pulverizer to produce a pulverized material comprising a size-reduced fraction derived from the frangible material and an oversized fraction derived from the ductile material;
withdrawing the pulverized material from the kinetic pulverizer; and
subjecting the pulverized material to a separation stage to produce a size-reduced stream and an oversized stream,
wherein the C&D fines stream comprises gypsum and wherein the kinetic pulverizer is operated such that individual particles of the size-reduced fraction are less than 2 mm in diameter.