US 11,753,698 B2
Bio-reduction of metal ores integrated with biomass pyrolysis
James A. Mennell, Brighton, UT (US); Daren Daugaard, Newburg, MO (US); and Dustin Slack, Gwinn, MI (US)
Assigned to Carbon Technology Holdings, LLC, Oakdale, MN (US)
Filed by Carbon Technology Holdings, LLC, Oakdale, MN (US)
Filed on Sep. 25, 2021, as Appl. No. 17/485,362.
Claims priority of provisional application 63/083,223, filed on Sep. 25, 2020.
Prior Publication US 2022/0098701 A1, Mar. 31, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. C22B 1/24 (2006.01); C22B 5/12 (2006.01); C10B 53/02 (2006.01); C21B 5/00 (2006.01); C22B 1/00 (2006.01); C21B 13/00 (2006.01); C22B 15/00 (2006.01); C22B 23/02 (2006.01)
CPC C22B 1/2406 (2013.01) [C10B 53/02 (2013.01); C21B 5/008 (2013.01); C21B 13/004 (2013.01); C22B 1/005 (2013.01); C22B 5/12 (2013.01); C22B 15/0021 (2013.01); C22B 23/02 (2013.01)] 24 Claims
OG exemplary drawing
 
1. A process for producing carbon-metal ore pellets, the process comprising:
providing a biomass feedstock;
pyrolyzing the biomass feedstock, thereby generating a biogenic reagent, wherein the biogenic reagent comprises carbon;
providing a metal ore, wherein the metal ore comprises a metal oxide, wherein the metal ore is in particulate form;
combining the carbon with the metal ore, thereby generating a carbon-metal ore particulate; and
pelletizing the carbon-metal ore particulate, thereby generating a carbon-metal ore pellet;
wherein the biogenic reagent comprises at least 50 wt % fixed carbon; and
wherein the carbon-metal ore particulate comprises at least about 0.1 wt % to at most about 50 wt % total carbon.