US 12,325,835 B2
Storage-stable spent potlining material, method for the production thereof, and use of the same as fuel
Ralf Lemke, Nettetal (DE); Olaf Güßgen, Cologne (DE); Kathrin Eckhard, Cologne (DE); Joachim Höfler, Roetgen (DE); Andreas Beermann, Oberhausen (DE); and Thorsten Kensy, Hückelhoven (DE)
Assigned to Speira GmbH, Grevenbroich (DE)
Filed by Ralf Lemke, Nettetal (DE); Olaf Güßgen, Cologne (DE); Kathrin Eckhard, Cologne (DE); Joachim Höfler, Roetgen (DE); Andreas Beermann, Oberhausen (DE); and Thorsten Kensy, Hückelhoven (DE)
Filed on May 17, 2024, as Appl. No. 18/667,403.
Application 18/667,403 is a continuation of application No. PCT/EP2022/083258, filed on Nov. 25, 2022.
Claims priority of application No. 21210576 (EP), filed on Nov. 25, 2021.
Prior Publication US 2024/0301313 A1, Sep. 12, 2024
Int. Cl. C10L 5/48 (2006.01); C25C 3/06 (2006.01)
CPC C10L 5/48 (2013.01) [C10L 2200/0453 (2013.01); C25C 3/06 (2013.01)] 14 Claims
OG exemplary drawing
 
1. Spent potlining material containing spent potliner from aluminum electrolysis cells, and at least one hydrophobic binder, wherein the spent potliner is present in agglomerated form with the hydrophobic binder, wherein the hydrophobic binder is selected from wax, a wax-like compound, or mixtures thereof, wherein the spent potlining material contains 30 to 90 wt. % spent potliner and 10 to 70 wt. % hydrophobic binder, relative to the total weight of the spent potlining material.