The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 10, 2025
Filed:
May. 17, 2024
Ralf Lemke, Nettetal, DE;
Olaf Güßgen, Cologne, DE;
Kathrin Eckhard, Cologne, DE;
Joachim Höfler, Roetgen, DE;
Andreas Beermann, Oberhausen, DE;
Thorsten Kensy, Hückelhoven, DE;
Ralf Lemke, Nettetal, DE;
Olaf Güßgen, Cologne, DE;
Kathrin Eckhard, Cologne, DE;
Joachim Höfler, Roetgen, DE;
Andreas Beermann, Oberhausen, DE;
Thorsten Kensy, Hückelhoven, DE;
Speira GmbH, Grevenbroich, DE;
Abstract
Spent potlining material contains spent potliner from aluminium electrolysis cells, and at least one hydrophobic binder. The hydrophobic binder being selected from wax, a waxlike compound or mixtures thereof. A method for producing a spent potlining material includes the steps of (a) providing spent potliner from aluminium electrolysis cells, (b) comminuting the spent potliner in at least one comminuting apparatus, (c) fractionating the spent potliner through a separating apparatus, (d) mixing the spent potliner with at least one hydrophobic binder, selected from wax, a waxlike compound or mixtures thereof, in a mixing apparatus, (e) portioning the mixture obtained in step (d), (f) withdrawing the spent potlining material The steps (b) to (d) are carried out in an inert gas atmosphere. Also, spent potlining material is used as fuel in power stations and also in connection with the production of mineral wool, cement and steel.