Patents by Inventor Ralf Lemke

Ralf Lemke has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Storage-stable spent potlining material, method for the production thereof, and use of the same as fuel
    Patent number: 12325835
    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.
    Type: Grant
    Filed: May 17, 2024
    Date of Patent: June 10, 2025
    Assignee: Speira GmbH
    Inventors: Ralf Lemke, Olaf Güßgen, Kathrin Eckhard, Joachim Höfler, Andreas Beermann, Thorsten Kensy
  • Storage-Stable Spent Potlining Material, Method for the Production Thereof, and Use of the Same as Fuel
    Publication number: 20240301313
    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.
    Type: Application
    Filed: May 17, 2024
    Publication date: September 12, 2024
    Applicant: Speira GmbH
    Inventors: Ralf Lemke, Olaf Güßgen, Kathrin Eckhard, Joachim Höfler, Andreas Beermann, Thorsten Kensy