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AssigneeSpeira GmbH
InventorsRalf Lemke, Olaf Güßgen, Kathrin Eckhard, Joachim Höfler, Andreas Beermann, Thorsten Kensy
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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.
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.
Method for producing a spent potlining material, comprising the following steps:
Dependencies are inferred from the claim text.