Pellet as an Admixture for Metallurgical Processes and Method for Making and Using the Same

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This patent describes a pellet used as an additive in metallurgical processes, such as steelmaking. The pellet is made by combining carbon fiber-containing materials (often waste, like carbon fiber reinforced plastics) with a metal-containing component, typically iron ores or metal scraps. The result is a stable, easy-to-handle pellet that can substitute for traditional reductants like coke in furnaces. The invention further details methods for making the pellets and controlling their properties (such as porosity and size), and advocates for the recycling of carbon fiber-containing waste in metallurgy rather than incineration or landfill.

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• Replacement of coke as a reductant in steelmaking and other metallurgical furnaces.
• Utilization of carbon fiber-containing waste (e.g. from automotive or aerospace industries) in metal production processes.
• Production of porous iron pellets for use in blast furnaces, direct reduction furnaces, or electric arc furnaces.
• Sustainable disposal and valorization of composite material waste streams.
• Optimizing energy input and emission control in metallurgical manufacturing.

BenefitsContent extracted from patent full text and abstract with AI.

• Enables recycling and valorization of difficult-to-dispose carbon fiber composite waste, reducing landfill and incineration needs.
• Reduces reliance on natural coke or other reductants, conserving natural resources.
• Improves process efficiency due to enhanced pellet properties like density, porosity, and reactivity.
• Limits emission of harmful gases and fine carbon fibers during metallurgical processes, protecting both machinery and the environment.
• Allows precise dosing, transport, and storage of metallurgical additives due to pelletized form.
• Facilitates handling of metal scrap fractions that would otherwise be difficult to process, further closing material loops in the metals industry.

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Patent Abstract

Die vorliegende Erfindung betrifft Pellets als Zuschlagstoff für metallurgische Prozesse. Die Pellets enthalten kohlenstofffaserhaltige Werkstoffe mit einem maximalen gemittelten Äquivalentdurchmesser x 80 von 1,0 mm und eine metallhaltige Komponente, wobei das Gewichtsverhältnis von kohlenstofffaserhaltigen Werkstoffen zu metallhaltiger Komponente im Bereich von 1:99 bis 50:50 liegt. Des Weiteren betrifft die Erfindung ein Verfahren zur Herstellung dieser Pellets und eine Verwendung der Pellets.