Filters Made from Carbon-Bonded Materials for Aluminum Melt Filtration

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This invention relates to filters made of carbon-bonded or carbon-containing materials used for filtering molten aluminum. When these filters come into contact with molten aluminum, they form collectors made from Al2O3 (alumina) and/or carbon, which can trap unwanted inclusions. These collectors stay within the filter's pores or on its surface, supported by an in-situ formed layer of alumina and carbon that enhances the filtration process.

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• Purification of molten aluminum in metal casting and foundry operations
• Improving the quality of aluminum products by removing solid and liquid impurities during smelting
• Use in aluminum recycling facilities to filter unwanted inclusions from recycled metals
• Integration into automated aluminum processing lines for continuous filtration

BenefitsContent extracted from patent full text and abstract with AI.

• Efficient removal of both endogenous (originating within the metal) and exogenous (external) inclusions, leading to higher purity aluminum
• Enhanced mechanical properties of filtered aluminum products due to reduced impurities
• Formation of a self-supporting filtration layer during operation, improving filter effectiveness and lifespan
• Can be used in existing aluminum processing workflows with minimal modification

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Patent Abstract

Kohlenstoffgebundene oder kohlenstoffhaltige Filter für die Metallschmelzefiltration, welche sich in Kontakt mit Aluminiumschmelze Kollektoren aus Al2O3und/oder C bilden, an denen sich endogene und exogene Einschlüsse abscheiden lassen und diese beladenen Kollektoren in den funktionalen Makroporen der Filterkeramik bleiben bzw. sich an der Filteroberfläche abscheiden lassen. An der Filteroberfläche entsteht auch eine in situ Schicht, die aus Al2O3und C besteht und die Filtration unterstützt.