Molten Aluminum Purification Systems, CFF Filtering System

The basic task of aluminum alloy smelting is to put a certain proportion of the metal charge into the furnace. After heating and melting to obtain a melt, the composition of the melt is adjusted to obtain an alloy liquid that meets the requirements. In the smelting process of recycled aluminum, corresponding methods are used to control the content of gas and oxidizing impurities to reach the specified composition and to ensure that the castings obtain high-quality aluminum alloy liquid. AdTech can provide molten aluminum purification systems, operating methods, metallurgical services and support.

Molten Aluminum Purification Systems

The molten aluminum purification systems include the degassing system and filtering system. The online degassing system can control the gas content, and the ceramic foam filter (CFF) filtering system can capture oxidized inclusions, which is essential for keeping the ingot clean during the metal solidification process. Therefore, the quality and productivity of downstream operations (such as forging, extrusion, and rolling) are guaranteed.

Ceramic foam filters for casting are used to remove entrained solids from molten aluminum alloys before casting. When the molten aluminum solidifies, when these inclusions appear in the final cast product, they will cause the final aluminum product to have reduced ductility or poor trimming properties. Therefore, it is important to remove the entrained solids from the molten aluminum before casting the molten aluminum into a solid.

The ceramic filter for foundry can remove the inclusions generated between the refining system and the mold table. Filter by reducing the content of non-metallic inclusions and oxide film in molten metal. The ability of ceramic foam filters to capture these inclusions is critical to maintaining a clean ingot during the metal solidification process. Therefore, the quality and productivity of downstream operations such as forging, extrusion, and rolling are guaranteed.

Advantages of AdTech CFF Filtering System

  • Particles larger than the pore size are captured on the top of the ceramic foam filter
  • The smaller particles are captured by the filter cake formed by the larger particles
  • Fine particles are trapped in the pores of the filter
  • Improve the mechanical properties of castings
  • Increase process yield
  • Reduce porosity in metals, thereby improving quality
  • Extend tool life after casting
  • Increase productivity

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