Alumina Ceramic Foam Filter for Molten Aluminum Filtration

Alumina foam ceramic filter plate can effectively remove all kinds of inclusions with the micron level in aluminum water. So that the aluminum water becomes a steady laminar flow, which is conducive to filling. The ceramic foam filter has a unique mullite-corundum structure, good mechanical strength and chemical stability, and excellent resistance to aluminum erosion. Strictly controlled hole size and through-hole rate can obtain stable filtration effect. There is a sealing ceramic fiber gasket around the foam ceramic filter plate, which helps to seal the ceramic filter plate in the filter box. AdTech alumina ceramic foam filter product is mainly used in the purification process in the production of aluminum and aluminum alloys. It is also used as various gas-solid and liquid-solid separation media, catalyst carriers, burners, and sound absorption, and environmental protection.

Alumina Ceramic Foam Filter

Reasons for Aluminum Pollution

The quality of the aluminum melt is very important, it greatly affects the subsequent processing performance and the quality of the final product. So the purification of the aluminum melt is an indispensable step.

There are many reasons for aluminum pollution. On the one hand, during the smelting process, aluminum is exposed to the air in a molten or semi-molten state, which is prone to oxidation. It is easy to react with water vapor and absorb hydrogen, and easily form various non-metallic slag (lining fragments, chlorides, carbides in flux) and coarse intermetallic particles. On the other hand, the furnace charge introduces some non-aluminum impurities during circulation. These impurities often cause bubbles and inclusions in the slab, which seriously affect the purity of the metal melt. Thereby they further affect processing performance, mechanical properties, corrosion resistance, and product appearance quality.

Alumina Ceramic Foam Filter Advantages

The foam ceramic filter plates for purifying aluminum liquid have brought great benefits to the stripping foil and its products, such as can blanks, car decorative materials, PS printing plates, etc. For manufacturers of aluminum alloy profiles, there are obvious advantages:
1. Increase extrusion productivity: When using the ceramic filter to purify alloy extrusion blanks, the extrusion speed increases by about 20%, and the productivity increases by nearly 15%.
2. Extend the life of the mold, and reduce the number of repairs.
3. Reduced extrusion force: The extrusion force is more than 3% lower than the unfiltered.
4. Significantly improved the surface quality of aluminum profiles.