What is the filtering principle of Foam Furnace Filters? By the gap? wrong!
The ceramic filter plate is a new type of filter plate made of industrial sponge as a carrier, filled with heat-resistant ceramics, and then sintered.
When the ceramic filter plate filters the aluminum liquid, the aluminum liquid flows through the tortuous holes of the ceramic filter plate, and the non-metallic impurities and oxide film (commonly known as slag) in the aluminum liquid are affected by the axial pressure, friction, and surface adsorption of the aluminum liquid. The combined effect of the slag is retained on the inner surface of the hole and the crevice of the ceramic filter plate, thereby separating the slag and the molten aluminum.
After a period of filtering, the slag remaining on the ceramic filter plate also participates in the adsorption of the slag, which can play a filtering role.
Since the performance of the slag adsorbed on the ceramic filter plate and the slag to be adsorbed in the aluminum liquid are exactly the same, the surface area ratio is much larger than that of the ceramic filter plate, and the surface activity is much greater than that of the Foam Furnace Filter, so the ability to adsorb and trap the slag in the aluminum liquid is far Much larger than the ceramic filter plate.
Because of this, the ceramic filter plate can filter out the fine slag that is many times smaller than its own hole.
During the filtration process, the slag adsorbed on the Foam Furnace Filters gradually grows up after adsorbing and trapping the slag in the molten aluminum.
Under the agitation and scouring of the liquid flow, the extremely low-strength slag may break or fall off the ceramic filter plate.
In the process of slag falling off, if the ceramic filter plate is thicker or has small holes, it may be intercepted or adsorbed again.
An aluminum factory in Shanxi commented
Since our factory uses AdTech ceramic filter plates to filter molten aluminum, hard impurities such as alumina slag in the ingot have been greatly reduced, the continuity of the metal has been improved, the mechanical properties have been improved, the yield rate of extruded profiles has been steadily improved, and the service life of the mold has also been greatly enhanced. The injury reduction has brought better economic benefits to our factory.
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