Alu ceramic foam filters combine the pretreatment and re-casting of waste aluminum, and changes the process flow, and avoids air pollution to the greatest extent, greatly improving the recovery rate of net metal.
The CFF filtering device has Alu ceramic foam filters for casting, which allows gas particles to pass through. In the liquefied layer, aluminum precipitates at the bottom, and organic matter such as paint attached to the waste aluminum decomposes into gas, tar, and solid charcoal at 450°C or higher.
Then the combustion is completed by the oxidation device inside the separator. The waste is stirred in a rotating drum and mixed with the dissolved liquid in the bucket. Impurities (such as sand and gravel) are separated into the sand and gravel separation zone, and the dissolved water taken away by the waste returns to the liquefaction bucket to restore the propeller.
According to the preparation and quality status of scrap aluminum materials, and according to the technical requirements of recycled products, select and match and calculate the amount of various materials.
The oxidation and combustion loss of silicon and magnesium is greater than that of other alloying elements. The combustion loss rate of various alloying elements should be determined in advance through experiments.
The physical specifications and surface cleanliness of scrap aluminum will directly affect the quality of recycled products and the actual metal recovery rate.
For waste aluminum that cannot be cleaned of oil, up to 20% of the active ingredients enter the slag. Recycled forged aluminum alloy. Forged aluminum alloys that can be made from scrap aluminum alloys include 3003, 3105, 3004, 3005, 5050, etc., of which 3105 alloy is mainly produced.
In order to ensure that the chemical composition of the alloy material meets the technical requirements and pressure processing requirements, a part of the original aluminum ingot should be added when necessary.
Only a small part of recycled cast aluminum alloy scrap is regenerated into deformed aluminum alloy, and about 1/4 of the regenerated deoxidizer is used for steelmaking, most of which are used for recycled cast aluminum alloy.
In the United States, Japan and other countries, the die-cast aluminum alloy A380, ADC10, etc., which are widely used, are basically recovered from scrap aluminum.
The main equipment of secondary aluminum usually uses a special static furnace with oil or gas.