Aluminum alloy wheel hub cutting scrap recycling and smelting process
A technology of aluminum alloy wheels and aluminum alloy melt, which is applied in the direction of improving process efficiency, can solve the problems of high recycling cost, low recycling rate, environmental pollution, etc., and achieve the effect of improving purity and improving mechanical properties
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[0011] (1) Pretreatment: In order to facilitate transportation and iron removal, the aluminum scraps are first cut and broken, and then dried in an inclined converter. The aluminum scraps are added from the upper end and heated with a burner inside to evaporate the oil and water. The heating temperature is controlled at 150-200°C. The dried aluminum shavings are removed by electromagnets on the belt conveyor. In order not to cause secondary pollution, a secondary combustion device and a dust collector are added to the drying converter to burn off the incompletely combusted gas and dust in the exhaust gas formed in the dryer.
[0012] (2) Refining: In order to reduce the oxidation of aluminum chips, a hydraulic transmission device is used to press aluminum chips into aluminum water before they have time to oxidize, so as to isolate them from the air. When the temperature in the furnace reaches 720--750°C, the refining agent is blown into the melting chamber through nitrogen fo...
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