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

Inactive Publication Date: 2012-09-05
赵凯志
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0002] With the rapid development of aluminum alloy deep processing enterprises, aluminum alloy processing enterprises have produced a large amount of processing residues and waste aluminum scraps in the process of production and processing. These processing residues and scrap aluminum scraps are usually treated by enterprises as industrial w...

Method used

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Embodiment Construction

[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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PUM

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Abstract

The invention discloses an aluminum alloy wheel hub cutting scrap recycling and smelting process and belongs to the technical field of new materials. The aluminum alloy wheel hub cutting scrap recycling and smelting process includes the following steps: (1) pretreatment: after impurity removal, drying, smashing and magnetic separation, adding cutting scraps produced in the machining process of aluminum alloy wheel hubs in an aluminum scrap recycling furnace for melting; (2) refinement: blowing a refining agent into a melting chamber through nitrogen for refining when the temperature in the furnace reaches 720-750 DEG C; (3) modification and double-refinement: adding aluminum-strontium bars and mixed rare earth in a tempering chamber for compound modification and double-refinement treatment of molten aluminum alloy entering the tempering chamber; (4) degassing: blowing nitrogen into the tempering chamber through a porous plug for degassing; and (5) filtering and deslagging: adding a fluxing medium in molten aluminum for fluxing, and adopting a foamed ceramic filter disc for purifying the molten aluminum alloy flowing to a using chamber and preserving heat for later use.

Description

technical field [0001] The invention belongs to the field of new materials-metallurgy, and in particular relates to a recycling and smelting process of aluminum alloy wheel hub cutting chips. Background technique [0002] With the rapid development of aluminum alloy deep processing enterprises, aluminum alloy processing enterprises have produced a large amount of processing residues and waste aluminum scraps in the process of production and processing. These processing residues and scrap aluminum scraps are usually treated by enterprises as industrial waste, which pollutes the environment. , and caused a great waste of resources. Even though some enterprises recycle processing chips, due to the complex composition, immature recycling process, low recovery rate, and large smoke and dust during melting, the recycling cost is high and it is easy to cause a series of problems such as secondary pollution. Contents of the invention [0003] The object of the present invention i...

Claims

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Application Information

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IPC IPC(8): C22B7/00C22C21/00C22C1/02C22C1/06
CPCY02P10/20
Inventor 赵凯志
Owner 赵凯志
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