Molten aluminum impurity removal device for waste aluminum recovery and implementation method thereof

Abstract

A molten aluminum impurity removal device for waste aluminum recovery comprises a bottom plate, two sets of supporting columns are fixedly connected to the upper end of the bottom plate, an impurity removal box is fixedly connected to the upper ends of the supporting columns, filter plates are hinged to the lower end of a partition plate in a bilateral symmetry mode, a rotating assembly is arranged on the lower side of a hollow shaft, a gas inlet assembly is connected to the bottom of the hollow shaft, and the side wall of the upper portion of the hollow shaft communicates with multiple hollow stirring rods. A slag salvaging assembly is arranged in the upper side of the impurity removal box. An impurity removal agent and molten aluminum are mixed to remove condensed impurities; meanwhile, nitrogen is discharged into the molten aluminum through a gas inlet assembly, the impurity removal aim is achieved, and the impurity removal effect is good; and the hollow stirring rods are driven by the rotating assembly to rotate, the molten aluminum is stirred and mixed, and the impurity removal effect is improved. By means of the slag salvaging assembly, impurities floating on the surface of the molten aluminum can be taken away through a slag salvaging plate, manual skimming is not needed, time and labor are saved, and potential safety hazards are avoided. The molten aluminum is further filtered and subjected to impurity removal through the filter plates, the filter plates vibrate in a reciprocating mode, the filter effect is improved, and the impurities are prevented from being accumulated on the filter plate.

Description

technical field [0001] The invention relates to the technical field of waste aluminum recycling and processing equipment, in particular to a device for removing impurities from aluminum liquid used for recycling waste aluminum and an implementation method thereof. Background technique [0002] Aluminum is a metallic element, a silvery-white light metal that is malleable. Commodities are often made into rods, flakes, foils, powders, ribbons and filaments. In humid air, an oxide film can be formed to prevent metal corrosion. Aluminum powder can burn violently when heated in the air, and emit a blinding white flame. The content of aluminum in the earth's crust is second only to oxygen and silicon, ranking third, and is the most abundant metal element in the earth's crust. The development of the three important industries of aviation, construction, and automobile requires that the material properties have the unique properties of aluminum and its alloys, which greatly facilit...

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Problems solved by technology

[0003] At present, when waste aluminum is recycled and processed into aluminum liquid, there are certain impurities and hydrogen in the aluminum liquid. Without impurity removal treatment, impurities and pores will be included in the subsequent processed products, which will have a great impact on the performance of aluminum and its alloys.

In the prior art, the conventional method is to add nitrogen and impurity remover to the molten aluminum to float the impurities through nitrogen, or to filter the impurities through a simple filter, but the impurity remov

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