Device and method for manufacturing aluminum casting by recycling waste aluminum material

Abstract

The invention provides a device and a method for manufacturing an aluminum casting by recycling a waste aluminum material, and aims to solve the technical problems that the quality of the casting is influenced by excessive impurities in the existing waste aluminum material and the smelting efficiency is low. The device comprises a conveying mechanism, an impurity removal and crushing device, a dehydration and oil removal mechanism, a preheating furnace, a melting furnace and a column pressing device. The method for manufacturing the aluminum casting by recycling the waste aluminum material comprises the following steps: (1) preliminarily removing impurities; (2) secondarily removing the impurities; (3) performing dehydration and oil removal; (4) performing preheating; (5) performing smelting; and (6) performing pouring. In a waste aluminum material conveying process, the waste aluminum material is subjected to pretreatment preliminary impurity removal firstly and then subjected to secondary deep impurity removal after being crushed, so that iron-containing substances entering the melting furnace are greatly reduced, and the quality of aluminum casting is effectively improved. Meanwhile, before the impurity-removed aluminum material enters the melting furnace, the aluminum material is preheated and heated by the preheating furnace, so that the heating speed of the aluminum material in the melting furnace is shortened, and therefore, the melting efficiency is further improved.

Description

technical field [0001] The invention relates to the technical field of waste aluminum smelting, in particular to a device and method for recycling waste aluminum to manufacture aluminum castings. Background technique [0002] Aluminum is widely used in industry. With the increase of aluminum output and usage, there are more and more waste aluminum products. Scrap aluminum is a common name for recycled aluminum. Scrap aluminum can reproduce its excellent properties after remelting, refining, purification and adjusting chemical composition. It is an important source of metal aluminum. Among them, in the smelting process of waste aluminum, iron impurities are very harmful to the smelting of waste aluminum. When there is too much iron, brittle metal crystals will be formed in aluminum, thereby reducing its mechanical properties and weakening its corrosion resistance. If Failure to remove impurities in scrap aluminum in advance will seriously affect the quality of smelting scrap...

AI Technical Summary

Problems solved by technology

Among them, in the smelting process of waste aluminum, iron impurities are very harmful to the smelting of waste aluminum. When there is too much iron, brittle metal crystals will be formed in aluminum, thereby reducing its mechanical properties and weakening its corrosion resistance. If Failure to remove impurities in scrap aluminum in advance will seriously affect the quality of smelting scrap aluminum

In the prior art, the waste aluminum is only poured into the smelting furnace after simple pretreatment and removal of impurities, without deep removal of impurities, which affects the quality of aluminum castings; at the same time, the aluminum material is directly processed without preheating Smelting, making smelting inefficient

Images