How should waste aluminum be turned into aluminum ingots

The recycling of waste has always been an important problem for factories and enterprises, and the recycling of waste aluminum to produce aluminum ingot is also an important step in aluminum production at present. Today, let's talk about how to produce aluminum ingots from waste aluminum.

One: aluminum alloy regeneration production typical process

Recycled aluminum is the main raw materials such as recycled waste aluminum parts or scraps and waste aluminum wire in the process of producing aluminum products, which is produced by smelting and meets the requirements of various standards of aluminum ingot.

Two: recycled aluminum raw material composition and pretreatment

1. Imported waste aluminum

In recent years, a large amount of waste aluminum has been imported from abroad. As far as the components of imported waste aluminum are concerned, most of them are mixed except a few clearly classified. Generally can be divided into the following categories:

① Single variety of waste aluminum

Such waste aluminum is generally a kind of waste parts, such as the piston of internal combustion engine, automobile reducer case, automobile wheel, automobile front and rear safety, aluminum doors and Windows, etc.. These waste aluminum has been clearly classified when imported, single variety, and are imported in batches, so it is high quality recycled aluminum raw materials.

② Slice waste mixed aluminum

Waste miscellaneous aluminum slice, also referred to as slice, is a higher grade of waste miscellaneous aluminum. The reason why it is called slice, because many developed countries in the processing of scrap cars, waste equipment and all kinds of waste household appliances, are using mechanical whirling method to break it into scraps, and then mechanized sorting, sorting out the waste aluminum is waste aluminum slice.

③ Mixed waste aluminum materials

Such miscellaneous scrap aluminum composition is complicated, a variety of shapes and physical except miscellaneous scrap aluminum, also contains a certain amount of iron and steel scrap, scrap metals such as lead, zinc scrap and waste rubber, waste wood, waste plastics, stone, etc., sometimes part of the scrap aluminum and scrap machine together, such waste composition is complicated, a small amount of aluminium scrap, more surface clear, and easy separation. Before smelting, such waste must be pre-sorted out by hand to remove scrap steel and other impurities.

(4) The broken aluminum containing aluminum after incineration

This kind of aluminum material is a lower grade of aluminum containing waste, mainly a variety of scrap household appliances such as pulverized material, separated from a part of the scrap after incineration formed materials.

⑤ Mixed scrap aluminum material

This kind of waste is the lowest grade of waste aluminum, its composition is very complex, including all kinds of waste aluminum in 40% ~ 50%, the rest is scrap iron and steel, a small amount of lead and copper, a large number of garbage, stone and soil, waste plastic, waste paper, etc., soil about 25%, scrap steel 10% ~ 20%, stone 3 ~ 5%.

2, domestic recycling scrap aluminum material

Most of the waste mixed aluminum recycled in China is pure and basically does not contain impurities (except artificial doping). It can be divided into three categories, namely waste cooked aluminum, waste raw aluminum and waste alloy aluminum, which is often said by the recycling department. Waste raw aluminum is mainly waste casting aluminum and waste alloy aluminum. Mostly used waste machine parts (such as waste car parts, waste molds, waste cast aluminum POTS, internal combustion engine piston, etc.). Waste cooked aluminum generally refers to waste aluminum content in 99% or more (such as waste cable, waste household tableware, kettle, etc.). Scrap alloy aluminum (e.g. scrap aircraft aluminum, aluminum frame, etc.). In terms of the production sector, it can be divided into life waste aluminum and industrial waste aluminum.

3, the smelting of recycled aluminum

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