Method for directly using aluminum and aluminum alloy ash for electrolytic production and recycling

Abstract

The invention relates to aluminum and aluminum alloy ash directly using for an electrolytic production recycling method, comprising the following steps: 1) when the aluminum alloy is melted and matched, adding 0.1-0.2%, based on the total weight of the aluminum alloy, of slagging agent by a nitrogen producing machine when the aluminium alloy is heated to 760-780 DEG C; 2) and standing the aluminum alloy for 10-15 minutes at retained temperature after adding the slagging agent, and then carrying out slag removal; 3) transporting the removed aluminum ash into a residue field and cooling the removed aluminum ash naturally; 4) collecting the aluminum ash when the temperature is reduced to normal temperature; 5) transporting the aluminum ash collected in step 4 to an electrolytic plant, adding the aluminum ash into an electrolytic bath; and 6) transporting the aluminum generated in the electrolytic bath into a smelting furnace to carry out aluminum alloy melting and matching, then continually recycling the aluminum ash generated by the melted and matched aluminum alloy. The invention has simple and convenient process flow, and doses not affect the melting and matching process in later stage; not only saves the cost, but also prevents pollution, really realizes economic recycling, and has significant economic benefits.

Description

technical field [0001] The invention relates to a method for recycling aluminum and aluminum alloy aluminum ash, in particular to a method for directly using aluminum and aluminum alloy ash for recycling in electrolytic production. Background technique [0002] The main components of aluminum and aluminum alloy aluminum ash (hereinafter referred to as aluminum ash) are metal aluminum, aluminum oxide, oxides of iron, silicon, and magnesium, and halides of metals such as potassium, sodium, calcium, and magnesium, among which metal aluminum and aluminum oxide The vast majority. At present, the traditional processing method of casting aluminum ash is to use the method of frying the ash in a large pot to recover the aluminum in it, and a large amount of smoke and dust will be generated during the whole process of frying the ash. This method can only recover the aluminum in the aluminum ash, and for the alumina with a relatively high content, it can be recovered by washing, filte...

AI Technical Summary

Problems solved by technology

The whole process pollutes the environment more seriously

[0003] If the general aluminum ash is recycled by electrolysis, it must be treated in advance (it will also cause considerable pollution to the environment), otherwise it will have an adverse effect on electrolysis production and seriously affect the progress of electrolysis production.