How to reduce the burning loss of cast aluminum?
The burning loss of cast aluminum is the irreversible loss caused by oxidation and other factors in the production process of aluminum and aluminum alloys.
For an aluminum plant with an annual output of 200,000 tons, if the burning loss is reduced by 1‰, 200 tons of aluminum products can be produced without increasing investment.
Therefore, it is very important to reduce the burning loss. This article will analyze the causes of burning loss and the methods and ways to effectively reduce the burning loss.
Factors affecting casting oxidation burning loss include aluminum liquid brought out by aluminum ash during slag removal,
too high casting temperature of aluminum liquid,
too long insulation time of aluminum liquid in the insulation furnace, turbulence caused by disturbance of aluminum liquid during casting,
oxidation slagging caused by the formation of a new liquid surface of aluminum liquid, aluminum loss caused by secondary furnace caused by incorrect ingredients and unqualified aluminum ingots.
In order to reduce casting burning loss, the following methods can be taken:
Recycle scrap aluminum or oily aluminum ingots to prevent them from burning after entering the furnace.
Use slag remover correctly to control the excessive aluminum liquid brought out during slag removal.
Install aluminum ash separator to effectively separate metallic aluminum from high-temperature aluminum ash.
Control the casting temperature of aluminum liquid to avoid oxidation and burning caused by excessive temperature.
Use continuous casting to reduce the contact time and area between aluminum liquid and oxygen, effectively reducing the output of scrap aluminum.
Reduce liquid surface disturbance to prevent aluminum liquid from contacting with air and reduce oxidation and burning.
In short, by strictly controlling process technology and taking corresponding measures, the burning of cast aluminum can be effectively reduced and the economic benefits of the enterprise can be improved.