Whole-sealed aluminum alloy online refining device

Abstract

Disclosed is a whole-sealed aluminum alloy online refining device which belongs to the technical field of aluminum alloy online refining. The refining device is characterized in that a box body is formed by an outer heat preservation layer (9) and an inner heat preservation layer (8), a sealed cavity is jointly formed by a furnace cover (20) on the upper portion of the box body and the box body, an aluminum liquid inlet (2) and an aluminum liquid outlet (3) are respectively arranged on the cavity, a partition wall (10) is arranged inside the box body, a space is preserved between the partition wall and the lower portion of the cavity; a heating bar (6) is disposed on the upper portion of the box body, a cover gas inlet (5) communicated with a nitrogen pipeline (12) is disposed on the wallof the furnace cover (20), a gas permeable brick (7) communicated with a security gas source (14) is arranged at the lower end of the box body. Under the combining action of a refining furnace for refining aluminum liquids of electrolytic aluminums, a security system when the refining furnace is interrupted to produce gases and a warning system capable of giving an alarm when the refining furnaceis interrupted to produce gases, the refining device has the advantages of safety, reliability, simple and practical properties, less investment and maintenance and excellent gas removing effect.

Description

【Technical field】 [0001] The invention belongs to the technical field of aluminum alloy on-line refining, and in particular relates to a fully-sealed aluminum alloy on-line refining device. 【Background technique】 [0002] It is well known that as users have higher and higher requirements for the quality of deep processing of aluminum, the hydrogen content in molten aluminum is the main reason affecting the quality of aluminum products, because the raw materials used in electrolytic aluminum (Al2O3 and AlF3, etc.) have good water absorption Performance, after the carried water enters the electrolyte, it either undergoes a hydrolysis reaction with fluoride salt, or is electrolyzed into hydrogen and oxygen, and the precipitated hydrogen enters the aluminum liquid through diffusion and Al2O3 parasitic mechanisms, which is the main source of hydrogen in the electrolytic aluminum liquid source. The hydrogen produced by the reaction of water and aluminum enters the aluminum liquid...

AI Technical Summary

Problems solved by technology

In production practice, we found that this device has the following problems: 1. The system is poorly sealed, and the surface of the melt is easily oxidized

2. High failure rate and high maintenance cost of rotating machinery

3. The consumption of graphite rotor is large, and the production cost is relatively high

4. Graphite powder pollutes the melt

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