Analysis and control of the inclusions in 3104 aluminum alloy melt with high scrap ratio
3104 aluminum alloy can body is the most proven aluminum product in the re-cycling system at present.Strictly controlling the melt quality in the recycling and melting stage is the key to improve the use ratio of 3104 aluminum scrap.This study focused on 3104 aluminum alloy melt with high scrap ratio produced in an aluminum processing enterprise,conducted offline slag measurement experiments with Prefil-Footprint slag analyzer at differ-ent stages of melting,used metallographic and laser-induced breakdown spectroscopy analy-sis methods to quantitatively and qualitatively evaluate inclusions,then systematically ana-lyzed the effects of scrap ratio,purification process,and deep-bed filtration on inclusions in 3104 aluminum alloy melt.The results show that when scrap ratio is 69.9%～84.8%,the inclusion content can be controlled within 0.01-0.015 mm2/kg Al after in-furnace refi-ning,on-line degassing and deep bed filtration.However,the inclusion content increases with the increase of deep bed filtration.According to the research results,the effective measures to control the inclusion content of 3104 aluminum alloy melt with high scrap ratio are put forward,which provide a basis for optimizing the aluminum melt purification process with high scrap ratio.
NETL
NSTL
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