Practices for Reducing Non-Metallic Impurities in 3N Aluminum Ingots

Li Hong¹* and Chen Shengtang^2
1Guangxi Laibin GIG Yinhai Aluminum Co., LTD., Laibin 546100,Guangxi, China
²Guangxi Guangtou High Purity Aluminum Technology Co., Ltd., Laibin 546100,Guangxi, China
*Corresponding Author: Li Hong, Guangxi Laibin GIG Yinhai Aluminum Co., LTD., Laibin 546100,Guangxi, China.

Published: April 16, 2025

DOI: 10.55162/MCET.08.272

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Abstract  

3N aluminum is widely used in the power, electronics, and construction industries, with increasing demands for higher quality. During aluminum smelting and casting, the infiltration of non-metallic impurities such as hydrogen and oxygen significantly affects material properties. This study addresses the impact of the high-temperature, high-humidity environment in southern China on the impurities in 3N aluminum ingots. It suggests that through equipment upgrades, process optimization, and production management improvements, non-metallic impurities in the ingots can be reduced. Specifically, oxygen and hydrogen impurity levels were reduced by 0.0021% and 0.0004%, respectively. These measures significantly enhanced the purity of 3N aluminum, ensuring the supply meets the high-end aluminum market’s requirements.

Keywords: 3N aluminum ingots; Non-metallic impurities; Refining process; Equipment upgrades; Process optimization; Impurity control

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