Manufacturing of Al-Zr-Si master alloy from zircon concentrate

Huynh Cong Khanh; Ly Thai Phap; Do Thanh Toan

doi:10.15625/2525-2518/18562

Author affiliations

Authors

Huynh Cong Khanh 1Faculty of Materials Technology, Ho Chi Minh City University of Technology (HCMUT), 268 Ly Thuong Kiet Street, District 10, Ho Chi Minh City, Vietnam 2Vietnam National University Ho Chi Minh City, Linh Trung Ward, Thu Duc City, Ho Chi Minh https://orcid.org/0009-0001-7830-1183
Ly Thai Phap 1Faculty of Materials Technology, Ho Chi Minh City University of Technology (HCMUT), 268 Ly Thuong Kiet Street, District 10, Ho Chi Minh City, Vietnam 2Vietnam National University Ho Chi Minh City, Linh Trung Ward, Thu Duc City, Ho Chi Minh
Do Thanh Toan 1Faculty of Materials Technology, Ho Chi Minh City University of Technology (HCMUT), 268 Ly Thuong Kiet Street, District 10, Ho Chi Minh City, Vietnam 2Vietnam National University Ho Chi Minh City, Linh Trung Ward, Thu Duc City, Ho Chi Minh

DOI:

https://doi.org/10.15625/2525-2518/18562

Keywords:

Al-Zr-Si master alloy, thermal-resistant aluminum alloy, zircon concentrate

Abstract

Aluminum alloy of thermal-resistant aluminum alloy wire for overhead line conductors usually contains zirconium, silicon, iron, and other components. Hence, Al-Zr-Si master alloy can be used to produce thermal-resistant aluminum alloy. In this study, the manufacturing procedure of Al-Zr-Si master alloy from zircon concentrate has been introduced. The zircon concentrate was thoroughly mixed with different amounts of KCl and Na₂SiF₆ or Na₃AlF₆, then sintered in the electric muffle furnace at 700^oC for 2 hrs with automatic temperature control. The sinter was premixed with Na₃AlF₆ at the 1:1 ratio and dried at 140-160^oC to remove the humidity. The powder mixture was added to the aluminum molten at 1200^oC and then stirred well to ensure proper powder mixing in the melt. After the finish reaction and slag skimming, the melt was taken out of the furnace and poured into the mold. The master alloy was characterized by a Spectrometer, ICP-OES, and optical microscopy.

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