F. Margarido, M. O. Figueiredo
Silicon with high purity and fine particle size can be produced by acid leaching of Fe-Si industrial alloys under adequate chemical and structural conditions. The study synthesizes alloys within the quaternary system Fe-Si-Ca-Al, focusing on the phase constitution for optimization. The leaching experiments were performed using hydrochloric acid (HCl) at concentrations of 150 and 220 g/L, consistently maintaining a temperature of 102 °C under atmospheric conditions. Results showed that maximizing the Caalsifer plus Al-Fe-Si phases while minimizing the FeSi2 phases is crucial. This can be achieved by carefully controlling the Al/Ca and Fe/Si concentration ratios during the synthesis process. The findings contribute to developing an industrial process for obtaining high-grade silicon with a purity of 99.9%, addressing challenges associated with existing impurity phases in metallurgical grade silicon. This approach holds potential for enhancing the efficiency and effectiveness of purification methods for silicon used in various industrial applications.
@article{a76d22ea-35d9-409a-bfa5-8712973bdb7d,
title={Acid Leaching of Alloys within the Quaternary System Fe-Si-Ca-Al},
author={F. Margarido and M. O. Figueiredo},
year={1997},
language={pt}
}TY - JOUR TI - Acid Leaching of Alloys within the Quaternary System Fe-Si-Ca-Al AU - F. Margarido AU - M. O. Figueiredo PY - 1997 LA - pt ER -
Blair Burwell
The exhaustion of current vanadium sources and the emergence of new applications are driving the need for innovative methods of extraction. The aim of
Rajesh Jha, Bimal Kumar Jha
This book describes the application of artificial intelligence (AI) and machine learning (ML) concepts to develop predictive models that can be used t
H. W. Rosenberg
Halide metallurgy serves as a critical method for both the extraction of metals from ores and the subsequent refinement to achieve high purity levels.