Evaluation of the Possibilities of Occurrence of Harmful Effects Caused by Some Ferroalloys used in the Metallurgical Industry on the Environment

• Main Author: Vasile BAȘLIU
• Format: Article
• Language: English
• Published: Galati University Press 2019-12-01
• Series: The Annals of “Dunarea de Jos” University of Galati. Fascicle IX, Metallurgy and Materials Science
• Subjects: FeSi with 45% Si; pH; aqueous extract; harmfulness; chemically active surfaces
• Online Access: https://www.gup.ugal.ro/ugaljournals/index.php/mms/article/view/2813

The raw materials of the metallurgical industry have an important chemical reactivity and when they come in contact with the environment, they can generate effects that in most cases are harmful. Chemical reactions from the solid / liquid interface showed a chemically active environment which caused the formation of reaction products with a certain degree of environmental damage. The paper aimed to address the interaction between some coarse (0.8 mm) and fine (0.04 mm) ferro-alloys (FeSi with 45% Si) with a physical simulation medium - distilled water for the possible determination of a change of pH. For this purpose, chemical composition determinations were made by the EDX method and the morphological characterization of the surfaces by the SEM electron scanning method. Also, pH measurements were made on different granulations and quantities of FeSi45.