This work presents a silicon metal analysis proposal for the slag from Iron-Silicon production. It quantifies the hydrogen liberated by the sample’s reaction with sodium hydroxide and reads the mercury column displacement in a closed system. The obtained value is compared with the displacement of a reference sample. The proposed method was compared with a traditional gravimetric method that is based on the same method, but where sodium hidroxide is quantified when the silicate acid formed in the reaction is transformed into silica. The results showed that the proposed method had a high correlation with the gravimetric method, but at alower cost and quicker performance. A Detection Limit of 0.177% and a Quantification Limit of 0.574% were observed, of which both were satisfactory for this aim.
Silicon; detection limit; quantification limit
