|About this Abstract
||2018 TMS Annual Meeting & Exhibition
||Solar Cell Silicon
||Boron Removal from Ferrosilicon Alloy via Slag Treatment
||Ali Hosseinpour, Leili Tafaghodi
|On-Site Speaker (Planned)
In a new approach to metallurgical refining of silicon, a combination of slag treatment and solvent refining is used in order to remove boron from silicon. In this process, silicon is initially alloyed with iron (as a solvent metal) to produce an alloy of 80% Si-20% Fe. Various compositions of Al2O3-SiO2-CaO slag were used to find the optimum composition for boron removal. The partition ratio of boron between the slag and Si-Fe alloy at 1873 K (1600 ○C) was determined using the B concentrations obtained by ICP-OES.