Before revision: The general reaction that occurs in the Pidgeon process is: 2MgO*CaO + Si(Fe) -> 2Mg +Ca2SiO4 For industrial use, ferrosilicon is used because its cheaper and more readily available than silicon .
After revision: The general reaction that occurs in the Pidgeon process is: For industrial use, ferrosilicon is used because its cheaper and more readily available in place of pure silicon .