Direct reduction process using a single fluidised bed

Abstract From the Canadian patent

A direct reduction process for a metalliferous material comprises supplying the metalliferous material, a solid carbonaceous material an oxygen-, containing gas, and a fluidising gas into a fluidised bed in a vessel and maintaining the fluidised bed in the vessel at least partially reducing , metalliferous material in the vessel and discharging a product stream that comprises the at least partially reduced metalliferous material from the vessel. The process is characterised by: (a) reducing the metalliferous material in a solid state in a metal-rich zone in the vessel; (b) injecting the oxygen-containing gas into a carbon-rich zone in the vessel with a downward flow in a range of …