Patent ID: 6989042
Filing Date: 2006-01-24
Classification: C21B,Y02P

Abstract:
1. A direct smelting process for producing metals which term includes metal alloys from a ferrous material which includes the steps of: (a) forming a bath of molten metal and molten slag in a metallurgical vessel; (b) injecting feed materials being solid material and carrier gas into the molten bath at a velocity of at least 40 m/s through a downwardly extending solids injection lance having a delivery tube of internal diameter of 40–200 mm that is located so that a central axis of an outlet end of the lance is at an angle of 20 to 90 degrees to a horizontal axis and generating a superficial gas flow of at least 0.04 Nm (c) injecting an oxygen-containing gas into an upper region of the vessel via at least one oxygen gas injection lance and post-combusting combustible gases released from the molten bath, whereby ascending and thereafter descending molten material in the expanded molten bath zone facilitate heat transfer to the molten bath.