Solids injection lance
AssigneeTata Steel Limited
InventorsJacques Pilote, Rodney James Dry, Mark Preston Davis
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Abstract
A method for injecting a solid feed material through a solids injection lance includes creating flow conditions in an injection passageway of the lance so that at least a part of the feed material flowing along the passageway forms a buffer zone between a wall of a tube that defines the passageway and feed material flowing along a central section of the passageway.
Claims15
A method for injecting solid metalliferous material and solid carbonaceous material that includes injecting a solid metalliferous material via a metalliferous material inlet into a passageway extending from a rearward end to a forward end of a lance and creating a flow of metalliferous material along the lance, and injecting solid carbonaceous material in a direction that is transverse to a direction of movement of the metalliferous material via a carbonaceous material inlet into the passageway downstream of the metalliferous material inlet to the passageway so that at least a part of the carbonaceous material forms a buffer zone between a wall of a tube that defines the passageway and the metalliferous material flowing along the passageway.
A solids injection lance that includes a tube that defines a passageway for solid metalliferous material and solid carbonaceous material to be injected through the tube and has a rear inlet for solid metalliferous material at a rear end, a separate tube wall inlet arranged transversely to the rear inlet, for solid carbonaceous material injection in a direction that is transverse to a direction of movement of the solid metalliferous material injected at the rear inlet, in a wall of the tube downstream of the rear inlet, and an outlet for discharging solid feed material at a forward end, and wherein at least a part of the carbonaceous material forms a buffer zone between a wall of a tube that defines the passageway and metalliferous material flowing along the passageway.
Dependencies are inferred from the claim text.