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    31.
    发明专利
    未知

    公开(公告)号：BRPI0415680A

    公开(公告)日：2006-12-19

    申请号：BRPI0415680

    申请日：2004-10-16

    Applicant: TECH RESOURCES PTY LTD ,  OUTOKUMPU OY

    Inventor： ORTH ANDREAS ,  LEIGH DAVI JOHN ,  BURKE PETER DAMIAN

    IPC: C21B5/02 ,  C21B13/00 ,  C21B13/14 ,  C21C5/56 ,  F27B3/18 ,  F27D13/00

    Abstract: A direct smelting plant for producing molten metal from metalliferous feed material includes a pretreatment unit for pretreating metalliferous feed material and producing pretreated feed material, a direct smelting vessel for smelting pretreated metalliferous feed material to molten metal and a hot feed material transfer apparatus for transferring pretreated metalliferous feed material from the pretreatment unit to a solids delivery device of the direct smelting vessel. The transfer apparatus includes a hot feed material storage device, a hot feed material transfer line, device for unblocking the hot feed material transfer line and a pressurising device. The hot feed material transfer apparatus includes a device for returning pretreated metalliferous feed material to the pretreatment unit.

    A DIRECT SMELTING PROCESS AND APPARATUS
    38.
    发明专利
    A DIRECT SMELTING PROCESS AND APPARATUS 未知

    公开(公告)号：CA2405966A1

    公开(公告)日：2001-11-01

    申请号：CA2405966

    申请日：2001-04-11

    Applicant: TECH RESOURCES PTY LTD

    Inventor： DRY RODNEY JAMES ,  BURKE PETER DAMIAN

    IPC: C22B5/00 ,  C21B11/00 ,  C21B11/02 ,  C21B13/00

    Abstract: A molten-bath based direct smelting process and apparatus for producing meta ls from a ferrous material is disclosed. The process includes injecting feed materials being solid material and carrier gas into a molten bath at a velocity of at least 40m/s through at least one downwardly extending solids injection lance having a delivery tube of internal diameter of 40-200mm that is located so that a central axis of an outlet end of the lance is at an ang le of 20 to 90 degrees to a horizontal axis. The feed materials injection generates a superficial gas flow of at least 0.04 Nm3/s/m2 within the molten bath at least in part by reactions of injected material in the bath. The gas flow causes molten material to be projected upwardly as splashes, droplets a nd streams and form an expanded molten bath zone, with the gas flow and the upwardly projected molten material causing substantial movement of material within the molten bath and strong mixing of the molten bath. The feed materials are selected so that, in an overall sense, the reactions of the fe ed materials in the molten bath are endothermic. The process also includes 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.

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