公开(公告)号：JP2001226708A

公开(公告)日：2001-08-21

申请号：JP2001018779

申请日：2001-01-26

Applicant: TECH RESOURCES PTY LTD

Inventor： MARTIN JOSEPH DAN

IPC: C22B9/10 ,  C21B11/08 ,  C21B13/10 ,  C21C5/46 ,  C21C5/52 ,  C21C5/56 ,  C21C7/00 ,  C22B5/10 ,  F27B3/00 ,  F27B3/02 ,  F27B3/18 ,  F27B3/22 ,  F27D3/00 ,  F27D3/15 ,  F27D3/16 ,  F27D3/18 ,  F27D99/00

Abstract: PROBLEM TO BE SOLVED: To provide a metallurgical lance for injecting solid particulate materials into a smelting vessel. SOLUTION: This lance 27 has a central tube 31 allowing the passage of the solid materials and an annular cooling jacket 32 enclosing the central tube. The jacket 32 includes a long-sized annular structure 41 which is formed by outer and inner tubes 42 and 43 connected by a front end connector 44. A long- sized annular structure 45 is disposed in the structure 41 in order to divide the inside of the structure 41 to the inner side annular water passage 46 and the outer side outer side annular water passage 47. A long-sized annular structure 45 has a front end piece 49 fitted into the connector 44 of the structure 41 in order to form an annular end passage 51 for interconnecting the front ends of water passages 46 and 47. Cooling water flows forward through the water passage 46 and further flows outward around the passage 51 toward the outer passage 47 then to a water outlet 53 side. The effective sectional area of the water flow passing the passage 51 is smaller than the flow sectional area of the water passage 46 and 47 in order to obtain the high volume of the water in the front end region of the cooling jacket.

公开(公告)号：JP2001289571A

公开(公告)日：2001-10-19

申请号：JP2001057464

申请日：2001-01-25

Applicant: TECH RESOURCES PTY LTD

Inventor： GURR MATTHEW JOHN ,  MARTIN JOSEPH DAN

IPC: C21B13/02 ,  B22D41/02 ,  F27B1/16 ,  F27B1/21 ,  F27B1/24 ,  F27B3/12 ,  F27B3/14 ,  F27D1/12 ,  F27D1/16

Abstract: PROBLEM TO BE SOLVED: To reline a vessel efficiently. SOLUTION: In a method of relining a vessel that is used to carry out a direct smelting process that produces molten metal under conditions requiring molten bath temperature of at least 1000 deg.C, the vessel is of the type that has a floor that is refractory lined, a side wall that is at least partially refractory lined, a top wall, and at least two access openings to the interior of the vessel. The relining method includes the steps of cooling down the vessel after stopping direct smelting work, gaining access to the interior of the vessel via the access openings, relining the vessel, and restarting operation of the process in a period of time of 21 or less days. The vessel is of the type that has floors 45, 47, 49 that are refractory lined, a side wall 5 that is at least partially refractory lined, a top wall 7, and at least two access openings to the interior of the vessel. The relining method includes the works of cooling down the vessel in a period of time of 21 or less days, gaining access to the interior of the vessel via the access openings, relining the vessel, and restarting operation of the process.

公开(公告)号：JP2001234231A

公开(公告)日：2001-08-28

申请号：JP2001021868

申请日：2001-01-30

Applicant: TECH RESOURCES PTY LTD

Inventor： MARTIN JOSEPH DAN

IPC: C21B5/00 ,  C21B13/00 ,  C21C5/46 ,  C21C5/56 ,  C21C7/072 ,  C22B5/10 ,  C22B9/05 ,  F27B3/22 ,  F27D3/16 ,  F27D3/18 ,  F27D9/00

Abstract: PROBLEM TO BE SOLVED: To provide a lance structure which is usable at an extremely high temperature by cooling component parts with water from the inside. SOLUTION: The device for injecting gas into a vessel includes a lance 26 having a gas flow extending duct 31 which extends in a longitudinal direction from rear end to a front end 36 where the gas is released. Swirling flow imparting vanes 39 are disposed at an extending body 38 arranged within the front end of the duct in order to impart swirling to the released gas. A front end member 44 is cooled from the inside by the water flowing through supply reflux paths 52 and 56. The cooling water flows in internal cooling water paths 66, 75, 76 and 87 within the vanes 39 and the central extending body 38 through the water supply reflux path 60 of the duct.