公开(公告)号：EP2210959A4

公开(公告)日：2012-11-21

申请号：EP08831779

申请日：2008-09-18

Applicant: KOBE STEEL LTD

Inventor： FUJIMOTO HIDEAKI ,  MIMURA TSUYOSHI ,  MIYAHARA ITSUO ,  HARADA TAKAO ,  TATEISHI MASATAKA ,  SUGITATSU HIROSHI

IPC: C21B11/10 ,  C21C5/54 ,  F27B3/08

CPC classification number: F27B3/08 ,  C21B11/10 ,  C21B13/004 ,  C21B13/008 ,  C21C7/0025 ,  C21C7/0087 ,  C21C7/072 ,  C21C2007/0062 ,  Y02P10/136

公开(公告)号：EP2172726A4

公开(公告)日：2013-10-30

申请号：EP08777468

申请日：2008-06-20

Applicant: KOBE STEEL LTD

Inventor： SUGITATSU HIROSHI ,  HARADA TAKAO ,  FUJIMOTO HIDEAKI

IPC: F27D17/00 ,  C21B13/10 ,  C22B7/02 ,  F27B9/18 ,  F27B9/30

CPC classification number: F27D17/008 ,  C21B13/105 ,  C21C2100/06 ,  C22B1/216 ,  C22B7/02 ,  F27B9/16 ,  F27B9/3044 ,  F27D17/001 ,  F27D17/004 ,  F28D7/106 ,  F28D21/001 ,  F28F13/18 ,  F28F19/00 ,  F28F19/02 ,  Y02P10/136 ,  Y02P10/212

公开(公告)号：EP2172571A4

公开(公告)日：2012-03-28

申请号：EP08764573

申请日：2008-05-23

Applicant: KOBE STEEL LTD

Inventor： HARADA TAKAO ,  SUGITATSU HIROSHI

IPC: C22B1/244 ,  B30B11/16 ,  C22B1/248

CPC classification number: C22B1/245 ,  B30B11/16 ,  B30B15/308 ,  C22B1/248 ,  C22B7/02 ,  Y02P10/234

公开(公告)号：EP1939565A4

公开(公告)日：2008-12-31

申请号：EP06811489

申请日：2006-10-10

Applicant: KOBE STEEL LTD

Inventor： TETSUMOTO MASAHIKO ,  HASHIMOTO SUMITO ,  SUGITATSU HIROSHI

IPC: F27B9/34 ,  F27B9/18 ,  F27D1/04 ,  F27D1/14

CPC classification number: F27B9/34 ,  F27B9/16 ,  F27B9/18 ,  F27D1/04 ,  F27D1/14

Abstract: [PROBLEMS] To provide a rotary hearth furnace which is of a general-purpose type, which can properly determine a thermal expansion tolerance in the rotary hearth furnace, and has a simple hearth structure which does not cause any damage to the hearth even after long-term operation. [MEANS FOR SOLVING PROBLEMS] A radial thermal expansion tolerance X defined by formula (2) is set between an outer peripheral or inner peripheral corner refractory material and the refractory material or between the refractory materials, and the requirement represented by formula (1) is satisfied. X + A 2 + B 2 ) ··(1) wherein A represents the width of an outer peripheral corner refractory material (7); and B represents the height of a support metal material (11) of the corner refractory material (7). X = ([X0=] distance between the outer end part of the outer peripheral support metal material (11) and the inner end part of the inner peripheral support metal material (12) at the operation temperature) - ([X1=] sum of the length at room temperature in a radial direction of a plurality of refractory materials (6) and corner refractory materials (7,8)) ··(2)

公开(公告)号：EP1437420A4

公开(公告)日：2007-08-22

申请号：EP03799416

申请日：2003-08-29

Applicant: KOBE STEEL LTD

Inventor： TANAKA HIDETOSHI ,  MIYAHARA ITSUO ,  UEMURA HIROSHI ,  HARADA TAKAO ,  KOBAYASHI ISAO ,  SUGITATSU HIROSHI

IPC: C01G23/04 ,  C21B5/02 ,  C21B11/08 ,  C21B13/00 ,  C21B13/10 ,  C21B13/14 ,  C21B15/02 ,  C21C5/54 ,  C22B7/04 ,  C22B34/12 ,  F27B9/02

CPC classification number: C21B13/0006 ,  C21B13/006 ,  C21B13/008 ,  C21B13/105 ,  C21B13/14 ,  C21B13/143 ,  C21C5/54 ,  C22B34/1218 ,  C22B34/1281 ,  Y02P10/136 ,  Y02P10/216 ,  Y02P10/23

Abstract: A method for producing a titanium containing slag, which comprises heating a raw material mixture containing a titanium oxide, an iron oxide and a carbonaceous reducing agent or another raw material mixture further containing a calcium oxide source in addition to the above in a reducing furnace to reduce the iron oxide in the mixture to a reduced iron, supplying the product to a heating type melting furnace, heating the product in the melting furnace to melt said reduced iron and separate it from a slag containing a titanium oxide, and discharge the resultant titanium oxide containing slag to the outside of the furnace for recovery. The method can be used for producing a titanium oxide containing slag from a material containing a titanium oxide and an iron oxide with good efficiency, while suppressing the reduction of titanium dioxide and minimizing electric power consumption.