公开(公告)号：EP3026129A4

公开(公告)日：2017-03-08

申请号：EP14829405

申请日：2014-05-26

申请人： KK KOBE SEIKO SHO (KOBE STEEL LTD )

发明人： TSUCHIYA OSAMU ,  TANAKA HIDETOSHI

IPC分类号： C22B1/24 ,  C21B13/00 ,  C22B1/16

CPC分类号： C21B13/146 ,  C21B13/0046 ,  C21B13/0066 ,  C22B1/02 ,  C22B1/16 ,  C22B1/2406

公开(公告)号：EP1808498A4

公开(公告)日：2008-10-15

申请号：EP05805211

申请日：2005-10-26

申请人： KOBE STEEL LTD

发明人： TANAKA HIDETOSHI ,  MIMURA TSUYOSHI ,  HARADA TAKAO ,  HAJIKA KIMINORI ,  YASO TADASHI ,  KURAKAKE T

IPC分类号： C21B11/00 ,  C21B13/10 ,  C22B1/16

CPC分类号： C21B13/0066 ,  C21B13/0086 ,  C21B13/105 ,  C21B13/143 ,  C21B2100/44 ,  C21B2100/66 ,  C22B1/245 ,  C22B5/10 ,  Y02P10/136 ,  Y02P10/216

摘要： Bedding carbon material (H) is charged onto the hearth of rotary hearth furnace (14), and carbon-material-incorporated pellets (D) containing powdery iron ore (A) and powdery coal (B) are placed on the bedding carbon material (H). The hearth is caused to pass through the inside of the rotary hearth furnace (14) to thereby attain not only heating reduction of the carbon-material-incorporated pellets (D) into solid reduced iron (F) but also heating dry distillation of the bedding carbon material (H) into char (G). Subsequently, these solid reduced iron (F) and char (G) substantially without cooling are charged into iron bath type melting furnace (16), and simultaneously oxygen gas is blown thereinto. The solid reduced iron (F) is melted, thereby obtaining molten iron (K). At least part of wastegas (M) from the iron bath type melting furnace (16) is subjected to cooling and dust removal and thereafter used as a fuel gas for the rotary hearth furnace (14).

公开(公告)号：EP1616968A4

公开(公告)日：2008-03-05

申请号：EP04717860

申请日：2004-03-05

申请人： KOBE STEEL LTD

发明人： HARADA TAKAO ,  TANAKA HIDETOSHI ,  KOBAYASHI ISAO ,  OKUYAMA NORIYUKI ,  SHIGEHISA TAKUO

IPC分类号： C10B57/04 ,  C21B13/00 ,  C10B57/00 ,  C10G1/04 ,  C10G1/06 ,  C10L9/00 ,  C21B5/00 ,  C21B11/00 ,  C21B13/10 ,  C22B5/10

CPC分类号： C10L9/02 ,  C21B13/006 ,  C21B13/0066 ,  C21B13/10 ,  C21B13/105 ,  Y02P10/136

摘要： A first method for producing an improved coal which comprises heating and aging a low quality coal in an organic solvent to produce an improved coal for use in metallurgy having enhanced softness and fluidity as compared to the low quality coal; and a second method for producing a reduced metal and a slag containing an oxidized nonferrous metal, which comprises preparing granules from a mixture of the improved coal and a raw material containing the oxidized nonferrous metal, heating and reducing the granules in a moving hearth furnace, followed by successive heating and melting, to form a reduced molten product, cooling and solidifying the reduced molten product in the moving hearth furnace to form a reduced solidified product, withdrawing the reduced solidified product out of the furnace, separating and removing a slag with a screen, and recovering a metal component as a reduced metal. The first method allows the reforming of a low quality coal, which can not be used in the production of a reduced metal through a conventional carbon composite method, into an improved coal for metallurgy suitable for use in the carbon composite method, and the second method can be used for producing a high quality reduced metal by the use of the above improved coal as a coal to be incorporated inside.

公开(公告)号：EP2199417A4

公开(公告)日：2010-09-01

申请号：EP08831788

申请日：2008-08-25

申请人： KOBE STEEL LTD

发明人： HARADA TAKAO ,  FUJIMOTO HIDEAKI ,  TANAKA HIDETOSHI

IPC分类号： C22B1/248 ,  B01J2/22 ,  B09B3/00 ,  B30B11/16 ,  C22B1/244 ,  C22B7/02

CPC分类号： C22B1/244 ,  B30B11/16 ,  B30B15/308 ,  C22B1/245 ,  C22B1/248 ,  C22B7/02 ,  Y02P10/212

摘要： The present invention is directed to providing a production method capable of producing carbon composite briquettes having sufficient strength without excessively reducing a production capacity, even using steel mill dust containing oil. This method comprises: adding at least a carbonaceous material and a binder to steel mill dust containing oil and mixing them to form a powdery mixture; compacting the powdery mixture by means of a pressure roll to produce briquettes; and recognizing an increase/decrease in an oil content of the powdery mixture to adjust a rotation speed of the pressure roll so as to lower the rotation speed along with an increase in the oil content.

公开(公告)号：EP1437420A4

公开(公告)日：2007-08-22

申请号：EP03799416

申请日：2003-08-29

申请人： KOBE STEEL LTD

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

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

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

摘要： 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.

公开(公告)号：EP2096181A4

公开(公告)日：2011-04-20

申请号：EP07831349

申请日：2007-11-07

申请人： KOBE STEEL LTD

发明人： TANAKA HIDETOSHI ,  SUGIYAMA TAKESHI

IPC分类号： C22B1/16 ,  C21B13/00 ,  C21B13/10 ,  C22B1/248 ,  C22B5/10

CPC分类号： C22B1/248 ,  C21B5/008 ,  C21B13/0093 ,  C22B1/245 ,  C22B5/10 ,  Y10T428/12181

公开(公告)号：EP1602737A4

公开(公告)日：2007-11-21

申请号：EP04709375

申请日：2004-02-09

申请人： KOBE STEEL LTD

发明人： HARADA TAKAO ,  TANAKA HIDETOSHI

IPC分类号： C22B1/16 ,  C21B5/00 ,  C21B7/10 ,  C21B13/10 ,  C22B1/216 ,  C22B1/245 ,  C22B5/10 ,  C22B23/02 ,  C22B34/12 ,  C22B34/32 ,  C22B47/00

CPC分类号： C22B5/10 ,  C21B5/007 ,  C21B7/103 ,  C22B1/245

摘要： Agglomerates with carbonaceous material incorporated therein that contain a widely produced inexpensive high-VM coal of rich reserve and do not need metal oxide pulverization, excelling in strength after reduction; and a process for producing a reduced metal therefrom. In particular, agglomerates with carbonaceous material incorporated therein, composed of a carbonaceous material and a raw material containing metal oxides, such as iron ore, to be reduced are produced with the use of high-VM coal of 35 mass% or higher volatile component content as the carbonaceous material at an agglomeration pressure of at least 2 ton/cm so as to attain a porosity lowering to 35% or below. This porosity lowering is effective in the promotion of heat conduction within the agglomerates during the stage of high-temperature reduction by means of a rotary hearth furnace so that sintering between reduced metal portions is efficiently advanced across the whole region of the agglomerates. Thus, production of a reduced metal of high crushing strength can be realized.

公开(公告)号：EP1469086A4

公开(公告)日：2007-08-22

申请号：EP03700590

申请日：2003-01-16

申请人： KOBE STEEL LTD

发明人： KOBAYASHI ISAO ,  MIYAHARA ITSUO ,  TANAKA HIDETOSHI ,  TOKUDA KOJI

IPC分类号： C21B13/00 ,  C21B13/10 ,  C21B13/14

CPC分类号： C21B13/105 ,  C21B13/006 ,  C21B13/14 ,  C21B13/143 ,  C21B2100/44 ,  C21B2100/66 ,  C21C2250/02 ,  Y02P10/136

摘要： A process for producing molten iron wherein a formed material containing iron oxide and a carbonaceous reducing agent is used as a raw material, and a rotary hearth furnace and a melting furnace are connected, characterized in that said formed material is first charged into a heating and reducing furnace, to enhance a metallization rate to 60 % or more prior to the feed to the melting furnace, and the secondary burning rate of a CO gas in said melting furnace is controlled to 40 % or less. The process allows the suppression of the loss by melting of refractories of the rotary hearth furnace and the melting furnace, in combination with the production of a molten iron having an enhanced purity of iron with good productivity.