公开(公告)号：US20090136887A1

公开(公告)日：2009-05-28

申请号：US12067422

申请日：2006-10-10

Applicant: Masahiko Tetsumoto ,  Sumito Hashimoto ,  Hiroshi Sugitatsu

Inventor： Masahiko Tetsumoto ,  Sumito Hashimoto ,  Hiroshi Sugitatsu

IPC: F27B9/16

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

Abstract: PROBLEM TO BE SOLVED: To provide a rotary hearth furnace which has a simple furnace structure in which the furnace is not damaged even if the furnace is operated for a long term while presenting general equations capable of adequately determining a thermal expansion margin in the rotary hearth furnace.SOLUTION: Between the corner refractory of the outer circumference side or the inner circumference side and the refractory, or between the refractories, a radius direction thermal expansion margin X defined by the following equation 2 is set, and if a width of the outer circumference side corner refractory 7 is given as A and a height of the hearth curb casting 11 of the corner refractory 7 is given as B, the following equation 1 is satisfied: X+A

Abstract translation: 要解决的问题：提供一种具有简单的炉结构的转底炉，即使炉长期运行也不会损坏炉子，同时具有能够适当地确定转炉的热膨胀裕度的一般方程式 炉。 解决方案：在外周侧或内周侧的角部耐火材料与耐火材料之间或在耐火材料之间设定由以下等式2限定的半径方向热膨胀裕度X，如果外周侧的宽度 拐角耐火材料7为A，角耐火材料7的炉底边缘铸件11的高度为B，满足以下等式1：＆lt;线内公式描述=“在线公式”结束= “lead”？> X + A <√（A2 + B2）等式1 <？in-line-formula description =“In-line Formulas”end =“tail”？> <？in-line-formula description =“In X =（[X 0 =]外周侧炉底边缘铸件11的外端部与内周侧炉底边缘铸件12的内端部之间的距离，线状公式“end =”lead“ 操作温度） - （[X1 =]多个耐火材料6和拐角耐火材料7和8在室温下的半径方向上的总长度） 公式2 <？in-line-formula description =“In-line Formulas”end =“tail”？>

公开(公告)号：US6129777A

公开(公告)日：2000-10-10

申请号：US275017

申请日：1999-03-24

Applicant: Kojiro Fuji ,  Hidetoshi Tanaka ,  Takao Harada ,  Takeshi Sugiyama ,  Yoshimichi Takenaka ,  Kazuya Miyagawa ,  Shoji Shirouchi ,  Haruhisa Iwakiri ,  Makoto Nishimura ,  Takao Umeki ,  Sumito Hashimoto ,  Teruhisa Uehara

Inventor： Kojiro Fuji ,  Hidetoshi Tanaka ,  Takao Harada ,  Takeshi Sugiyama ,  Yoshimichi Takenaka ,  Kazuya Miyagawa ,  Shoji Shirouchi ,  Haruhisa Iwakiri ,  Makoto Nishimura ,  Takao Umeki ,  Sumito Hashimoto ,  Teruhisa Uehara

IPC: C21B13/10 ,  C21B11/00

CPC classification number: C21B13/10 ,  C21B13/105 ,  Y02P10/136

Abstract: Iron oxide agglomerates incorporated with the carbonaceous material having a particle size within a range of about 10 to 30 nm are prepared upon production of reduced iron agglomerates. Then, the iron oxides agglomerates incorporated with the carbonaceous material were laid thinly at a laying density of less than 1.4 kg/m.sup.2 /mm or lower on a hearth of a moving hearth furnace. Subsequently, the iron oxide agglomerates are heated rapidly such that the surface temperature of the iron oxide agglomerates reaches 1200.degree. C. or higher within one-third of the retention period of time of the iron oxide agglomerates in the moving hearth furnace. Then, the iron oxide agglomerates are reduced till the metallization ratio thereof reaches 85% or higher to form reduced iron agglomerates and then the reduced iron agglomerates are discharged out of the moving hearth furnace. With the procedures, reduced iron agglomerates of a high average quality can be obtained at a high productivity.

Abstract translation: 在生产还原铁附聚物时制备与含有约10至30nm范围内的粒度的含碳材料结合的氧化铁附聚物。 然后，在移动的炉底炉的炉床上以与小于1.4kg / m 2 / mm 2或更低的铺设密度薄层地铺设掺入碳质材料的氧化铁附聚物。 随后，快速加热氧化铁附聚物，使铁氧化物附聚物的表面温度在移动的炉床炉中的氧化铁附聚物的保留时间的三分之一内达到1200℃或更高。 然后，将氧化铁附聚物还原直到其金属化率达到85％以上，形成还原铁团聚体，然后将还原铁团聚体从移动的炉床炉排出。 通过该方法，可以以高生产率获得高平均质量的还原铁团块。

公开(公告)号：US07922484B2

公开(公告)日：2011-04-12

申请号：US12067422

申请日：2006-10-10

Applicant: Masahiko Tetsumoto ,  Sumito Hashimoto ,  Hiroshi Sugitatsu

Inventor： Masahiko Tetsumoto ,  Sumito Hashimoto ,  Hiroshi Sugitatsu

IPC: F27B9/30 ,  F27B9/34

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

Abstract: To provide a rotary hearth furnace which has a simple furnace structure in which the furnace is not damaged even if the furnace is operated for a long term while presenting general equations capable of adequately determining a thermal expansion margin in the rotary hearth furnace.

Abstract translation: 为了提供一种具有简单的炉结构的转炉式炉，即使炉长期运行也不会损坏炉子，同时具有能够适当地确定转底炉的热膨胀裕度的一般方程式。

公开(公告)号：US20060147866A1

公开(公告)日：2006-07-06

申请号：US10542637

申请日：2003-12-25

Applicant: Sumito Hashimoto ,  Masahiko Tetsumoto

Inventor： Sumito Hashimoto ,  Masahiko Tetsumoto

IPC: F27B7/24

CPC classification number: F27D99/0073 ,  C21B13/105 ,  F27D3/08 ,  F27D2099/0078 ,  Y10S277/903

Abstract: A sealing structure for a solid-transferring screw installed inside a heating furnace such as a material-leveling screw and a product-discharging screw, the sealing structure enabling the solid-transferring screw to be lifted during operation while airtightness of the heating furnace is retained. A driving shaft of the solid-transferring screw passes through through-holes formed in side walls of the heating furnace and is supported by liftable supporting devices disposed outside the furnace. Sealing blocks are attached on outer edges of the through-holes to surround the periphery of the through-holes at the outside of the furnace. Sliding panels are disposed at outer sides of the sealing blocks and have sliding holes for sliding the screw-driving shaft so that the driving shaft extends through the sliding holes. The sliding panels are brought into contact with the sealing blocks via the sealing members therebetween so that the sliding panels are slidable in the vertical direction.

Abstract translation: 安装在诸如材料调平螺钉和产品排出螺杆的加热炉内部的固体转移螺杆的密封结构，在保持加热炉的气密性的同时使固体转移螺杆在运行期间提升的密封结构保持 。 固体传递螺杆的驱动轴通过形成在加热炉的侧壁上的通孔，并且被设置在炉外的可升降支撑装置支撑。 密封块附着在通孔的外边缘上，以便在炉外部围绕通孔周边。 滑动面板设置在密封块的外侧，并且具有用于滑动螺丝驱动轴的滑动孔，使得驱动轴延伸穿过滑动孔。 滑动面板通过其间的密封构件与密封块接触，使得滑动面板能够在垂直方向上滑动。

公开(公告)号：US06814924B2

公开(公告)日：2004-11-09

申请号：US10448207

申请日：2003-05-30

Applicant: Yoshihiro Urabe ,  Sumito Hashimoto ,  Takao Umeki

Inventor： Yoshihiro Urabe ,  Sumito Hashimoto ,  Takao Umeki

IPC: C21B1310

CPC classification number: F27D3/08 ,  C21B13/105 ,  F27B9/16 ,  F27B9/39 ,  F27M2001/02

Abstract: A rotary hearth furnace is provided to simplify detachment and assembly operations of a reduced iron discharging screw. At both side walls of an insulating housing 2a constituting in part of a furnace body 2 of a rotary hearth furnace 1 are installed through-holes which a spiral blade 42 of a reduced iron discharging screw 4 can pass through, each of the through-holes is closed by an inner hatch member 8 and an outer hatch member 9 which are externally mounted in a removable fashion to a rotary shaft 41 of the reduced iron discharging screw 4, an inner screw supporting device 10 is installed in the outside at an inner periphery side of the hearth 3 as well as an outer screw supporting device 20 is installed in the outside at an outer periphery side of the hearth 3. The reduced iron discharging screw 4 is detached from the furnace body 2 via the through-holes and assembled to the furnace body 2 via the through-holes by using the inner screw supporting device 10 and the outer screw supporting device 20.

Abstract translation: 提供了一种旋转炉床炉，以简化还原铁排放螺杆的拆卸和组装操作。构成回转炉床炉1的炉体2的一部分的绝缘壳体2a的两个侧壁安装有螺旋形的通孔 还原铁排放螺杆4的叶片42可以通过，每个通孔由内部舱口构件8和外部舱口构件9封闭，外部舱口构件8和外部舱口构件9以可移除的方式外部安装到还原铁的旋转轴41 排出螺钉4，内壁螺钉支撑装置10安装在炉膛3的内周侧的外侧，并且外螺纹支撑装置20安装在炉膛3的外周侧的外侧。 铁排出螺杆4经由通孔从炉体2分离，并且通过使用内螺纹支撑装置10和外螺钉支撑件通过通孔组装到炉体2 装置20。

公开(公告)号：US06258149B1

公开(公告)日：2001-07-10

申请号：US09274351

申请日：1999-03-23

Applicant: Takeshi Sugiyama ,  Hidetoshi Tanaka ,  Takao Harada ,  Sumito Hashimoto ,  Yoshimichi Takenaka ,  Shoji Shirouchi

Inventor： Takeshi Sugiyama ,  Hidetoshi Tanaka ,  Takao Harada ,  Sumito Hashimoto ,  Yoshimichi Takenaka ,  Shoji Shirouchi

IPC: C21B1308

CPC classification number: C21B13/10 ,  C21B13/105 ,  Y02P10/136 ,  Y02P10/143

Abstract: A method of producing reduced iron agglomerates capable of preventing oxidation in the surface layer of the agglomerates and obtaining reduced iron agglomerates having a high degree of metallization, by blowing a methane or methane-containing gas to the reduced iron oxide agglomerates incorporated with carbonaceous material at a surface temperature of 1150° C. or higher during movement in a moving hearth heating type furnace at the end of reduction as the final stage of the stagnation period of the agglomerates in the heating furnace.

Abstract translation: 通过向含碳材料的还原氧化铁附聚物吹入含甲烷或含甲烷的气体，可以生产还原铁附聚物的方法，所述还原铁附聚物能够防止附聚物的表层中的氧化并获得具有高度金属化的还原铁附聚物 在作为加热炉中的附聚物的停滞期的最后阶段的还原结束时在移动炉床加热型炉中移动期间的表面温度为1150℃以上。