公开(公告)号：US20020000687A1

公开(公告)日：2002-01-03

申请号：US09912498

申请日：2001-07-26

申请人： Mitsubishi Heavy Industries, Ltd.

发明人： Hironori Fujioka ,  Hideaki Mizuki ,  Koichi Hirata ,  Shigeo Itano ,  Susumu Kamikawa ,  Hisao Teramoto ,  Takashi Yamane ,  Shigeki Sueda ,  Tetsumasa Kawamoto

IPC分类号： C21B013/00 ,  C22B005/14 ,  C22B001/00

CPC分类号： C21B13/14 ,  C21B13/008 ,  C21B13/10 ,  C21B13/105 ,  C22B1/244 ,  C22B1/245 ,  Y02P10/136

摘要： Several methods and production facilities are provided in order to solve several problems encountered in conventional methods and facilities for producing reduced iron by reducing raw material pellets of a mixture of an iron oxide powder and a reducing material powder in a rotary bed-type reducing furnace and by melting the reduced iron in a sealed-type electro-blast furnace. Re-oxidation of reduced pellets of the mixture pellets is prevented by introducing into a rotary bed-type reducing furnace a reduced gas generated in an electro-blast furnace. In addition, an improved mechanical strength of reduced pellets after direct reduction is attained by applying rolling action to the reduced pellets. A few method and facilities are provided for reliable utilization of wet mixture pellets and a preferable compositions of binders for forming the raw material mixture are selected. A novel charging device for charging raw material pellets is developed which is capable of charging the pellets on the rotary bed as a uniform layer formed by piling one or more pellets.

摘要翻译： 提供了几种方法和生产设备，以解决用于通过在旋转床式还原炉中还原氧化铁粉末和还原材料粉末的混合物的原料颗粒来生产还原铁的常规方法和设备中遇到的几个问题，以及 通过在密封型电炉中熔化还原铁。 通过向旋转床型还原炉中引入在电炉中产生的还原气体来防止混合物颗粒的还原颗粒的再氧化。 此外，通过向还原颗粒施加滚压作用，可以获得直接还原后的还原颗粒的改善的机械强度。 为了可靠地利用湿混合物颗粒提供了一些方法和设备，并且选择用于形成原料混合物的粘合剂的优选组合物。 开发了一种用于装入原料颗粒的新型充电装置，其能够将通过堆叠一个或多个颗粒形成的均匀层装载在旋转床上的颗粒。

公开(公告)号：US20010032527A1

公开(公告)日：2001-10-25

申请号：US09848280

申请日：2001-05-04

申请人： Mitsubishi Heavy Industries, Ltd.

发明人： Hironori Fujioka ,  Hideaki Mizuki ,  Koichi Hirata ,  Shigeo Itano ,  Susumu Kamikawa ,  Hisao Teramoto ,  Takashi Yamane ,  Shigeki Sueda ,  Tetsumasa Kawamoto

IPC分类号： C21B011/06 ,  C21B013/08

CPC分类号： C21B13/14 ,  C21B13/008 ,  C21B13/10 ,  C21B13/105 ,  C22B1/244 ,  C22B1/245 ,  Y02P10/136

摘要： Several methods and production facilities are provided in order to solve several problems encountered in conventional methods and facilities for producing reduced iron by reducing raw material pellets of a mixture of an iron oxide powder and a reducing material powder in a rotary bed-type reducing furnace and by melting the reduced iron in a sealed-type electro-blast furnace. Re-oxidation of reduced pellets of the mixture pellets is prevented by introducing into a rotary bed-type reducing furnace a reduced gas generated in an electro-blast furnace. In addition, an improved mechanical strength of reduced pellets after direct reduction is attained by applying rolling action to the reduced pellets. A few method and facilities are provided for reliable utilization of wet mixture pellets and a preferable compositions of binders for forming the raw material mixture are selected. A novel charging device for charging raw material pellets is developed which is capable of charging the pellets on the rotary bed as a uniform layer formed by piling one or more pellets.

摘要翻译： 提供了几种方法和生产设备，以解决用于通过在旋转床式还原炉中还原氧化铁粉末和还原材料粉末的混合物的原料颗粒来生产还原铁的常规方法和设备中遇到的几个问题，以及 通过在密封型电炉中熔化还原铁。 通过向旋转床型还原炉中引入在电炉中产生的还原气体来防止混合物颗粒的还原颗粒的再氧化。 此外，通过向还原颗粒施加滚压作用，可以获得直接还原后的还原颗粒的改善的机械强度。 为了可靠地利用湿混合物颗粒提供了一些方法和设备，并且选择用于形成原料混合物的粘合剂的优选组合物。 开发了一种用于装入原料颗粒的新型充电装置，其能够将通过堆叠一个或多个颗粒形成的均匀层装载在旋转床上的颗粒。