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    • 1. 发明授权
    • Method of charging a pressurized container with granular solids
    • 用粒状固体装入加压容器的方法
    • US06676731B1
    • 2004-01-13
    • US09807749
    • 2001-08-08
    • Rüdiger DeppeKlaus KanschikAndreas Orth
    • Rüdiger DeppeKlaus KanschikAndreas Orth
    • C21B1300
    • F27D3/0033B01J3/02B01J8/003B01J8/0035B65G53/4691F27D2099/008
    • The solids will first of all reach a first container under atmospheric pressure and then reach a second container of variable pressure, which is disposed thereunder, before they are introduced into the pressure vessel. The first and the second container each have a lower outlet passage and a movable shutter cooperating with the outlet passage. The outlet end of the outlet passage is disposed 20 to 400 mm above the shutter in the closed position, in the closed position the shutter forms the bottom of a chamber at least partly filled with solids. The chamber is connected with the outlet passage in a gastight way, and there is no gastightness between the chamber and the shutter. In the closed position, the shutter carries a solid bed, a vertical solid column having a height of at least 1 m is present in the outlet passage and in the container. In the closed position, seal gas is pressed into the chamber and into the solid column from the outside.
    • 固体首先在大气压力下到达第一容器,然后在其被引入压力容器之前到达设置在其下方的可变压力的第二容器。 第一和第二容器各自具有下出口通道和与出口通道配合的活动快门。 出口通道的出口端在关闭位置上在闸板上方20至400mm处设置,在关闭位置,闸板形成至少部分地填充有固体的室的底部。 该室以气密的方式与出口通道连接,并且室和快门之间没有气密性。 在关闭位置,快门携带固体床,出口通道和容器中存在高度至少为1米的立柱。 在关闭位置,密封气体从外部压入室内并进入固体柱。
    • 3. 发明授权
    • Method for manufacturing reduced iron pellets
    • 还原铁丸的制造方法
    • US06241803B1
    • 2001-06-05
    • US09487178
    • 2000-01-19
    • Kojiro Fuji
    • Kojiro Fuji
    • C21B1300
    • C21B13/0086C21B13/0046C21B13/105C22B1/26
    • A method for manufacturing reduced iron pellets comprises the steps of heating iron oxide pellets incorporating carbonaceous material to yield reduced iron pellets having an apparent density of not more than 4.0 g/cm3, cooling the hot reduced iron pellets by using water at an average cooling rate between 1,500° C./min and 500° C./min, when the surfaces of the reduced iron pellets are cooled from 650° C. to 150° C. The method described above does not require expensive facilities for processing briquettes and can manufacture the reduced iron pellets having high degree of metallization, superior crushing strength, and an apparent density of not more than 4.0 g/cm3.
    • 制造还原铁丸的方法包括以下步骤:加热含有碳质材料的氧化铁粒料,得到表观密度不大于4.0g / cm 3的还原铁丸,用平均冷却速度的水冷却热还原铁丸 当还原铁丸的表面从650℃冷却至150℃时,在1500℃/分钟和500℃/分钟之间。上述方法不需要昂贵的处理压块的设备并且可以制造 还原铁丸具有高度的金属化,优异的抗碎强度和不超过4.0g / cm 3的表观密度。
    • 6. 发明授权
    • Method for direct reduction and upgrading of fine-grained refractory and earthy iron ores and slags
    • 直接还原和细化耐火材料和土质铁矿石和矿渣的方法
    • US06355088B1
    • 2002-03-12
    • US09417904
    • 1999-10-14
    • Richard B. Greenwalt
    • Richard B. Greenwalt
    • C21B1300
    • C22B1/00C21B13/0086C22B5/10Y02P10/136
    • A method of upgrading relatively rich, fine-grained earthy hematite iron ores is provided. The iron ore, after suitable preparation, is reduced using a solid state reduction technique. As a result of the reduction process, the iron grains undergo size enhancement while the nonmetallic oxides are unreduced and remain as refractory oxide gangue. After completion of the reduction process, the enlarged malleable metallic iron grains are crushed in such a way as to cause the iron grains to fuse together, forming large, flat iron flakes. In order to achieve maximum flake size, the crushing system applies a relatively gradual pressing force rather than a rapid, impact type of force. As the large flakes are formed, the iron grains are liberated from the refractory oxide grains resulting in an increase in density. The crushing system causes non-iron oxide bonds to be broken, resulting in the formation of residual refractory particles generally with a grain size of less than 0.05 millimeters. The shape, size, density, and ferromagnetic differences between the iron flakes and the nonmetallic oxides are used to separate the iron from the nonmetallics. A variety of different separation techniques may be used, including screens, jigs, spirals, elutriation, cyclones, magnetic, and gravity separation. The combination of solid state reduction, mechanical working, and physical/electromagnetic separation enable consistent production of super concentrates of material with metallic iron contents exceeding 92% with less than 4% oxide gangue and an iron recovery of greater than 95%.
    • 提供了一种升级相对丰富,细粒度的泥土赤铁矿铁矿石的方法。 在合适的制备之后,使用固态还原技术还原铁矿石。 作为还原过程的结果,铁颗粒经历尺寸增加,而非金属氧化物不还原并保持为难熔氧化物ang石。 在还原过程完成之后,可膨胀的金属铁颗粒被粉碎以使铁粒熔合在一起,形成大的扁平铁屑。 为了达到最大的片状尺寸,破碎系统施加相对逐渐的按压力而不是快速的冲击类型的力。 当形成大的薄片时,铁颗粒从耐火氧化物颗粒中释放,导致密度增加。 破碎系统导致非铁氧化物键断裂,导致残留的耐火材料颗粒的形成通常具有小于0.05毫米的粒度。 使用铁片和非金属氧化物之间的形状,尺寸,密度和铁磁性差异将铁与非金属化合物分离。 可以使用各种不同的分离技术,包括筛网,夹具,螺旋,淘析,旋风分离器,磁力和重力分离。 固态还原,机械加工和物理/电磁分离的结合使得能够使金属铁含量超过92%,超过4%氧化ang石和大于95%的铁回收率的超精细材料的一致生产。
    • 7. 发明授权
    • Process and plant for the direct reduction of particulate iron-oxide-containing material
    • 用于直接还原颗粒状氧化铁的材料的工艺和设备
    • US06336954B1
    • 2002-01-08
    • US09505559
    • 2000-02-17
    • Siegfried ZellerKonstantin MilionisJohann ReidetschlägerLeopold Werner KepplingerJohann ZirngastJohannes SchenkRoy Hubert Whipp, Jr.
    • Siegfried ZellerKonstantin MilionisJohann ReidetschlägerLeopold Werner KepplingerJohann ZirngastJohannes SchenkRoy Hubert Whipp, Jr.
    • C21B1300
    • C21B13/0033Y02P10/122Y02P10/128Y02P10/136Y02P10/143
    • A process for the direct reduction of particulate iron-oxide-containing material by fluidization. A synthesis gas is introduced as a reducing gas into several fluidized bed zones consecutively arranged in series for the reducing gas. The reducing gas is conducted from one fluidized bed zone to another fluidized bed zone in counterflow to the particulate iron-oxide containing material. In order to reduce operating costs and, in particular, the energy demand, the temperature of the iron-oxide-containing material is adjusted in the first fluidized bed zone to be either below 400° C. (and, preferably, below 350° C.), or above 580° C. (and preferably about 650° C.), or to a temperature ranging from 400° C. to 580° C. If the temperature of the iron-oxide-containing material in the first fluidized bed zone is adjusted to be below 400° C., the temperature range in the following fluidized bed zone between 400° C. and 580° C. is passed through within a period of 10 minutes and, preferably, within 5 minutes. If the temperature of the iron-oxide-containing material in the first fluidized bed zone is adjusted to be above 580° C., the temperature range in the first fluidized bed zone between 400° C. and 580° C. is passed through within a period of time of maximally 10 minutes and, preferably, 5 minutes. If the temperature of the iron-oxide-containing material in the first fluidized bed zone is adjusted to be in the range of from 400° C. to 580° C., the iron-oxide-containing material remains within that temperature range for a maximum of 10 minutes and, preferably, 5 minutes, and the material is passed on into the following fluidized bed zone immediately after having reached the desired temperature.
    • 一种通过流化直接还原含氧化铁颗粒物质的方法。 将合成气作为还原气体引入连续排列为还原气体的多个流化床区域。 还原气体从一个流化床区域传导到另一个流化床区域,与含铁氧化物颗粒材料相反。 为了降低运行成本,特别是能量需求,将含铁氧化物的材料的温度在第一流化床区域调节至低于400℃(优选低于350℃) ),或高于580℃(优选约650℃),或达到400℃至580℃的温度。如果第一流化床中含氧化铁的材料的温度 将区域调节至低于400℃,在下述流化床区域中在400℃至580℃之间的温度范围在10分钟内优选在5分钟内通过。 如果将第一流化床区域中含氧化铁的材料的温度调节至高于580℃,则在400℃至580℃之间的第一流化床区域内的温度范围通过 时间最长为10分钟,最好为5分钟。 如果将第一流化床区域中含氧化铁的材料的温度调节至400℃至580℃的范围内,则含铁氧化物的材料保持在该温度范围内 最多10分钟,优选5分钟,并且在达到所需温度之后立即将材料通入下一流化床区。
    • 9. 发明授权
    • Melt-reducing facility and method of operation thereof
    • 熔融还原设备及其操作方法
    • US06200518B1
    • 2001-03-13
    • US08930416
    • 1997-09-24
    • Hiroshi Ichikawa
    • Hiroshi Ichikawa
    • C21B1300
    • C21B11/00C21B13/0006C21B2100/44C21B2100/62C21B2100/66F27B3/045F27B3/225F27B19/02F27D17/004F27D17/008F27D2017/006Y02P10/136
    • A melt-reducing facility for directly producing molten iron or molten pig iron by throwing iron bearing material, carbon material and flux into furnace bodies and blowing pure oxygen and/or an oxygen-rich gas therein, wherein a waste heat boiler and a power-generating facility are connected to a plurality of furnace bodies through ducts which can be freely opened and closed, the waste heat boiler being capable of recovering by vaporization the sensible heat and the latent heat of the combustible gases generated from the furnace bodies. The invention is further concerned with a method of operating the melt-reducing facility wherein when, for example, two furnaces are being operated, the secondary combustion rate in the furnaces is increased to decrease the amount of heat of the combustible gases per a furnace and when one furnace is being operated, the secondary combustion rate in the furnace is decreased to double the amount of heat of the combustible gases in one furnace, so that the total amount of heat of combustible gases of the two furnaces remains constant at all times.
    • 一种用于通过将铁轴承材料,碳材料和助熔剂投掷到炉体中并且在其中吹入纯氧和/或富氧气体来直接生产铁水或熔融生铁的熔融还原设备,其中废热锅炉和动力 - 发电设备通过可以自由打开和关闭的管道连接到多个炉体,废热锅炉能够通过蒸发来回收由炉体产生的可燃气体的显热和潜热。 本发明还涉及一种操作熔融还原设备的方法,其中当例如两台炉子被操作时,炉子中的二次燃烧速率增加,以减少每炉的可燃气体的热量, 当一个炉子运行时,炉子中的二次燃烧速率降低到一个炉中可燃气体的热量的两倍,使得两个炉子的可燃气体的总热量始终保持恒定。