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    • 3. 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。
    • 8. 发明授权
    • Process for producing sponge iron by direct reduction of
iron-oxide-containing material
    • 通过直接还原含铁氧化物材料生产海绵铁的方法
    • US6143053A
    • 2000-11-07
    • US101292
    • 1998-09-30
    • Johann ReidetschlagerSiegfried ZellerFelix WallnerRoy Hubert Whipp, Jr.
    • Johann ReidetschlagerSiegfried ZellerFelix WallnerRoy Hubert Whipp, Jr.
    • C21B13/00C21B13/14
    • C21B13/0073C21B13/0033C21B13/146Y02P10/122Y02P10/136Y02P10/143
    • In a process for producing sponge iron by direct reduction of iron-oxide-containing material, synthesis gas is mixed with top gas forming in the direct reduction of the iron-oxide-containing material and is utilized as a CO- and H.sub.2 -containing reducing gas for direct reduction and for heating the iron-oxide-containing material to a reduction temperature. To be able to save energy in an economically efficient manner when producing steel, especially in the refining process, direct reduction is carried out as follows: (1) in addition to the reducing gas, a carbon-containing gas, such as natural gas, or a gas having higher hydrocarbons is utilized for reduction; (2) the iron-oxide-containing material for a predetermined period of time exceeding the period necessary for complete reduction is exposed to the reducing gas and to the additionally supplied carbon-containing gas, and (3) a CO/CO.sub.2 ratio ranging between 2 and 5, preferably a ratio in excess of 2.5, is adjusted in the reducing gas.
    • PCT No.PCT / AT97 / 00236 Sec。 371日期:1998年9月30日 102(e)1998年9月30日PCT PCT 1997年11月5日PCT公布。 公开号WO98 / 20171 日期1998年5月14日在通过直接还原含氧化铁材料生产海绵铁的方法中,合成气与直接还原含氧化铁材料混合形成顶部气体,并用作CO-和 含H2的还原气体用于直接还原,并将含铁氧化物的材料加热至还原温度。 为了在生产钢时能够以经济有效的方式节约能源,特别是在精炼过程中,直接还原如下:(1)除了还原气体之外,还可以使用天然气等含碳气体, 或具有较高烃的气体用于还原; (2)超过完全还原所需时间的预定时间段的含铁氧化物的材料暴露于还原气体和附加供给的含碳气体中,(3)CO / CO 2比范围在 在还原气体中调节2和5,优选超过2.5的比例。
    • 10. 发明授权
    • Apparatus for treating fine ore
    • 用于处理细矿石的设备
    • US5879618A
    • 1999-03-09
    • US948884
    • 1997-10-10
    • Ernst OberndorferGero TessmerRudolf WeidingerRoy Hubert Whipp, Jr.
    • Ernst OberndorferGero TessmerRudolf WeidingerRoy Hubert Whipp, Jr.
    • F26B17/10B03B4/02C21B13/00C21B13/10C22B1/00C22B1/10F26B3/08F26B25/00F27B15/00
    • B03B4/02C21B13/00C22B1/00C22B1/10F26B25/007F26B3/08Y02P10/143Y10S75/961
    • An apparatus for treating fine ore in which fine ore is dried by aid of a hot drying gas flowing around the ore particles. After having flown around the ore particles, the drying gas is purified while releasing entrained dust ore particles. The dust ore particles are collected and admixed to the dried fine ore. In order to avoid process disturbances in the further processing of fine ore due to excessive portions of dust ore particles present without the fine ore, drying is effected in the whirl-bed method under simultaneous wind-screening of the fine ore. The drying gas is passed through the fine ore under formation of a whirl bed and the speed of the drying gas is fixed at a rate at which entraining of dust ore particles having dimensions below a predetermined dimension is effected. The dust ore particles entrained in the drying gas are separated, collected and admixed to the dried fine ore in dosed amounts. The apparatus includes a fine ore whirl-bed drying means including a drying-gas feeding means. A drying-gas purification means receives the hot drying gas from the whirl-bed drying means. A separating means separates from the hot drying gas dust ore particles entrained by the drying gas. A first collecting vessel receives the dust ore particles separated from the hot drying gas. A mixing means mixes the dried fine ore and the dust ore particles separated from the drying gas to a predetermined quantitative ratio.
    • 一种用于处理细矿石的装置,其中通过在矿石颗粒周围流动的热干燥气体干燥细矿石。 在矿石颗粒周围流动之后,干燥气体被净化,同时释放夹带的灰尘颗粒。 粉尘矿石颗粒被收集并混合到干燥的细矿石上。 为了避免细粒矿进一步处理过程中的干扰,由于过多的灰尘矿颗粒不存在细矿石,因此在旋转床方式下,在细矿石的同时风筛下进行干燥。 干燥气体通过旋转床形成的细矿石,并且干燥气体的速度以固定在尺寸低于预定尺寸的粉尘矿石颗粒的速度被固定。 夹带在干燥气体中的灰尘颗粒被分离,收集并以经过量的量混合到干燥的细矿石中。 该设备包括一个包括干燥气体供给装置的细矿石旋转干燥装置。 干燥气体净化装置从旋转干燥装置接收热干燥气体。 分离装置与干燥气体夹带的热干燥气体灰尘颗粒分离。 第一收集容器接收与热干燥气体分离的灰尘颗粒。 混合装置将干燥的细矿石和从干燥气体分离的粉尘矿颗粒混合至预定的定量比例。