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    • 5. 发明授权
    • Method for making steel
    • 制钢方法
    • US4007034A
    • 1977-02-08
    • US579738
    • 1975-05-21
    • Jurgen HartwigDieter NeuschutzDietrich Radke
    • Jurgen HartwigDieter NeuschutzDietrich Radke
    • C21B13/00C21B13/14C21C5/00
    • C01B3/12C21B13/0073C21B13/14Y02P10/122Y02P10/126Y02P10/136Y02P10/212Y02P10/265Y02P10/283
    • A method is provided for producing steel from iron oxide-containing raw materials. The raw materials are initially converted, in a reduction furnace by direct reduction with a reducing gas, to a substantially metallized sponge iron. The metallized sponge iron is then melted with the addition of additives and possibly fine scrap in a melting vessel filled with a metal melt. Heat and carbon monoxide-containing exhaust gases are formed in the melting vessel due to the reaction of oxygen-containing gases with carbonaceous material. The heat is utilized in part to melt the sponge iron and the exhaust gases are utilized for the direct reduction. The melt is then transferred to a further vessel where it is further processed into steel by means of suitable metallurgical measures. In the process, the entire, strongly-heated exhaust gas from the melting vessel is caused to react in a reactor with (1) carbonaceous material, and with (2) water vapor and/or carbon dioxide. After suitable conditioning, this exhaust gas is utilized for the direct reduction of the iron oxide-containing raw materials. An exhaust gas is formed in the direct reduction furnace during the direct reduction, and part of this exhaust gas is conducted through a gas processing system and combined with the conditioned exhaust gas from the melting vessel to form the reducing gas used in the direct reduction furnace.
    • 提供了从含氧化铁原料生产钢的方法。 原料通过用还原气体直接还原在还原炉中被初始转化成基本金属化的海绵铁。 然后在填充有金属熔体的熔融容器中加入金属化的海绵铁,然后加入添加剂和可能的细小废料。 由于含氧气体与含碳材料的反应,在熔化容器中形成含有一氧化碳的废气。 部分地利用热量来熔化海绵铁,并且排气用于直接还原。 然后将熔体转移到另一个容器中,其中通过合适的冶金措施进一步加工成钢。 在该过程中,使来自熔融容器的整个强烈加热的废气在反应器中与(1)碳质材料和(2)水蒸汽和/或二氧化碳反应。 在适当调节之后,该废气用于直接还原含氧化铁的原料。 在直接还原期间,在直接还原炉中形成废气,并且该废气的一部分通过气体处理系统传导并与来自熔融容器的调节废气结合,形成在直接还原炉中使用的还原气体 。
    • 6. 发明授权
    • Process for producing iron from fine-grained iron ores
    • 从细粒铁矿石生产铁的工艺
    • US4851040A
    • 1989-07-25
    • US89419
    • 1987-08-26
    • Irmgard HosterThomas HosterDieter NeuschutzDietrich Radke
    • Irmgard HosterThomas HosterDieter NeuschutzDietrich Radke
    • C21B13/00C21B13/14
    • C21B13/143Y02P10/122Y02P10/128Y02P10/136
    • A process of producing iron from fine-grained iron ore by direct reduction, which includes adding oxygen, sponge iron and at least one of coal fines and low-temperature carbonized coal to an iron bath in a melt gasifier to produce a reducing gas, regulating the temperature of the reducing gas by blowing coal fines into it to produce a cooled reducing gas and a low-temperature carbonized coal, separating the low-temperature carbonized coal from the cooled reducing gas in order to use the separated low-temperature carbonized coal in the melt gasifier, preheating a fine-grained iron ore with a used reducing gas containing carbon monoxide to a temperature from 450.degree. to 700.degree. C., and reducing the preheated fine-grained iron ore with the cooled reducing gas at a temperature from 700.degree. to 1100.degree. C. in at least one fluidized bed to produce sponge iron and used reducing gas containing carbon monoxide, wherein the step of preheating the fine-grained iron ore results in decomposition of at least part of the carbon monoxide contained in the used reducing gas, producing a carbon layer on the preheated fine-grained iron ore, and also producing an exhaust gas and additional heat.
    • 一种通过直接还原从细粒铁矿石生产铁的方法,包括将氧气,海绵铁和至少一种煤粉和低温碳化煤加入到熔融气化器中的铁浴中以产生还原气体,调节 通过将煤粉吹入其中以产生冷却的还原气体和低温碳化煤的还原气体的温度,将低温碳化煤与冷却的还原气体分离,以使用分离的低温碳化煤 熔融气化器,用含有一氧化碳的废还原气体在450-700℃预热细粒铁矿石,并在700℃的温度下用冷却的还原气体还原预热的细粒铁矿石 在至少一个流化床中在1100℃至1100℃,以产生海绵铁并使用含有一氧化碳的还原气体,其中预热细粒铁矿石的步骤导致 所使用的还原气体中所含的一氧化碳的至少一部分,在预热的细粒铁矿石上产生碳层,并且还产生废气和额外的热量。