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公开(公告)号：US5514203A
公开(公告)日：1996-05-07
申请号：US419146
申请日：1995-04-10
IPC分类号： C04B5/06 , C21B3/02 , C21B13/00 , C21B13/02 , C21B13/14 , C21B15/02 , C22B1/24 , C22B7/02 , C21B11/00
CPC分类号： C21B13/14 , C22B7/02 , Y02P10/216 , Y10S75/961
摘要： In a process for producing an iron melt, iron ore is reduced to sponge iron in a direct reduction zone. The sponge iron is melted in a meltdown gasifying zone while supplying carbon-containing material under gasification of the carbon-containing material to reducing gas and under formation of a slag. The reducing gas is injected into the direct reduction zone, is reacted there and is drawn off as a top gas. The reducing gas and/or the top gas is subjected to gas scrubbing and the sludges separated during scrubbing are admixed with binder and coal dust and subsequently are agglomerated. In order to be able to supply back to the direct reduction process in large amounts sludges incurring in the direct reduction of iron ore without disturbing the process course of the direct reduction in any way, the sludges separated during scrubbing are dehydrated to a residual moisture content prior to being further treated, coal dust and, as a binder, quick lime are then admixed to the sludges, the sludges subsequently are granulated and the granulate thus formed is supplied to the meltdown gasifying zone while increasing the basicity of the slag to a maximum of 1.25.
摘要翻译： 在生产铁熔体的方法中，在直接还原区中将铁矿石还原成海绵铁。 海绵铁在熔化气化区熔化，同时在含碳材料气化的同时向还原气体供给含碳材料并形成炉渣。 将还原气体注入到直接还原区中，在其上反应并作为顶部气体排出。 将还原气体和/或顶部气体进行气体洗涤，并且在洗涤期间分离的污泥与粘合剂和煤尘混合并随后凝聚。 为了能够在直接还原铁矿石的同时大量回收直接还原工艺，而不会干扰直接还原的过程，洗涤过程中分离的污泥脱水至残留水分含量 在进一步处理之前，将煤灰和作为粘合剂的生石灰混合到淤泥中，随后将污泥造粒，并将由此形成的颗粒供应到熔化气化区，同时将炉渣的碱度提高到最大 的1.25。
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2.发明授权
公开(公告)号：US5127346A
公开(公告)日：1992-07-07
申请号：US776632
申请日：1991-10-15
CPC分类号： C21B5/001 , C10J3/506 , F23D1/00 , C10J2200/152 , C10J2300/1223 , F23D2214/00 , Y02P10/122
摘要： A burner for the combustion of fine-grained to dusty solid fuels incorporates a central internal tube for supplying the solid fuels and an annular gap surrounding the internal tube and delimited by a cooled external tube, for supplying oxygen or oxygen-containing gas. The annular gap ends externally by an exhaust port directed obliquely relative to the longitudinal axis of the burner and peripherally surrounding the end of the central internal tube, or by a plurality of exhaust ports annularly disposed about the longitudinal axis of the burner. In order to ensure the complete combustion of the fine-grained to dusty fuels at a long service life of the burner, the inclination of the exhaust port(s) relative to the longitudinal axis of the burner is below 20.degree.. The exhaust port(s) is/are arranged transverse to the longitudinal axis of the burner and in the radial direction relative to the same at a distance of between 5 and 30 mm from the inner wall of the internal tube. The inclination of the exhaust port(s) relative to the longitudinal axis of the burner and the radial distance of the exhaust port(s) relative to the inner wall of the central internal tube are coordinated in a manner that the intersection of the extensions of the exhaust port and of the inner wall of the internal tube outside of the burner lies 20 to 80 mm in front of the burner mouth.
摘要翻译： 用于燃烧细颗粒到多尘的固体燃料的燃烧器包括用于供应固体燃料的中心内管和围绕内管的环形间隙并由冷却的外管限定，用于供应氧气或含氧气体。 环形间隙通过相对于燃烧器的纵向轴线倾斜地指向并围绕中心内管的端部或围绕燃烧器的纵向轴线环形设置的多个排气口的外部终止。 为了确保在燃烧器使用寿命长的细颗粒燃料中完全燃烧，排气口相对于燃烧器纵轴的倾角低于20度。 排气口横向于燃烧器的纵向轴线并且相对于排气口在与内管的内壁5至30mm的距离处相对于其径向设置。 排气口相对于燃烧器的纵向轴线的倾斜度和排气口相对于中心内管的内壁的径向距离是以这样一种方式协调的， 燃烧器外面的内部排气口和内壁的内壁在燃烧口前面20至80mm。
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公开(公告)号：US5989308A
公开(公告)日：1999-11-23
申请号：US817263
申请日：1997-04-17
CPC分类号： C21B13/0033 , C21B13/002 , C21B13/14 , Y02P10/122 , Y02P10/128 , Y02P10/136 , Y02P10/265 , Y02P10/283
摘要： A plant for the production of pig iron and/or sponge iron includes a direct-reduction shaft furnace for lumpy iron ore, a melter gasifier, a feed duct for a reducing gas connecting the melter gasifier with the shaft furnace, a conveying duct for the reduction product formed in the shaft furnace connecting the shaft furnace with the melter gasifier, a top-gas discharge duct departing from the shaft furnace, feed ducts for oxygen-containing gases and carbon carriers running into the melter gasifier and a tap for pig iron and slag provided at the melting vessel. In order to be able to process not only lumpy ore, but also fine ore within a wide variation range with regard to quantity in a manner optimized in terms of energy and product, the plant includes at least one fluidized bed reactor for receiving fine ore, a reducing-gas feed duct leading to the fluidized bed reactor, an offgas discharge duct departing from the fluidized bed reactor and a discharge means provided for the reduction product formed in the fluidized bed reactor, wherein the top-gas discharge duct of the shaft furnace and the offgas discharge duct of the fluidized bed reactor run into a purifier and subsequently into a heat exchanger from which the reducing-gas feed duct of the fluidized bed reactor departs.
摘要翻译： PCT No.PCT / AT95 / 00199 Sec。 371日期1997年04月17日 102（e）日期1997年4月17日PCT提交1995年10月12日PCT公布。 出版物WO96 / 12045 日期1996年04月25日生产生铁和/或海绵铁的工厂包括用于块状铁矿石的直接还原竖炉，熔炉气化器，用于将熔化炉气化器与竖炉连接的还原气体的进料管， 在竖炉中形成的用于还原产品的输送管道，其将竖炉与熔化器气化器连接起来，从立式炉排出的顶部气体排出管道，用于含氧气体的进料管和进入熔化炉气化器的碳载体， 在熔化容器处提供生铁和矿渣的水龙头。 为了能够在能量和产品方面优化的方式处理不仅块状矿石，而且能够处理在数量方面的广泛变化范围内的细矿石，该装置包括至少一个用于接收细矿石的流化床反应器， 通向流化床反应器的还原气进料管道，离开流化床反应器的废气排放管道和为流化床反应器中形成的还原产物提供的排放装置，其中竖炉的顶部排气管道 并且流化床反应器的废气排放管道进入净化器，随后进入热交换器，流化床反应器的还原气体进料管从该换热器排出。
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