公开(公告)号：US5560762A

公开(公告)日：1996-10-01

申请号：US385994

申请日：1995-02-09

申请人： Wolfgang Bresser ,  Martin Hirsch ,  Alpaydin Saatci

发明人： Wolfgang Bresser ,  Martin Hirsch ,  Alpaydin Saatci

IPC分类号： C21B13/00 ,  C22B1/242 ,  C22B1/243 ,  C21B13/14

CPC分类号： C21B13/00 ,  C21B13/0033 ,  C22B1/242 ,  C22B1/243 ,  Y02P10/136

摘要： Disclosed is a process for the heat treatment of fine-grained iron ore and for the conversion of the heat-treated iron ore to metallic iron, whereina) the fine iron ore is reacted with at least one binder to produce particles having a particle size of >0.1 to 5 mm,b) the particles according to process stage (a) are dried,c) the particles dried according to process stage (b) are heat-treated at a temperature of 700.degree. to 1100.degree. C., andd) the heat-treated particles are reacted to form metallic iron.

摘要翻译： 公开了一种用于细粒铁矿石的热处理和将热处理的铁矿石转化成金属铁的方法，其中a）细铁矿石与至少一种粘合剂反应以产生具有粒度的颗粒 > 0.1〜5mm，b）将工序（a）中的粒子干燥，c）按照工序（b）干燥的粒子在700〜1100℃的温度下进行热处理， d）热处理颗粒反应形成金属铁。

公开(公告)号：US5527379A

公开(公告)日：1996-06-18

申请号：US261257

申请日：1994-06-17

申请人： Martin Hirsch ,  Reza Husain ,  Alpaydin Saatci ,  Wolfgang Bresser

发明人： Martin Hirsch ,  Reza Husain ,  Alpaydin Saatci ,  Wolfgang Bresser

IPC分类号： C21B13/00 ,  C21B13/14

CPC分类号： C21B13/0033 ,  C21B13/14 ,  Y02P10/136 ,  Y02P10/216

摘要： In order to effect a reduction and a carburization to form Fe.sub.3 C to the highest possible degree in a relatively short time in an economical process, a treatment in two stages is effected in fluidized beds. The first stage is effected in a circulating fluidized bed system, in which the amount of solids circulated per hour is at least five times the weight of solids contained in the fluidized bed reactor and a major part of the iron content of the charge is pre-reduced. The remaining reduction and the partial or complete conversion to Fe.sub.3 C are effected in the second stage in a conventional fluidized bed. Water is condensed from the exhaust gas from the circulating fluidized bed system and that gas is strengthened by an addition of reducing gases and is reheated to the temperature which is required for the process. A part of the reheated recycle gas is supplied as a fluidizing gas to the conventional fluidized bed and the other part of the recycle gas is supplied as a fluidizing gas to the fluidized bed reactor of the circulating fluidized bed. The exhaust gas from the conventional fluidized bed is supplied as a secondary gas to the fluidized bed reactor of the circulating fluidized bed system.

摘要翻译： 为了在经济的方法中在相当短的时间内尽可能地最大程度地进行还原和渗碳以形成Fe 3 C，在流化床中进行两个阶段的处理。 第一阶段在循环流化床系统中实现，其中每小时循环的固体量至少为流化床反应器中所含固体重量的5倍，并且电荷的铁含量的主要部分是预先 减少 剩余的还原和部分或完全转化为Fe 3 C在常规流化床的第二阶段进行。 水从循环流化床系统的废气中冷凝，并且通过加入还原气体来加强气体，并将其再加热到该方法所需的温度。 再循环气体的一部分作为流化气体供给到常规流化床，另一部分循环气体作为流化气体供给到循环流化床的流化床反应器。 来自常规流化床的废气作为二次气体供应到循环流化床系统的流化床反应器。

公开(公告)号：US06599374B1

公开(公告)日：2003-07-29

申请号：US09529241

申请日：2000-06-26

申请人： Martin Hirsch ,  Alpaydin Saatci

发明人： Martin Hirsch ,  Alpaydin Saatci

IPC分类号： C23C820

CPC分类号： C21B13/0086 ,  C21B13/0033 ,  Y02P10/136 ,  Y02P10/143

摘要： An end product containing iron carbide (Fe3C) is produced from an intermediate product consisting of granular, directly reduced iron. Said intermediate product is supplied by an iron ore reduction plant and is fed to a carburization reactor. Liquid hydrocarbons are conveyed to the carburization reactor at temperatures of 500 to 900° C., at least part of the granular, directly reduced iron being subjected to a swirling movement. The end product removed from the carburization reactor consists of 5 to 90 wt. % Fe3C. A fluidization gas containing methane and hydrogen can be added to the carburization reactor in addition to the hydrocarbons.

摘要翻译： 含有碳化铁（Fe 3 C）的最终产品由由粒状的直接还原铁构成的中间产物生产。 所述中间产物由铁矿石还原装置供应并进料至渗碳反应器。 液体烃在500至900℃的温度下被输送到渗碳反应器，至少部分颗粒状直接还原的铁经受旋转运动。 从渗碳反应器中除去的最终产物由5至90wt。 ％Fe3C。 含有甲烷和氢气的流化气体除了烃之外还可以加入到渗碳反应器中。

公开(公告)号：US5603748A

公开(公告)日：1997-02-18

申请号：US634737

申请日：1996-04-18

申请人： Martin Hirsch ,  Reza Husain ,  Alpaydin Saatci ,  Wolfgang Bresser

发明人： Martin Hirsch ,  Reza Husain ,  Alpaydin Saatci ,  Wolfgang Bresser

IPC分类号： C21B13/00 ,  C21B13/14

CPC分类号： C21B13/0033 ,  C21B13/14 ,  Y02P10/136 ,  Y02P10/216

摘要： In order to effect a reduction and a carburization to form Fe.sub.3 C to the highest possible degree in a relatively short time in an economical process, a treatment in two stages is effected in fluidized beds. The first stage is effected in a circulating fluidized bed system, in which the amount of solids circulated per hour is at least five times the weight of solids contained in the fluidized bed reactor and a major part of the iron content of the charge is pre-reduced. The remaining reduction and the partial or complete conversion to Fe.sub.3 C are effected in the second stage in a conventional fluidized bed. Water is condensed from the exhaust gas from the circulating fluidized bed system and that gas is strengthened by an addition of reducing gases and is reheated to the temperature which is required for the process. A part of the reheated recycle gas is supplied as a fluidizing gas to the conventional fluidized bed and the other part of the recycle gas is supplied as a fluidizing gas to the fluidized bed reactor of the circulating fluidized bed. The exhaust gas from the conventional fluidized bed is supplied as a secondary gas to the fluidized bed reactor of the circulating fluidized bed system.

摘要翻译： 为了在经济的方法中在相当短的时间内尽可能地最大程度地进行还原和渗碳以形成Fe 3 C，在流化床中进行两个阶段的处理。 第一阶段在循环流化床系统中实现，其中每小时循环的固体量至少为流化床反应器中所含固体重量的5倍，并且电荷的铁含量的主要部分是预先 减少 剩余的还原和部分或完全转化为Fe 3 C在常规流化床的第二阶段进行。 水从循环流化床系统的废气中冷凝，并且通过加入还原气体来加强气体，并将其再加热到该方法所需的温度。 再循环气体的一部分作为流化气体供给到常规流化床，另一部分循环气体作为流化气体供给到循环流化床的流化床反应器。 来自常规流化床的废气作为二次气体供应到循环流化床系统的流化床反应器。

公开(公告)号：US5162107A

公开(公告)日：1992-11-10

申请号：US630484

申请日：1990-12-20

申请人： Martin Hirsch ,  Albert Kaune ,  Alpaydin Saatci ,  Karlheinz Broj ,  Uwe Harter ,  Walter Meichsner

发明人： Martin Hirsch ,  Albert Kaune ,  Alpaydin Saatci ,  Karlheinz Broj ,  Uwe Harter ,  Walter Meichsner

IPC分类号： C22B7/00 ,  C22B7/02 ,  C22B13/02 ,  C22B19/04 ,  C22B19/30

CPC分类号： C22B7/02 ,  C22B7/004 ,  Y02P10/212 ,  Y10S423/16

摘要： A zinc- and lead-containing residue from a metallurgical plant is reprocessed by a thermal treatment in a circulating fluidized bed system. A major part of the heat demand is satisfied by a combustion of solid carbonaceous material in the fluidized bed reactor of the circulating fluidized bed system. A reducing fluidizing gas, which is virtually free of free oxygen, is fed to the lower part of the fluidized bed reactor. A solid carbon content of from 5 to 30% is adjusted in the fluidized bed in the lower portion of the fluidized bed reactor, which is supplied in its upper portion with oxygen-containing gases and in which CO.sub.2 is formed only at such a rate that zinc metal is not reoxidized. Substantially all solids are removed in a recycling cyclone from the suspension discharged from the reactor and the removed solids are recycled. The gas is cooled to a temperature at which zinc metal is oxidized to ZnO. The dust-like zinc compounds and lead compounds are removed from the gas.

摘要翻译： 来自冶金厂的含锌和铅的残余物通过在循环流化床系统中的热处理来再加工。 通过在循环流化床系统的流化床反应器中固体碳质材料的燃烧来满足热需求的主要部分。 将实质上不含游离氧的还原流化气体进料到流化床反应器的下部。 在流化床反应器的下部的流化床中调节固体碳含量为5至30％，流化床的上部部分含有含氧气体，其中仅形成二氧化碳的速率为 锌金属不再氧化。 基本上所有的固体在循环旋风分离器中从从反应器排出的悬浮液中除去，并且将去除的固体再循环。 将气体冷却至锌金属氧化成ZnO的温度。 从气体中除去尘埃状的锌化合物和铅化合物。