公开(公告)号：US5785733A

公开(公告)日：1998-07-28

申请号：US702517

申请日：1996-10-28

申请人： Il Ock Lee ,  Yong Ha Kim ,  Bong Jin Jung ,  Hang Goo Kim ,  Franz Hauzenberger

发明人： Il Ock Lee ,  Yong Ha Kim ,  Bong Jin Jung ,  Hang Goo Kim ,  Franz Hauzenberger

IPC分类号： C21B11/00 ,  C21B13/00 ,  C21B13/14

CPC分类号： C21B13/002 ,  C21B13/0033 ,  C21B13/14 ,  Y02P10/136 ,  Y02P10/216

摘要： A reduction apparatus and a method for efficient reduction of fine iron ores of wide grain range comprising serially arranged a drying/preheating furnace, a first reducing furnace for prereduction and a second reduction furnace for final reduction, each working with bubbling fluidized bed and being connected each to a cyclone for capturing iron ore dust contained in the exhaust gases, having each a tapered shape smoothly expanded outwards and thus considerably decreasing elutriation of fine particles, increasing the reduction efficiency and enhancing the utilization of the reducing gas.

摘要翻译： PCT No.PCT / KR95 / 00182 Sec。 371日期1996年10月28日第 102（e）日期1996年10月28日PCT提交1995年12月28日PCT公布。 出版物WO96 / 21045 日期：1996年7月11日一种用于有效还原宽晶粒范围的细铁矿的还原装置和方法，包括串联布置的干燥/预热炉，用于预还原的第一还原炉和用于最终还原的第二还原炉，每个都用起泡 流化床并且各自连接到旋风分离器，用于捕获废气中含有的铁矿石粉尘，每个锥形形状向外平滑地膨胀，从而大大减少细颗粒的淘析，从而提高还原效率并增强还原气体的利用。

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：US5571475A

公开(公告)日：1996-11-05

申请号：US318981

申请日：1994-10-06

申请人： Ralph Weber

发明人： Ralph Weber

IPC分类号： C21B11/02 ,  C21B13/00 ,  C21B13/14 ,  C21B13/02

CPC分类号： C21B13/002 ,  Y02P10/136

摘要： In a process and an apparatus for the production of liquid metal (4) from fine-grain metal oxide particles, the particles, together with hot reducing gas, are blown against a heated bulk material filter layer (9) of lump coal and/or ceramic pieces, a substantial proportion of the particles being retained on and in the filter layer and subjected to finishing reducing by the reducing gas. A high-temperature flame is produced in front of the filter layer (9) by an oxygen-bearing gas being blown against the filter layer, and the metallised particles which are retained in the filter layer are melted. They pass in the liquid condition through the filter layer (9) into a receiving space (3) for liquid metal (4).

摘要翻译： 在由细粒金属氧化物颗粒生产液体金属（4）的方法和装置中，将颗粒与热还原气体一起吹送到块煤的加热散装材料过滤层（9）和/或 陶瓷片，大部分颗粒保留在过滤层上和过滤层中，并通过还原气体进行精加工还原。 在过滤层（9）的前方通过向过滤层吹送含氧气体而产生高温火焰，并且保留在过滤层中的金属化粒子熔融。 它们通过过滤层（9）通过液体状态进入液态金属（4）的容纳空间（3）。

公开(公告)号：US5567224A

公开(公告)日：1996-10-22

申请号：US470311

申请日：1995-06-06

申请人： David M. Kundrat

发明人： David M. Kundrat

IPC分类号： C21B13/08 ,  C21B13/10 ,  C21C5/00 ,  C22B5/10 ,  C22C33/00 ,  C22C35/00 ,  C21B13/14

CPC分类号： C21B13/105 ,  C21B13/10 ,  C21C5/005 ,  C22B5/10 ,  C22C33/006 ,  C22C35/005 ,  Y02P10/136

摘要： Method of reducing metal oxide in a rotary hearth furnace (14) to make a feed stock for a refining vessel when manufacturing alloyed iron, alloyed steel or stainless steel. The rotary hearth furnace includes an annular inner refractory wall (32), an annular outer refractory wall (34), an annular refractory platform (33) between the two walls. Stationary fuel burners (36, 40) are mounted to walls (32, 34) at a position just above an upper surface of the platform. A mixture of a metal oxide and a carbonaceous reductant is placed onto the upper surface of the platform and rotated past the burners. The oxide is heated by an oxidizing flame. Thereafter, a second layer of a reductant is charged over the hot first layer, and both layers are heated for an additional period of time to a temperature of at least 1300.degree. C. to reduce the metal oxide. The metal oxide may be chromium ore, chromium ore concentrate, nickel ore, nickel ore concentrate and stainless steel flue dust. The reductant may be coal or coke. The reduced metals provide inexpensive metal units for alloying with molten iron.

摘要翻译： 在制造合金铁，合金钢或不锈钢时，在转底炉（14）中还原金属氧化物以制备精炼容器的原料的方法。 旋转炉床炉包括环形内耐火壁（32），环形外耐火壁（34），在两壁之间的环形耐火平台（33）。 固定燃料燃烧器（36,40）在刚好在平台的上表面上方的位置安装到壁（32,34）。 将金属氧化物和碳质还原剂的混合物放置在平台的上表面上并旋转经过燃烧器。 氧化物被氧化火焰加热。 此后，将第二层还原剂加入到热的第一层上，并将两个层再加热至至少1300℃的温度以还原金属氧化物。 金属氧化物可以是铬矿，铬精矿，镍矿，镍矿精矿和不锈钢烟尘。 还原剂可以是煤或焦炭。 还原金属提供便宜的金属单元，用于与铁水合金化。

公开(公告)号：US5535991A

公开(公告)日：1996-07-16

申请号：US461711

申请日：1995-06-05

申请人： Werner Kepplinger ,  Panajiotis Matzawrakos ,  Johannes Schenk ,  Dieter Siuka ,  Christian Bohm

发明人： Werner Kepplinger ,  Panajiotis Matzawrakos ,  Johannes Schenk ,  Dieter Siuka ,  Christian Bohm

IPC分类号： C22B1/14 ,  C21B5/00 ,  C21B11/00 ,  C21B11/02 ,  C21B13/00 ,  C21B13/14 ,  F27B1/20 ,  F27B1/21 ,  F27B15/10 ,  F27B15/14 ,  F27D3/10 ,  F27D13/00 ,  C22B5/14

CPC分类号： C21B13/14 ,  C21B13/002 ,  Y02P10/122 ,  Y02P10/136 ,  Y02P10/265 ,  Y02P10/283

摘要： A process for producing molten pig iron or molten steel pre-products from charging substances formed of iron ores and fluxes and at least partially comprising fines, wherein the charging substances are directly reduced to sponge iron in at least one reduction zone by the fluidized layer process, the sponge iron is melted in a melting-gasifying zone under supply of carbon carriers and oxygen-containing gas, and a CO and H.sub.2 -containing reducing gas is produced, which is injected into the reduction zone, is reacted there, is withdrawn as an export gas and is supplied to a consumer, is to be improved with a view to rendering feasible the use of fine ore in an economic manner. This is effected in thatprimarily hematite and/or magnetite fine ores and/or ore dusts are subjected to preheating by the fluidized layer process in a preheating zone,the thus preheated charging substances are completely reduced to a major extent in at least one consecutively arranged reduction zone,whereupon at least the more finely particulate charging substances are charged into the fluidized bed and/or, if desired, also into the fixed bed, of the melting-gasifying zone by forced conveyance, preferably by pneumatic conveyance, and are melted there.

摘要翻译： 一种从由铁矿石和助熔剂形成的至少部分包含细粉的装料物质生产熔融生铁或钢水预制物的方法，其中所述带电物质通过流化层方法直接还原成至少一个还原区中的海绵铁 在供给碳载体和含氧气体的情况下，在熔融气化区中熔融海绵铁，并且将注入还原区的CO和H 2还原气体在其上反应，作为 要向消费者提供出口天然气，并进行改善，以便以经济的方式使细矿石成为可能。 这是因为主要是赤铁矿和/或磁铁矿细矿石和/或矿石粉尘通过预热区域中的流化层工艺进行预热，因此预热的带电物质在至少一个连续布置 因此，优选通过强制输送，优选通过气动输送将至少更细粒度的带电物质装入熔融气化区的流化床和/或如果需要也进入固定床，并在那里熔化 。

公开(公告)号：US5514203A

公开(公告)日：1996-05-07

申请号：US419146

申请日：1995-04-10

申请人： Herbert Grunbacher ,  Leopold-Werner Kepplinger ,  Franz Reufer ,  Gunter Schrey

发明人： Herbert Grunbacher ,  Leopold-Werner Kepplinger ,  Franz Reufer ,  Gunter Schrey

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。

公开(公告)号：US5429658A

公开(公告)日：1995-07-04

申请号：US218792

申请日：1994-03-28

申请人： Richard B. Greenwalt

发明人： Richard B. Greenwalt

IPC分类号： C21B13/00 ,  C21B13/14

CPC分类号： C21B13/14 ,  C21B13/002 ,  C21B13/0066 ,  Y02P10/136 ,  Y02P10/216

摘要： The invention relates to a method for processing environmentally undesirable materials including petroleum coke and the sulfur and heavy metals contained therein and oily steel and iron ferrous waste from machine shop and steel and iron processing to provide fuel and a charging material for a process of making molten iron or steel preproducts and reduction gas in a melter gasifier.

摘要翻译： 本发明涉及一种用于处理环境不合需要的材料的方法，包括石油焦炭及其中所含的硫和重金属，以及来自机加工车间和钢铁加工的油性钢铁和铁铁废料，以提供燃料和用于使熔融 铁或钢前处理产物和还原气体在熔化炉气化炉中。

公开(公告)号：US5402990A

公开(公告)日：1995-04-04

申请号：US162936

申请日：1993-12-08

申请人： Ghulam Nabi

发明人： Ghulam Nabi

IPC分类号： C21B13/14 ,  C21C5/56 ,  C21B13/12

CPC分类号： C21B13/14 ,  C21C5/567 ,  Y02P10/122 ,  Y02P10/126 ,  Y02P10/136

摘要： This invention provides a method and appratus whereby steel of various compositions may be produced from iron ore and coal through a series of stages without the intermediate production of liquid iron. A reforming reactor receives top gases from the steel making reactors, and converts them to high reduction potential gases which are returned to the steel making reactors. The iron ore and reductants, such as coal, are charged to a controlled atmosphere reactor which may be an inclined rotary cylindrical shaft. From the controlled atmosphere reactor the charge is moved to a potential shift reactor which is inclined or vertical and encounters increasing heat and rising gases for converting the carbonised sponge into a semi-molten state. The charge then passes to a high temperature reactor where it encounters the reducing gases from the reforming reactor and preheated oxygen to create temperature in which steel is made. Hot gases from the high temperature reactor pass through the PSR and the CAR and are returned to the reforming reactors to complete the cycle.

摘要翻译： 本发明提供了一种方法和装置，其中可以通过一系列阶段从铁矿石和煤生产各种组合物的钢而不中间生产液态铁。 重整反应器接收来自炼钢反应器的顶部气体，并将其转化为高还原性气体，这些气体返回到炼钢反应器。 将铁矿石和还原剂（例如煤）装入可控的气氛反应器中，该反应器可以是倾斜的旋转圆柱形轴。 从受控气氛反应器中，将电荷移动到倾斜或垂直的电位变换反应器，并且遇到增加的热量和上升的气体以将碳化海绵转化为半熔融状态。 然后，电荷传递到高温反应器，在那里它遇到来自重整反应器的还原气体和预热的氧气以产生制造钢的温度。 来自高温反应器的热气体通过PSR和CAR，并返回到重整反应器以完成循环。

公开(公告)号：US5401295A

公开(公告)日：1995-03-28

申请号：US025651

申请日：1993-03-03

申请人： Karl Brotzmann

发明人： Karl Brotzmann

IPC分类号： C21B11/02 ,  C21B11/00 ,  C21B13/14 ,  C22B5/00 ,  C22B5/10

CPC分类号： C21B13/002 ,  C21B13/14 ,  Y02P10/136 ,  Y02P10/265 ,  Y02P10/283

摘要： The invention relates to a method for smelting reduction of metal ores involving a combination process wherein the metal ores are partly reduced in one or more stages and then completely reduced to metal in a melt-down reactor. The combination process comprises at least three process units, and the melt-down reactor forms one process unit. The partial reduction of the metal ores is performed in at least two further process units. A different waste gas is produced in each of these at least three process units.

摘要翻译： 本发明涉及一种熔融还原金属矿石的方法，涉及一种组合方法，其中金属矿石在一个或多个阶段部分还原，然后在熔化反应器中完全还原成金属。 组合方法包括至少三个处理单元，并且熔化反应器形成一个处理单元。 在至少两个其它处理单元中进行金属矿石的部分还原。 在这些至少三个处理单元中的每一个中产生不同的废气。

公开(公告)号：US5294244A

公开(公告)日：1994-03-15

申请号：US097661

申请日：1993-07-27

申请人： Hugh G. Allerton, III ,  James L. Coburn ,  Bernie M. Thames ,  Dennis S. Bal

发明人： Hugh G. Allerton, III ,  James L. Coburn ,  Bernie M. Thames ,  Dennis S. Bal

IPC分类号： B60R21/26 ,  B09B3/00 ,  C21B3/04 ,  C22B7/00 ,  C22B21/00 ,  C21B13/14

CPC分类号： C22B21/0092 ,  C21B3/04 ,  C22B7/004 ,  Y02P10/218 ,  Y02W30/542

摘要： A method of recovering an aluminum alloy and a stainless steel alloy from an air bag inflator 10 that has aluminum alloy parts, including an aluminum alloy housing 12 and non-aluminum alloy parts, including a non-aluminum gas filter 18. The non-aluminum parts have a higher melting temperature than the aluminum alloy parts of the air bag inflator 10. The method comprises heating the air bag inflator 10 in the range of the melting temperature of aluminum and then recovering the aluminum alloy which is not contaminated with the material of the higher melting temperature parts. After the aluminum alloy has melted from the air bag inflator 10, the non-aluminum parts are heated to a higher temperature to melt any stainless steel alloy from the non-aluminum parts. The stainless steel alloy is recovered as a high purity stainless steel alloy end product.

摘要翻译： 从具有铝合金部件的气囊充气机10回收铝合金和不锈钢合金的方法，该铝合金部件包括铝合金外壳12和非铝合金部件，其包括非铝气体过滤器18.非铝 部件具有比气囊充气机10的铝合金部件更高的熔融温度。该方法包括在铝的熔化温度范围内加热气囊充气机10，然后回收不被材料的 熔点较高的部件。 在铝合金从气囊充气机10熔化之后，将非铝部件加热到更高的温度，以从非铝部件熔化任何不锈钢合金。 不锈钢合金作为高纯度不锈钢合金终产品回收。