公开(公告)号：US20090308205A1

公开(公告)日：2009-12-17

申请号：US12298501

申请日：2007-04-24

Applicant: Rodney James Dry

Inventor： Rodney James Dry

IPC: C22B5/00 ,  C21C5/38 ,  C21D11/00

CPC classification number: F27D17/004 ,  C21B13/0013 ,  C21B13/0073 ,  C21B13/143 ,  C21B2100/42 ,  C21B2100/62 ,  C21B2100/66 ,  C21C5/56 ,  C21C2100/02 ,  C21C2100/06 ,  F27B3/225 ,  F27B3/26 ,  F27D13/00 ,  F27D19/00 ,  Y02P10/136

Abstract: A direct smelting plant for producing molten metal from metalliferous feed material in a direct smelting process is disclosed. The plant includes a process controller for adjusting the volumetric flow rate of fuel gas supplied to a burner unit of at least one of the unit operations of the plant so as to at least meet selected requirements of the plant to operate the direct smelting process.

Abstract translation: 公开了一种用于在直接熔炼过程中从含金属原料生产熔融金属的直接熔炼设备。 该设备包括一个过程控制器，用于调节供应给燃烧器单元的燃料气体的体积流量，该燃料气体至少能够满足工厂的单元操作中的至少一个操作，从而至少满足工厂直接冶炼过程的选定要求。

公开(公告)号：US06585929B1

公开(公告)日：2003-07-01

申请号：US09587774

申请日：2000-06-06

Applicant: Cecil Peter Bates ,  Peter Damian Burke ,  Rodney James Dry

Inventor： Cecil Peter Bates ,  Peter Damian Burke ,  Rodney James Dry

IPC: C21B700

CPC classification number: C21B13/0026 ,  C21B13/0006 ,  F27B3/10 ,  F27B3/12 ,  F27B3/225 ,  F27D3/1545 ,  F27D3/18 ,  F27D17/001 ,  Y02P10/136

Abstract: A direct smelting vessel which is adapted to contain a molten bath of metal and slag is disclosed. The vessel includes an off-gas duct that has: (a) a first section which has a relatively slight upward inclination to the horizontal from an inlet end of the first section; and (b) a second section which extends upwardly from an upper end of the first section at a relatively steep inclination to the horizontal.

Abstract translation: 公开了一种适于容纳金属和熔渣的熔池的直接熔炼炉。 该容器包括一个废气管道，该废气管道具有：（a）第一部分，与第一部分的入口端相比，具有比水平方向稍微向上倾斜的第一部分; 和（b）第二部分，其以相对于水平方向相对陡峭的倾斜从第一部分的上端向上延伸。

公开(公告)号：US06478848B1

公开(公告)日：2002-11-12

申请号：US09509286

申请日：2000-03-21

Applicant: Carolyn Anne McCarthy ,  Rodney James Dry ,  Tara Ellen Goldsworthy

Inventor： Carolyn Anne McCarthy ,  Rodney James Dry ,  Tara Ellen Goldsworthy

IPC: C21B1100

CPC classification number: C22B5/10 ,  C21B13/0013 ,  C21B13/0026 ,  C21C5/4606 ,  C21C5/56 ,  C21C7/0037 ,  C21C7/0087 ,  F27B3/045 ,  F27B3/085 ,  F27B3/19 ,  F27B3/225 ,  F27D3/0026 ,  F27D3/18 ,  F27D9/00 ,  Y02P10/136

Abstract: A direct smelting process for producing metal from a metalliferous feed material is disclosed. The direct smelting process is a molten bath-based process in which smelting occurs predominantly in the metal layer, carrier gas/metalliferous feed material/solid carbonaceous material are injected into the metal layer via lances/tuyeres, and oxygen-containing gas is injected into the top space above the molten bath and post-combusts reaction gases released from the bath. The injection of metalliferous feed material and solid carbonaceous material causes molten material to be projected from the molten bath as splashes, droplets and streams and to form a transition zone. The process is characterized by forming a pipe of a solid material on an outlet end of at least one lance/tuyere while injecting the metalliferous feed material and the carbonaceous material through the lances/tuyeres and thereby extending the effective length of the lance/tuyere or the lances/tuyeres.

Abstract translation: 公开了一种用于从含金属进料生产金属的直接熔炼方法。 直接熔炼工艺是熔融浴法，熔融主要发生在金属层中，载气/含金属进料/固体碳质材料通过喷枪/风口注入金属层，并将含氧气体注入 在熔池之上的顶部空间，并且从浴中释放反应气体。 注入含金属的进料和固体碳质材料会导致熔融材料从熔池中溅出，如飞溅，液滴和流，并形成过渡区。 该方法的特征在于在至少一个喷枪/风口的出口端上形成固体材料管，同时通过喷枪/风口注入含金属进料和含碳材料，从而延长喷枪/风口的有效长度， 长枪/风口

公开(公告)号：US06475264B1

公开(公告)日：2002-11-05

申请号：US09509290

申请日：2000-03-21

Applicant: Rodney James Dry

Inventor： Rodney James Dry

IPC: C21B1314

CPC classification number: C21B13/14 ,  C21C5/56 ,  C22B5/10 ,  Y02P10/122 ,  Y02P10/128 ,  Y02P10/136 ,  Y10S75/958

Abstract: A process for direct smelting a metalliferous feed material is disclosed. The process includes the steps of partially reducing metalliferous feed material and substantially devolatilising coal in a pre-reduction vessel and producing a partially reduced metalliferous feed material and char. The process also includes direct smelting the partially reduced metalliferous feed material to molten metal in a direct smelting vessel using the char as a source of energy and as a reductant and post-combusting reaction gas produced in the direct smelting process with pre-heated air or oxygen-enriched air to a post-combustion level of greater than 70% to generate heat required for the direct smelting reactions and to maintain the metal in a molten state.

Abstract translation: 公开了一种用于直接熔炼含金属进料的方法。 该方法包括以下步骤：在预还原容器中部分还原含金属进料和基本上脱挥发分的煤，并产生部分还原的含金属进料和炭。 该方法还包括使用焦炭作为能量来直接熔炼部分还原的含金属进料到直接熔炼容器中的熔融金属，以及作为直接熔炼过程中产生的还原剂和后燃烧反应气体与预热的空气或 富氧空气达到大于70％的后燃烧水平以产生直接熔炼反应所需的热量并将金属保持在熔融状态。

公开(公告)号：US06379422B1

公开(公告)日：2002-04-30

申请号：US09632730

申请日：2000-08-04

Applicant: Rodney James Dry

Inventor： Rodney James Dry

IPC: C21B1100

CPC classification number: C21B13/0026 ,  C21B13/14 ,  C21B2100/42 ,  C21B2100/62 ,  C21B2100/66 ,  Y02P10/136 ,  Y10S75/958

Abstract: A process for direct smelting metalliferous feed material is disclosed. Iron oxides are partially reduced in a solid state in a pre-reduction vessel. The partially reduced iron oxides are smelted to molten iron in a direct smelting vessel which contains a molten bath of iron and slag and is supplied with a solid carbonaceous material as a source of reductant and energy and with an oxygen-containing gas for post-combusting carbon monoxide and hydrogen generated in the vessel. The direct smelting step generates an off-gas that contains sulphur and the off-gas is released from the direct smelting vessel. Part only of the off-gas released from the direct smelting vessel is used in the pre-reduction step to pre-reduce iron oxides in the pre-reduction vessel. Part only of the off-gas is used in the pre-reduction step in order to control the amount of sulphur that is returned with the partially reduced iron oxides to the direct smelting vessel.

Abstract translation: 公开了一种用于直接熔炼含金属进料的方法。 铁氧化物在预还原容器中以固态部分还原。 部分还原的氧化铁在含有铁和渣的熔池的直接熔炼容器中熔炼成铁水，并且供给固体碳质材料作为还原剂和能量的来源以及用于后燃烧的含氧气体 在容器中产生的一氧化碳和氢气。 直接熔炼步骤产生含有硫的废气，废气从直接熔炼容器中释放出来。 在预还原步骤中，仅使用从直接熔炼容器释放的废气中的部分来预还原预还原容器中的氧化铁。 为了控制与部分还原的氧化铁返回到直接熔炼容器的硫的量，在预还原步骤中仅使用废气。

公开(公告)号：US06273934B1

公开(公告)日：2001-08-14

申请号：US09269981

申请日：1999-07-13

Applicant: Rodney James Dry

Inventor： Rodney James Dry

IPC: C21B1100

CPC classification number: C21B13/14 ,  C22B1/00 ,  C22B5/12 ,  C22B5/18 ,  Y02P10/136 ,  Y02P10/143

Abstract: A method of producing metals and metal alloys from metal oxides is disclosed. The method comprises the steps of partially pre-reducing the metal oxides to a pre-reduction degree of at least 60% in one or more pre-reduction stages. Thereafter, the method comprises completely reducing the metal oxides and melting the metal in a smelt reduction stage. The method is further characterized by carrying out at least one of the pre-reduction stages with one or more of natural gas, reformed natural gas, and partially reformed natural gas as a source of reductant.

Abstract translation: 公开了一种从金属氧化物生产金属和金属合金的方法。 该方法包括在一个或多个预还原阶段中将金属氧化物部分预还原至至少60％的预还原度的步骤。 此后，该方法包括在熔融还原阶段完全还原金属氧化物并熔化金属。 该方法的特征还在于，使用天然气，重整天然气和部分重整天然气中的一种或多种作为还原剂的来源进行至少一个预还原阶段。

公开(公告)号：US06174346B1

公开(公告)日：2001-01-16

申请号：US09068044

申请日：1998-07-28

Applicant: John Alexander Innes ,  Rodney James Dry

Inventor： John Alexander Innes ,  Rodney James Dry

IPC: C21B1314

CPC classification number: F27B19/04 ,  C21B13/143 ,  C21B2100/60 ,  C21B2100/64 ,  Y02P10/136

Abstract: The production of highly metallized feed, an intermediate product produced solely by gaseous reductants in two stage reduction processes of that kind, encounters sticking problems, which interfere with continuous processing and productivity. This problem has been overcome by exploiting a high volatile carbonaceous material, such as coal, as the reducing agent for the (partially reduced) oxide ore starting material in the solid state prereduction stage of a duplex process, in which the final stage consists of smelting, to produce the final metal (alloy). Intermediate products of the first stage are char from the coal, which avoids the sticking problem, partially reduced ore and CO and H2, which participate in the prereduction. The process has particular application to iron ores, such as haematite and magnetite and similar derivatives, namely, chromite and oxidic nickel ores. The process may be extended to a triplex, which includes drying, preheating and partial reduction in the first stage, followed by further partial reduction and finally the smelting step. The final stage of solid state reduction takes place at a temperature of at least 550° C., preferably 750-900° C. At least 50% of metallization is essential for satisfactory processing, preferably at least 80%.

Abstract translation: 高度金属化的原料的生产，这种仅在这种两阶段还原过程中由气态还原剂生产的中间产物遇到了干扰连续加工和生产率的粘附问题。 通过在双相过程的固态预还原阶段中利用高挥发性碳质材料（如煤）作为（部分还原）氧化物矿石原料的还原剂，克服了这个问题，其中最终阶段由冶炼 ，以生产最终的金属（合金）。 第一阶段的中间产品是煤炭，避免了粘附问题，部分还原矿石和CO和H2，参与了预还原。 该方法特别适用于铁矿石，如赤铁矿和磁铁矿及类似衍生物，即铬铁矿和氧化镍矿。 该方法可以扩展到三元组，其包括在第一阶段中的干燥，预热和部分还原，随后进一步部分还原，最后是熔融步骤。 固态还原的最后阶段在至少550℃，优选750-900℃的温度下进行。至少50％的金属化对于令人满意的加工是必需的，优选至少80％。

公开(公告)号：US20130180361A1

公开(公告)日：2013-07-18

申请号：US13823308

申请日：2011-09-15

Applicant: Rodney James Dry ,  Jacques Pilote

Inventor： Rodney James Dry ,  Jacques Pilote

IPC: C21B13/00

CPC classification number: C21B13/0006 ,  C21B5/04 ,  C21B11/02 ,  C21B13/0013 ,  C21C5/54 ,  Y02P10/136 ,  Y02P10/216

Abstract: A molten bath-based direct smelting process includes controlling the process conditions in a direct smelting vessel so that molten slag in a molten bath of metal and slag in the vessel has a viscosity in a range of 0.5-5 poise in an operating temperature range for the process.

Abstract translation: 基于熔融浴的直接熔炼方法包括控制直接熔炼容器中的工艺条件，使得在容器中的金属和熔渣的熔池中的熔渣在0.5-5泊的范围内在工作温度范围内 的过程。

公开(公告)号：US07935172B2

公开(公告)日：2011-05-03

申请号：US10587469

申请日：2005-01-31

Applicant: Rodney James Dry ,  Robin John Batterham

Inventor： Rodney James Dry ,  Robin John Batterham

IPC: C21C7/076 ,  C21B13/12

CPC classification number: C21B13/008 ,  C21B3/04 ,  C21B13/0013 ,  C21C5/36 ,  C21C5/56 ,  C22B5/10 ,  C22B7/04 ,  Y02P10/216 ,  Y02W30/542

Abstract: A steelmaking process is disclosed. The process includes producing molten steel and molten steelmaking slag in a steelmaking process, the steelmaking slag including iron units and flux units, and thereafter producing molten iron in a molten bath based direct smelting process using a substantial portion of the steelmaking slag as part of the feed material requirements for the direct smelting process. A direct smelting process is also disclosed. The process includes pre-treating ferrous material including steelmaking slag and thereafter direct smelting molten iron using the pretreated ferrous material as part of the feed material for the process.

Abstract translation: 公开了炼钢工艺。 该方法包括在炼钢过程中生产钢水和炼钢渣，钢铁炉渣包括铁单元和助熔剂单元，然后在基于熔池的直接熔炼过程中生产铁水，其中使用大部分钢铁渣作为 饲料要求直接冶炼过程。 还公开了直接熔炼过程。 该方法包括预处理含铁材料，包括炼钢渣，此后使用预处理的铁质材料直接熔炼铁水作为该方法的原料的一部分。

公开(公告)号：US06602321B2

公开(公告)日：2003-08-05

申请号：US09873588

申请日：2001-06-04

Applicant: Rodney James Dry ,  Robin John Batterham

Inventor： Rodney James Dry ,  Robin John Batterham

IPC: C21C530

CPC classification number: C21B13/0013 ,  C21B11/00 ,  C21B13/0026 ,  C21C5/305 ,  C21C5/35 ,  C21C2005/366 ,  C22B5/10 ,  C22B7/001 ,  Y02P10/136 ,  Y02P10/214

Abstract: A direct smelting process and a fixed, ie non-rotatable, metallurgical vessel for producing metal from a metalliferous feed material is disclosed. The process is a molten bath-based process which includes injecting solid feed materials with a carrier gas into the molten bath via one or more downwardly extending lance/tuyere (11) and causing gas flow from the molten bath at a flow rate of at least 0.30 Nm3/s/m2 at the interface between the metal layer (15) and the slag layer (16) of the molten bath (under quiescent conditions).