公开(公告)号：US20170342514A1

公开(公告)日：2017-11-30

申请号：US15537965

申请日：2015-09-15

Applicant: SUMITOMO METAL MINING CO., LTD.

Inventor： Junichi Takahashi ,  Taku Inoue ,  Shuuji Okada

IPC: C21B13/10 ,  C22B5/10 ,  C22B1/24 ,  C22B23/02 ,  C21B13/08

CPC classification number: C21B13/10 ,  C21B13/08 ,  C22B1/2406 ,  C22B1/245 ,  C22B5/10 ,  C22B23/005 ,  C22B23/021 ,  C22B23/023 ,  C22C1/023

Abstract: Provided is a smelting method capable of effectively promoting a reduction reaction on pellets formed using nickel oxide ore as starting material to obtain a ferronickel alloy with a high nickel grade of at least 4%. The present invention is a method for smelting nickel oxide ore wherein ferronickel alloy with a nickel grade of at least 4%, the method comprising a pellet-producing step S1 for producing pellets from nickel oxide ore, and a reducing step S2 for reduction-heating of the obtained pellets in a smelting furnace. In the pellet-producing step S1, the pellets are produced by mixing nickel oxide ore with a specified amount of a carbonaceous reducing agent as starting materials. In the reducing step S2, the produced pellets are charged in a smelting furnace in which a carbonaceous reducing agent (furnace bottom carbonaceous reducing agent) has been spread over the entire furnace bottom and reduction-heating is performed.

公开(公告)号：US09617610B2

公开(公告)日：2017-04-11

申请号：US14336435

申请日：2014-07-21

Applicant: Baha Elsayed Abulnaga

Inventor： Baha Elsayed Abulnaga

IPC: C21B13/10 ,  C21B13/00 ,  F27B3/04 ,  F27B3/20 ,  F27B3/26 ,  F27B3/10

CPC classification number: C21B13/10 ,  C21B13/0006 ,  F27B3/045 ,  F27B3/10 ,  F27B3/205 ,  F27B3/263

Abstract: The invention relates to a process of melting ferrous metal using a gaseous fuel, a liquid fuel or a pulverized solid fuel in a cokeless horizontal reverberatory furnace (FIG. 1) consisting of a hearth (1), an sloped melting chamber (2) a vertical refractory grid (4), a burner (3), a recuperator or regenerator (5) to transfer heat from waste gas and products of combustion to fresh oxygen bearing gases, whereas a burner system is installed on the hearth for combustion of the fuel and oxygen bearing gas, the hearth under the burner acts as a superheater to achieve the temperature necessary for alloying and to receive the molten metal cascading from the sloped melting chamber, the sloped melting chamber being fed from one end by the rising gas products of combustion and in which the waste gases are subject to post-combustion of carbon monoxide and volatiles before passing through a recuperator or a regenerator to pre-heat the oxygen bearing gases necessary for combustion.

公开(公告)号：US20160312320A1

公开(公告)日：2016-10-27

申请号：US15104400

申请日：2014-12-18

Applicant: TATA STEEL NEDERLAND TECHNOLOGY B.V.

Inventor： Hendrikus Koenraad Albertus MEIJER

IPC: C21B5/00 ,  C21B13/00 ,  C21B13/10 ,  F27B3/22 ,  F27D3/18 ,  F27D21/00 ,  F27B3/02 ,  C21B3/02 ,  F27D3/16

CPC classification number: C21B5/006 ,  C21B3/02 ,  C21B13/0013 ,  C21B13/0026 ,  C21B13/0073 ,  C21B13/10 ,  C21C5/56 ,  F27B3/02 ,  F27B3/225 ,  F27D3/16 ,  F27D3/18 ,  F27D21/0014 ,  F27D2003/164 ,  F27D2003/185 ,  F27D2019/0003 ,  F27D2019/0034 ,  Y02P10/136

Abstract: A method of operating a smelt cyclone, wherein the supply of feed material and/or the supply of oxygen containing gas through an array of tuyeres into the smelt cyclone is controlled in order to control accretions of metalliferous feed material at the inside of the smelt cyclone.

Abstract translation: 一种操作熔融旋风分离器的方法，其中控制供料和/或通过一系列风口将含氧气体供应到熔炼旋风分离器中，以便控制在熔融旋风分离器内部的含金属进料的增加 。

公开(公告)号：US09175907B2

公开(公告)日：2015-11-03

申请号：US13148576

申请日：2010-02-09

Applicant: Jacques Pilote ,  Rodney James Dry

Inventor： Jacques Pilote ,  Rodney James Dry

IPC: C21B13/00 ,  F27B3/10 ,  F27B3/18 ,  F27B3/22 ,  F27D3/16 ,  F27D3/18

CPC classification number: C22B5/10 ,  C21B13/0013 ,  C21B13/0026 ,  C21B13/10 ,  C22B5/18 ,  F27B3/10 ,  F27B3/18 ,  F27B3/22 ,  F27D3/0025 ,  F27D3/16 ,  F27D3/18 ,  F27D13/00 ,  F27M2001/04 ,  F27M2003/02 ,  Y02P10/136

Abstract: A process and apparatus for direct smelting metalliferous material is disclosed. The invention concentrates injection of solid feed materials comprising metalliferous material and carbonaceous material into a direct smelting vessel during the course of the process into a relatively small region within a metal layer in a molten bath in the vessel in order to generate a substantial upward movement of molten material and gas from the metal layer into a region in the vessel that is above the molten bath. In particular, the invention injects the solid feed materials with sufficient momentum and/or velocity via an opposed pair of lances that are oriented within the vessel and arranged to form overlapping plumes of injected material in the molten bath.

Abstract translation: 公开了用于直接熔炼含金属材料的方法和装置。 本发明将包含含金属材料和含碳材料的固体进料材料在工艺过程中集中到直接熔炼容器中，进入容器中熔融浴中的金属层内的相对较小的区域，以便产生大量向上移动 熔融材料和气体从金属层进入容器中位于熔池上方的区域。 特别地，本发明通过相对的一对喷枪将具有足够动量和/或速度的固体进料材料注入到容器内，并且布置成在熔融浴中形成重叠的喷射材料的羽流。

公开(公告)号：US08961650B2

公开(公告)日：2015-02-24

申请号：US13693581

申请日：2012-12-04

Applicant: Mitsubishi-Hitachi Metals Machinery, Inc.

Inventor： Susumu Kamikawa ,  Hiroshi Nakajima ,  Keiichi Sato ,  Khanhson Pham

IPC: C22B1/02 ,  C21B11/10 ,  F27D17/00 ,  C21B13/00 ,  C21B13/10 ,  C21B13/14 ,  F27B9/30 ,  C21C5/52 ,  F27B9/24

CPC classification number: C22B1/02 ,  C21B11/10 ,  C21B13/0046 ,  C21B13/10 ,  C21B13/143 ,  C21C5/5229 ,  F27B9/243 ,  F27B9/30 ,  F27B2009/3027 ,  F27D17/002 ,  Y02P10/216

Abstract: A reduction furnace includes a pellet material supplying device forming on a grate an ignition carbon material layer having a predetermined height; an ignition device; and an exhaust gas circulation device supplying an oxygen-containing gas comprising circulated exhaust gas mixed with air, to a packed bed of the pellets heated by a combustion heat of the ignition carbon material layer. A partially-reduced iron is produced by thermally reducing the pellets through a combustion region for the ignition carbon material layer and a heating region, the combustion region formed upstream in a travelling direction of the grate by supplying a gas having a high oxygen concentration, the heating region formed downstream of the combustion region by supplying a gas having a low oxygen concentration.

Abstract translation: 还原炉包括在炉排上形成具有预定高度的点火碳材料层的颗粒材料供给装置; 点火装置; 以及废气循环装置，其将包含与空气混合的循环废气的含氧气体供给到通过点燃碳材料层的燃烧热加热的颗粒的填充床。 通过将点火碳材料层和加热区域的燃烧区域热还原，通过供给具有高氧浓度的气体在炉排的行进方向上游形成燃烧区域来产生部分还原的铁， 通过提供具有低氧浓度的气体形成在燃烧区域下游的加热区域。

公开(公告)号：US08906131B2

公开(公告)日：2014-12-09

申请号：US13450535

申请日：2012-04-19

Applicant: John J. Simmons

Inventor： John J. Simmons

IPC: C21B13/10 ,  C21B13/00

CPC classification number: C21B13/0046 ,  C21B13/006 ,  C21B13/008 ,  C21B13/10 ,  C21B2100/22 ,  C21B2100/62 ,  Y02P10/136

Abstract: Metallic iron is produced from a composition formed from a mixture of iron ore particles and particles of a reductant made of a biomass material, a coal or coke in a particulate form together with a flux and is processed in a loose, un-agglomerated non-pelletized, non-briquetted form in a reducing furnace to produce metallic iron directly from the ore. An excess of biomass or coal or coke reductant can be used to provide CO and H that can be recovered as a synthetic gas and converted to electrical or other energy. Metallic iron nuggets or slabs can be produced from manganiferous ores or concentrates. Manganese can be caused to enter the nugget or slab or the slag by adjusting the furnace temperature. Titaniferous ores or concentrates can be used to produce metallic iron slabs or nuggets and a titanium-rich slag.

Abstract translation: 金属铁由由铁矿石颗粒和由生物质材料制成的还原剂的颗粒，颗粒形式的煤或焦炭与助熔剂的混合物形成的组合物制成，并且在松散的未结块的非 - 在还原炉中将颗粒状，非压块形式直接从矿石中生产金属铁。 可以使用过量的生物质或煤或焦炭还原剂来提供可作为合成气体回收并转化为电或其他能量的CO和H。 金属铁块或板坯可由锰矿石或精矿生产。 通过调整炉温可以使锰进入熔核或板坯或炉渣。 含铁矿石或浓缩物可用于生产金属铁板或块和富含钛的炉渣。

公开(公告)号：US08535602B2

公开(公告)日：2013-09-17

申请号：US13351742

申请日：2012-01-17

Applicant: Rodney L. Bleifuss ,  David J. Englund ,  Iwao Iwasaki ,  Donald R. Fosnacht ,  Mark M. Brandon ,  Bradford G. True

Inventor： Rodney L. Bleifuss ,  David J. Englund ,  Iwao Iwasaki ,  Donald R. Fosnacht ,  Mark M. Brandon ,  Bradford G. True

IPC: C22B13/10

CPC classification number: C21B13/0073 ,  C21B13/10 ,  C21C5/567 ,  C21C2100/02 ,  C22B1/212 ,  C22B1/245 ,  C22B5/10 ,  F27B9/045 ,  F27B9/26 ,  F27B9/3005 ,  F27B9/36 ,  Y02P10/136

Abstract: A hearth furnace for producing metallic iron material has a furnace housing having a drying/preheat zone, a conversion zone, a fusion zone, and optionally a cooling zone, the conversion zone is between the drying/preheat zone and the fusion zone. A moving hearth is positioned within the furnace housing. A hood or separation barrier within at least a portion of the conversion zone, fusion zone or both separates the fusion zone into an upper region and a lower region with the lower region adjacent the hearth and the upper region adjacent the lower region and spaced from the hearth. An injector introduces a gaseous reductant into the lower region adjacent the hearth. A combustion region may be formed above the hood or separation barrier.

Abstract translation: 用于生产金属铁材料的炉底炉具有炉壳，其具有干燥/预热区，转化区，熔融区和任选的冷却区，转化区位于干燥/预热区和熔融区之间。 移动的炉床位于炉壳内。 在转化区域，熔融区域或两者的至少一部分内的罩或分离屏障将熔融区域分离成上部区域和下部区域，其中下部区域邻近炉床，并且上部区域邻近下部区域并与 炉。 喷射器将气态还原剂引入靠近炉膛的下部区域。 燃烧区域可以形成在罩或隔离屏障之上。

公开(公告)号：US08475707B2

公开(公告)日：2013-07-02

申请号：US12963865

申请日：2010-12-09

Applicant: Jinlong Zhan

Inventor： Jinlong Zhan

IPC: C22B5/02 ,  F27B3/04 ,  F27B3/06 ,  F27B3/19

CPC classification number: C21B13/00 ,  C21B13/10 ,  C21B13/146 ,  F27B9/20 ,  F27B9/26 ,  F27B9/38 ,  F27B9/39 ,  F27D3/06

Abstract: An apparatus and a method of manufacturing direct reduction iron and a reduction firing apparatus. The apparatus has a reduction furnace including a left chamber, a right chamber, a material containing device, a step mechanism, a slag distributing device, a charging device, heating burners, a fume extraction path, a charging device, a material receiving tank and a slag discharging path. The method includes the following steps: distributing and charging the slag in the material containing device; carrying and sending the material containing device through a preheating station, a heating station and a reduction station sequentially. Meanwhile, heating the material to be reduced by a combustion of fuel with the heating burners; discharging the reduced material into the material receiving tank; placing the material device from which the material is discharged into the feeding side of the other chamber, then a next work circulation begins.

Abstract translation: 一种制造直接还原铁的装置和方法以及还原烧制装置。 该装置具有还原炉，其包括左室，右室，含材料装置，台阶机构，炉渣分配装置，充气装置，加热燃烧器，烟气抽出路径，充电装置，材料容纳罐和 炉渣排放路径。 该方法包括以下步骤：在材料容纳装置中分配和充填炉渣; 通过预热站，加热站和还原站依次运送和发送材料容纳装置。 同时，用加热燃烧器加热燃料燃烧而减少的材料; 将还原材料排放到材料容纳罐中; 将材料从其排出的材料装置放入另一个室的进料侧，然后开始下一个工作循环。

公开(公告)号：US08454888B2

公开(公告)日：2013-06-04

申请号：US13205311

申请日：2011-08-08

Applicant: Eric Tierney ,  George Cingle, III ,  Todd Smith

Inventor： Eric Tierney ,  George Cingle, III ,  Todd Smith

IPC: C22B7/00

CPC classification number: C21C5/4606 ,  C21B13/10 ,  C22B5/10 ,  F27B3/16 ,  F27B3/20 ,  F27B3/22 ,  F27D3/16 ,  Y02P10/136

Abstract: An apparatus for injecting particulate and/or gaseous material into a metallurgical vessel for use in a metallurgical process includes a duct to inject the material. The duct includes a duct wall of concentric annular passages for inflow of cooling water from a rear end to a forward end of the duct along a first of the annular passages and for outflow of cooling water from the forward end to the rear end of the duct wall along a second of the annular passages. The concentric annular passages are provided by concentric sleeves that consist of an inner sleeve, an outer sleeve, and an intermediate sleeve. The apparatus also includes a duct tip at a forward end of the duct joining at least the inner and outer sleeves so as to provide a water flow connection between the first and second water flow passages.

Abstract translation: 将颗粒和/或气体材料注入用于冶金工艺的冶金容器中的装置包括用于注入材料的导管。 管道包括同心环形通道的管道壁，用于沿着第一环形通道将冷却水从管道的后端流入到前端，并且用于将冷却水从管道的前端流出到后端 沿着第二环形通道的壁。 同心环形通道由同轴的套筒提供，该套筒由内套管，外套管和中间套管构成。 该装置还包括在管道的前端处的管道尖端，其至少连接内部和外部套筒，以便在第一和第二水流通道之间提供水流连接。

公开(公告)号：US08377371B2

公开(公告)日：2013-02-19

申请号：US13245653

申请日：2011-09-26

Applicant: Narayan Govindaswami

Inventor： Narayan Govindaswami

IPC: C21B13/10

CPC classification number: C21B13/10 ,  C21B11/08 ,  C21B13/0046 ,  F27B9/22 ,  F27B9/225 ,  F27B9/26 ,  F27B9/3011 ,  F27B9/38 ,  F27B9/39 ,  F27D3/0033 ,  F27D3/04

Abstract: A battery of stationary hearth furnaces, and method for using, for producing metallic iron nodules having a furnace having a stationary hearth, an inlet and an outlet; a heating chamber beneath the stationary hearth having heated fluids circulated thereto and heating reducible material on the stationary hearth; passageways circulating fluids, through ports from the furnace housing above the reducible material to the heating chamber beneath; burners and air inlets in the furnace and optionally in at least one passageway and a heating chamber for drying and heating the reducible material, driving off and burning volatile material, and forming metallic iron nodules; a loading device for loading reducible material and optionally hearth material onto the stationary hearth through the inlet; and a discharging device capable of discharging metallic iron nodules and optionally related material from the stationary hearth through the outlet.

Abstract translation: 一种固定的炉底炉，以及用于制造具有炉子的金属铁结核的方法，所述炉具有固定的炉床，入口和出口; 位于固定炉底下的加热室具有循环到其上的加热流体和在固定炉床上的可加热还原材料; 通过循环流体，通过从可还原材料上方的炉壳体到下面的加热室的端口; 燃烧器和空气入口，并且可选地在至少一个通道和加热室中，用于干燥和加热可还原材料，驱除和燃烧挥发性物质，并形成金属铁结核; 用于将可还原材料和任选的炉床材料加载到通过入口的固定炉床上的装载装置; 以及能够通过出口从固定炉床排出金属铁结核和任选的相关材料的排出装置。