ЭЛЕКТРОДУГОВАЯ ПЕЧЬ ПОСТОЯННОГО ТОКА ДЛЯ ПЛАВКИ

1. Электродуговая печь постоянного тока для плавки металла, содержащая футерованный корпус со сводом и днищем, окно для загрузки исходного материала, сливное отверстие, сводовый и, по меньшей мере, один подовый электроды, а также источник электроэнергии, к которому подсоединены электроды, и систему регулирования тока, отличающаяся тем, что на внешней поверхности корпуса печи между уровнем окна загрузки и днищем установлен соленоид, обеспечивающий при подаче тока магнитное насыщение расплавленного металла. 2. Электродуговая печь по п.1, отличающаяся тем, что соленоид снабжен магнитопроводом, один из полюсов которого расположен на уровне расплавленного металла, а другой - на уровне нижней поверхности днища. 3. Электродуговая печь по п.2, отличающаяся тем, что соленоид расположен внутри магнитопровода и снабжён системой воздушного охлаждения. РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 124 956 U1 (51) МПК F27B 3/08 (2006.01) F27D 27/00 (2010.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ (21)(22) Заявка: ПОЛЕЗНОЙ МОДЕЛИ К ПАТЕНТУ 2012124626/02, 14.06.2012 (24) Дата начала отсчета срока действия патента: 14.06.2012 (45) Опубликовано: 20.02.2013 Бюл. № 5 1 2 4 9 5 6 R U Формула полезной модели 1. Электродуговая печь постоянного тока для плавки металла, содержащая футерованный корпус со сводом и днищем, окно для загрузки исходного материала, сливное отверстие, сводовый и, по меньшей мере, один подовый электроды, а также источник электроэнергии, к которому подсоединены электроды, и систему регулирования тока, отличающаяся тем, что на внешней поверхности корпуса печи между уровнем окна загрузки и днищем установлен соленоид, обеспечивающий при подаче тока магнитное насыщение расплавленного металла. 2. Электродуговая печь по п.1, отличающаяся тем, что соленоид снабжен магнитопроводом, один из полюсов которого расположен на уровне расплавленного металла, а другой - на уровне нижней поверхности днища. 3. Электродуговая печь по п.2, отличающаяся тем, что ...

Индукционная индукторная тигельная печь с кольцевым наборным магнитопроводом

Индукционная индукторная тигельная печь с кольцевым наборным магнитопроводом предназначена для использования в металлургии и литейном производстве для выплавки различных сплавов, доведения расплава до необходимых свойств и выдержки его для порционной разливки. Печь содержит скрепленные вместе каркас с верхней и нижней плитами, футерованный тигель, охлаждаемый индуктор с электроизолированными витками и токоподводом, наружный наборный магнитопровод. Между тиглем и индуктором размещена цилиндрическая обечайка. Магнитопровод выполнен в виде кольцевого кожуха. Обечайка и магнитопровод расположены между плитами с образованием замкнутой кольцевой полости для размещения индуктора и хладагента. Значительно расширяется сфера использования индукционных плавки и тигельной печи путем снижения энергоемкости плавки, уменьшения эксплуатационных расходов и занимаемой площади, повышения защищенности индуктора и работающих и надежности работы печи. И 1 177465 ко РОССИЙСКАЯ ФЕДЕРАЦИЯ ВУ” 177465” 44 ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ИЗВЕЩЕНИЯ К ПАТЕНТУ НА ПОЛЕЗНУЮ МОДЕЛЬ ММ9К Досрочное прекращение действия патента из-за неуплаты в установленный срок пошлины за поддержание патента в силе Дата прекращения действия патента: 09.12.2018 Дата внесения записи в Государственный реестр: 16.09.2019 Дата публикации и номер бюллетеня: 16.09.2019 Бюл. №26 Стр.: 1 па ЗА ДЬ ЕП

Индукционная индукторная тигельная печь с проволочным индуктором

Индукционная индукторная тигельная печь с проволочным индуктором предназначена для использования в металлургии и литейном производстве для выплавки различных сплавов, доведения расплава до необходимых свойств и выдержки его для порционной разливки. Печь содержит скрепленные вместе каркас с верхней и нижней плитами, футерованный тигель, охлаждаемый индуктор с электроизолированными витками и токоподводом, наружный наборный магнитопровод. Между тиглем и индуктором размещена цилиндрическая обечайка. Наборный магнитопровод выполнен в виде полого цилиндра. Витки индуктора выполнены из одно- или многопроволочного проводника. Обечайка и магнитопровод расположены между плитами с образованием замкнутой кольцевой полости для размещения индуктора и хладагента. Значительно расширяется сфера использования индукционных плавки и тигельной печи путем снижения энергоемкости плавки, уменьшения эксплуатационных расходов и занимаемой площади, повышения защищенности индуктора и работающих и надежности работы печи. И 1 177475 ко РОССИЙСКАЯ ФЕДЕРАЦИЯ 7 ВУ’? 177 475 41 ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ИЗВЕЩЕНИЯ К ПАТЕНТУ НА ПОЛЕЗНУЮ МОДЕЛЬ ММ9К Досрочное прекращение действия патента из-за неуплаты в установленный срок пошлины за поддержание патента в силе Дата прекращения действия патента: 09.12.2018 Дата внесения записи в Государственный реестр: 16.09.2019 Дата публикации и номер бюллетеня: 16.09.2019 Бюл. №26 Стр.: 1 па УДЛУД ДАТЬ ЕП

УСТРОЙСТВО МАГНИТОГИДРОДИНАМИЧЕСКОГО ПЕРЕМЕШИВАНИЯ ЖИДКОГО МЕТАЛЛА В ЦИЛИНДРИЧЕСКОЙ ВАННЕ

Полезная модель относится к области металлургии, а именно к устройствам магнитогидродинамического перемешивания жидких металлов. Электромагнитная сила, действующая на расплав, создается специальным устройством с постоянными магнитами. Предлагаемое устройство позволяет повысить КПД электромагнитного перемешивателя жидкого металла за счет наличия концентраторов магнитного поля, которые уменьшают потоки рассеяния, кроме того, предлагаемое устройство позволяет организовывать вращательное движение расплава по средствам воздействия на него вращающегося магнитного поля при фиксированном расположении концентраторов относительно магнитной системы, а также позволяет организовать возмущение расплава при фиксированном расположении концентраторов относительно ванны расплава, создавая пульсирующее магнитное поле, что существенно повышает гомогенность расплава по температуре, химическому составу и структуре. Переменное магнитное поле различных форм создает в расплаве вихревой ток, при взаимодействии которого с внешним магнитным полем постоянных магнитов возникает сила Лоренца, действующая на расплав, и приводящая к его перемещению. РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 189 343 U1 (51) МПК F27D 27/00 (2010.01) F27B 14/06 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ПОЛЕЗНОЙ МОДЕЛИ К ПАТЕНТУ (52) СПК F27D 27/00 (2018.08); F27B 14/06 (2018.08) (21)(22) Заявка: 2018134418, 27.09.2018 (24) Дата начала отсчета срока действия патента: Дата регистрации: 22.05.2019 (45) Опубликовано: 22.05.2019 Бюл. № 15 Адрес для переписки: 630073, г. Новосибирск, пр. Карла Маркса, 20, ФГБОУ ВО " Новосибирский государственный технический университет" (73) Патентообладатель(и): ФЕДЕРАЛЬНОЕ ГОСУДАРСТВЕННОЕ БЮДЖЕТНОЕ ОБРАЗОВАТЕЛЬНОЕ УЧРЕЖДЕНИЕ ВЫСШЕГО ОБРАЗОВАНИЯ "НОВОСИБИРСКИЙ ГОСУДАРСТВЕННЫЙ ТЕХНИЧЕСКИЙ УНИВЕРСИТЕТ" (RU) (56) Список документов, цитированных в отчете о поиске: RU 2543022 С1, 27.02.2015. RU U 1 1 8 9 3 4 3 R U (54) УСТРОЙСТВО МАГНИТОГИДРОДИНАМИЧЕСКОГО ...

УСТРОЙСТВО МАГНИТОГИДРОДИНАМИЧЕСКОГО ПЕРЕМЕШИВАНИЯ ЖИДКОГО МЕТАЛЛА В ЦИЛИНДРИЧЕСКОЙ ВАННЕ

Полезная модель относится к области металлургии, а именно к устройствам магнитогидродинамического перемешивания жидких металлов. Электромагнитная сила, действующая на расплав, создается специальным устройством с постоянными магнитами. Предлагаемое устройство позволяет обеспечить технологически необходимую равномерность вводимых в расплав легирующих элементов за счет спиралевидной формы вращающихся постоянных магнитов. Источником электромагнитного поля, влияющего на расплав, является система вращающихся постоянных магнитов. Переменное магнитное поле создает в расплаве вихревой ток, при взаимодействии которого с внешним магнитным полем постоянных магнитов возникает сила Лоренца, действующая на расплав и приводящая к его перемещению. Спиралевидная форма постоянных магнитов позволяет достичь помимо азимутальной составляющей скорости расплава еще и движение по высоте ванны: от центра ванны по радиусу к стенке, по стенке вверх и от верхней точки зеркала расплава вниз, создавая воронку жидкого металла, которая интенсифицирует процесс перемешивания легирующих элементов по объему расплава. РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 207 347 U1 (51) МПК F27D 27/00 (2010.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ПОЛЕЗНОЙ МОДЕЛИ К ПАТЕНТУ (52) СПК F27D 27/00 (2021.08) (21)(22) Заявка: 2021121847, 23.07.2021 (24) Дата начала отсчета срока действия патента: 25.10.2021 Приоритет(ы): (22) Дата подачи заявки: 23.07.2021 (45) Опубликовано: 25.10.2021 Бюл. № 30 2 0 7 3 4 7 R U (56) Список документов, цитированных в отчете о поиске: RU 2543022 C1, 27.02.2015. RU 2157492 C2, 10.10.2000. RU 2465528 C1, 27.10.2012. RU 2224966 C1, 27.02.2004. GB 2389645 A, 17.12.2003. US 5563904 A, 08.10.1998. (54) УСТРОЙСТВО МАГНИТОГИДРОДИНАМИЧЕСКОГО ПЕРЕМЕШИВАНИЯ ЖИДКОГО МЕТАЛЛА В ЦИЛИНДРИЧЕСКОЙ ВАННЕ (57) Реферат: Полезная модель относится к области расплаве вихревой ток, при взаимодействии металлургии, а именно к устройствам которого с внешним магнитным полем ...

Metal melting apparatus and method for melting metal

A metal melting apparatus has a heating furnace, a melting furnace mounted on the heating furnace, a high-cycle regenerative system (FIRS), a raw material feeding device and a melted material feeding device mounted on the melting furnace. The HRS heats and recycles high temperature air in the heating furnace and guides the high temperature air to the preheating screw to preheat metal materials in the preheating screw. Thus, a time for melting the metal materials from solid to liquid is greatly shortened. Furthermore, a series of processes for preheating the metal materials in the raw material feeding device, melting the metal materials in the melting furnace and injecting the molten materials to the molds is fluent, time-saving and safe, and can progress continuously.

Transferring molten metal using non-gravity assist launder

A system and method for transferring molten metal from a vessel and into a launder is disclosed. The system includes at least a vessel for containing molten metal, an overflow (or dividing) wall, and a device or structure, such as a molten metal pump, for generating a stream of molten metal. The dividing wall divides the vessel into a first chamber and a second chamber, wherein part of the second chamber has a height H 2 . The device for generating a stream of molten metal, which is preferably a molten metal pump, is preferably positioned in the first chamber. When the device operates, it generates a stream of molten metal from the first chamber and into the second chamber. When the level of molten metal in the second chamber exceeds H 2 , molten metal flows out of the vessel and into the launder. The launder has a horizontal angle of between 0° and −10° to help prevent dross from being pulled by gravity into downstream vessels.

Molten metal transfer vessel and method of construction

The invention relates to systems for transferring molten metal from one structure to another. Aspects of the invention include a transfer chamber constructed inside of or next to a vessel used to retain molten metal. The transfer chamber is in fluid communication with the vessel so molten metal from the vessel can enter the transfer chamber. A powered device, which may be inside of the transfer chamber, moves molten metal upward and out of the transfer chamber and preferably into a structure outside of the vessel, such as another vessel or a launder.

APPARATUS AND METHOD FOR SUPPLYING HEAT TO A METAL MELT

The invention relates to a device and a method for supplying heat to a metal melt, where in a closed container () with openings () for supply and discharge of the melt and where a sub pressure may be formed, a rotor () in the form of a hallow rotation body and a hollow driving shaft () containing the electrode () for supply of electric current for formation of an electric arc () towards the surface () of the metal of the melt. The lower end of the electrode () is positioned in a hollow head with an opening () downwards towards the bottom of the container (). The hollow head is configured to provide access to the surface () of the metal melt, so that the electric arc () is formed inside the head and where the hollow driving shaft () possibly is configured for supply of gas to the metal melt. The lower end surface of the rotor () is configured so that a pumping effect in the heated melt beneath the lower end of the rotor () is formed, moving the heated melt sideways away from the rotor () along the lower, external end surface of the rotor (). 24016. Apparatus according to claim 1 , where the axes of said borings () form an angle with a plane being perpendicular to the longitudinal axis of the rotor ().316164116. Apparatus according to claim 1 , where the external vertical surface of the rotor () at least in the region of the lower end of the rotor () is provided with slots () claim 1 , grooves or profiles in order to improve the pumping effect beneath the lower end surface of the rotor ().44116. Apparatus according to claim 3 , wherein the slots () claim 3 , grooves or profiles extend in the longitudinal direction of the rotor () and may be straight or helical.541. Apparatus according to claim 4 , where the slots () claim 4 , the grooves or the profiles extend in a direction around the rotor on its external surface.620. Apparatus according to claim 5 , wherein the hollow shaft () is configured to supply gas of the metal melt.78-. (canceled) The present invention ...

Rotary degasser and rotor therefor

A device for dispersing gas into molten metal includes an impeller, a drive shaft having a gas-transfer passage therein, and a first end and a second end, and a drive source. The second end of the drive shaft is connected to the impeller and the first end is connected to the drive source. The impeller includes a first portion and a second portion with a plurality of cavities. The first portion covers the second portion to help prevent gas from escaping to the surface without entering the cavities and being mixed with molten metal as the impeller rotates. When gas is transferred through the gas-transfer passage, it exits through the gas-release opening(s) in the bottom of the impeller. At least some of the gas enters the cavities where it is mixed with the molten metal being displaced by the impeller. Also disclosed are impellers that can be used to practice the invention.

DEVICE AND METHOD FOR REMOVING IMPURITIES IN ALUMINUM MELT

A device and method for removing impurities in aluminum melt. The device comprises an upper furnace body, a lower furnace body, an intermediate partition plate, a crucible, heating elements and a charging opening. The intermediate partition plate is mounted between the upper furnace body and the lower furnace body. The upper furnace body, a mixing chamber and the heating element are above the intermediate partition plate. The crucible is amounted in the lower furnace body. The heating element is provided around the lower furnace body. The lower furnace body is provided with the charging opening and a pipeline. The upper furnace body is provided with an inlet valve and an exhaust valve. The mixing chamber and the crucible are connected by a jet pipe passing through the intermediate partition plate. A ceramic seal pad is used for sealing between the mixing chamber and the jet pipe. During use, the aluminum melt and a liquid flux are placed in the crucible, the liquid flux covers the aluminum melt, the pressure of the lower furnace body is increased, the aluminum melt first stably enters the mixing chamber along the jet pipe, then the liquid flux enters the mixing chamber in a manner of confined jet flow and is uniformly mixed with the aluminum melt, last the pressure of the lower furnace body is unloaded, so that the mixed liquid falls back into the crucible, and this operation may be repeated for multiple times. For the device and the method, the impurity removal is quick, the efficiency is high and the process is closed, so there is no environmental pollution, and the aluminum melt after the impurity removal may be directly cast. 1. A device for removing impurities in aluminum melt comprising:an upper furnace body,a lower furnace body,an intermediate partition plate,a crucible,heating elements, anda charging opening,wherein the intermediate partition plate is mounted between the upper furnace body and the lower furnace body;the upper furnace body, a mixing chamber ...

Liquid lithium supply and regulation

Methods and systems for the production and delivery of lithium metal of high purity are provided. More particularly, methods and systems for lithium metal purification, delivery and deposition are provided. In at least one aspect, a liquid lithium delivery system is provided. The liquid lithium delivery system comprises a liquid lithium delivery module. The liquid lithium delivery system comprises a lithium storage region operable to store the liquid lithium, a pumping region operable to move liquid lithium through the lithium delivery, and a flow control region. The pumping region comprises an electromagnetic pump operable to move the liquid lithium using electromagnetism. The flow control region operable to control the flow of liquid lithium, comprising one or more valves operable to control the flow of the liquid lithium, wherein the pumping region is positioned downstream from the lithium storage region and upstream from the flow control region.

PERMANENT MAGNET-TYPE MOLTEN METAL STIRRING DEVICE AND MELTING FURNACE AND CONTINUOUS CASTING APPARATUS INCLUDING THE SAME

A permanent magnet-type molten metal stirring device includes: a support body that can suppress heat transfer from molten metal; a magnetic field unit provided above the support body and including a permanent magnet allowing magnetic force lines to vertically extend in the molten metal; and a drive unit provided below the support body and driving the molten metal with an electromagnetic force generated by the magnetic force lines and current allowed to flow through the molten metal by the drive unit. The drive unit includes: a cylindrical drive main body mounted on a lower portion of the support body and including a passage formed therein and laterally extending in a longitudinal direction, and a pair of electrodes provided at positions opposed to each other along a width direction via the passage, the pair of electrodes allowing current intersecting the magnetic lines of force in the molten metal. 1. A permanent magnet-type molten metal stirring device comprising:a support body that is capable of suppressing transfer of heat from molten metal;a magnetic field unit that is provided above the support body and includes a permanent magnet allowing magnetic lines of force to vertically extend in the molten metal; anda drive unit that is provided below the support body and drives the molten metal with an electromagnetic force generated by the magnetic lines of force generated from the permanent magnet and current allowed to flow through the molten metal by the drive unit, a cylindrical drive unit main body that is mounted on a lower portion of the support body and includes a passage formed therein and laterally extending in a longitudinal direction, and', 'a pair of electrodes that are provided at positions where the pair of electrodes being opposed each other along a width direction via the passage, the pair of electrodes being exposed to the passage, and the pair of electrodes allowing current in the molten metal, the current intersecting the magnetic lines of force., ...

DEVICE AND METHOD FOR MANUFACTURING AN ACTIVE ALLOY

An device for manufacturing an active alloy includes: a melting chamber including: a working pipe surrounded by an induction coil and forming a working area; a chamber base disposed below the working pipe and communicated with the working pipe, and including: a gas inlet hole; a vacuum pump connection port; and a vacuum sensor, for measuring a vacuum degree in the working pipe; a chamber door communicated with the chamber base; a first bracket passing through the chamber base, and moving towards a direction away from or near the working area; a second bracket extending into the working pipe, and moving towards a direction away from or near the working area; and a material recycling seat which can extend into the chamber base in a push and pull way. 1. A device for manufacturing an active alloy , comprising: a working pipe surrounded by an induction coil and forming with a working area;', a gas inlet hole;', 'a vacuum pump connection port; and', 'a vacuum sensor, for measuring a vacuum degree in the working pipe;, 'a chamber base disposed below the working pipe and communicated with the working pipe, and comprising, 'a chamber door communicated with the chamber base;', 'a first bracket passing through the chamber base, and moving towards a direction away from or near the working area;', 'a second bracket extending into the working pipe, and moving towards a direction away from or near the working area; and', 'a material recycling seat extending into the chamber base in a push and pull way;, 'a melting chamber comprisinga vacuum pump unit physically connected to the vacuum pump connection port, for making the melting chamber form a vacuum confined space; andan inert gas supply unit communicated with the melting chamber via the gas inlet hole.2. The device for manufacturing an active alloy according to claim 1 , wherein:the chamber door is used for placing a first active metal into the chamber base;the first bracket is used for lifting up the position of the first ...

METHOD FOR MANUFACTURING A NICKEL-TITANIUM ALLOY USING A HIGH VACUUM CRUCIBLELESS LEVITATION MELTING PROCESS

A method for manufacturing a nickel-titanium alloy includes steps of: placing a titanium material on a first bracket, and placing a nickel material on a second bracket; vacuumizing the vacuum confined space of the melting chamber to below a pressure of 10Torr, and lifting up the titanium material placed on the first bracket to a working area of an induction coil; introducing inert gases; starting the induction coil, to make the titanium material in a levitation state and electromagnetically stirred and heated; dropping the first bracket; measuring whether the temperature of the working area of the induction coil reaches a predetermined temperature range; when the first active metal is in the half molten state, dropping the nickel material placed on the second bracket to be added to the titanium material, and obtaining a homogenizing nickel-titanium alloy by means of electromagnetic stirring and heating; and recycling the homogenizing nickel-titanium alloy. 1. A method for manufacturing a nickel-titanium alloy using a high vacuum crucibleless levitation melting process , the method comprising:step A: placing a titanium material on a first bracket, and placing a nickel material on a second bracket, so as to make the titanium nickel and materials located in a vacuum confined space of a melting chamber;{'sup': '−5', 'step B: vacuumizing the vacuum confined space of the melting chamber to below a pressure of 10Torr, and lifting up the titanium material placed on the first bracket to a working area of an induction coil;'}step C: introducing inert gases, to prevent the titanium material from producing an oxidization reaction in a subsequent high-temperature process;step D: starting the induction coil, to make the titanium material in a levitation state and electromagnetically stirred and heated;step E: dropping the first bracket, to make the titanium material stably levitate and electromagnetically stirred and heated;step F: measuring whether the temperature of the working ...

MULTI-CHAMBER MELTING FURNACE AND METHOD FOR MELTING NON-FERROUS SCRAP METAL

A multi-chamber melting furnace for melting scrap of non-ferrous metals, in particular aluminum scrap, including a first shaft furnace with a shaft for charge material, in which impurities of the charge material can be removed, and at least one furnace chamber which is connected to the shaft of the first shaft furnace and has a first heat supply device, wherein at least one second shaft furnace with a shaft for charge material, in which shaft impurities of the charge material can be removed, the furnace chamber being connected to the shaft of the second shaft furnace and being arranged between the shafts in such a manner that the furnace chamber forms a main melting chamber in which the molten bath is located during operation. 1. A multi-chamber melting furnace for melting scrap of non-ferrous metals , in particular aluminum scrap , comprising a first shaft furnace with a shaft for charge material , in which impurities of the charge material can be removed , and at least one furnace chamber which is connected to the shaft of the first shaft furnace and has a first heat supply device , wherein at least one second shaft furnace with a shaft for charge material , in which impurities of the charge material can be removed , the furnace chamber being connected to the shaft of the second shaft furnace and being arranged between the shafts in such a manner that the furnace chamber forms a main melting chamber in which the molten bath is located during operation.2. The multi-chamber melting furnace according to claim 1 , wherein the furnace chamber and the lower end of the shafts are directly connected to each other.3. The multi-chamber melting furnace according to claim 1 , wherein the furnace chamber and the shafts are arranged laterally next to each other.4. The multi-chamber melting furnace according to claim 1 , wherein the furnace chamber and the shafts each have longitudinal sides adjoining each other claim 1 , the furnace chamber and the shafts being connected to ...

CONTINUOUS CASTING DEVICE FOR SLAB COMPRISING TITANIUM OR TITANIUM ALLOY

In the present invention the torch movement period is 20-40 seconds, with the torch movement period being the time required to move plasma torches (which heat the surface of molten metal in the casting mold) one time. The average heat input amount at multiple sites, which are obtained by dividing the initial solidification portion (which is where the molten metal makes contact with the casting mold and first solidifies) into multiple sites in the circumferential direction of the casting mold, is 1.0-2.0 MW/m. The molten metal advection time, which is the time required for electromagnetically stirred molten metal to travel the length of the torch heating region of the surface of the molten metal in the lengthwise direction of the casting mold, is 3.5 seconds or less. 1a plasma torch for heating a melt surface of a molten metal in a bottomless mold while moving over the melt surface of the molten metal in a predetermined moving pattern, the plasma torch being disposed above the bottomless mold;an electromagnetic stirring device for stirring at least the melt surface of the molten metal by electromagnetic stirring, the electromagnetic stirring device being disposed on a side of the bottomless mold; anda controller, wherein the controller controls the plasma torch and the electromagnetic stirring device;the method comprising:injecting molten metal prepared by melting titanium or a titanium alloy into the bottomless mold having a rectangular cross section;withdrawing the molten metal downward while being solidified; and a torch moving cycle T of 20 sec or more and 40 sec or less, the torch moving cycle T being a time required for the plasma torch to complete a single round of movement in the predetermined moving pattern and calculated by T=4W/(A·Vt), where 2W represents a length of a long side of the slab in a horizontal cross section, A represents the number of the plasma torch, and Vt represents an average moving speed of the plasma torch while moving in the ...

SYSTEM AND METHOD FOR MELTING LIGHT GAUGE METAL STOCK

An exemplary furnace system for melting stock metal includes a main hearth and a side well subsystem, which includes a melting well disposed downstream of the main hearth for receiving flow from the main hearth, an input flow inducer disposed upstream of the melting well and downstream of the main hearth, and an output flow inducer disposed downstream of the melting well and upstream of the main hearth. The input flow inducer drives molten metal into the melting well, thereby forming a differential metal head in the melting well. The output flow inducer evacuates molten metal from an output conduit, thereby reducing counter-pressure at an output port of the melting well communicating with the output conduit. This allows atmospheric pressure to add to the differential metal head in the melting well, resulting in an increase in productivity of the side well subsystem and of the furnace system as a whole. 1. A method of melting and recovering metal with a furnace system , comprising the steps of:supplying a molten metal bath;forcibly directing molten metal from the molten metal bath into a melting well at an input port of the melting well under motive force applied to the molten metal by an input flow inducer;adding pieces of solid metal to the melting well, the pieces at least partially melting in the molten metal in the melting well, molten metal flowing out of the melting well via an output flow conduit, the output flow conduit having a first end opening to and fluidly coupled to the melting well at the output port of the melting well and the output flow conduit having a second end terminating at a discharge opening of the output flow conduit through which molten metal is discharged from the output flow conduit into the molten metal bath, the discharge opening of the output flow conduit upstream of a point in the furnace system from which molten metal is tapped or recovered, and the output flow conduit establishing an enclosed passage between the output port of the ...

THERMOPLASTIC KETTLE AUXILIARY HEAT EXCHANGER SYSTEM

An auxiliary heating means for improving the melting efficiency of melter kettles used to melt thermoplastic pavement marking materials. The auxiliary heating means includes a tube assembly through which thermoplastic material received from the bottom of the melter kettle is transferred to the top of the melter kettle. The tube assembly comprises an odd number of tubes having augers therein. The tube assembly is coupled to a side portion of the melter kettle and located within a heat chamber through which hot combustion gases from a combustion chamber at the bottom of the melter kettle flow and transfer heat into the tube assembly. The heat chamber comprises an extended portion of a heat chamber that surrounds the melter kettle. 1. In a melter kettle for melting thermoplastic pavement marking material wherein the melter kettle is provided with a combustion chamber the improvement comprising a tube assembly coupled to a side portion of the melter kettle and located within a heat chamber that surrounds the melter kettle through which heat chamber hot combustion gases from the combustion chamber can flow upward around the tube assembly , the tube assembly including an odd number of vertical tubes that are connected at the tops and bottom in a serpentine manner , the tube assembly is coupled at one end to a lower portion of the melter kettle and coupled at another end to the top of the melter kettle for receiving molten thermoplastic from the lower portion of the melter kettle and discharging molten thermoplastic material to the top of the melter kettle.2. The melter kettle of claim 1 , wherein the heat chamber includes an extended portion that surrounds the tube assembly.3. The melter kettle of claim 1 , further including an insulation chamber that surrounds the tube assembly.4. The melter kettle of claim 1 , wherein each tube of the tube assembly contains an auger for transferring molten thermoplastic material therethrough.5. The melter kettle of claim 4 , wherein a ...

METHOD OF PROCESSING MOLTEN METALS AND ALLOYS

A technological method of treatment of two or more materials forming a melt is disclosed. The melt may be subjected to turbulence under simultaneous combined action of resonance and hydraulic impact. Turbulence occurs when parameters of compelled vibration equalize with natural oscillations of the melt which is a function of geometric parameters of the crucible, the rheological, physical and mechanical characteristic of the two or more materials. An application of a low frequency mechanical vibration with an amplitude between 0.5-2.5 mm, frequency between 30-300 Hz, and acceleration between 15-50 G (Gravitational acceleration) may be performed on a hermetically sealed cylindrical crucible, vertically installed on a vibration unit. The heat for melting may be generated by a furnace (e.g., induction heater) installed around vibrating crucible. Various combinations of materials, batch and continuous processes are possible. 1. A molten metal processing machine for mixing two or more materials , the machine comprising:a crucible defining an interior circular surface and opposed flat inner surfaces which defines an interior space for holding the two or more materials to be mixed, the opposed flat inner surfaces being parallel to each other, the length of the crucible defining a longitudinal axis which is perpendicular to the opposed flat inner surfaces;a vibration unit attached to the crucible and operative to vibrate the crucible until resonance is reached with the two or more materials so that the two or more materials held in the interior space of the crucible experiences a turbulence phenomenon, the vibration unit defining a single vibration direction which is parallel to the longitudinal axis of the crucible;a heater attached or adjacent to the crucible for maintaining the two or more materials held in the interior space in the molten state while the vibration unit vibrates the crucible.2. The machine of wherein the vibration direction is vertical.3. The machine of ...

ROTARY DEGASSERS AND COMPONENTS THEREFOR

Disclosed are degassers, couplings, impeller shafts and impellers for use in molten metal. One such coupling transfers gas into an impeller shaft, the coupling having a smooth, tapered internal surface to align with a corresponding surface on the impeller shaft and help prevent gas leakage and to assist in preventing damage to the impeller shaft. Improved impellers for shearing and mixing gas are also disclosed, as is a degasser including one or more of these components. 1. A shaft for use in a rotary degasser , the shaft comprising:a first end, a second end, an outer sidewall, and an inner passage for transferring gas, wherein the first end is tapered, and at least one groove is formed adjacent the tapered first end, wherein the tapered first end mates with an inner tapered portion in a coupling, and one or more retainers that are threadingly received in the coupling are each threadingly received in an opening of the coupling positioned such that each of the one or more retainers is positioned to be received in and to apply pressure to one or more of the grooves, in order to apply driving force from the coupling to the shaft.2. The shaft of that has a plurality of grooves.3. The shaft of that is comprised of graphite.4. The shaft of wherein the grooves are not vertically aligned.5. The shaft of wherein the at least one groove is vertical.6. The shaft of wherein the at least one groove is circular.7. The shaft of that is coupled with a metal coupling having a first claim 1 , tapered end that receives the tapered first end of the shaft and a second end that receives the adjacent portion of the shaft containing the at least one groove claim 1 , the second end including one or more openings through which retainers may be received to contact at least one of the one or more grooves to apply driving force to the shaft.8. The shaft of wherein there is a plurality of grooves and a plurality of openings with each opening corresponding to one groove.9. The shaft of wherein ...

Ultrasonic Device with Integrated Gas Delivery System

Methods for degassing and for removing impurities from molten metals are disclosed. These methods can include operating an ultrasonic device in a molten metal bath, and adding a purging gas into the molten metal bath through the tip of the ultrasonic device. 118-. (canceled)20. The ultrasonic device of claim 19 , wherein the probe is a unitary part.21. The ultrasonic device of claim 20 , wherein the probe comprises a Sialon claim 20 , a Silicon carbide claim 20 , a Boron carbide claim 20 , a Boron nitride claim 20 , a Silicon nitride claim 20 , an Aluminum nitride claim 20 , an Aluminum oxide claim 20 , a Zirconia claim 20 , or a combination thereof.22. The ultrasonic device of claim 20 , wherein the probe comprises a Sialon.23. The ultrasonic device of claim 19 , wherein the probe is secured to the ultrasonic transducer with an attachment nut.24. The ultrasonic device of claim 19 , wherein the probe has a radius of curvature of at least about ½-inch on an attachment side of the probe.25. The ultrasonic device of claim 19 , wherein:the probe comprises a Sialon;the probe is generally cylindrical; andthe ultrasonic device further comprises a booster between the ultrasonic transducer and the probe.26. The ultrasonic device of claim 25 , wherein the length to diameter ratio is in a range from about 7:1 to about 22:1.27. The ultrasonic device of claim 25 , wherein a ratio of the cross-sectional area of the tip of the probe to the cross-sectional area of the gas outlet is in a range from about 60:1 to about 750:1.28. A method for reducing an amount of a dissolved gas and/or an impurity in a molten metal bath claim 25 , the method comprising:{'claim-ref': {'@idref': 'CLM-00019', 'claim 19'}, '(a) operating the ultrasonic device of in the molten metal bath; and'}(b) introducing a purging gas through the gas delivery system and into the molten metal bath at a rate in a range from about 0.1 to about 150 L/min.29. The method of claim 28 , wherein:the dissolved gas comprises ...

Support and compression assemblies for curvilinear molten metal transfer device

A curvilinear metal transfer device with support and compression assemblies that help maintain a constant force on the transfer device's metal outer casing and refractory as the outer casing and refractory expand and contract due to temperature fluctuations. In one embodiment, the support assemblies are configured to apply force to the refractory to keep the refractory in tension with the outer casing to suspend the refractory relative the outer casing. Also disclosed are clamp plates that help hold the refractory in place, and nested lids that cover the curvilinear metal transfer device.

Mixing cold hearth metallurgical system and process for producing metals and metal alloys

A metallurgical system for producing metals and metal alloys includes a fluid cooled mixing cold hearth having a melting cavity configured to hold a raw material for melting into a molten metal, and a mechanical drive configured to mount and move the mixing cold hearth for mixing the raw material. The system also includes a heat source configured to heat the raw material in the melting cavity, and a heat removal system configured to provide adjustable insulation for the molten metal. The mixing cold hearth can be configured as a removal element of an assembly of interchangeable mixing cold hearths, with each mixing cold hearth of the assembly configured for melting a specific category of raw materials. A process includes the steps of providing the mixing cold hearth, feeding the raw material into the melting cavity, heating the raw material, and moving the mixing cold hearth during the heating step.

DROSS MANAGEMENT SYSTEM AND METHOD

A dross processing assembly includes a stirring station at which dross in a first dross recovery vessel is stirred and a pressing station at which previously stirred dross in a second dross recovery vessel is pressed simultaneously with the stirring of the dross in the first dross recovery vessel. The stirring station and the pressing station may be commonly housed in an enclosure. A conveyor system may advance dross recovery vessels through the dross processing assembly for continuous dross processing. 1. A dross processing assembly , comprising:a stirring station at which dross in a first dross pan is stirred; anda pressing station at which dross in a second dross pan that was previously stirred by the stirring station is pressed simultaneously with the stirring of the dross in the first dross pan.2. The dross processing assembly of claim 1 , further comprising an enclosure in which the stirring station and the pressing station are commonly housed.3. The dross pressing assembly of claim 2 , wherein fumes and dust from the stirring station and the pressing station are exhausted from the enclosure together.4. The dross processing assembly of claim 1 , further comprising a conveyor system configured claim 1 , following a stirring cycle of the dross in the first dross pan and a pressing cycle of the dross in the second dross pan claim 1 , to advance the second dross pan to a retrieval area claim 1 , advance the first dross pan from the stirring station to the pressing station claim 1 , and advance a third dross pan from a staging area to the stirring station.5. The dross processing assembly of claim 4 , further comprising a first door between the staging area and the stirring station and a second door between the pressing station and the retrieval area claim 4 , wherein the doors are operated in coordination with the conveyor system.6. The dross processing assembly of claim 1 , further comprising a conveyor system configured to move dross pans from the stirring ...

Ultrasonic Probes with Gas Outlets for Degassing of Molten Metals

Ultrasonic probes containing a plurality of gas delivery channels are disclosed, as well as ultrasonic probes containing recessed areas near the tip of the probe. Ultrasonic devices containing these probes, and methods for molten metal degassing using these ultrasonic devices, also are disclosed.

ROTARY DEGASSERS AND COMPONENTS THEREFOR

Disclosed are degassers, couplings, impeller shafts and impellers for use in molten metal. One such coupling transfers gas into an impeller shaft, the coupling having a smooth, tapered internal surface to align with a corresponding surface on the impeller shaft and help prevent gas leakage and to assist in preventing damage to the impeller shaft. Improved impellers for shearing and mixing gas are also disclosed, as is a degasser including one or more of these components. 1. A shaft that cannot be threadingly connected to a corresponding coupling for use in a rotary degasser , the shaft comprising:a first end, a second end, an outer sidewall, a center portion between the first end and the second end, and an inner passage for transferring gas, wherein the first end is tapered and not threaded, and one or more grooves that are not threads formed adjacent the tapered first end between the center portion and the tapered first end; wherein the shaft is configured to be received in the corresponding coupling so that the tapered first end mates with an inner tapered portion in the coupling, and one or more retainers are received in the coupling such that each is positioned to be pressed against one of the one or more grooves, in order to apply driving force from the coupling to the shaft.2. The shaft of that has a plurality of grooves.3. The shaft of wherein the grooves are not vertically aligned.4. The shaft of wherein the at least one groove is vertical.5. The shaft of wherein the at least one groove is circular.6. The shaft of wherein at least two of the plurality of grooves are each configured to align with an opening on the coupling.7. The shaft of wherein the second end of the shaft is threaded.8. The shaft of wherein the second end of the shaft is configured to threadingly connect to a rotor.9. The shaft of wherein the taper is at an angle between 20° and 45°.10. The shaft of wherein the one or more grooves are not vertically aligned.11. The shaft of wherein the one ...

CONTINUOUS CASTING DEVICE FOR SLAB COMPRISING TITANIUM OR TITANIUM ALLOY

In the present invention the torch movement period is 20-40 seconds, with the torch movement period being the time required to move plasma torches (which heat the surface of molten metal in the casting mold) one time. The average heat input amount at multiple sites, which are obtained by dividing the initial solidification portion (which is where the molten metal makes contact with the casting mold and first solidifies) into multiple sites in the circumferential direction of the casting mold, is 1.0-2.0 MW/m. The molten metal advection time, which is the time required for electromagnetically stirred molten metal to travel the length of the torch heating region of the surface of the molten metal in the lengthwise direction of the casting mold, is 3.5 seconds or less. 1a plasma torch for heating a melt surface of the molten metal in the mold while moving over the melt surface of the molten metal in a predetermined moving pattern, the plasma torch being disposed above the mold; andan electromagnetic stirring device for stirring at least the melt surface of the molten metal by electromagnetic stirring, the electromagnetic stirring device being disposed on a side of the mold, the device having:a torch moving cycle T of 20 sec or more and 40 sec or less, the torch moving cycle T being a time required for the plasma torch to complete a single round of movement in the predetermined moving pattern and calculated by T=4W/(A·Vt), where 2W represents a length of a long side of the slab in a horizontal cross section, A represents the number of the plasma torch, and Vt represents an average moving speed of the plasma torch while moving in the predetermined moving pattern;{'sup': 2', '2, 'an average heat input quantity of 1.0 MW/mor more and 2.0 MW/mor less, the average heat input quantity being obtained by dividing an initial solidification portion, where the molten metal is initially solidified upon contacting with the mold, into a plurality of portions in a peripheral direction ...

Method and device for driving conductive metal

A method of driving conductive molten metal and a melting furnace, the method including making direct current flow vertically between a first electrode, and applying a magnetic field radially toward the center of a melting chamber from the outside of the melting furnace or toward the outside of the melting furnace from the center of the melting chamber to apply torque. The method further includes rotating the molten metal by the torque to discharge the molten metal to a holding furnace, which is provided on the melting chamber, from an outlet opening of a partition plate provided between the melting chamber and the holding furnace and to suck the molten metal, which is present in the holding furnace, from an inlet opening of the partition plate.

Method And Arrangement For Vortex Reduction In A Metal Making Process

A method for reducing vortex formation in molten metal when bottom tapping the molten metal from a metallurgical vessel in a metal making process. The method includes the steps of tapping the molten metal via a tapping hole in the metallurgical vessel, and providing a flow of the molten metal in the metallurgical vessel while tapping via a time-varying electromagnetic field applied to the metallurgical vessel, the flow of the molten metal being such that it constantly moves vortices in the molten metal away from a tapping hole region during the tapping to thereby prevent accumulation of the vortices for vortex formation over the tapping hole. It is also presented an arrangement for carrying out the method. 1. A method for reducing vortex formation in molten metal when bottom tapping the molten metal from a metallurgical vessel in a metal making process , wherein the method comprises:tapping the molten metal via a tapping hole in the metallurgical vessel, andproviding a flow of the molten metal in the metallurgical vessel while tapping by means of a time-varying electromagnetic field applied to the metallurgical vessel and provided by an electromagnetic stirrer, wherein the time-varying electromagnetic field provides a forced convection of the molten metal in the metallurgical vessel, the flow of the molten metal being such that it constantly moves vortices in the molten metal away from a tapping hole region of the metallurgical vessel during the tapping to thereby prevent accumulation of the vortices for vortex formation over the tapping hole.2. The method as claimed in claim 1 , wherein the molten metal flow is transverse to a central axis of the tapping hole.3. The method as claimed in claim 1 , wherein the molten metal flows towards a first inner wall portion of the metallurgical vessel at the bottom of the metallurgical vessel and towards a second inner wall portion opposite the first inner wall portion at the surface of the molten metal.4. The method as claimed ...

GASEOUS BASED DESULFURIZATION OF ALLOYS

A method for desulfurizing a metal alloy comprises heating the metal alloy to a molten state. A gaseous desulfurizing compound is bubbled through the molten alloy to form a solid sulfur-containing waste phase and a molten reduced-sulfur alloy phase. The solid waste phase and the molten reduced-sulfur alloy phase are separated. The gaseous desulfurizing compound includes a constituent element selected from the group: alkali metals, alkaline earth metals, and rare earth metals. 1. A method for desulfurizing a metal alloy , the method comprising:heating the metal alloy to a molten state;bubbling a gaseous desulfurizing compound through the molten alloy to form a solid sulfur-containing waste phase and a molten reduced-sulfur alloy phase, the gaseous desulfurizing compound including a constituent element selected from the group: alkali metals, alkaline earth metals, and rare earth metals; andseparating the solid sulfur-containing waste phase and the molten reduced-sulfur alloy phase.2. The method of claim 1 , wherein the metal alloy is a nickel-based superalloy or a cobalt-based superalloy.3. The method of claim 1 , wherein the constituent element is selected from the group: Ca claim 1 , Mg claim 1 , Y claim 1 , La claim 1 , Er claim 1 , and Ce.4. The method of claim 3 , wherein the gaseous desulfurizing compound is derived from a precursor compound comprising at least one of: hydrates of a metal halide salt claim 3 , and a metal organic complex (MOC).5. The method of claim 4 , wherein the constituent element is Ca.6. The method of claim 5 , wherein the precursor compound is selected from the group: calcium chloride [CaCl]; calcium dipivaloylmethanate [Ca(CHO))]; bis(hexafluoro-acetylacetonate) calcium (II) claim 5 , [Ca(CHFO))]; bis (2 claim 5 ,2-dimethyl- claim 5 ,6 claim 5 ,6 claim 5 ,7 claim 5 ,7 claim 5 ,8 claim 5 ,8 claim 5 ,8-heptafluoro-3 claim 5 ,5-octanedione) calcium (II) claim 5 , [Ca(CHFO)]; bis(1 claim 5 ,1 claim 5 ,1-trifluoro-2 claim 5 ,4-pentanedionato) ...

ROTARY INJECTOR AND PROCESS OF ADDING FLUXING SOLIDS IN MOLTEN ALUMINUM

A rotary injector comprising an elongated shaft having a proximal end and a distal end, and an impeller at the distal end of the elongated shaft, the elongated shaft and the impeller being collectively rotatable during operation around an axis of the shaft, the rotary injector being hollow and having an internal supply conduit extending along the shaft and across the impeller, the supply conduit having an inlet at the proximal end of the shaft, a main portion extending from the inlet to a discharge portion, the discharge portion extending to an axial outlet, the discharge portion having a narrow end connecting the main portion of the supply conduit and a broader end at the axial outlet. 1. A rotary injector comprising an elongated shaft having a proximal end and a distal end , and an impeller at the distal end of the elongated shaft , the elongated shaft and the impeller being collectively rotatable during operation around an axis of the shaft , the rotary injector being hollow and having an internal supply conduit extending along the shaft and across the impeller , the supply conduit having an inlet at the proximal end of the shaft , a main portion extending from the inlet to a discharge portion , the discharge portion extending to an axial outlet , the discharge portion having a narrow end connecting the main portion of the supply conduit and a broader end at the axial outlet.2. The rotary injector of wherein the impeller has blades external to and surrounding the discharge portion.3. The rotary injector of wherein the blades are in a transversal plane coinciding with the axial position of the discharge portion.4. The rotary injector of wherein the discharge portion has a truncated conical shape.5. The rotary injector of wherein the axial outlet has a sharp edge.6. The rotary injector of wherein the discharge portion has an angle of between about 5 and 20° relative the shaft axis.7. The rotary injector of wherein the discharge portion has an angle of between 5 and ...

DROSS MANAGEMENT SYSTEM AND METHOD

A dross processing assembly includes a stirring station at which dross in a first dross recovery vessel is stirred and a pressing station at which previously stirred dross in a second dross recovery vessel is pressed simultaneously with the stirring of the dross in the first dross recovery vessel. The stirring station and the pressing station may be commonly housed in an enclosure. A conveyor system may advance dross recovery vessels through the dross processing assembly for continuous dross processing. 110-. (canceled)11. A method of recovering aluminum from dross , the method comprising:conveying in a dross processing assembly a first dross pan comprising stirred dross to a pressing station;wherein the dross in the first dross pan was stirred at a stirring station;positioning a second dross pan comprising dross at the stirring station; andsimultaneously stirring the dross in the second dross pan at the stirring station and pressing the dross in the first dross pan at the pressing station.12. The method of claim 11 , wherein the conveying and the positioning are carried out simultaneously.13. The method of claim 11 , wherein the conveying and the positioning are carried out sequentially.14. The method of claim 11 , wherein the positioning further comprises conveying the second dross pan from a staging area to the stirring station.15. The method of claim 14 , wherein an automation performs at least a portion of the stirring of the dross in the second dross pan claim 14 , at least a portion of the pressing of the dross in the first dross pan claim 14 , and at least a portion of the conveying of the dross pans.16. The method of claim 15 ,wherein a first door is between the staging area and the stirring station and a second door is between the pressing station and a retrieval area, andwherein the automation operates the first door and the second door in coordination with the stirring, pressing and conveying.17. The method of claim 11 , wherein the first dross pan is in ...

METAL MELTING FURNACE VORTEX CHAMBER BODY AND METAL MELTING FURNACE USING THE SAME

A metal melting furnace includes: a furnace body which includes a storage space storing molten metal; a vortex chamber body which includes a vortex chamber capable of communicating with the storage space of the furnace body; and a drop weir part which changes a communication state and an interruption state between the storage space and the vortex chamber, wherein the drop weir part includes a blind drop weir and an opening type drop weir which are formed as separate members, wherein at least the blind drop weir is movable up and down with respect to the vortex chamber body and is selectively positioned at an upward movement position and a downward movement position so as to switch the communication state and the interruption state, and wherein the opening type drop weir includes notches which communicate the vortex chamber and the storage space with each other in the communication state. 1. A metal melting furnace vortex chamber body with a vortex chamber capable of communicating with a storage space of a furnace body having the storage space storing molten metal , the metal melting furnace vortex chamber body comprising:a drop weir part which switches a communication state and an interruption state between the storage space and the vortex chamber,wherein the drop weir part includes a blind drop weir and an opening type drop weir which are formed as separate members,wherein at least the blind drop weir is movable up and down with respect to the vortex chamber body and is selectively positioned at an upward movement position and a downward movement position so as to switch the communication state and the interruption state, andwherein the opening type drop weir includes notches which communicate the vortex chamber and the storage space with each other in the communication state.2. The metal melting furnace vortex chamber body according to claim 1 ,wherein the blind drop weir and the opening type drop weir are all detachable from the vortex chamber body.3. The metal ...

Ultrasonic Probes With Gas Outlets for Degassing of Molten Metals

Ultrasonic probes containing a plurality of gas delivery channels are disclosed, as well as ultrasonic probes containing recessed areas near the tip of the probe. Ultrasonic devices containing these probes, and methods for molten metal degassing using these ultrasonic devices, also are disclosed. 1. An ultrasonic device comprising:an ultrasonic transducer;an ultrasonic probe attached to the transducer, the probe comprising a tip and two or more gas delivery channels extending through the probe; and a gas inlet,', 'gas flow paths through the gas delivery channels, and', 'gas outlets at or near the tip of the probe., 'a gas delivery system, the gas delivery system comprising2. The ultrasonic device of claim 1 , wherein the probe comprises stainless steel claim 1 , titanium claim 1 , niobium claim 1 , a ceramic claim 1 , or a combination thereof.3. The ultrasonic device of claim 1 , wherein the probe comprises a Sialon claim 1 , a Silicon carbide claim 1 , a Boron carbide claim 1 , a Boron nitride claim 1 , a Silicon nitride claim 1 , an Aluminum nitride claim 1 , an Aluminum oxide claim 1 , a Zirconia claim 1 , or a combination thereof.4. The ultrasonic device of claim 1 , wherein:the probe comprises a Sialon;the probe comprises from three to five gas delivery channels; andthe gas outlets are at the tip of the probe.5. The ultrasonic device of claim 1 , wherein the probe is a generally cylindrical elongated probe claim 1 , and a length to diameter ratio of the elongated probe is in a range from about 5:1 to about 25:1.6. The ultrasonic device of claim 1 , wherein the probe is a generally cylindrical elongated probe claim 1 , and a ratio of the cross-sectional area of the tip of the elongated probe to the cross-sectional area of the gas delivery channels is in a range from about 30:1 to about 1000:1.7. The ultrasonic device of claim 1 , wherein the ultrasonic device further comprises a booster between the transducer and the probe claim 1 , and the gas inlet is in the ...

NONFERROUS METAL MELTING FURNACE AND METHOD FOR MELTING NONFERROUS METAL

A vortex chamber includes an outer circumference wall, a container, an annular shoal portion provided between the container and the outer circumference wall so as to encircle the outer circumference of the container, and a dam portion protruding upward from the upper surface of the outer circumference of the container so as to partition the container from the shoal portion. An undried nonferrous metal block is fed into the shoal portion, the block having such a size that is not completely submerged into the molten metal in the shoal portion. The fed nonferrous metal block is gradually melted to have a reduced volume of small pieces and particles of nonferrous metal, which are re-circulated in the shoal portion, flown over the dam portion, and dropped into the container, thereby forming a vortex in the container in which remaining small pieces and particles submerged into the molten metal are melted. 1. A nonferrous metal melting furnace comprising:a heating chamber for heating molten metal to increase and hold the temperature of the molten metal;a vortex chamber communicated with the heating chamber, the vortex chamber being arranged to submerge and melt in a vortex of the molten metal a nonferrous metal being fed; anda re-circulation metal pump,the re-circulation metal pump being used to feed the molten metal in the heating chamber to the vortex chamber and feed the molten metal discharged from the vortex chamber back to the heating chamber, the vortex chamber comprising:an outer circumference wall configured so as to provide a flow passage through which the molten metal is fed from a side of the heating chamber, the outer circumference wall having internally a space;a container disposed at an internal center of the outer circumference wall, and having an opening at an upper side thereof and a tapered wall of an upside down conical shape at a lower side thereof;a shoal portion annularly provided between the container and the outer circumference wall so as to ...

METHOD FOR OPERATING AN ELECTRIC ARC FURNACE AND ELECTRIC ARC FURNACE

An electric arc furnace () and to a method for operating an electric arc furnace having at least one electrode () for generating an electric arc (), in which the desired value of the current (I) guided to the electrode () oscillates about a predetermined base value (I). 1. A method for operating an electric arc furnace comprising a furnace vessel for metal to be melted and having at least one electrode for generating an electric arc extending into the vessel;an electric current supply to each of the electrodes, which supply is variable over time by at least one of variations of electric current and variations of frequency; and{'sub': '0', 'the method comprising oscillating of a target value of current fed to the electrode about a pre-determined base value (I).'}2. The method as claimed in claim 1 , wherein the oscillation of the target value of the current takes place at a periodic frequency.3. The method as claimed in claim 2 , wherein the periodic frequency (f) is 0.2 Hz to 2 Hz.4. The method as claimed in claim 1 , further comprising causing the oscillation of the current (I) about the base value (I) by changing the amplitude and/or the periodic frequency (f) of the current (I).5. The method as claimed in claim 4 , further comprising increasing the periodic frequency (f) during a time segment.6. The method as claimed in claim 4 , wherein the electric arc furnace comprises three of the electrodes claim 4 , each of the electrodes having a respective electric current supply for supplying a respective electric current to each of the three electrodes claim 4 , and oscillating the three currents at a phase shift of 120°.7. The method according to claim 6 , wherein due to the oscillation of the target value of the current (I) at one after another at each of the three electrodes claim 6 , generating a longer electric arc specifically at the respective electrode affected by the oscillation claim 6 , and at the unaffected electrodes claim 6 , generating an electric arc ...

FURNACE FOR MELTING AND TREATING METAL AND METALLIC WASTE AND METHOD THEREFOR

A furnace includes a tank having outer and inner walls defining a closed canal configured to be filled with molten metal continuously circulating along the closed canal. The closed canal includes at least one heating area having a heating component configured to transfer energy to the molten metal thus overheating it; at least one loading area configured for material to be melted or treated, dragged by the overheated molten metal on its surface; a melting/treatment area configured to receive the overheated molten metal and material dragged on its surface. The overheated molten metal transfers its exceeding energy to the material, causing its melting/treatment. The furnace has a central hollow delimited by the inner wall. The furnace includes a driving component within the hollow, having a rotor with at least one magnet body. The rotor is coupled to a motor and configured to rotate upon activation of the motor, generating a magnetic field capable of causing circulation of the molten metal in a continuous and cyclical manner. 1. A furnace comprising:a tank having an outer wall and an inner wall, arranged to define a closed canal between said inner wall and said outer wall,a central hollow delimited by said inner wall,and at least one driving means located within said central hollow, wherein said at least one driving means comprises a rotor comprising at least two permanent magnets, the rotor being coupled to a motor and configured to rotate upon activation of said motor, thus generating a magnetic field, at least one heating area comprising heating means configured to transfer energy to the molten metal thus overheating said molten metal;', 'at least one loading area configured for loading metal or metallic waste into said molten metal to be melted or treated, said metal or metallic waste, in used of the furnace, being dragged by the overheated molten metal on its surface;', 'a melting/treatment area configured to receive the overheated molten metal and the metal or ...

ELECTRIC FURNACE AND METHOD FOR MELTING AND REDUCING IRON OXIDE-CONTAINING IRON RAW MATERIAL

This electric furnace includes one or more upper electrodes, one or more bottom-blowing tuyeres, a mechanical stirrer equipped with an impeller, and a charging device which injects an iron oxide-containing iron raw material. 1. An electric furnace comprising:one or more upper electrodes;one or more bottom-blowing tuyeres;a mechanical stirrer equipped with an impeller; anda charging device which injects an iron oxide-containing iron raw material.2. The electric furnace according to claim 1 , comprising:three or more of the bottom-blowing tuyeres; anda plurality of the upper electrodes,wherein, when a straight line orthogonal to a shortest line segment of individual line segments connecting centers of the upper electrodes and a center of the impeller is drawn at a point closer to the impeller between two points that equally divide the shortest line segment into three parts in a plan view,centers of at least three bottom-blowing tuyeres among the respective bottom-blowing tuyeres are present closer to the respective upper electrodes than the orthogonal straight line.3. The electric furnace according to claim 2 ,wherein, in the plan view, centers of all of the respective upper electrodes and a raw material injection opening of the charging device is present inside a polygonal shape connecting the respective centers of the three or more bottom-blowing tuyeres present closer to the respective upper electrodes than the orthogonal straight line.4. A method for melting and reducing an iron oxide-containing iron raw material in which the electric furnace according to is used claim 1 , the method comprising:when the iron oxide-containing iron raw material having an iron metallization percentage of 45% or more and 95% or less is charged from the charging device and melted and reduced in the electric furnace in which molten metal is present, immersing and rotating the impeller of the mechanical stirrer in the molten metal, thereby stirring slag present on a surface of the molten ...

CONDUCTIVE METAL MELTING FURNACE, CONDUCTIVE METAL MELTING FURNACE SYSTEM EQUIPPED WITH SAME, AND CONDUCTIVE METAL MELTING METHOD

To provide a technique that reliably and quickly melts conductive metal, there is provided a conductive metal melting method including: rotating a magnetic field device formed of a permanent magnet, which includes a permanent magnet, about a vertical axis near a driving flow channel of a flow channel that includes an inlet through which conductive molten metal flows into the flow channel from the outside and an outlet through which the molten metal is discharged to the outside and includes a vortex chamber provided between the driving flow channel provided on an upstream side and an outflow channel provided on a downstream side, and moving lines of magnetic force of the permanent magnet while the lines of magnetic force of the permanent magnet pass through the molten metal present in the driving flow channel; allowing the molten metal to flow into the vortex chamber by an electromagnetic force generated with the movement to generate the vortex of the molten metal in the vortex chamber into which the raw material is to be put; and discharging the molten metal to the outside from the outlet. The conductive metal melting method further includes driving the molten metal present in the outflow channel toward the outlet by an electromagnetic force generated with the movement of the lines of magnetic force as necessary. 1: A conductive metal melting furnace that melts a raw material of conductive metal to form molten metal , the conductive metal melting furnace comprising:a flow channel that includes an inlet through which the conductive molten metal flows into the flow channel from the outside and an outlet through which the molten metal is discharged to the outside; anda magnetic field device formed of a permanent magnet that includes a permanent magnet and is rotatable about a vertical axis,wherein the flow channel includes a driving flow channel that is provided on an upstream side, an outflow channel that is provided on a downstream side, and a vortex chamber that is ...

MAGNETIC PUMP INSTALLATION

A magnetic pump in a pump well in a molten metal furnace with a long, relatively thin side wall that wraps around a significant fraction of the circumference of the pump, which facilitates creation of an eddy current based flow field in the molten material with better magnetic coupling, thereby enhancing the effectiveness of the pump. Breach of the well wall will not result in spillage of metal outside the furnace, and the well can be monitored for any such breach or other change so that the pump can be lifted out of the well to protect it from contact with the molten metal in the event of such a breach, or other appropriate action can be taken.

MAGNETIC PUMP INSTALLATION

A magnetic pump in a pump well in a molten metal furnace with a long, relatively thin side wall that wraps around a significant fraction of the circumference of the pump, which facilitates creation of an eddy current based flow field in the molten material with better magnetic coupling, thereby enhancing the effectiveness of the pump. Breach of the well wall will not result in spillage of metal outside the furnace, and the well can be monitored for any such breach or other change so that the pump can be lifted out of the well to protect it from contact with the molten metal in the event of such a breach, or other appropriate action can be taken.

METAL MELTING APPARATUS, SCREEN PLATE FOR METAL MELTING, AND METHOD OF MELTING METAL

A metal melting apparatus capable of providing a clear melt with little oxides, even when either one or a mixture of scrap material and fresh material is supplied. Solution is provided by a metal melting apparatus including melting chamber to which a melt raw material is supplied, and gas injection system for injecting gas into melt in the melting chamber to generate a vortex of melt in the melting chamber. 1. A metal melting apparatus comprising:a melting chamber to which a melt raw material is supplied, anda gas injection system for injecting gas into melt in the melting chamber to generate a vortex of melt in the melting chamber.2. The metal melting apparatus according to claim 1 ,wherein the gas is an inert gas which is inactive to the melt.3. The metal melting apparatus according to claim 1 ,wherein the gas injection system comprises a plurality of gas injection ports to inject the gas from a plurality of locations in the melting chamber.4. The metal melting apparatus according to claim 1 ,wherein the gas is injected in an upward spiral direction along an interior wall surface of the melting chamber.5. The metal melting apparatus according to claim 1 ,wherein the melting chamber is in a part of a melt circulation channel, andwherein the melt circulated to the melting chamber is supplied to the melting chamber as a fluid for generating a vortex together with the injected gas.6. The metal melting apparatus according to claim 1 , further comprising:a supply line for supplying the melt from the melting chamber to a subsequent step, andimpacting means provided in the supply line or in the melting chamber in the vicinity of the supply line, for making an impact on unmolten melt raw material that is flowing out of the melting chamber to the subsequent step.7. The metal melting apparatus according to claim 6 ,wherein the impacting means is an interior wall of the supply line or an interior wall of the melting chamber in the vicinity of the supply line, configured to ...

PROCESS FOR PRODUCING METALS AND METAL ALLOYS USING MIXING COLD HEARTH

A metallurgical system for producing metals and metal alloys includes a fluid cooled mixing cold hearth having a melting cavity configured to hold a raw material for melting into a molten metal, and a mechanical drive configured to mount and move the mixing cold hearth for mixing the raw material. The system also includes a heat source configured to heat the raw material in the melting cavity, and a heat removal system configured to provide adjustable insulation for the molten metal. The mixing cold hearth can be configured as a removal element of an assembly of interchangeable mixing cold hearths, with each mixing cold hearth of the assembly configured for melting a specific category of raw materials. A process includes the steps of providing the mixing cold hearth, feeding the raw material into the melting cavity, heating the raw material, and moving the mixing cold hearth during the heating step. 1. A process for producing metals and metal alloys comprising:providing a mixing cold hearth having a melting cavity configured to hold a raw material for melting into a molten metal, an induction coil configured to generate an electromagnetic field for stirring and heating the raw material in the melting cavity into the molten metal, and a mechanical drive configured to move the mixing cold hearth for mixing the raw material in the melting cavity;feeding the raw material into the melting cavity;heating the raw material in the melting cavity;stirring the raw material during the heating step using the electromagnetic field; andmoving the mixing cold hearth during the heating step using the mechanical drive.2. The process of wherein the moving step includes both oscillatory movement and rotational movement of the mixing cold hearth or a combination thereof.3. The process of further comprising providing a heat removal system having a plurality of fluid cooled tiles configured to provide adjustable insulation for the molten metal; and controlling parameters within the ...

Method And Arrangement For Improving Heat Transfer For Tundish Plasma Heating

An arrangement for heat transfer to a melt in a tundish in a continuous casting process, wherein the tundish includes at least one outlet and an inlet, the arrangement including a heating chamber, a plasma heating apparatus including a plasma torch positioned inside the heating chamber, wherein the plasma heating apparatus is mounted on an arm and arranged to operate through a hole in the heating chamber with a distance to the melt and an electromagnetic stirrer placed outside of the heating chamber and arranged to electromagnetically stir the melt. The heating chamber further includes a pair of weirs installed at an upper part of the heating chamber and a pair of dams installed at a lower part of the heating chamber and the electromagnetic stirrer is arranged to electromagnetically stir the melt in a region of the heating chamber, wherein the region is enclosed by the weirs and dams. 1. A method for improving a heat transfer of a melt in a tundish in a continuous casting process , comprising:mounting a plasma heating device with a plasma torch positioned inside a heating chamber, wherein the heating chamber is positioned above the tundish with a distance to the melt,installing a pair of weirs at an upper part of the heating chamber,installing a pair of dams at an lower part of the heating chamber,mounting an electromagnetic stirrer on an outer surface of the tundish for electromagnetically stirring the melt,applying plasma heating to the melt inside of the tundish through a heating chamber, andelectromagnetically stirring the melt in a region of the heating chamber, wherein the region is enclosed by the weirs and dams.2. The method according to further comprising controlling a stirring speed of the electromagnetically stirring in a range of 0.2-0.5 m/sec.3. The method according to further comprising controlling a stirring speed of the electromagnetically stirring higher than 0.5 m/sec.4. The method according to further comprising electromagnetically stirring the ...

ROTARY DEGASSERS AND COMPONENTS THEREFOR

Disclosed are degassers, couplings, impeller shafts and impellers for use in molten metal. One such coupling transfers gas into an impeller shaft, the coupling having a smooth, tapered internal surface to align with a corresponding surface on the impeller shaft and help prevent gas leakage and to assist in preventing damage to the impeller shaft. Improved impellers for shearing and mixing gas are also disclosed, as is a degasser including one or more of these components. 1. A shaft that cannot be threadingly connected to a corresponding coupling for use in a rotary degasser , the shaft comprising:a first end, a second end, an outer sidewall, and an inner passage for transferring gas, wherein the first end is tapered and not threaded, and one or more grooves that are not threads formed adjacent the tapered first end; wherein the shaft is configured to be received in the corresponding coupling so that the tapered first end mates with an inner tapered portion in the coupling, and one or more retainers are received in the coupling such that each is positioned to be pressed against one of the one or more grooves, in order to apply driving force from the coupling to the shaft; wherein the shaft has a outer portion between the first end and the second end and the one or more grooves is between the center portion and the tapered part of the first end.2. The shaft of that has a plurality of grooves.3. The shaft of wherein the grooves are not vertically aligned.4. The shaft of wherein the at least one groove is vertical.5. The shaft of wherein the at least one groove is circular.6. The shaft of wherein at least two of the plurality of grooves are each configured to align with an opening on the coupling.7. The shaft of wherein the second end of the shaft is threaded.8. The shaft of wherein the second end of the shaft is configured to threadingly connect to a rotor.9. The shaft of wherein the taper is at an angle between 20° and 45°.10. The shaft of wherein the one or more ...

MOLTEN IRON REFINING METHOD AND DEVICE THEREOF

Provided are a molten metal refining device and method. The molten metal refining method includes: preparing molten metal; dipping an impeller into the molten metal; supplying a liquid dephosphorization agent on top of the molten metal; and stirring the molten metal by rotating the impeller, wherein a solid dephosphorization agent in a powder state is supplied through the lower portion of the impeller in the stirring of the molten metal, thereby improving the stirring efficiency of the molten metal and efficiently controlling the phosphorus concentration in the molten metal. 1. A device for refining molten metal , comprising:an impeller extending in a vertical direction over a ladle in which the molten metal is charged; anda liquid dephosphorization agent supply part disposed over the ladle to supply a molten state liquid dephosphorization agent to a top portion of the molten metal, an impeller body;', 'blades provided on an upper outer circumferential surface of the impeller body;', 'a supply pipe which is disposed inside the impeller body along a lengthwise direction of the impeller body and through which a solid dephosphorization agent in a powder state and a transfer gas are supplied; and', 'blowing nozzles partially passing through a lower portion of the impeller body and communicating with the supply pipe., 'wherein the impeller comprises2. The device of claim 1 , wherein the blades are positioned above approximately the midpoint of a total depth of the molten metal claim 1 , and the blowing nozzles are positioned under approximately the midpoint of the total depth of the molten metal.3. The device of claim 2 , wherein the blades are disposed in a region of approximately 10% to approximately 30% with respect to a total depth of the molten metal from a molten metal surface of the molten metal.4. The device of claim 1 , wherein the liquid dephosphorization agent supply part is connected to a discharge pipe provided with a heater to heat the liquid ...

Ultrasonic Probes with Gas Outlets for Degassing of Molten Metals

Ultrasonic probes containing a plurality of gas delivery channels are disclosed, as well as ultrasonic probes containing recessed areas near the tip of the probe. Ultrasonic devices containing these probes, and methods for molten metal degassing using these ultrasonic devices, also are disclosed. 125-. (canceled)26. An ultrasonic device comprising:an ultrasonic transducer;an ultrasonic probe attached to the transducer, the probe comprising a tip and two or more gas delivery channels extending through the probe; and a gas inlet,', 'gas flow paths through the gas delivery channels, and', 'gas outlets at or within about 2 cm of the tip of the probe;, 'a gas delivery system, the gas delivery system comprisingwherein the probe comprises a ceramic.27. The ultrasonic device of claim 26 , wherein the gas outlets are at or within about 1 cm of the tip of the probe.28. The ultrasonic device of claim 26 , wherein the gas outlets are at the tip of the probe.29. The ultrasonic device of claim 26 , wherein the probe comprises a Sialon claim 26 , a Silicon carbide claim 26 , a Boron carbide claim 26 , a Boron nitride claim 26 , a Silicon nitride claim 26 , an Aluminum nitride claim 26 , an Aluminum oxide claim 26 , a Zirconia claim 26 , or a combination thereof.30. The ultrasonic device of claim 26 , wherein the probe comprises a Sialon.31. The ultrasonic device of claim 30 , wherein a length to diameter ratio of the probe is in a range from about 5:1 to about 25:1.32. The ultrasonic device of claim 30 , wherein the probe comprises from two to eight gas delivery channels.33. The ultrasonic device of claim 30 , wherein a ratio of the cross-sectional area of the tip of the probe to the cross-sectional area of the gas delivery channels is in a range from about 30:1 to about 1000:1.34. The ultrasonic device of claim 26 , further comprising a booster between the transducer and the probe.35. A method for reducing an amount of a dissolved gas and/or an impurity in a molten metal bath ...

METAL MELTING FURNACE VORTEX CHAMBER BODY AND METAL MELTING FURNACE USING THE SAME

A metal melting furnace includes: a furnace body including a storage space storing molten metal; a vortex chamber body including a vortex chamber communicating with the storage space, the vortex chamber body including a partition plate serving as a drop weir uprightly formed inside the vortex chamber, the partition plate disposed at a communication side with respect to the storage space in the vortex chamber so that the longitudinal direction of the partition plate follows the communication direction and divides the communication side to form first and second vortex chamber openings positioned at both sides of the partition plate and communicating with both the storage space and the vortex chamber; and a molten metal whirling gap formed between a front end portion of the partition plate positioned inside of the vortex chamber in the longitudinal direction and an inner wall of the vortex chamber body facing the front end portion. 1. A metal melting furnace vortex chamber body with a vortex chamber communicating with a storage space of a furnace body having the storage space storing molten metal , the metal melting furnace vortex chamber body comprising:a partition plate which is provided as a drop weir uprightly formed inside the vortex chamber of the vortex chamber body,wherein the partition plate is disposed at a communication side with respect to the storage space in the vortex chamber so that the longitudinal direction of the partition plate follows the communication direction and divides the communication side so as to form first and second vortex chamber openings positioned at both sides of the partition plate and communicating with both the storage space and the vortex chamber, andwherein a molten metal whirling gap is formed between a front end portion of the partition plate positioned at the inside of the vortex chamber in the longitudinal direction and an inner wall of the vortex chamber body facing the front end portion.2. The metal melting furnace vortex ...

APPARATUS FOR INDUCING FLOW IN A MOLTEN MATERIAL

The apparatus includes a furnace having a furnace chamber (), a port () in fluid communication with the furnace chamber having an inclined lower wall (), and a bi-directional induction unit () mounted to the inclined lower wall for inducing flow in molten material in the port. A retractable channel plate assembly () is selectively positionable in the port to define an extraction flow channel () for the molten material between the channel plate assembly and the inclined lower wall. A drive arrangement () moves the channel plate assembly into and out of the port and the control of a control system () which includes a sensor system () for measuring the level of the molten material in the port and a feedback system for providing information regarding the position of the channel plate assembly. A method of operating the apparatus is also disclosed. 1. Apparatus for inducing flow in a molten material , the apparatus comprising a furnace having a furnace chamber , a port in fluid communication with the furnace chamber and having an inclined lower wall , a bi-directional induction unit mounted to the inclined lower wall of the port for inducing flow in molten material in the port , a retractable channel plate assembly selectively positionable in the port to define an extraction flow channel for the molten material between the channel plate assembly and the inclined lower wall , a drive arrangement for moving the channel plate assembly into and out of the port , a control system for controlling the drive system , the control system including a sensor system for measuring the level of the molten material in the port and a feedback system for providing information regarding the position of the channel plate assembly.2. Apparatus as claimed in claim 1 , in which the apparatus can be operated in an extraction mode to extract molten material from the furnace chamber through the port claim 1 , the control system being configured when operated in the extraction mode to advance the ...

Method And A Control System For Controlling A Melting And Refining Process

A method and device for controlling a melting and refining process in an electric arc furnace for melting a metal, wherein the electric arc furnace includes molten and solid metal and a slag layer on the surface of the molten metal, wherein an electromagnetic stirrer is arranged for stirring the molten metal. The method includes calculating/determining masses of the molten and solid metal at a point of time, wherein the calculation is based on initial values of the molten and solid metal, an arc power supplied to the electric arc furnace, and temperatures of the molten and solid metal, determining a stirring power based on the calculated/determined masses, and supplying the determined stirring power to the electromagnetic stirrer.

Transferring molten metal using non-gravity assist launder

A system and method for transferring molten metal from a vessel and into a launder is disclosed. The system includes at least a vessel for containing molten metal, an overflow (or dividing) wall, and a device or structure, such as a molten metal pump, for generating a stream of molten metal. The dividing wall divides the vessel into a first chamber and a second chamber, wherein part of the second chamber has a height H 2. The device for generating a stream of molten metal, which is preferably a molten metal pump, is preferably positioned in the first chamber. When the device operates, it generates a stream of molten metal from the first chamber and into the second chamber. When the level of molten metal in the second chamber exceeds H 2, molten metal flows out of the vessel and into the launder. The launder has a horizontal angle of between 0° and −10° to help prevent dross from being pulled by gravity into downstream vessels.

THERMOPLASTIC KETTLE AUXILIARY HEAT EXCHANGER SYSTEM

An auxiliary heat exchanger that is used in conjunction with thermoplastic melter kettles. The auxiliary heat exchanger receives molten thermoplastic material from the bottom of a melter kettle, transports the molten thermoplastic material though the auxiliary heat exchanger and feeds the molten thermoplastic material into the top of the melter kettle thereby mixing hotter molten thermoplastic material from the bottom of the melter kettle into cooler thermoplastic material near the top of the melter kettle. The auxiliary heat exchanger includes an oil bath chamber and parallel heat transfer tubes that are arranged in a serpentine configuration and include motor drive augers to transport molten thermoplastic material through the auxiliary heat exchanger. 1. In a melter kettle for melting thermoplastic pavement marking material wherein the melter kettle is provided with a combustion chamber the improvement comprising an auxiliary heater coupled to the melter kettle , the auxiliary heater comprising an oil bath chamber through which heated oil is circulated and a configuration of heat transfer tubes within the oil bath chamber through which molten thermoplastic material can flow , the configuration of heat transfer tubes is coupled at one end to a lower portion of the melter kettle and coupled at another end to the top of the melter kettle for receiving molten thermoplastic from the lower portion of the melter kettle and discharging molten thermoplastic material to the top of the melter kettle.2. The melter kettle of further comprising a heat dome chamber in the bottom of melter kettle.3. The melter kettle of claim 2 , further comprising an exhaust gas conduit that is provided between the top of the heat dome chamber and the top of the melter kettle through which exhaust gas conduit combustion gases received in the heat dome chamber can be exhausted from the top of the melter kettle.4. The melter kettle of claim 1 , wherein the configuration of heat transfer tubes ...

System And Method For Determining Temperature Of A Metal Melt In An Electric Arc Furnace

A system and a method for determining/predicting a tapping time for a metal melt in an electric arc furnace (EAF), at least one electrode is provided for melting the metal melt until it reach a target tapping temperature, the EAF further includes a slag and smoke layer on the surface of the metal melt, wherein an electromagnetic stirrer is provided for stirring the metal melt. 1. A method for determining/predicting a tapping time for a metal melt in an electric arc furnace (EAF) , wherein at least one electrode is provided for melting the metal melt until it reach a target tapping temperature , wherein the EAF further comprises a slag and smoke layer on the surface of the metal melt , wherein an electromagnetic stirrer is provided for stirring the metal melt , the method comprisinga) supplying a power to the electrode in order to melt a scrap to a metal melt,b) electromagnetic stirring the metal melt in the EAF,c) arranging a lance unit dedicatedly configured to including an inert gas,d) blowing away the slag and smoke from the surface of the metal melt by the dedicatedly arranged lance unit,e) non-contactingly measuring a temperature of the metal melt,f) receiving the measured temperature,g) calculating a temperature profile based on the received temperature,h) estimating/predicting a tapping temperature at a time point based on the calculated temperature profile, andi) determining a tapping time based on the estimated temperature, the target tapping temperature and the power supplied to the electrode.2. The method according to claim 1 , comprisingj) re-calculating/adjusting the temperature profile upon receiving a new measured temperature,k) estimating/predicting a tapping temperature at a time point based on the re-calculated/adjusted temperature profile, andl) determining a tapping time based on the estimated temperature, the target tapping temperature and the power supplied to the electrode.3. A system for determining/predicting a tapping time of a metal melt ...

HEAT DOME TEMPERATURE REGULATION SYSTEM

A thermoplastic melter kettle having a heat dome chamber from which combustion gases are exhausted through a conduit that connects between a top of the heat dome chamber and the top of the melter kettle. An adjustable venting arrangement coupled to the conduit allows for adjustment of the flow of exhaust gases through the conduit. 1. In a melter kettle for melting thermoplastic pavement marking material wherein the melter kettle is provided with a combustion chamber and a heat dome chamber in the bottom of melter kettle the improvement wherein an exhaust gas conduit is provided between the top of the heat dome chamber and the top of the melter kettle through which exhaust gas conduit combustion gases received in the heat dome chamber can be exhausted from the top of the melter kettle.2. The melter kettle of claim 1 , wherein the exhaust gas conduit is provided with cooperating vents that can be adjusted to regulate the flow of exhaust gases therethrough.3. The melter kettle of claim 1 , wherein the cooperating vents are provided in adjacent coaxial rotating structures.4. The melter kettle of claim 1 , wherein the melter kettle further include rotating agitators that rotate about the exhaust gas conduit.5. The melter kettle of claim 1 , wherein the exhaust gas conduit comprises a dome chimney stack tube that is located within a tube drive shaft that rotates about the dome chimney stack tube.6. The melter kettle of claim 5 , further including rotating agitators that are attached to the tube drive shaft to rotate with the tube drive shaft.7. The melter kettle of claim 5 , further including a motor positioned above the top of the melter kettle which drives rotation of the tube drive shaft.8. The melter kettle of claim 6 , further including a motor positioned above the top of the melter kettle which drives rotation of the tube drive shaft.9. The melter kettle of claim 1 , further comprising a kettle side heat chamber through which combustion gases in the combustion ...

HOT MELT ADHESIVE SUPPLY AND METHODS ASSOCIATED THEREWITH

A flexible bag system can dispense particulate hot melt adhesive. The flexible bag system includes an articulation device in contact with the flexible bag body and manipulates the flexible bag body to maintain fluidity of the particulate hot melt adhesive out of the outlet. A system for supplying particulate hot melt adhesive is also disclosed. The system includes an outer housing, a flexible inner housing disposed inside the outer housing that receives the particulate hot melt adhesive, a transfer opening disposed inside the flexible inner housing and through which the particulate hot melt adhesive is transferred, and an agitator in contact with the flexible inner housing, where the agitator applies a lateral force to a surface of the flexible inner housing. 1. A flexible bag system configured to dispense particulate hot melt adhesive , the flexible bag system comprising:a flexible bag body having an outer surface and an inner surface, the flexible bag body being configured to hold the particulate hot melt adhesive;an outlet in fluid communication with the interior of the flexible bag body, the outlet being configured to output particulate hot melt adhesive to a melter; andan articulation device in contact with the flexible bag body, and configured to manipulate the flexible bag body to maintain fluidity of the particulate hot melt adhesive out of the outlet.2. The flexible bag system of claim 1 , wherein the articulation device is within the flexible bag body and contacts the inner surface of the flexible bag body.3. The flexible bag system of claim 2 , wherein the articulation device comprises one or more end pieces connected to a drive mechanism by one or more corresponding arms claim 2 , the one or more end pieces being coupled to the inner surface of the flexible bag body.4. The flexible bag system of claim 3 , wherein the drive mechanism is an eccentric drive mechanism that rotates the one or more arms to manipulate the flexible bag body.5. The flexible bag ...

IMPROVEMENTS IN AND RELATING TO APPARATUS FOR STIRRING AND METHODS OF STIRRING

A method of stirring and apparatus for stirring using electromagnetic stirrer units is provided. The method and apparatus are particularly useful in relation to molten metal stirring. Each stirrer unit is mounted on a moveable carriage so that it can be moved between a first location, a second location and potentially further locations. The same stirrer unit is used to provide stirring at each location, so allowing multiple locations to be stirred but only requiring a single stirrer unit to do so. The method and apparatus also provide convenient connection of air cooling to the stirrer unit. 1. A method of stirring , the method including:a) providing a number of electromagnetic stirrer units, each stirrer unit being moveably mounted;b) providing a number of locations at which stirring is to be provided by a stirrer unit;c) providing stirring at a first location from amongst the number of locations using a stirrer unit;d) providing stirring at a second location from amongst the number of locations using the same stirrer unit, the second location being different to the first location.2. An apparatus for stirring , the apparatus including:a) a number of electromagnetic stirrer units;b) a moveable mounting for each stirrer unit; andb) a number of locations at which stirring is to be provided by a stirrer unit; wherein, the apparatus has a first state in which a stirring unit is at a first location selected from amongst the number of locations; andthe apparatus has a second state in which the same stirring unit is at a second location selected from amongst the number of locations, the second location being different to the first location.3. The apparatus according to in which the stirrer unit is in fluid communication with a source of coolant claim 2 , the coolant being air claim 2 , when at the first location.4. The apparatus according to in which the stirring is stirring of molten metal and/or is stirring a furnace and/or a ladle and/or a storage vessel and/or a ...

ELECTRIC IMMERSION ALUMINUM HOLDING FURNACE WITH CIRCULATION MEANS AND RELATED METHOD

A process to hold molten aluminum alloy in a refractory lined vessel using heating elements disposed within ceramic immersion heating tubes to provide accurate temperature metal for the casting industry. The vessel is lined with multi thicknesses of high insulating refractory materials to minimize heat loss with contoured corners to allow smooth flow of circulating metal provided by a gear drive with rotary shaft and impeller. The heating elements are housed in a ceramic protection tube to prevent aluminum leakage which would result in element failure. The receiving and outlet wells are separated by refractory arches. An insulated inert gas purged cover is used over the heat chamber to reduce heat loss and allow for an inert purge gas to minimize surface oxidation. A thermocouple for temperature control is positioned in the exit chamber. A ceramic drain plug is provided to remove metal for maintenance. 1. A system comprising:an electric immersion holding furnace having refractory walls engaging an insulated floor, wherein the refractory walls engaging the insulated floor define a holding chamber;a heating element disposed within an immersion tube, wherein the immersion tube extends into the holding chamber; andmeans for circulating molten metal within the electric immersion holding furnace in a substantially horizontal direction.2. The system of claim 1 , wherein the immersion tube further comprises silicon nitride.3. The system of claim 1 , wherein the immersion tube further comprises silicon carbide.4. The system of claim 1 , wherein the immersion tube further comprises silicon nitride and a compound configured to withstand the heat of the electric immersion holding furnace.5. An electric immersion holding furnace comprising:refractory walls operatively connected to an insulated floor, wherein the refractory walls and insulated floor define a holding chamber;an immersion tube, extending through a refractory wall and disposed within the holding chamber;a motor ...

IMPELLER AND METHOD OF MELT-POOL PROCESSING METHOD USING THE SAME

An impellor for stirring a melt pool includes: an impellor body extending in the length direction; a blowing nozzle which is provided in such a way as to pass through one part at the bottom end of the impellor body; and a blade provided on the upper part of the impellor body. As a result, when the impellor is used, a stirring flow produced due to the blade and a stirring flow due to substances blown into the melt-pool via the blowing nozzle correspond to each other, and the two flows are combined such that the overall stirring force is improved. Consequently, it is possible to improve the efficiency of stirring by the impeller as compared with hitherto, and, as a result, refining efficiency in the refining step is improved as the rate of reaction between the melt-pool and additives is increased. 1. An impeller for stirring melt-pool , comprising:an impeller body extending in a longitudinal direction;a blowing nozzle configured to pass through a portion of a lower portion of the impeller body; anda blade installed at an upper portion of the impeller body.2. The impeller of claim 1 , wherein the impeller body is submerged in a container containing the melt-pool claim 1 , andthe impeller body is submerged at least from a bath surface of the melt-pool to a lower region of the melt-pool.3. The impeller of claim 2 , further comprising a supply tube which is configured to longitudinally pass through an inside of the impeller body and has a lower end communicating with the blowing nozzle.4. The impeller of claim 2 ,wherein when it is assumed that the melt-pool contained in the container has a height of H,the blade is positioned at a region above a (½)H position from a bottom surface of the container, andthe blowing nozzle is positioned at a region under the (½)H position from the bottom surface of the container.5. The impeller of claim 4 ,wherein the blade is installed adjacent to the bath surface of the melt-pool and the blowing nozzle is provided adjacent to the bottom ...

A DEVICE AND METHOD FOR HIGH SHEAR LIQUID METAL TREATMENT

A high shear liquid metal treatment device for treating metal includes a barrel, a rotor shaft, rotor fans, and stator plates. The barrel has a longitudinal axis that extends between an upper end and a lower end, and an opening at its upper and lower ends. The rotor shaft is mounted centrally through, and parallel to the longitudinal axis. The rotor fans are mounted along an axial length of the shaft. The stator plates are formed on an inner surface of the barrel and are located between adjacent rotor fans. Each stator plate has at least one passage formed therethrough to allow fluid to pass through the plate; and upper and lower surfaces of each stator plate are formed to be within the minimum distance of an adjacent rotor fan. The minimum distance is between 10 μm and 10 mm. The device allows improved treatment of liquid and semi-liquid metals during processing.

METAL MELT CIRCULATING DRIVE DEVICE AND MAIN BATH INCLUDING THE SAME

A melt circulating drive device mounted on a side wall of a main bath and driven to agitate nonferrous metal melt present in a melt storage room storing nonferrous metal melt of the main bath. The melt circulating drive device includes a melt drive tank, a melt drive unit, and a partition plate. The melt drive tank includes a hermetically-sealed drive chamber including an opening allowing the drive chamber to communicate with the melt storage room, and the melt drive tank stores melt, which flows from the opening, in the drive chamber. The melt drive unit includes a permanent magnet unit rotated about a first up and down axis while making magnetic lines of force up and down pass through the melt, and a drive unit for the permanent magnet unit that rotates the melt, about the first up and down axis by rotationally driving the permanent magnet unit. 1. A melt circulating drive device that is mounted on a side wall of a main bath and is driven to agitate nonferrous metal melt present in a melt storage room storing nonferrous metal melt of the main bath , the melt circulating drive device comprising:a melt drive tank that includes a hermetically-sealed drive chamber, the drive chamber including an opening allowing the drive chamber to communicate with the melt storage room, and the melt drive tank storing melt, which flows from the opening, in the drive chamber;a melt drive unit that is installed above the melt drive tank, and includes a permanent magnet unit that is rotated about a first up and down axis while making magnetic lines of force pass through along the up and down direction the melt present in the drive chamber of the melt drive tank, and a drive unit for the permanent magnet unit that rotates the melt, which is present in the drive chamber, about the first up and down axis by rotationally driving the permanent magnet unit; anda partition plate that is disposed upright in the drive chamber of the melt drive tank along a direction where the drive chamber and ...

Transferring molten metal from one structure to another

A system for transferring molten metal from a vessel and into one or more of a ladle, ingot mold, launder, feed die cast machine or other structure is disclosed. The system includes at least a vessel for containing molten metal, an overflow (or dividing) wall, and a device or structure, such as a molten metal pump, for generating a stream of molten metal. The dividing wall divides the vessel into a first chamber and a second chamber, wherein part of the second chamber has a height H 2 . The device for generating a stream of molten metal, which is preferably a molten metal pump, is preferably positioned in the first chamber. When the device operates, it generates a stream of molten metal from the first chamber and into the second chamber. When the level of molten metal in the second chamber exceeds H 2 , molten metal flows out of the vessel and into another structure, such as into one or more ladles and/or one or more launders.

CHAOTIC STIRRING DEVICE AND METHOD COMBINING PLASMA ARC SMELTING AND PERMANENT MAGNET

A chaotic stirring device combining plasma arc smelting and permanent magnet including a furnace body; the furnace body is provided therein with a water-cooled copper crucible; the center of an upper surface of the water-cooled copper crucible is a groove for placing raw metals, and the water-cooled copper crucible is internally a hollow cavity; a return pipe is disposed directly below the groove in the hollow cavity; an upper end of the return pipe is vertical upward, and is horizontally provided with a filter screen; a spherical magnet is placed between the filter screen and the groove; one side of the water-cooled copper crucible is provided with a first water inlet pipe and a first water outlet pipe; the first water inlet pipe is connected to the hollow cavity, and the first water outlet pipe is connected to the bottom of the return pipe. 1. A chaotic stirring device combining plasma arc smelting and permanent magnet , wherein the device comprises a furnace body; the furnace body is provided therein with a water-cooled copper crucible; the center of an upper surface of the water-cooled copper crucible is a groove for placing raw metals;the water-cooled copper crucible is internally a hollow cavity; a return pipe is disposed at a place directly below the groove in the hollow cavity; an upper end of the return pipe is vertical upward, and is horizontally provided with a filter screen; a spherical magnet is placed between the filter screen and the groove; one side of the water-cooled copper crucible is provided with a first water inlet pipe and a first water outlet pipe;the first water inlet pipe is connected to the hollow cavity, and the first water outlet pipe is connected to the bottom of the return pipe, to form a water flow passage in the water-cooled copper crucible.2. The chaotic stirring device combining plasma arc smelting and permanent magnet according to claim 1 , wherein a tungsten electrode and a nozzle are disposed directly above the groove claim 1 , ...

DEVICE FOR PRODUCING SEMI-SOLID SLURRY

A device for producing semi-solid slurry, including a height adjustment mechanism, a position adjustment mechanism, a melt protection mechanism, a support mechanism, a revolving pipe, guide mechanisms, thermally-adapted elastic supports, a driving mechanism of the revolving pipe, and a cooling module. The height adjustment mechanism is a box structure including an upper casing and a lower casing. The position adjustment mechanism includes a stationary rail and a moving rail support, and the stationary rail is fixed on the upper casing of the height adjustment mechanism. The melt protection mechanism includes a seal box including a base plate fixed on the moving rail support. The support mechanism includes a main support frame and an angle adjustment bracket, the main support frame is fixed on the base plate of the seal box, and the angle adjustment bracket is mounted on the main support frame. 1. A device for producing semi-solid slurry , comprising:a height adjustment mechanism, the height adjustment mechanism being a box structure comprising an upper casing and a lower casing;a position adjustment mechanism, the position adjustment mechanism comprising a stationary rail and a moving rail support, the stationary rail being fixed on the upper casing of the height adjustment mechanism;a melt protection mechanism, the melt protection mechanism comprising a seal box comprising a base plate fixed on the moving rail support;a support mechanism, the support mechanism comprising a main support frame and an angle adjustment bracket, the main support frame being fixed on the base plate of the seal box, and the angle adjustment bracket being mounted on the main support frame;a revolving pipe, the revolving pipe comprising a material inlet and a material outlet and being supported by a support system, the support system comprising a front pillar, a rear pillar, and four guide wheels; the four guide wheels being hinged to the front pillar and the rear pillar, respectively; the ...

DEGASSER SNORKEL WITH SERPENTINE FLOW PATH COOLING

A snorkel () having a double shell core () that defines an annular gap () between the shells and that has an array of baffles () arranged in the annular gap to define a serpentine flow path for cooling gases that pass through the annular gap. In an embodiment, a snorkel includes a flange () that defines an internal passageway () such that the fluid pathway through annular gap () includes passage of cooling medium through internal passageway (). 1. A snorkel for use with a reaction vessel for degassing molten metal , said snorkel comprising:a first shell having an upper edge and a lower edge, said first shell defining a closed an outer surface and a closed an inner surface between said upper and lower edges;a second shell having an upper edge and a lower edge, said second shell defining a closed an outer surface and a closed an inner surface between said upper and lower edges, said second shell being oriented outside said first shell with the outer surface of said first shell opposing the inner surface of said second shell to define an annular gap therebetween, said second shell having an inlet opening and an outlet opening that are in fluid communication with said annual gap;a first refractory lining that is secured to the interior surface of said first shell;a second refractory lining that is secured to the outer surface of said second shell;an array of baffles, each baffle in said array of baffles being located in said annular gap between the outer surface of said first shell and the inner surface of said second shell and being located at a different respective longitudinal position of said annular gap, longitudinally adjacent baffles in said array cooperating with the outer surface of said first shell and the inner surface of said second shell to define at least first and second passageways, said inlet opening being in fluid communication with said outlet opening through said first passageway in series with said second passageway, at least one of said baffles ...

HOT MELT ADHESIVE SUPPLY AND METHODS ASSOCIATED THEREWITH

A melter melts particulate hot melt adhesive into a liquefied form. The melter includes a heated receiving device having an interior with an inlet that receives the particulate hot melt adhesive and an outlet. The heated receiving device melts the particulate hot melt adhesive and directs the liquified hot melt adhesive to the outlet. A prepackaged container holds a supply of the particulate hot melt adhesive and includes an outlet. A particulate hot melt adhesive feed device allows the particulate hot melt adhesive to be directed from the outlet of the prepackaged container to the inlet of the heated receiving device. 1. A melter configured to melt particulate hot melt adhesive into a liquefied form , the melter comprising:a heated receiving device having an interior with an inlet configured to receive the particulate hot melt adhesive and an outlet, the heated receiving device operative to melt the particulate hot melt adhesive and direct the liquified hot melt adhesive to the outlet;a prepackaged container holding a supply of the particulate hot melt adhesive and including an outlet; anda particulate hot melt adhesive feed device allowing the particulate hot melt adhesive to be directed from the outlet of the prepackaged container to the inlet of the heated receiving device.2. The melter of claim 1 , wherein the prepackaged container further comprises a flexible bag.3. The melter of claim 1 , wherein the prepackaged container further comprises a rigid container.4. The melter of claim 1 , further comprising a cover on the outlet of the prepackaged container claim 1 , the cover capable of being opened for establishing a flow path for the particulate hot melt adhesive through the outlet of the prepackaged container.5. The melter of claim 4 , wherein the cover further comprises a rupturable element.6. The melter of claim 1 , further comprising:a container mounting component positioned adjacent the heated receiving device, wherein the prepackaged container is directly ...

Lance Drive System

A rotary lance drive for moving a lance during the injecting of gas and/or reagents into molten metal.

IMPROVEMENTS IN AND RELATING TO APPARATUS FOR STIRRING AND METHODS OF STIRRING

A method of stirring and apparatus for stirring are provided. The method includes: a) providing a number of electromagnetic stirrer units, each stirrer unit being moveably mounted on a stirrer support carriage; b) providing a number of locations at which stirring is to be provided by a stirrer unit; c) providing stirring at a first location from amongst the number of locations using a stirrer unit; d) providing stirring at a second location from amongst the number of locations using the same stirrer unit, the second location being different to the first location; and wherein the stirrer unit has a first position relative to the stirrer support carriage during movement between the first location and the second location and the stirrer unit has a second position relative to the stirrer support carriage at the first location and at the second location during stirring. The method allows the stirring unit to be readily conveyed between the locations, whilst also allowing the stirring unit to be optimally positioned for the provision of stirring. 2. A method according to claim 1 , in which the stirrer unit has a first position which is a transit position claim 1 , the first position is used during movement of the stirrer unit from the first location to the second location claim 1 , the stirrer unit does not provide stirring when in the first position; and the stirrer unit has a second position which is a use position claim 1 , the second position is not used during movement of the stirrer unit from the first location to the second location claim 1 , the stirrer unit provides stirring when in the second position.3. A method according to in which claim 1 , when the stirrer support carriage is at the first location claim 1 , a stirrer support component provided on the stirrer support carriage is aligned with a stirrer support element provided separately from the stirrer support carriage and when the stirrer support carriage is at the second location claim 1 , a stirrer ...

IMPROVEMENTS IN AND RELATING TO STIRRING OF MOLTEN METALS

Apparatus and methods for stirring a molten metal are provided. The apparatus comprising: an electromagnetic stirrer, the electromagnetic stirrer including a core, the core being provided with two or more teeth, the core being provided with two or more electrically conducting coils; connections for applying a current to the electrically conducting coils; wherein the two or more teeth have an end proximal the core and an end distal the core, the end distal the core defining a tooth end face, the tooth end face for at least one of the teeth not being aligned with the tooth end face for at least one of the other teeth. In this way the air gap between the teeth and the container in which molten metal is to be stirrer can be kept small, even with curved walls or bases to the container. 2. Apparatus according to claim 1 , wherein the tooth end face for at least one of the teeth is not aligned with the tooth end face for at least one of the other teeth when one the following apply:1) one or more tooth end faces are inclined at an angle relative to one or more another tooth end faces;2) one or more tooth end faces are inclined at an angle relative to a face of the base connector which connects two or more of the teeth together;3) one or more tooth end faces are inclined at an angle relative to one or more another tooth end faces and one or more tooth end faces are parallel to a face of the base connector which connects two or more of the teeth together;4) one or more tooth end faces are parallel to, but not coplanar with one or more another tooth end faces;5) one or more tooth faces are parallel to, but not coplanar with one or more another tooth end faces and are parallel to, but not coplanar with a face of the base connector.3. Apparatus according to claim 1 , wherein one or more or each of the tooth end faces have a tooth edge around that tooth end face claim 1 , the tooth edge is defined by the boundary between the tooth end face and the side surface or surfaces of the ...

IMPROVEMENTS IN AND RELATING TO STIRRING OF MOLTEN METALS IN COMPLEX STRUCTURES

Apparatus and methods for stirring a molten metal are provided. The apparatus comprising: two or more discrete units, each unit including a core (), the core () being provided with two or more teeth (), the core () being provided with at least one electrically conducting coils (); in use, mounting a first discrete unit in proximity to the container () at a first location; in use, mounting a second discrete unit in proximity to the container () at a second location; electrical connections between the two or more discrete units and a common control unit, thereby providing an electromagnetic stirrer. The apparatus format allows the discrete units to be position between different pairs of elements or parts of furnaces and the like to allow retrofitting of electromagnetic stirring where access is restricted. 1. Apparatus for stirring a molten metal in a container , the apparatus comprising:two or more discrete units, each unit including a core, the core being provided with two or more teeth, the core being provided with at least one electrically conducting coil;in use, mounting a first discrete unit in proximity to the container at a first location;in use, mounting a second discrete unit in proximity to the container at a second location;electrical connections between the two or more discrete units and a common control unit, thereby providing an electromagnetic stirrer.2. Apparatus according to claim 1 , wherein the two or more teeth have an end proximal the core and an end distal the core claim 1 , the end distal the core defines a tooth end face claim 1 , the tooth end face for at least one of the teeth not being aligned with the tooth end face for at least one of the other teeth.3. (canceled)4. Apparatus according to claim 1 , wherein the first location and second location are different in terms of being spaced along a wall or along the perimeter of the container.5. Apparatus according to claim 4 , wherein a part or element are interposed between the first discrete ...

IMPROVEMENTS IN AND RELATING TO MELTING AND/OR STIRRING OF MOLTEN METALS

A method and apparatus for moving molten material within a container are provided. The method comprising: providing apparatus including an electromagnetic mover adjacent a part of the container, wherein the electromagnetic mover has a primary motion axis, the primary motion axis being aligned along the direction of the maximum linear force generated by the electromagnetic stirrer; applying a current to the electromagnetic mover such that changes in magnetic field configuration cause movement of the molten metal within the container; wherein the primary motion axis is inclined relative to the vertical in two different planes; or wherein the longitudinal axis is inclined relative to the vertical in two different planes. The method and apparatus are designed to generate a plurality of different flow zones within the container and/or larger container, the different flow zones differing from one another in terms of their position in the container and/or larger container and/or the different flow zones differing from one another in terms of the relative flow velocities and/or the different flow zones differing from one another in terms of the relative directions of flow. 1. Apparatus for moving molten metal , the apparatus comprising:an electromagnetic mover;a mounting location for the electromagnetic mover; 'wherein the electromagnetic mover has a primary motion axis, the primary motion axis being aligned along the direction of the maximum linear force generated by the electromagnetic stirrer, and wherein the primary motion axis is inclined relative to the vertical in two different planes.', 'a support for the mounting location; and'}2. Apparatus according to claim 1 , wherein the primary motion axis corresponds to the primary axis along which molten metal moves claim 1 , and the primary motion axis is parallel to the longitudinal axis of the electromagnetic mover.3. (canceled)4. Apparatus according to claim 1 , wherein the primary motion axis is inclined relative to the ...

TECHNIQUES AND APPARATUS FOR ELECTROMAGNETICALLY STIRRING A MELT MATERIAL

Techniques and apparatus for electromagnetically stirring a melt material are disclosed. In accordance with some embodiments, the system may include a containment vessel within which a melt material may be disposed. The melt material may include, for example, an electrically conductive alloy, which optionally may be non-ferromagnetic and/or glass-forming. In its molten state, the melt material may have alternating current (AC) applied directly thereto while being immersed in a magnetic field, which may be static or dynamic, depending on the desired stirring effect. Application of the AC and magnetic field may continue as the melt material cools and solidifies, the sinusoidal nature of the AC and the Lorentz force of the magnetic field providing convective motion which tends to agitate the molten melt material in a manner which may realize an improvement in heat transfer and chemical homogeneity of the resultant cast solid. 1. A melt material processing system comprising:a containment vessel configured to contain a melt material comprising an electrically conductive alloy; be in direct physical contact with the melt material within the containment vessel; and', 'apply an alternating current (AC) directly to the melt material; and, 'at least one electrode configured toa magnetic field source configured to apply a magnetic field to the melt material within the containment vessel.2. The system of claim 1 , wherein the containment vessel includes at least one exterior channel configured to pass a coolant therethrough.3. The system of claim 1 , further comprising at least one electrically insulating layer disposed within the containment vessel claim 1 , over at least a portion of an interior surface of the containment vessel claim 1 , such that the at least one electrically insulating layer intervenes between the melt material and the interior surface of the containment vessel.4. The system of claim 3 , wherein the at least one electrically insulating layer is a coating ...

Method and apparatus for producing a semi-solid metal material

Provided is an apparatus for producing a semi-solid metal material by charging molten metal of a metal material into a slurry container, the apparatus including: an electromagnetic stirring device configured to apply a transverse circular flow to the molten metal in the slurry container by electromagnetic stirring; and a flow suppressing unit configured to suppress a flow of the molten metal by applying turbulence to the transverse circular flow of the molten metal under a state in which the flow suppressing unit is inserted into the molten metal from above the slurry container so as to cross the transverse circular flow of the molten metal.

MULTIPLE CHAMBER MATERIAL-STIRRING LANCE AND METHOD

A multiple chamber material-stirring lance and method used to treat molten metal in a ladle, the lance having a stirring gas chamber, and a plurality of gas permeable ports arranged at a terminal end of the gas chamber, and at least one material chamber positioned parallel to the gas chamber and terminating in a plurality of material ports. In use, the multiple chamber material-stirring lance is lowered into the ladle of molten metal, and gas and material are both introduced into a respective chamber and emitted through their respective ports. Stirring gas emitted through the gas permeable ports under a gas pressure between 40 and 600 cfm causes the stirring gas to create a boiling effect in the molten metal, drawing material into the stirring gas bubbles and away from the lance body, improving material dispersion efficiency and thus impurity extraction from the molten metal. 14026. A multiple chamber material-stirring lance () for use in a ladle () containing a quantity of hot metal () , the multiple chamber material-stirring lance comprising:{'b': '48', 'a gas chamber () having a first end and a terminal end, and a length between the first end and the terminal end;'}{'b': '44', 'a gas connection pipe () at the first end;'}{'b': 52', '48', '40, 'at least one lower port () formed into the length and leading out of the terminal end of the gas chamber () to an exterior of the multiple chamber material-stirring lance ();'}{'b': 43', '42', '60, 'a material chamber () having at a first end a material connection pipe () and at a second end terminating in at least one material discharge port (); and'}{'b': '46', 'a refractory coating () encasing both the gas chamber and the material chamber so as to form a single lance body;'}{'b': 43', '48, 'wherein the material chamber () is parallel to the gas chamber ();'}{'b': '52', 'wherein the lower ports () are gas permeable structures that restrict and regulate a flow of gas out of the gas chamber; and'}wherein the gas permeable ...

Ingot Casting

This specification discloses an open mould conveyer casting apparatus for forming a metal ingot including: a conveyer for conveying one or more ingot moulds from at least a first location where an ingot mould receives a molten metal having an exposed surface, to a second location where the molten metal has partially or completely solidified into a metal ingot; one or more magnetic field applicators configured to apply a varying magnetic field to the molten metal in the ingot mould between the first location and the second location, the magnetic field being of a magnetic field strength to induce stirring within the molten metal. This specification also discloses an open mould conveyer casting method for forming a metal ingot including: filling an ingot mould with a molten metal, the molten metal in the mould having an exposed surface; solidifying the molten metal to form the metal ingot; and applying a varying magnetic field to the molten metal of a magnetic field strength and frequency to induce stirring within the molten metal during the step of solidifying the molten metal. 1. An open mould casting method for forming a metal ingot including:filling an ingot mould with a molten metal, the molten metal in the mould having an exposed surface;solidifying the molten metal to form the metal ingot; andapplying a varying magnetic field to the molten metal of a magnetic field strength and frequency to induce stirring within the molten metal during the step of solidifying the molten metal.2. The method of claim 1 , wherein the varying magnetic field is an oscillating magnetic field having a frequency of from about 1 to about 100 Hz.3. The method of claim 2 , wherein the oscillating magnetic field has a frequency of from about 20 to about 30 Hz.4. The method of claim 1 , wherein the magnetic field is applied by one or more permanent magnets and/or one or more electromagnets at an offset distance of about 5 mm to about 30 mm above the exposed surface.5. The method of claim 4 ...

Scrap dipping device

Scrap Immersion Device

용광로 및 와류 스크랩 침지 웰을 포함하는 용융 금속 스크랩 침지 시스템와류 스크랩 침지 웰은 웰 위에 매달려 있고, 웰 내에서 순환하면서 용융 금속을 욕조에 담그도록 배향된 전환기를 포함한다. 시스템 또는 대안적인 스크랩 침지 시스템은 스크랩 침지 웰의 상부 개구와 관련하여 중첩하는 위치에 배치된 후드 요소를 포함할 수 있다. 후드는 적어도 실질적으로 상부 개구를 밀봉한다. 후드 요소는 스크랩 조각 공급 슈트 및 용융 스크랩 조각의 표면으로부터 증발된 증기를 함유하는 탄소가 연소하여 대부분 물을 생성하도록 하는 버너를 포함한다. 상기 시스템 또는 대안적인 스크랩 침지 시스템은 상기 램프에 인접에 인접하고 상기 램프 위에 있는 제1 직경 부분, 및 상기 제1 부분 위에 있는 제2의 더 큰 직경 부분을 갖는 웰의 내부 측벽을 포함할 수 있다. Molten Metal Scrap Immersion System Comprising a Blast Furnace and a Vortex Scrap Immersion Well A vortex scrap immersion well includes a diverter suspended above the well and oriented to circulate within the well to immerse molten metal in a bath. The system or alternative scrap immersion system may include a hood element disposed in an overlapping position with respect to the upper opening of the scrap immersion well. The hood seals at least substantially the upper opening. The hood element includes a scrap scrap feed chute and a burner that allows carbon containing vapors evaporated from the surface of the molten scrap scrap to burn to produce predominantly water. The system or alternative scrap immersion system may include an interior sidewall of the well having a first diameter portion proximate to and above the ramp, and a second larger diameter portion over the first portion. .

Machining with mechanical mixing of fused chromium-bearing iron

FIELD: process engineering. SUBSTANCE: invention relates to metallurgy and can be used at refining during mechanical mixing of chromium-bearing fused iron in container for refining. Said container features inner wall horizontal cross-section composed of blade mixer. The latter is composed by an integral part with axial rod coated with refractory material and revolving about horizontal axis of axial rod with vertical rotational axis. At mixing, regularly or irregularly, mixing mode is changed from concentric mixing of fused iron with centring over the container central axis of mixer rotational axis and eccentric mixing with decentring relative to container central axis. EFFECT: longer life. 12 cl, 1 tbl, 6 dwg РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 556 195 C2 (51) МПК C21C 1/02 (2006.01) C21C 7/064 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ (21)(22) Заявка: ИЗОБРЕТЕНИЯ К ПАТЕНТУ 2012133630/02, 08.12.2010 (24) Дата начала отсчета срока действия патента: 08.12.2010 Приоритет(ы): (30) Конвенционный приоритет: (72) Автор(ы): СУГИУРА,Масаюки (JP), МОРИ,Масакадзу (JP), ЙОСИНО,Такахиро (JP) 07.01.2010 JP 2010-002408 (43) Дата публикации заявки: 20.02.2014 Бюл. № 5 R U (73) Патентообладатель(и): НИССИН СТИЛ КО., ЛТД. (JP) (45) Опубликовано: 10.07.2015 Бюл. № 19 933719 A, 07.06.1982. SU 436091 А, 15.07.1974; . SU 865931 А, 23.09.1981. JP 2001-262212 A, 26.09.2001. (85) Дата начала рассмотрения заявки PCT на национальной фазе: 07.08.2012 2 5 5 6 1 9 5 (56) Список документов, цитированных в отчете о поиске: JP 2009-114506 A, 28.05.2009. SU 2 5 5 6 1 9 5 R U JP 2010/072051 (08.12.2010) C 2 C 2 (86) Заявка PCT: (87) Публикация заявки PCT: WO 2011/083655 (14.07.2011) Адрес для переписки: 129090, Москва, ул. Б.Спасская, 25, стр.3, ООО "Юридическая фирма Городисский и Партнеры", пат.пов. Ю.Д.Кузнецову, рег.N 595 (54) СПОСОБ ОБРАБОТКИ С МЕХАНИЧЕСКИМ ПЕРЕМЕШИВАНИЕМ ХРОМСОДЕРЖАЩЕГО РАСПЛАВЛЕННОГО ЖЕЛЕЗА (57) Реферат: Изобретение относится к области ...

渣滓管理系统和方法

一种渣滓处理组合件(14)，包括搅拌站(16)和挤压站(18)，在所述搅拌站(16)处对第一渣滓回收容器(27)中的渣滓进行搅拌，对所述第一渣滓回收容器中的渣滓进行搅拌的同时在所述挤压站(18)处对第二渣滓回收容器(27)中的由所述搅拌站之前搅拌过的渣滓进行挤压。搅拌站和挤压站可共同容纳在外壳(46)中。传送机系统(12)可以将多个渣滓回收容器推进通过所述渣滓处理组合件以进行连续渣滓处理。

Ultrasonic sensors with gas outlet holes for degassing of molten metals

FIELD: metallurgy. SUBSTANCE: invention relates to the field of metallurgy. Ultrasonic device for degassing of molten metal comprises ultrasonic transducer, at least one ultrasonic sensor connected to transducer, wherein said transducer comprises tip and at least two gas feed channels extending through said transducer and gas feed system including gas inlet, gas flow path via gas feed channels and gas outlets at or near the tip of the sensor. Method for reducing the amount of dissolved gas and/or impurities in a bath of a molten metal comprises placing an ultrasonic device in a bath of molten metal and introduction of blowdown gas into gas supply system and through channels of gas supply into bath of molten metal with speed for each ultrasonic sensor in range from 0.1 to 150 l/minute. EFFECT: invention can be used for treatment of molten bath during melting of alloys. 28 cl, 8 dwg, 3 tbl, 27 ex РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 696 163 C1 (51) МПК C22B 9/05 (2006.01) C22C 1/06 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (52) СПК C22B 9/05 (2013.01); C22C 1/06 (2013.01) (21)(22) Заявка: 2016122233, 17.11.2014 (24) Дата начала отсчета срока действия патента: (73) Патентообладатель(и): САУСВАЙР КОМПАНИ, ЭлЭлСи (US) Дата регистрации: 31.07.2019 Приоритет(ы): (30) Конвенционный приоритет: 18.11.2013 US 61/905,408 (45) Опубликовано: 31.07.2019 Бюл. № 22 (85) Дата начала рассмотрения заявки PCT на национальной фазе: 20.06.2016 (86) Заявка PCT: 2 6 9 6 1 6 3 R U (87) Публикация заявки PCT: WO 2015/073951 (21.05.2015) Адрес для переписки: 119019, Москва, Гоголевский б-р, 11, этаж 3, "Гоулингз Интернэшнл Инк.", Гизатуллина Евгения Михайловна (54) УЛЬТРАЗВУКОВЫЕ ДАТЧИКИ С ВЫПУСКНЫМИ ОТВЕРСТИЯМИ ДЛЯ ГАЗА ДЛЯ ДЕГАЗАЦИИ РАСПЛАВЛЕННЫХ МЕТАЛЛОВ (57) Реферат: Изобретение относится к области металлургии выпускные отверстия для газа на наконечнике и может быть использовано для обработки ванны датчика или вблизи него. Способ ...

Method and apparatus for melting material

一种机械铸造用铝水搅拌除气装置

本发明公开了一种机械铸造用铝水搅拌除气装置，包括熔铸炉和固定座，所述固定座固定于熔铸炉上端外壁的一侧，所述熔铸炉内插接有石墨连接杆，且石墨连接杆向外延伸端的外壁套接有支撑板，所述石墨连接杆的下端外壁螺纹连接有环形卡块，且环形卡块的外壁均匀环绕设置有若干组螺旋轴，所述石墨连接杆的内壁贯通有通气管，且通气管向底托内延伸端连通有若干个分流管，所述通气管远离分流管的一端内壁插接有进气管，所述支撑板的一端固定连接有活动块，所述活动块的中部插接有丝杆，且丝杆与活动块螺纹连接。本发明结构简单，易操作，能够对熔铸炉内的铝水进行充分搅拌，使得铝水得到净化，提高铸件的品质。

Способ вакуумного рафинирования металла и устройство для его осуществления

Сущность изобретения: над поверхностью расплава металла понижают давление смеси газов до создания парциальных давлений газов над расплавом ниже парциальных давлений газов в расплаве и производят обработку металла пульсациями давления с размахом 0,02 0,08 МПа в низкочастотном диапазоне 0,03 5 Гц и одновременно изменяют давление в диапазоне средних частот 55 195 Гц с размахом 0,005 0,01 МПа и в диапазоне высоких частот 350 3500 Гц с размахом 0,0001 0,001 МПа. Устройство для вакуумного рафинирования металла, осуществляющее указанный способ, содержит вакуум-плотную емкость, газоотводящий патрубок и эжектор, имеющий корпус, сопло и смесительный канал и установленный на газоотводящем патрубке, узел для создания низкочастотных пульсаций расхода газа через сопло эжектора, узел для создания пульсации средней частоты расхода газа, установленный на входе в газоотводящий патрубок и регулятор для создания высокочастотных пульсаций расхода газа, откачиваемого из емкости посредством изменения проходных сечений сопла и/или смесительного канала. Устройство, удобно и надежно в эксплуатации и обеспечивает требуемое качество металла. 2 с. и 4 з. п. ф-лы, 6 ил. 1 табл. БбУГЭУтОсС ПЧ Го РОССИЙСКОЕ АГЕНТСТВО ПО ПАТЕНТАМ И ТОВАРНЫМ ЗНАКАМ (19) ВИ "” 2046 149 ' (51) МПК 13) СЛ С 21С 7/10, С 22 В 9/04 12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ РОССИЙСКОЙ ФЕДЕРАЦИИ (21), (22) Заявка: 94000727102, 19.01.1994 (46) Дата публикации: 20.10.1995 (56) Ссылки: Каблуковский А.Ф. и др., Обзорная информация. М.: Черметинформация, 1985, с.14 - 16.Амеае "Рш5аНоп Гог гедисе4 соаЁ", уоигпа!| "гоп апа Зее \егпайопа!", 1984, ч.57, М№о.5, р.156 - 157. (71) Заявитель: Акционерное общество "Нижнетагильский металлургический комбинат", Межвузовский инженерный центр "Струйметтехнология" (72) Изобретатель: Комратов Ю.С., Киричков А.А., Новолодский В.П., Третьяков М.А., Бурлака Г.В., Спирин В.А., Фетисов А.А., Александров В.Б., Жигач С.И., Сизов А.М. ‚ Никольский В.Е., Каблука В.В., Савин А.В. (73) Патентообладатель: ...

Control method and system for metal melting and affinage

FIELD: metallurgy. SUBSTANCE: control method of melting process in electric arc furnace includes stages when weight of melted metal and weight of solid metal are calculated/determined at the given time moment. At that said calculation is based in input values of weights of melted and solid metals, arc power supplied to electric arc furnace, and temperature of melted and solid metal (100). Power of mixing is determined based on calculated/determined weights (200), and definite mixing power is supplied to the electromagnetic mixer (300). EFFECT: increased capacity and reduced wear of lining. 14 cl, 3 dwg РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 571 971 C2 (51) МПК C22B 9/00 (2006.01) F27B 3/28 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ (21)(22) Заявка: ИЗОБРЕТЕНИЯ К ПАТЕНТУ 2014113235/02, 07.04.2014 (24) Дата начала отсчета срока действия патента: 07.04.2014 Приоритет(ы): (30) Конвенционный приоритет: (43) Дата публикации заявки: 20.10.2015 Бюл. № 29 (73) Патентообладатель(и): АББ Текнолоджи Лтд (CH) R U 16.04.2013 EP 13163894.2 (72) Автор(ы): ЛУНДХ, Микаэль (SE), ЧЖАН, Сяоцзин (SE), ЭРИКССОН, Ян-Эрик (SE), ТЭН, Лидун (SE), ЛИНДБЕРГ, Карл-Фредрик (SE) (45) Опубликовано: 27.12.2015 Бюл. № 36 2 5 7 1 9 7 1 R U (54) СПОСОБ И СИСТЕМА УПРАВЛЕНИЯ ПРОЦЕССОМ ПЛАВЛЕНИЯ И РАФИНИРОВАНИЯ МЕТАЛЛА (57) Реферат: Изобретение относится к металлургии. значениях масс расплавленного и твердого Технический результат повышение металла, мощности дуги, подводимой к производительности и уменьшение износа электродуговой печи, и температурах футеровки. Способ управления процессом расплавленного и твердого металла (100). плавления в электродуговой печи включает в себя Определяют мощность перемешивания на этапы, на которых вычисляют/определяют массу основании вычисленных/определенных масс (200) расплавленного металла и массу твердого и подводят определенную мощность металла в заданный момент времени. Причем перемешивания к электромагнитной мешалке указанное ...

Induction crucible furnace with an assembled annular magnetic core

FIELD: metallurgy.SUBSTANCE: invention relates to metallurgy, in particular to an induction crucible furnace with an assembled annular magnetic core, which is intended for using in metallurgy and foundry production for the smelting of various alloys. Furnace comprises connected lined crucible, bottom, cooled inductor with electrically insulated windings and current lead, covering its outer vertical assembled magnetic core and frame with upper and lower plates fastened by ties. Wherein it is provided with a cylindrical shell placed between the crucible and the inductor, and said magnetic core is made in the form of an annular casing, wherein the shell and the magnetic core are placed between the plates to form a closed, sealed annular cavity for accommodating the inductor and the coolant, with the possibility of supply and discharge.EFFECT: invention provides significantly wider scope of use of said furnace by reducing the energy intensity of the smelting, reducing the operating costs and occupied area, increasing the inductor protection and furnace operation reliability.4 cl, 1 dwg РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 666 395 C2 (51) МПК F27B 14/06 (2006.01) F27D 11/12 (2006.01) F27D 27/00 (2010.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (52) СПК F27B 14/06 (2006.01); F27D 11/12 (2006.01); F27D 27/00 (2006.01) (21)(22) Заявка: 2016148352, 08.12.2016 (24) Дата начала отсчета срока действия патента: Дата регистрации: 07.09.2018 (43) Дата публикации заявки: 08.06.2018 Бюл. № (56) Список документов, цитированных в отчете о поиске: Современные плавильные 16 2 6 6 6 3 9 5 R U Адрес для переписки: 656038, Алтайский край, г. Барнаул, пр. Ленина, 46, ФГБОУ ВО "Алтайский государственный технический университет им. И.И. Ползунова" (АлтГТУ), отдел интеллектуальной и промышленной собственности (ОИПС) агрегаты: вагранки, газокислородные печи, элктродуговые и индукционные печи и устройства для внепечной обработки и разливки ...

Method for production of nitrogen-doped steel in bucket

FIELD: metallurgy. SUBSTANCE: invention relates to metallurgy, in particular to the production of steel with purging of the melt with nitrogen gas in a bucket. The method includes arc heating of the metal melt, purging the melt on the furnace-ladle unit through bottom purge plugs with argon, then purging the melt with nitrogen to its content exceeding the lower limit of the marking composition of steel by 30÷50%, and subsequent purging with argon. Before vacuuming the steel, the slag is loaded to a residual slag thickness of no more than 50 mm, vacuuming is carried out when the steel is purged in a bucket with nitrogen under deep vacuum at a pressure of no more than 2 mbar for at least 20 minutes until the oxygen content in the steel is no more than 20 ppm. After vacuuming, the deoxidizer is recoated in the form of a wire, followed by soft purging of the steel with argon with argon consumption, which excludes the exposure of the metal mirror from under the slag. EFFECT: invention makes it possible to increase the degree of saturation of steel with nitrogen, but no more than 500 ppm, reduce the content of non-metallic inclusions, oxygen and the maximum temperature of steel during processing, reduce the duration of out-of-furnace processing. 1 cl РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 754 337 C1 (51) МПК C21C 7/072 (2006.01) C22B 9/05 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (52) СПК C21C 7/072 (2021.02); C22B 9/05 (2021.02) (21)(22) Заявка: 2020136443, 06.11.2020 (24) Дата начала отсчета срока действия патента: Дата регистрации: Приоритет(ы): (22) Дата подачи заявки: 06.11.2020 (45) Опубликовано: 01.09.2021 Бюл. № 25 2 7 5 4 3 3 7 R U (54) Способ производства стали, легированной азотом в ковше (57) Реферат: Изобретение относится к металлургии, в вакуумом при давлении не более 2 mbar по частности к производству стали с продувкой меньшей мере в течение 20 минут до содержания расплава газообразным азотом в ...

Induction induction crucible furnace with ring stacked magnetic core

РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2016 148 352 A (51) МПК F27B 14/06 (2006.01) F27D 11/12 (2006.01) F27D 27/00 (2010.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ЗАЯВКА НА ИЗОБРЕТЕНИЕ (21)(22) Заявка: 2016148352, 08.12.2016 Приоритет(ы): (22) Дата подачи заявки: 08.12.2016 (43) Дата публикации заявки: 08.06.2018 Бюл. № 16 (72) Автор(ы): Левшин Геннадий Егорович (RU), Левшин Александр Геннадьевич (RU) A 2 0 1 6 1 4 8 3 5 2 R U Стр.: 1 A (57) Формула изобретения 1. Индукционная индукторная тигельная печь, содержащая скрепленные вместе каркас с верхней и нижней плитами, футерованный тигель, охлаждаемый индуктор с электроизолированными витками и токоподводом, наружный наборный магнитопровод, отличающаяся тем, что она дополнительно снабжена цилиндрической обечайкой, размещенной между тиглем и индуктором, магнитопровод выполнен в виде кольцевого кожуха, причем обечайка и магнитопровод расположены между плитами с образованием замкнутой кольцевой полости для размещения индуктора и хладагента. 2. Индукторная тигельная печь по п. 1, отличающаяся тем, что элементы наборного магнитопровода выполнены с возможностью полного или частичного охвата индуктора. 3. Индукторная тигельная печь по пп. 1, 2, отличающаяся тем, что обечайка выполнена с ребрами на ее внутренней поверхности, образующими углубления для размещения теплоизолирующего материала с теплопроводностью меньше, чем у футеровки. 4. Индукторная тигельная печь по пп. 1, 2, 3, отличающаяся тем, что обечайка выполнена из материала с высоким электрическим сопротивлением. 2 0 1 6 1 4 8 3 5 2 (54) Индукционная индукторная тигельная печь с кольцевым наборным магнитопроводом R U Адрес для переписки: 656038, Алтайский край, г. Барнаул, пр. Ленина, 46, ФГБОУ ВО "Алтайский государственный технический университет им. И.И. Ползунова" (АлтГТУ), отдел интеллектуальной и промышленной собственности (ОИПС) (71) Заявитель(и): федеральное государственное бюджетное образовательное учреждение высшего образования " ...

Induction crucible furnace with a wire inductor

FIELD: metallurgy.SUBSTANCE: invention relates to metallurgy and can be used for the smelting of various alloys, bringing the melt to the required properties and holding it for batch casting. Furnace contains connected framework with upper and lower plates, a lined crucible, a cooled inductor with electrically insulated windings and a current lead, an external assembled core. Between the crucible and the inductor there is a cylindrical shell. Core is made in the form of a hollow cylinder. Windings of the inductor are made of a single- or multiwire stranded conductor. Shell and magnetic core are placed between the plates to form a closed, sealed annular cavity for accommodating the inductor and the coolant.EFFECT: invention provides wider scope of use of induction smelting and crucible furnaces by reducing the energy intensity of smelting, reducing operating costs and occupied space, increasing the inductor protection and furnace operation reliability.9 cl, 2 dwg, 1 tbl РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 669 030 C2 (51) МПК F27B 14/06 (2006.01) F27D 11/12 (2006.01) F27D 27/00 (2010.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (52) СПК F27B 14/06 (2006.01); F27D 11/12 (2006.01); F27D 27/00 (2006.01) (21)(22) Заявка: 2016148354, 08.12.2016 (24) Дата начала отсчета срока действия патента: Дата регистрации: 05.10.2018 (43) Дата публикации заявки: 08.06.2018 Бюл. № (56) Список документов, цитированных в отчете о поиске: Современные плавильные 16 2 6 6 9 0 3 0 R U Адрес для переписки: 656038, Алтайский край, г. Барнаул, пр. Ленина, 46,ФГБОУ ВО "Алтайский государственный технический университет им. И.И. Ползунова" (АлтГТУ), отдел интеллектуальной и промышленной собственности (ОИПС) агрегаты: вагранки, газокислородные печи, электродуговые и индукционные печи и устройства для внепечной обработки и разливки металла. Сборник. Инженернотехнологический центр машиностроения "Металлург", 2-я ред. М., Металлургколсантинг, 2011, с ...

Apparatus and method for agitating, and melting furnace attached to agitation apparatus using agitation apparatus

본 발명에 따르면, 금속의 용탕을 교반하기 위한 교반장치는, 냉각을 위한 공기를 불어넣는 송풍용 개구 및 열교환이 완료된 공기를 배출시키기 위한 배기용 개구를 구비하는 내열용기; 및 영구자석에 의하여 구성되고, 이 내열용기의 내부에 회전가능하게 수납되며, 상기 영구자석으로부터의 자력선이 상기 내열용기를 관통하여 외부로 나오고, 그 후에 다시 상기 내열용기를 관통하여 상기 영구자석으로 되돌아가도록 구성된 회전자석체를 구비하여 구성된다. 교반장치, 송풍용 개구, 배기용 개구, 내열용기, 회전자석체. According to the present invention, a stirring device for agitating a molten metal of the metal, the heat-resistant container having a blower opening for blowing air for cooling and the exhaust opening for discharging the air heat exchange is completed; And a permanent magnet, which is rotatably housed in the heat resistant container, and a magnetic force line from the permanent magnet passes through the heat resistant container to the outside, and then passes through the heat resistant container to the permanent magnet again. And a rotating magnet configured to return. Stirring device, blowing opening, exhaust opening, heat resistant container, rotating magnet body.

Method and device for induction stirring of liquid metal

Изобретение относится к области металлургии, в частности к способу и устройству индукционного перемешивания жидкого металла в ванне печи отражательного типа под действием бегущего магнитного поля частотой 50-60 Гц. На жидкий металл действуют магнитным полем на высоте (0,1 - 0,5)Н от дна ванны печи, где Н - глубина ванны, скорость поступления струи в ванну и массовую подачу жидкого металла регулируют путем изменения напряжения на обмотке индуктора в пределах (0,5-1,1)Uном сети, жидкий металл в ванне перемешивают в пульсирующем режиме, чередуя периоды перемешивания паузами. Аппарат выполнен в виде модуля, в состав которого входит каркас с размещенным в нем блоком, вдоль продольной оси которого расположен проточный тракт, выполненный в виде камеры, ограниченной по длине торцевой стенкой блока. Индуктор расположен горизонтально под дном камеры, продольная ось камеры и ось индуктора находятся в одной вертикальной плоскости. Каркас имеет грузозахватные устройства для подъема и перемещения модуля, фланец и детали для крепления модуля на стенке ванны печи. Изобретение позволяет осуществлять струйное перемешивание жидкого металла в ванне печи, плавить дробленый скрап в струе перекачиваемого металла, очищать жидкий металл методом продувки газофлюсовой смесью, при этом продолжительность остановок печи для замены модуля сокращается по сравнению со стационарным электромагнитным полем до 50%. 2 н. и 9 з.п. ф-лы, 8 ил. РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) 2 443 961 (13) C2 (51) МПК F27D 27/00 (2010.01) B22D 1/00 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (21)(22) Заявка: 2008145585/02, 05.04.2007 (24) Дата начала отсчета срока действия патента: 05.04.2007 (73) Патентообладатель(и): СИА "ГОРС" (LV) R U Приоритет(ы): (30) Конвенционный приоритет: 19.04.2006 LV P-06-59 (72) Автор(ы): ИСИДОРОВ Эдуард (LV) (43) Дата публикации заявки: 27.05.2010 Бюл. № 15 2 4 4 3 9 6 1 (45) Опубликовано: 27.02.2012 Бюл. № 6 (56) Список документов, ...

Electromagnetic circulation device

Изобретение относится к области металлургии и может быть использовано для электромагнитного бесконтактного перемешивания расплавленного металла. Устройство содержит емкость для содержания электропроводящего материала в расплавленном состоянии, соленоид с внешней стороны емкости, создающий аксиально-распространяющееся бегущее магнитное поле для формирования магнитно-силовых линий в осевом направлении емкости в содержащемся в емкости электропроводящем материале в расплавленном состоянии, и магнитную пластину в форме полосы, расположенную между соленоидом и емкостью. Изобретение позволяет создать потоки в расплавленном металле, обеспечивающие одновременное выполнение осевого и кругового перемешивания только посредством соленоида, создающего аксиально-распространяющееся бегущее магнитное поле. 6 з.п. ф-лы, 6 ил. РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) 2 373 020 (13) C1 (51) МПК B22D 11/115 (2006.01) F27D 23/04 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ, ПАТЕНТАМ И ТОВАРНЫМ ЗНАКАМ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (21), (22) Заявка: 2008109005/02, 09.08.2006 (24) Дата начала отсчета срока действия патента: 09.08.2006 (72) Автор(ы): АРАСЕКИ Хидео (JP), КАСАХАРА Хирофуми (JP) R U (73) Патентообладатель(и): СЕНТРАЛ РИСЕРЧ ИНСТИТЬЮТ ОФ ЭЛЕКТРИК ПАУЭР ИНДАСТРИ (JP) (30) Конвенционный приоритет: 10.08.2005 JP 2005-232434 24.02.2006 JP 2006-048480 (45) Опубликовано: 20.11.2009 Бюл. № 32 2 3 7 3 0 2 0 (56) Список документов, цитированных в отчете о поиске: JP 2003-220323 А, 05.08.2003. JP 2000152600 A, 30.05.2000. SU 1703245 A1, 07.01.1992. SU 1683861 A1, 15.10.1991. SU 549242 A, 05.03.1977. JP 11-320054 A, 24.11.1999. 2 3 7 3 0 2 0 R U (86) Заявка PCT: JP 2006/315762 (09.08.2006) C 1 C 1 (85) Дата перевода заявки PCT на национальную фазу: 11.03.2008 (87) Публикация PCT: WO 2007/018241 (15.02.2007) Адрес для переписки: 129090, Москва, ул.Б.Спасская, 25, стр.3, ООО "Юридическая фирма Городисский и Партнеры", пат.пов. А.В.Мицу, рег.№ 364 (54) УСТРОЙСТВО ...

Device for refining liquid magnesium alloy by blowing

FIELD: metallurgy/chemistry. SUBSTANCE: invention relates to a melting furnace for refining a magnesium alloy. The furnace contains a crucible, an immersion tube with holes for supplying gases and a device for automatically regulating the supply of an inert gas or a gas mixture, while the immersion tube is made of low-alloy carbon steel and consists of a tubular working part, a tubular rod and a hose for connecting to a gas cylinder, when the tubular working part is made with a passage diameter of 15-25 mm and has a perforated end on the side not facing the crucible bottom, bent so that it can be placed in the working position parallel to the bottom of the melting furnace crucible, and the holes in the perforated end are made with a diameter of no more than 3 mm at a distance of 5-10 mm from each other, the tubular rod is made of a pipe with a diameter the same or close to the diameter of the working part and is connected to the working part by means of a valve to shut off the gas supply to the working part and to a hose for connecting to the gas cylinder by means of a device for automatic regulation of gas supply, made in the form of a union and a regulator with a rotameter for reducing and regulating the pressure of the gas entering the regulator from the cylinder, and automatically maintaining the gas flow at a constant level. EFFECT: increasing the degree of purification of magnesium melt from non-metallic inclusions and oxide films and simplifying the design of the furnace. 1 cl, 1 ex, 1 dwg РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 745 049 C1 (51) МПК C22B 9/05 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (52) СПК C22B 9/05 (2021.02) (21)(22) Заявка: 2020126310, 07.08.2020 (24) Дата начала отсчета срока действия патента: Дата регистрации: 18.03.2021 (73) Патентообладатель(и): Публичное акционерное общество "Авиационная корпорация "Рубин" (RU) (45) Опубликовано: 18.03.2021 Бюл. № 8 2 7 4 5 0 4 9 R U (56) ...

Method for operating life enhancement refractories impeller kanvara reactor

An operating method for extending service life of kanvara reactor impeller refractories is provided to reduce manufacturing costs of molten steel, reduce operation loads of operators, and improve productivity by adhering hot metal slag to the kanvara reactor impeller, thereby improving the service life of the kanvara reactor impeller. An operating method for extending service life of kanvara reactor impeller refractories comprises: a step(S12) of transmitting a lifting signal to a lifting motor such that a controller lifts an impeller when a hot metal ladle is loaded into a kanvara reactor; a step(S14) of allowing the controller to determine if the impeller has reached near a part of the hot metal ladle at which an upper cooling nozzle is installed; a step(S16) of stopping the impeller above the hot metal ladle and opening an automatic valve if the impeller has not reached near the part of the hot metal ladle at which the upper cooling nozzle is installed; a step(S18) of allowing the controller to open the automatic valve, thereby controlling a flow control valve to control a flow amount; a step(S20) of transmitting a signal for rotating an impeller motor when the flow control valve controls the flow amount; a step(S22) of allowing the controller to cool the impeller through a cooling gas supplied by the cooling nozzle; a step(S24) of transmitting a signal for allowing the controller to close an automatic valve by sensing that a temperature of the impeller is lowered to a predetermined temperature or less; a step(S26) of allowing the controller to stop the rotation of the impeller motor and order the descent of the lifting motor; and a step(S30) of performing an operation of excluding slag of the hot metal ladle when the impeller is deviated from the cooling position.

Method for extracting metal from metal-bearing slag and a device for extracting metal

FIELD: metallurgy. SUBSTANCE: present invention relates to a method for extracting metal from metal-bearing slag, in which the metal-bearing slag is heated with mixing in at least one reactor and in which the liquid slag in a reactor is periodically mixed by an appropriately directed magnetic field by switching on and off the magnetic field over the course of 5 seconds to 10 minutes. Reactor with mixing is a reduction furnace with a variable magnetic field, preferably a direct current electric furnace, most preferably a reactor in the form of a melting chute or ladle. Displayed here is a device for extracting metal from metal-bearing slag, including a reactor with mixing for heating the metal-bearing slag and an electromagnet to induce a magnetic field in such a way that liquid slag is mixed, wherein a switching device is provided for periodic operation of the electromagnet. EFFECT: higher degree of metal extraction from metal-bearing slag is provided. 14 cl, 4 dwg РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (51) МПК F27B 3/08 (11) (13) 2 605 028 C2 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ (21)(22) Заявка: ИЗОБРЕТЕНИЯ К ПАТЕНТУ 2014131278/02, 03.12.2012 (24) Дата начала отсчета срока действия патента: 03.12.2012 Приоритет(ы): (30) Конвенционный приоритет: (72) Автор(ы): КЕНИГ, Роланд (DE), ВЕЙЕР, Аксель (DE), ШМИДЛЬ, Юрген (DE), ЦЕРФОС, Йоханнес (DE) (43) Дата публикации заявки: 20.02.2016 Бюл. № 5 R U (73) Патентообладатель(и): СМС ЗИМАГ АГ (DE) 29.12.2011 DE 102011090072.1 (45) Опубликовано: 20.12.2016 Бюл. № 35 (85) Дата начала рассмотрения заявки PCT на национальной фазе: 29.07.2014 2 6 0 5 0 2 8 (56) Список документов, цитированных в отчете о поиске: WO 2006131372 А1, 14.12.2006;SU 1520109 А1, 07.11.1989; RU 2346221 C1, 10.02.2009;GB1245532 A, 08.09.1971;DE 102008058605 A1, 02.07.2009;RU 2371490 C1, 27.10.2009. EP 2012/074201 (03.12.2012) C 2 C 2 (86) Заявка PCT: (87) Публикация заявки PCT: R U 2 6 0 5 0 2 8 WO 2013/098044 (04.07.2013) ...

Induction crucible furnace with wire inductor

РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2016 148 354 A (51) МПК F27B 14/06 (2006.01) F27D 11/12 (2006.01) F27D 27/00 (2010.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ЗАЯВКА НА ИЗОБРЕТЕНИЕ (21)(22) Заявка: 2016148354, 08.12.2016 Приоритет(ы): (22) Дата подачи заявки: 08.12.2016 (43) Дата публикации заявки: 08.06.2018 Бюл. № 16 (72) Автор(ы): Левшин Геннадий Егорович (RU), Левшин Александр Геннадьевич (RU) Стр.: 1 A 2 0 1 6 1 4 8 3 5 4 R U A (57) Формула изобретения 1. Индукционная индукторная тигельная печь, содержащая скрепленные вместе каркас с верхней и нижней плитами, футерованный тигель, охлаждаемый индуктор с электроизолированными витками и токоподводом, наружный наборный магнитопровод, отличающаяся тем, что она дополнительно снабжена цилиндрической обечайкой, размещенной между тиглем и индуктором, наборный магнитопровод выполнен в виде полого цилиндра, витки индуктора выполнены из одно- или многопроволочного проводника, причем обечайка и магнитопровод расположены между плитами с образованием замкнутой кольцевой полости для размещения индуктора и хладагента. 2. Индукторная тигельная печь по п. 1, отличающаяся тем, что элементы наборного магнитопровода выполнены с возможностью полного или частичного охвата индуктора. 3. Индукторная тигельная печь по пп. 1, 2, отличающаяся тем, что наружный наборный магнитопровод снабжен дополнительно одним плоским кольцевым магнитопроводом, набранным из элементов в виде плоских разрезных или неразрезных кольцевых пластин, расположенным у его верхнего торца. 4. Индукторная тигельная печь по пп. 1-3, отличающаяся тем, что наружный наборный магнитопровод снабжен дополнительно плоским кольцевым магнитопроводом, набранным из элементов в виде плоских разрезных или неразрезных кольцевых пластин, расположенным у его нижнего торца. 5. Индукторная тигельная печь по пп. 1-4, отличающаяся тем, что обечайка выполнена с ребрами на ее внутренней поверхности, образующими углубления для размещения теплоизолирующего материала с ...

Furnace device for metal production process

FIELD: metallurgy.SUBSTANCE: invention relates to metallurgy and can be used for production of metals in a furnace unit. Furnace unit comprises an electric arc furnace, the configuration of which provides a soaking bath process and having a bottom, and a device for electromagnetic mixing, configuration of which provides its location below the bottom of the electric arc furnace with possibility of mixing molten metal in an electric arc furnace.EFFECT: invention ensures mixing of the whole melt bath without dead zone, and also prevents negative effect on fire-refractory lining without risk of breakthrough of molten metal and allows to perform metal smelting for a long period of time without maintenance.11 cl, 5 dwg РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 731 947 C1 (51) МПК F27B 3/08 (2006.01) F27D 27/00 (2010.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (52) СПК F27B 3/08 (2020.02); F27D 27/00 (2020.02) (21)(22) Заявка: 2019127045, 10.02.2017 (24) Дата начала отсчета срока действия патента: Дата регистрации: 09.09.2020 (45) Опубликовано: 09.09.2020 Бюл. № 25 (56) Список документов, цитированных в отчете о поиске: EP 2751510 A1, 09.07.2014. EP 2792755 A1, 22.10.2014. RU 126810 U1,10.04.2013. RU 124956 U1, 20.02.2013. RU 2572908 С2, 20.01.2016. (85) Дата начала рассмотрения заявки PCT на национальной фазе: 10.09.2019 (86) Заявка PCT: EP 2017/052941 (10.02.2017) 2 7 3 1 9 4 7 (73) Патентообладатель(и): АББ ШВАЙЦ АГ (CH), ТЕНОВА С.П.А. (IT) Приоритет(ы): (22) Дата подачи заявки: 10.02.2017 R U 10.02.2017 (72) Автор(ы): ТЭН, Лидун (SE), ЛЕМАН, Андерс (SE), ЯН, Хунлян (SE), ГРАССЕЛЛИ, Андреа (IT), РЕАЛИ, Сильвио, Мариа (IT) 2 7 3 1 9 4 7 R U WO 2018/145754 (16.08.2018) Адрес для переписки: 129090, Москва, ул. Б. Спасская, 25, стр. 3, ООО "Юридическая фирма Городисский и Партнеры" (54) ПЕЧНОЙ АГРЕГАТ ДЛЯ ПРОЦЕССА ПРОИЗВОДСТВА МЕТАЛЛОВ (57) Реферат: Изобретение относится к области металлургии перемешивания расплавленного ...

apparatus for separating a ferruginous ingredient of slag of electric furnace

본 발명은 전기로 슬래그의 함철성분 분리장치에 관한 것으로, 베이스플레이트(10)에 공압실린더(20)가 설치되고, 상기 공압실린더(20)의 실린더로드(21)에 회동아암(30)이 구비되며, 상기 회동아암(30)의 단부에 회전봉(40)이 설치되고, 상기 회전봉(40)의 단부에 팬(41)이 구비된다. 따라서, 상기 팬(41)을 슬래그포트(70)의 용융 슬래그 내부로 투입하고 회전시킴으로써 원심분리 작용에 의해 상대적으로 비중이 큰 함철성분을 슬래그포트(70)의 내벽쪽으로 이동시킨 뒤 가라앉힌다. 따라서, 슬래그 응고 후 순도 높은 지금을 다량 회수할 수 있으며, 이에 슬래그의 비중이 감소되어 재활용 용도가 다변화되는 효과가 있다.

Method of melting and reducing iron raw material containing iron oxide and electric furnace

이 전기로는, 1개 이상의 상부 전극과, 1개 이상의 저취 송풍구와, 임펠러를 구비하는 기계식 교반기와, 산화철 함유 철원료를 투입하는 투입 장치를 구비한다. This electric furnace includes at least one upper electrode, at least one low-odor tuyere, a mechanical stirrer having an impeller, and an input device for introducing an iron oxide-containing iron raw material.

Dregs management system and method

一种渣滓处理组合件(14)，包括搅拌站(16)和挤压站(18)，在所述搅拌站(16)处对第一渣滓回收容器(27)中的渣滓进行搅拌，对所述第一渣滓回收容器中的渣滓进行搅拌的同时在所述挤压站(18)处对第二渣滓回收容器(27)中的由所述搅拌站之前搅拌过的渣滓进行挤压。搅拌站和挤压站可共同容纳在外壳(46)中。传送机系统(12)可以将多个渣滓回收容器推进通过所述渣滓处理组合件以进行连续渣滓处理。

Methods for dissolving and reducing electric furnaces and iron oxide-containing iron raw materials