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RU2000118035A - METHOD FOR STARTING THE DIRECT Smelting Process - Google Patents

METHOD FOR STARTING THE DIRECT Smelting Process

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Publication number
RU2000118035A
RU2000118035A RU2000118035/02A RU2000118035A RU2000118035A RU 2000118035 A RU2000118035 A RU 2000118035A RU 2000118035/02 A RU2000118035/02 A RU 2000118035/02A RU 2000118035 A RU2000118035 A RU 2000118035A RU 2000118035 A RU2000118035 A RU 2000118035A
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RU
Russia
Prior art keywords
carbon
metal
paragraphs
loading
introducing
Prior art date
Application number
RU2000118035/02A
Other languages
Russian (ru)
Other versions
RU2242520C2 (en
Inventor
Сесл Питер БЭЙТС
Питер Дэмиан БЕРК
Original Assignee
Текнолоджикал Ресорсиз Пти. Лтд.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from AUPQ1522A external-priority patent/AUPQ152299A0/en
Application filed by Текнолоджикал Ресорсиз Пти. Лтд. filed Critical Текнолоджикал Ресорсиз Пти. Лтд.
Publication of RU2000118035A publication Critical patent/RU2000118035A/en
Application granted granted Critical
Publication of RU2242520C2 publication Critical patent/RU2242520C2/en

Links

Claims (23)

1. Способ запуска процесса прямой плавки для производства железа из металлосодержащего исходного материала в металлургической емкости, которая включает множество трубок/фурм для введения исходного материала, отличающийся тем, что предварительно нагревают емкость, загружают порции расплавленного железа в емкость с образованием жидкой ванны в емкости, загружают углеродсодержащий материал и флюс в жидкую ванну и вводят кислородсодержащий газ через одну или более трубок/фурм для введения исходного материала, сжигают углерод и образованный в ванне газ (если он имеется) и, таким образом осуществляют нагрев жидкой ванны при образовании шлака, и загружают металлосодержащий исходный материал в емкость при продолжении загрузки углеродсодержащего материала и флюса и введения кислородсодержащего газа, плавят металлосодержащий исходный материал с получением расплавленного железа.1. The method of starting the direct smelting process for the production of iron from a metal-containing source material in a metallurgical vessel, which includes many tubes / tuyeres for introducing the source material, characterized in that the vessel is preheated, portions of molten iron are loaded into the vessel to form a liquid bath in the vessel, load the carbon-containing material and flux into the liquid bath and introduce oxygen-containing gas through one or more tubes / tuyeres to introduce the source material, burn carbon and formed gas in the bath (if any), and thus heating the liquid bath during slag formation, and loading the metal-containing starting material into the vessel while continuing to load carbon-containing material and flux and introducing oxygen-containing gas, melted the metal-containing starting material to produce molten iron. 2. Способ по п. 1, отличающийся тем, что предварительный нагрев емкости включает сжигание топливного газа и воздуха в емкости. 2. The method according to p. 1, characterized in that the preliminary heating of the tank includes the combustion of fuel gas and air in the tank. 3. Способ по п. 1 или 2, отличающийся тем, что загрузку углеродсодержащего материала и/или флюса осуществляют путем введения исходного материала через одну или более трубок/фурм для введения исходного материала. 3. The method according to p. 1 or 2, characterized in that the loading of carbon-containing material and / or flux is carried out by introducing the source material through one or more tubes / tuyeres for introducing the source material. 4. Способ по любому из пп. 1-3, отличающийся тем, что загрузку металлосодержащего исходного материала осуществляют путем введения исходного материала через одну или более трубок/фурм для введения исходного материала. 4. The method according to any one of paragraphs. 1-3, characterized in that the loading of the metal-containing source material is carried out by introducing the source material through one or more tubes / tuyeres for introducing the source material. 5. Способ по п. 3 или 4, отличающийся тем, что вводят одно или более из следующего: углеродсодержащего материала, флюса и металлосодержащего исходного материала с газом-носителем через одну или более трубок/фурм для введения исходного материала. 5. The method according to p. 3 or 4, characterized in that one or more of the following is introduced: a carbon-containing material, a flux and a metal-containing starting material with a carrier gas through one or more tubes / tuyeres for introducing the starting material. 6. Способ по любому из пп. 1-5, отличающийся тем, что промежуточный между этапами загрузки расплавленного железа и углеродсодержащего материала и флюса этап введения кислородсодержащего газа осуществляют через одну или более трубок/фурм для введения исходного материала перед началом загрузки углеродсодержащего материала и флюса для того, чтобы сжечь окисляемый материал в жидкой ванне для повышения температуры ванны. 6. The method according to any one of paragraphs. 1-5, characterized in that the intermediate between the stages of loading the molten iron and carbon-containing material and flux, the stage of introducing oxygen-containing gas is carried out through one or more tubes / tuyeres for introducing the source material before loading the carbon-containing material and flux in order to burn the oxidizable material in liquid bath to increase the temperature of the bath. 7. Способ по любому из пп. 1-6, отличающийся тем, что загрузку металлосодержащего материала начинают после того, как рекомендуемые параметры процесса достигают заранее определенного порогового значения. 7. The method according to any one of paragraphs. 1-6, characterized in that the loading of the metal-containing material is started after the recommended process parameters reach a predetermined threshold value. 8. Способ по п. 7, отличающийся тем, что рекомендуемые параметры включают один или более из следующих параметров: температура жидкой ванны, концентрация углерода в жидкой ванне и уровень последующего сжигания. 8. The method according to p. 7, characterized in that the recommended parameters include one or more of the following parameters: temperature of the liquid bath, the concentration of carbon in the liquid bath and the level of subsequent combustion. 9. Способ по любому из пп. 1-8, отличающийся тем, что операции осуществляют в емкость с подом, а порции расплавленного железа загружают в емкость через накопитель. 9. The method according to any one of paragraphs. 1-8, characterized in that the operations are carried out in a container with a hearth, and portions of molten iron are loaded into the tank through the drive. 10. Способ по п. 9, отличающийся тем, что предварительный нагрев осуществляют при закрытом крышкой накопителе для снижения до минимума потери тепла в накопителе. 10. The method according to p. 9, characterized in that the preliminary heating is carried out with the lid of the drive closed to minimize heat loss in the drive. 11. Способ по любому из пп. 1-10, отличающийся тем, что очищают емкость перед предварительным нагревом для удаления остатков шлака из емкости. 11. The method according to any one of paragraphs. 1-10, characterized in that the tank is cleaned before pre-heating to remove residual slag from the tank. 12. Способ по пп. 1-11, отличающийся тем, что емкость содержит водоохлаждаемые панели, которые образуют, по меньшей мере, часть боковых стенок емкости, на которые наносят огнеупорную обмазку перед предварительным нагревом для снижения первоначальной потери тепла через панели во время запуска. 12. The method according to PP. 1-11, characterized in that the container contains water-cooled panels that form at least part of the side walls of the container, which are coated with a refractory coating before pre-heating to reduce the initial heat loss through the panels during startup. 13. Способ по любому из пп. 1-12, отличающийся тем, что загружаемое расплавленное железо содержит, по меньшей мере, 3 вес. % углерода. 13. The method according to any one of paragraphs. 1-12, characterized in that the loaded molten iron contains at least 3 weight. % carbon. 14. Способ по любому из пп. 1-13, отличающийся тем, что загружаемое расплавленное железо содержит кремний и/или алюминий и/или любой другой подобный подходящий окисляемый материал. 14. The method according to any one of paragraphs. 1-13, characterized in that the charged molten iron contains silicon and / or aluminum and / or any other similar suitable oxidizable material. 15. Способ по любому из пп. 1-14, отличающийся тем, что кислородсодержащий газ-носитель для ввода углеродсодержащего газа и флюса подводят под давлением, по меньшей мере, на 100 кПа выше давления в емкости. 15. The method according to any one of paragraphs. 1-14, characterized in that the oxygen-containing carrier gas for introducing carbon-containing gas and flux is supplied at a pressure of at least 100 kPa above the pressure in the tank. 16. Способ по любому из пп. 1-15, отличающийся тем, что скорость подачи кислородсодержащего газа повышают во время загрузки углеродсодержащего материала и флюса и металлосодержащего исходного материала. 16. The method according to any one of paragraphs. 1-15, characterized in that the supply rate of oxygen-containing gas is increased during the loading of carbon-containing material and flux and metal-containing starting material. 17. Способ по п. 16, отличающийся тем, что кислородсодержащий газ вводят со скоростью, по меньшей мере, 12.000 Нм3/ч во время загрузки металлосодержащего исходного материала.17. The method according to p. 16, characterized in that the oxygen-containing gas is introduced at a speed of at least 12.000 Nm 3 / h during loading of the metal-containing source material. 18. Способ по п. 16 или 17, отличающийся тем, что кислородсодержащий газ вводят со скоростью подачи, по меньшей мере, 20.000 Нм3/ч во время загрузки металлосодержащего исходного материала.18. The method according to p. 16 or 17, characterized in that the oxygen-containing gas is introduced at a feed rate of at least 20,000 Nm 3 / h during loading of the metal-containing source material. 19. Способ по любому из пп. 1-8, отличающийся тем, что определяют период времени загрузки углеродсодержащего материала путем отслеживания концентраций кислорода и/или моноксида углерода и/или диоксида углерода в отходящем газе, выпускаемом из емкости. 19. The method according to any one of paragraphs. 1-8, characterized in that determine the time period of loading of carbon-containing material by monitoring the concentrations of oxygen and / or carbon monoxide and / or carbon dioxide in the exhaust gas discharged from the tank. 20. Способ по любому из пп. 1-19, отличающийся тем, что повышают давление в емкости во время загрузки углеродсодержащего материала. 20. The method according to any one of paragraphs. 1-19, characterized in that they increase the pressure in the tank during the loading of carbon-containing material. 21. Способ по любому из пп. 1-20, отличающийся тем, что металлосодержащий исходный материал представляет собой смесь железной руды и металлосодержащего исходного материала с высокой степенью восстановления, причем при запуске уменьшают количество металлосодержащего исходного материала с высокой степенью восстановления, загружаемого в жидкую ванну в течение некоторого периода времени, заменяют металлосодержащий исходный материал с высокой степенью восстановления железной рудой и продолжают введение кислородсодержащего газа и достижение стабильных параметров процесса. 21. The method according to any one of paragraphs. 1-20, characterized in that the metal-containing starting material is a mixture of iron ore and a metal-containing starting material with a high degree of reduction, and at startup, the amount of a metal-containing starting material with a high degree of reduction loaded into a liquid bath is reduced over a period of time, metal-containing starting material is replaced source material with a high degree of reduction of iron ore and continue the introduction of oxygen-containing gas and the achievement of stable parameters process. 22. Способ по п. 21, отличающийся тем, что металлосодержащий исходный материал с высокой степенью восстановления имеет металлизацию, по меньшей мере, 60%. 22. The method according to p. 21, characterized in that the metal-containing source material with a high degree of reduction has a metallization of at least 60%. 23. Способ по п. 22, отличающийся тем, что металлосодержащий исходный материал с высокой степенью восстановления представляет собой железо прямого восстановления. 23. The method according to p. 22, characterized in that the metal-containing starting material with a high degree of reduction is direct reduced iron.
RU2000118035/02A 1999-07-09 2000-07-07 Method of starting up of a process of a direct melting RU2242520C2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AUPQ1522A AUPQ152299A0 (en) 1999-07-09 1999-07-09 Start-up procedure for direct smelting process
AUPQ1522 1999-07-09

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RU2000118035A true RU2000118035A (en) 2002-06-10
RU2242520C2 RU2242520C2 (en) 2004-12-20

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EP (1) EP1067201B1 (en)
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