WO1999025880A1 - Procede de production directe d'acier a partir de materiaux contenant du fer dans un convertisseur - Google Patents

Procede de production directe d'acier a partir de materiaux contenant du fer dans un convertisseur Download PDF

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Publication number
WO1999025880A1
WO1999025880A1 PCT/RU1998/000375 RU9800375W WO9925880A1 WO 1999025880 A1 WO1999025880 A1 WO 1999025880A1 RU 9800375 W RU9800375 W RU 9800375W WO 9925880 A1 WO9925880 A1 WO 9925880A1
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WO
WIPO (PCT)
Prior art keywords
iron
materials
mixture
carbon
slag
Prior art date
Application number
PCT/RU1998/000375
Other languages
English (en)
Russian (ru)
Inventor
Anatoly Lukich Nikolaev
Valery Venginovich Starikov
Evgeny Georgievich Poteshkin
Alexandr Anatolievich Nikolaev
Semen Moiseevich Abramovich
Evgeny Rudolfovich Braunshtein
Vladimir Alexeevich Berdyshev
Vladimir Ivanovich Lebedev
Evgeny Gennadievich Grigorkin
Andrei Georgievich Khaustov
Original Assignee
Anatoly Lukich Nikolaev
Valery Venginovich Starikov
Evgeny Georgievich Poteshkin
Alexandr Anatolievich Nikolaev
Semen Moiseevich Abramovich
Evgeny Rudolfovich Braunshtein
Vladimir Alexeevich Berdyshev
Vladimir Ivanovich Lebedev
Evgeny Gennadievich Grigorkin
Andrei Georgievich Khaustov
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
Application filed by Anatoly Lukich Nikolaev, Valery Venginovich Starikov, Evgeny Georgievich Poteshkin, Alexandr Anatolievich Nikolaev, Semen Moiseevich Abramovich, Evgeny Rudolfovich Braunshtein, Vladimir Alexeevich Berdyshev, Vladimir Ivanovich Lebedev, Evgeny Gennadievich Grigorkin, Andrei Georgievich Khaustov filed Critical Anatoly Lukich Nikolaev
Priority to AU15145/99A priority Critical patent/AU1514599A/en
Publication of WO1999025880A1 publication Critical patent/WO1999025880A1/fr

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B13/00—Making spongy iron or liquid steel, by direct processes
    • C21B13/0006—Making spongy iron or liquid steel, by direct processes obtaining iron or steel in a molten state
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
    • C21C5/28—Manufacture of steel in the converter

Definitions

  • the invention is related to black metal, and the name of the invention has ceased to exist in the circle.
  • the oxidizing agent is loaded by loading solid iron (sponge iron, iron ore) and fluxes with a single acid bath. With this, the carbon content in the bath is reduced. After oxidative oxidation, it emits slag, and after several cycles of accumulation of emissions 2
  • the process is operated by an acid-based unit.
  • Wastewater is a high waste of iron-containing, carbon-bearing materials, and the result is that there is a risk of inactivity .
  • Wastewater is a high waste of iron-containing, carbon-bearing materials, and the result is that there is a risk of inactivity .
  • a more common disadvantage is the frequent use of industrial and oxidative distillation vessels, which is a loss of industrial activity.
  • the technical result of the current invention is to reduce the specific cost of the used metal due to the reduction of the profit and loss of the black metal
  • the method of direct radiation is made of steel material in 3
  • the reactant is treated with the subsequent introduction into the alloy of a mixture of iron-containing, carbon-bearing and sludge-containing mixtures and other fumes.
  • the loading of a mixture of iron-containing, carbon-bearing and slag-forming materials is produced in bulk, and the mass of each product is of a mass of 10%.
  • the ratio of nitrogen and acid in the mixture is selected in the range from 4: 1 to 1: 1, respectively.
  • Partially partly delivered metal from the previous smelting makes up 10-30% of the mass of the melted alloy before it is released.
  • iron-containing material On the basis of iron-containing material, they use glass, iron ore, sinter, dust, sludge, sludge from steelmaking aggregates and T.
  • iron-containing material with a fraction of 0-1 mm. It is advisable to use carbon-friendly material with a fraction of 0-6 mm.
  • this alloy is blown with a mixture of nitrogen and oxygen in a ratio
  • the alloy is less than
  • P ⁇ evyshenie ⁇ ga 1400 ° C uvelichivae ⁇ s ⁇ s ⁇ ⁇ isleniya ugle ⁇ da and ve ⁇ ya ⁇ n ⁇ s ⁇ vyb ⁇ s ⁇ v me ⁇ alla and shla ⁇ a, snizhae ⁇ d ⁇ lyu ugle ⁇ da, ⁇ islyayuscheg ⁇ d ⁇ C0 2 ch ⁇ umenynae ⁇ s ⁇ e ⁇ en is ⁇ lz ⁇ vaniya ⁇ imiches ⁇ g ⁇ ⁇ e ⁇ la ⁇ ea ⁇ tsy ⁇ isleniya ugle ⁇ da and uvelichivae ⁇ ⁇ as ⁇ d ugle ⁇ ds ⁇ de ⁇ zhascheg ⁇ ma ⁇ e ⁇ iala.
  • Waste materials are fed into the bath with a metal fusion, when they simultaneously blow the injection mixture from nitrogen and acid. With this, intensive agitation is ensured. 7
  • the carbon from the iron-containing alloy and the carbon-bearing material are oxidized to S ⁇ and S ⁇ g.
  • the relationship between them depends on the temperature and the level of oxidation of the slag.
  • Carbon monoxide emitted from the alloy is oxidized to carbon dioxide inside and / or above liquid-solid materials and heats them.
  • C ⁇ is converted to C0 2
  • about 2/3 of the heat is distinguished, which is released by the complete oxidation of carbon.
  • C ⁇ by passing through liquid-solid materials, mixes the baths, restores iron oxides and increases the mass of the iron-carbon alloy.
  • the ratio of the amounts of C0 and C0 2 depends on the ratio of the nitrogen and oxygen in the mixture and the iron and carbon-containing materials. With the proposed process, the content of iron and carbon materials is supported at the level— 9
  • the specific consumption of the used materials depends on the optimal separation of the restored iron between the metal and slag.
  • the optimum separation between the alloy and slag is the content of iron oxides in the removed slag.
  • the content of iron oxides in a slag of less than 5% indicates more earlier assimilation of iron-containing 10
  • composition of iron oxides in a slag of more than 30% yields to significant amounts of iron with removable sludge in the form of oxides and metal sulfates, to reduce the degree of iron extraction and to increase the increase Elevated processes with metal metals are associated with the energetic interaction of the metal and the oxidized slag at the time of removal of the last.
  • slag with the necessary physical and chemical properties is subject to the addition of a slag-forming material, for example, notify. This ensures the formation of slag, which has a low melting point, low viscosity and, consequently, a good removal from the unit.
  • the concentration of the mixture of nitrogen and oxygen is reduced to that of the concentration of They are carried out after assimilation of the loaded into the aggregate of iron-containing, carbon-bearing and slag-containing eleven
  • An example of a process of the Sprint 160th and the ternary unit is 45t of the metal from the previous melting of the following chemical composition, weight%: 0.1 C; 0.08 ⁇ ; 0.010 ⁇ with a temperature of 1610 ° ⁇ , which is 80 ° ⁇ higher than its melting temperature.
  • active carbon-containing alloy it is possible to restore a significant amount of iron oxides in the metal bath, they give 2.3 antifreeze.
  • the result of carburizing is that they produce iron-carbon alloy with a carbon content of 3.6%> and a temperature of 1360 ° C and a temperature of 150 ° C.
  • the metal bath prepared by such a method is especially loaded with iron (agglomerate), carbon (antitrust) and it is pollutant (non-ferrous).
  • iron agglomerate
  • carbon antitrust
  • pollutant non-ferrous
  • metal alloy for the loading of each part, its components, as well as the time intervals between the downloads are given in table. 1 .
  • composition of slag to be removed weight%> 8X2 30-34
  • the obtained iron-carbonaceous alloy is blown for 13 minutes. acid with a consumption of 800 m / min. and an intensity of 5.3 m / min. after the water is fully cooled. At the same time, at the beginning of blowing, they deliver 8.0 tons of lime. ⁇ workout ⁇ The result of this is the steel of the following chemical composition, weight%: 0.08
  • the total duration of the floats is 120 minutes.
  • the mass of each product is widespread, the intervals between the downloads of the products, the mass of the metal are dependent on the load of the mass,

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Carbon Steel Or Casting Steel Manufacturing (AREA)
  • Manufacture And Refinement Of Metals (AREA)

Abstract

Cette invention concerne essentiellement un procédé de production directe d'acier à partir de matériaux contenant du fer dans un convertisseur. Ce procédé consiste à effectuer successivement des processus de désoxydation et d'oxydation, ainsi qu'à éliminer périodiquement la calamine et à produire le métal. Le processus de désoxydation consiste à carburer partiellement le métal restant d'une coulée précédente, à introduire dans cette coulée un mélange de matériaux contenant du fer et du carbone et de matériaux formateurs de calamine, et à injecter dans la coulée un mélange d'azote et d'oxygène. Le processus d'oxydation consiste quant à lui à ajouter des matériaux formateurs de calamine et injecter de l'oxygène dans la coulée. L'addition du mélange de matériaux contenant du fer et du carbone et de matériaux formateurs de calamine se fait par portions, la masse de chaque portion représentant de 10 à 40 % de la masse de la coulée. La quantité de matériaux contenant du carbone dans le mélange représente de 25 à 50 % de la quantité de matériaux contenant du fer. Le rapport entre l'azote et l'oxygène dans le mélange varie de 4: 1 à 1: 1, respectivement. L'élimination périodique de la calamine se fait lors de la récupération des matériaux ajoutés et lorsque le contenu de la calamine en oxydes de fer varie de 5 à 30 %. Ce procédé permet de réduire la consommation spécifique en matériaux utilisés grâce à la réduction des pertes en métal et à une organisation plus rationnelle du processus, ce qui permet d'accroître la production finale.
PCT/RU1998/000375 1997-11-13 1998-11-12 Procede de production directe d'acier a partir de materiaux contenant du fer dans un convertisseur WO1999025880A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU15145/99A AU1514599A (en) 1997-11-13 1998-11-12 Method for the direct production of steel from iron-containing materials in a converter

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
RU97118338A RU2115743C1 (ru) 1997-11-13 1997-11-13 Способ прямого получения стали из железосодержащих материалов в конвертере
RU97118338 1997-11-13

Publications (1)

Publication Number Publication Date
WO1999025880A1 true WO1999025880A1 (fr) 1999-05-27

Family

ID=20198728

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/RU1998/000375 WO1999025880A1 (fr) 1997-11-13 1998-11-12 Procede de production directe d'acier a partir de materiaux contenant du fer dans un convertisseur

Country Status (3)

Country Link
AU (1) AU1514599A (fr)
RU (1) RU2115743C1 (fr)
WO (1) WO1999025880A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0318896A2 (fr) * 1987-11-30 1989-06-07 Nkk Corporation Procédé et dispositif pour la réduction en bain de fusion de minerais de fer
EP0320990A2 (fr) * 1987-12-17 1989-06-21 Polaroid Corporation Lasers et amplificateurs à fibre optique
SU1706216A1 (ru) * 1985-11-10 1996-04-20 Московский институт стали и сплавов Способ плавки окисленного сырья черных металлов в печи с жидкой ванной

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU1706216A1 (ru) * 1985-11-10 1996-04-20 Московский институт стали и сплавов Способ плавки окисленного сырья черных металлов в печи с жидкой ванной
EP0318896A2 (fr) * 1987-11-30 1989-06-07 Nkk Corporation Procédé et dispositif pour la réduction en bain de fusion de minerais de fer
EP0320990A2 (fr) * 1987-12-17 1989-06-21 Polaroid Corporation Lasers et amplificateurs à fibre optique

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
REFERATWNY ZHURNAL, "Metallurgya", Serya "Proizvodstvo Chuguna i Stali", Moscow, VINITI, 1990, No. 7, Abstract 7B135, "Pazrabotka Protessa Pryamogo Poluchenya Stali IMIS". *

Also Published As

Publication number Publication date
RU2115743C1 (ru) 1998-07-20
AU1514599A (en) 1999-06-07

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