[go: up one dir, main page]

WO2011027334A1 - Procédé de traitement de scories de la métallurgie - Google Patents

Procédé de traitement de scories de la métallurgie Download PDF

Info

Publication number
WO2011027334A1
WO2011027334A1 PCT/IB2010/054008 IB2010054008W WO2011027334A1 WO 2011027334 A1 WO2011027334 A1 WO 2011027334A1 IB 2010054008 W IB2010054008 W IB 2010054008W WO 2011027334 A1 WO2011027334 A1 WO 2011027334A1
Authority
WO
WIPO (PCT)
Prior art keywords
metal
slag
reductant
manganese
molten
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/IB2010/054008
Other languages
English (en)
Inventor
Anton Mecchi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to AU2010290830A priority Critical patent/AU2010290830A1/en
Publication of WO2011027334A1 publication Critical patent/WO2011027334A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B7/00—Working up raw materials other than ores, e.g. scrap, to produce non-ferrous metals and compounds thereof; Methods of a general interest or applied to the winning of more than two metals
    • C22B7/04—Working-up slag
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B3/00—General features in the manufacture of pig-iron
    • C21B3/04—Recovery of by-products, e.g. slag
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B47/00—Obtaining manganese
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B5/00—General methods of reducing to metals
    • C22B5/02—Dry methods smelting of sulfides or formation of mattes
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B5/00—General methods of reducing to metals
    • C22B5/02—Dry methods smelting of sulfides or formation of mattes
    • C22B5/04—Dry methods smelting of sulfides or formation of mattes by aluminium, other metals or silicon
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B5/00—General methods of reducing to metals
    • C22B5/02—Dry methods smelting of sulfides or formation of mattes
    • C22B5/06—Dry methods smelting of sulfides or formation of mattes by carbides or the like
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/20—Recycling
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/50—Reuse, recycling or recovery technologies

Definitions

  • THIS INVENTION relates to processing of metallurgical slag. More particularly, the invention relates to a method of processing metallurgical slag containing at least one desired metal slag compound and further relates to a metallurgical feedstock for processing. The invention extends to a molten metal product and a valuable by-product produced in accordance with the method of the invention.
  • oxides of metal alloy components for example manganese (IV) dioxide (Mn0 2 ) and iron (III) oxide (Fe 2 0 3 ), are reduced in the presence of a suitable reductant, such as carbon, to metals, thereby to produce a metal alloy product comprising the metals, such as ferromanganese (FeMn).
  • a suitable reductant such as carbon
  • Metallurgical slags containing non-reduced metal oxides and other impurities are produced in addition to the alloy product. In many cases, such non-reduced metal oxides contained in the slags include desired metal oxides, useful for alloying.
  • a slag is produced which typically has a relatively high manganese (Mn) content, usually in the form of manganese (II) oxide (MnO).
  • MnO manganese oxide
  • II manganese oxide
  • the further processing of such slags to reduce the desired metal compounds and obtain a metal alloy product is not generally considered to be economically viable.
  • Producing a metal alloy product from such slags is further hampered by the presence of impurities, in particular large amounts of silica (Si0 2 ), contained in the slag.
  • Silica presents a problem as, during reduction of a desired metal oxide in the slag, large amounts of silicon (Si) are formed due to simultaneous reduction of the silicon ion in the silica. This leads to an alloy product produced from the slag containing unacceptably high levels of Si.
  • the reduction of silica to silicon can be counteracted by the addition of a calcium-containing fluxing agent, but this solution is not economically attractive, since large quantities of fluxing agent are required and addition of such large quantities of fluxing agent reduces the overall throughput of the system, thus also reducing metal alloy yield.
  • reaction mixture admixing the slag with a reductant and a preferred metal ore to obtain a reaction mixture
  • the phrase "desired metal slag compound” is to be understood to refer to a compound contained in the metallurgical slag which contains a metal which is desired to be included in the molten metal product.
  • “preferred metal ore” is to be understood to refer to an ore of a metal which metal is preferred also to be included in the molten metal product. It will therefore be appreciated that the adjectives "desired” and “preferred” are employed in qualifying the respective metals and the desirability of including these metals in the molten metal product.
  • the desired metal and the preferred metal may be the same metal.
  • the desired metal and the preferred metal may be manganese.
  • the desired metal slag compound may comprise a desired metal oxide.
  • the desired metal slag compound may be manganese (II) oxide (MnO).
  • the preferred metal may be expressed in the preferred metal ore in the form of a preferred metal compound.
  • the preferred metal compound may comprise a preferred metal oxide.
  • the ore may be a Mn-containing ore and the preferred metal oxide may be manganese (II) oxide.
  • the ore may comprise 10%-50%, by mass, of the reaction mixture. Typically, the ore comprises 15%-40%, by mass, of the reaction mixture.
  • Some of at least one of the desired metal and the preferred metal may be present in the reaction mixture in a native metallic form, the metals simply being melted in the heating step and being included in the molten metal product.
  • the method may include admixing a metal alloying component comprising at least one additional metal, other than the desired metal and the preferred metal, with the reaction mixture.
  • the additional metal may be at least partly contained in at least one of the metallurgical slag and the preferred metal ore.
  • the additional metal may be at least partly in native metallic form.
  • the additional metal may be at least partly expressed as an additional metal compound.
  • the additional metal compound is in the form of an additional metal oxide.
  • the additional metal is iron and the additional metal compound comprises iron (III) oxide (Fe 2 0 3 ).
  • metal fines such as Fe fines when the additional metal is iron and the alloy is a ferro-manganese alloy, may thus be employed in addition to or instead of additional metal-containing slags, e.g. iron-containing BOF slags.
  • the additional metal compound when present, may also be reduced by the reductant in the heating step and may therefore contribute the additional metal to the molten metal product.
  • the molten metal product will thus be in the form of an alloy, comprising a molten mixture of at least the desired metal and the additional metal.
  • the alloy will thus be a ferro-manganese (FeMn) alloy, such as high carbon ferro-manganese (HCFeMn), medium carbon ferro-manganese (MCFeMn) or low carbon ferro-manganese (LCFeMn).
  • Metals other than the desired metal and the additional metal may be present in at least one of the ore and the slag. At least some of the other metals may be expressed as metal compounds capable of being reduced by the reductant. Typically, such other metal compounds comprise metal oxides, metal silicates, and mixtures thereof. Typically, such other compounds include silica (Si0 2 ), which may typically be present in the slag. At least some of the silica will therefore be reduced by the reductant in the heating step to form silicon (Si), which is incorporated in the molten metal product.
  • Si silicon
  • other metals referred to above can also be present in the slag in a native, metallic form. Thus, these metals will also be melted in the heating step and be included in the molten metal product.
  • the reductant, the metal ore, and at least a part of the slag may be in solid form when being admixed to form the reaction mixture.
  • the slag may be in molten form when being admixed, typically being at a temperature of 1 100 ⁇ O-1650°C, e.g. 1200 ⁇ ⁇ -1550 °C.
  • This may be the case when raw slag is available in solid form, such as from a tip or dump located near a metallurgical furnace which produces raw slag in molten form with the slag thus readily being available in both solid and molten form.
  • an energy reduction in the heating step may be achieved. It is expected that this reduction may be up to 35% or more of the heat energy which would be required in the absence of molten slag.
  • the method may include, prior to the admixing step, comminuting at least one of the slag, the reductant and the metal ore in solid form to obtain comminuted material.
  • the comminuted material may be subjected, prior to the admixing step, to size classification to obtain a size fraction thereof having an average particle size of at most about 50mm. It will be appreciated that the obtained size fraction will then be admixed with the reductant to obtain the reaction mixture.
  • the comminution of the raw slag, prior to admixing thereof with the reductant may, for example, be by crushing, to cause the size reduction thereof.
  • the reaction mixture may be heated in the heating step to a temperature from about 1350 ⁇ to about ⁇ ⁇ ' ⁇ .
  • heating the reaction mixture is selected from being conducted on a continuous basis by means of an induction furnace or on a batch wise basis by means of an arc furnace.
  • the arc furnace may be a submerged arc furnace or, more preferably, may be an open arc furnace. It is expected that an open arc furnace would be employed particularly when the reduction rate is to be retarded so as to ensure that the processed slag contains not more than 6% by mass MnO. Notwithstanding the nature of the furnace used and the nature of the operation allowed by the furnace, i.e. continuous or batch wise, the other steps of the method may be conducted more-or-less continuous or batch wise, as desired.
  • the slag may be selected from metallurgical furnace slags obtained from one or more metallurgical furnaces used for metal, typically alloy production.
  • the slag may typically be selected from manganese-containing slags, iron-containing slags, ferromanganese slags and mixtures thereof.
  • Such slags may include not only basic oxygen furnace (BOF) slags or arc furnace (AF) slags obtained during steel production, but importantly also include slags obtained from furnaces used in the production of other metals, which may comprise alloys such as ferro-manganese alloys.
  • Such slags may typically be toxic.
  • the slags may be obtained from metal producers located off-site, or, optionally, after production may be used immediately on-site in molten form or, after solidification by air cooling thereof by natural convection on-site, may be stockpiled.
  • a stockpile of raw slag may be provided from which raw slag to be processed in accordance with the method of the invention, may be withdrawn, continuously or batch wise, as desired, for further processing in accordance with the method of the invention.
  • the raw slag may comprise a mixture of at least one manganese-containing slag and at least one iron-containing slag, such as a BOF slag, so that the metal product comprises a ferro-manganese alloy.
  • the slag is a ferro-manganese slag, containing manganese and iron, typically in the forms of MnO and Fe 2 0 3 , originating from a ferro-manganese alloy production operation.
  • the slag may, of course, also be a mixture of a ferro-manganese slag and one or more manganese-containing and/or iron-containing slag.
  • the manganese-containing slags may typically be obtained from ferro-manganese production, the manganese being in the form of MnO.
  • the manganese-containing slag may comprise, by mass, 15%-30% manganese, expressed as MnO.
  • the iron-containing slag may be a slag obtained from a BOF steel production process.
  • the iron-containing slag may typically comprise, by mass, 25%-50% iron, expressed as Fe 2 0 3 .
  • the reductant may be solid and may be any or more of a silicon-containing reductant, and an aluminium-containing reductant, a ferrosilicon-containing reductant, and a carbon-containing reductant.
  • the reductant is a carbon-containing reductant and is selected from coal and anthracite.
  • Carbon-containing reductants, such as coal are preferred by virtue of their ready availability at low cost and can be contrasted with aluminium-containing or ferrosilicon-containing reductants which, in certain circumstances, can be regarded as contaminants.
  • the quality of carbon reductant employed will, of course, depend on the quality of pure carbon present in the reductant. For example, a typical coal reductant with an average carbon content of 50% by mass for manufacturing HCFeMn alloy will typically comprise about 10% by mass of total reaction mixture feed. It will, however, be appreciated that this quantity will vary from case to case.
  • the method includes admixing a calcium-containing fluxing agent with the reaction mixture, such as lime (CaO), typically in the form of limestone (CaC0 3 ).
  • a calcium-containing fluxing agent such as lime (CaO), typically in the form of limestone (CaC0 3 ).
  • the addition of the calcium-containing fluxing agent may be used to optimize the basicity of the reaction mixture, expressed in a CaO:Si0 2 mass ratio, thereby to limit the formation of silicon and the inclusion thereof in the metal product.
  • the composition of the reaction mixture may be selected to produce a molten metal product, in the form of an alloy, having, by mass, a silicon content of between 0.4 % and 0.9%, typically 0.5 - 0.7 %.
  • the composition of the reaction mixture will typically be selected is such that the alloy has a manganese content of 70% to 90%, by mass, preferably 76% to 80%, and an iron content of 5% to 20% by mass, preferably 6% to 15%.
  • the composition of the reaction mixture may further be selected such that its basicity, expressed as CaO+MgO/Si0 2 by mass, is in the region of 1 .3 to 1 .5 with the final basicity of the slag after reduction, measured as CaO/Si02 by mass, being between 1 and 1 .25.
  • Separating the molten metal product, or alloy, from the molten processed slag may be by way of gravity separation.
  • the molten metal product typically has a higher density than the molten processed slag, and therefore the molten processed slag will typically float as a layer on the molten metal product.
  • the separation may thus, for example, take place in the furnace itself, or in another vessel, such as a tilting crucible, which may have a tapping opening at a low level.
  • the molten metal product can then be tapped from the vessel at the low level and the molten processed slag can be poured or decanted, e.g. as an overflow from the vessel at a high level, by tilting the vessel. Instead, the slag can be decanted first, followed by decanting of the metal product.
  • the separation of the processed slag and the metal product, both in molten form, from each other, has a major advantage in that the molten metal product can be obtained in relatively slag-free form, uncontaminated by the processed slag.
  • the gravity separation made possible by this feature of the method of the invention furthermore lends itself to a variety of different separation methods, such as tapping, decanting, pouring, etc, and thus adds versatility to the method of the invention.
  • electrically powered furnaces such as induction or arc furnaces, facilitates keeping the slag and the metal product at a temperature at which they are molten at all times, after the reduction has taken place and until they are separated. It is to be emphasised that, regardless of the reaction temperatures employed, the heating should act at all times to keep the metal product and the processed slag molten, at least until they have been separated from each other.
  • the method may further include subjecting the molten processed slag, when separated from the molten metal product, to downstream processing to obtain therefrom a valuable by-product.
  • the method may include allowing the molten processed slag to solidify to air-cooling, subjecting the solidified processed slag to comminution to achieve size reduction thereof and rendering the slag in the form of an aggregate, with the aggregate being the valuable by-product.
  • the method may include causing the molten processed slag to solidify by contacting it with liquid water to cause granulation of the processed slag and obtain a granulated processed slag, with the granulated processed slag then being the valuable by-product.
  • the method may include dewatering the granulated processed slag.
  • the granulated processed slag may further be comminuted, for example by crushing and/or milling, for example by milling during or after the dewatering thereof.
  • the comminuted dewatered processed slag may then be stockpiled before use or before onward sale to users, or may be immediately on site for the manufacture of end product.
  • the granulated processed slag is useful as an extender.
  • the processed air-cooled slag product in aggregate form will usually be regarded as a final product for sale on to users thereof in the construction or building industry
  • the granulated processed slag product can be regarded as an intermediate product which can be stockpiled for further processing later, or can be sold on, for use as an extender or filler, to manufacturers of, for example, bricks, ready-mix concretes, slag-extended blended cements, or the like, after grinding or milling, if necessary, to a sufficiently small particle size.
  • the granulated processed slag intermediate product may be processed further to produce a more or less final processed slag product.
  • the invention also extends to a molten metal product and to a valuable processed slag product, when produced in accordance with the method of the invention as described and defined above.
  • a metallurgical feedstock for processing comprising a mixture of
  • the desired metal and the preferred metal may be as hereinbefore described.
  • the desired metal and the preferred metal may be the same metal, typically manganese.
  • the desired metal slag compound may at least partly comprise a desired metal oxide.
  • the desired metal oxide may typically be manganese (II) oxide.
  • the preferred metal may be expressed at least partly in the preferred metal ore in the form of a preferred metal compound, typically a preferred metal oxide.
  • a preferred metal compound typically a preferred metal oxide.
  • the desired metal oxide may typically be manganese (II) oxide.
  • the metallurgical slag may be as hereinbefore described and may be selected from manganese-containing slags, iron-containing slags, ferro-manganese containing slags and mixtures thereof.
  • the reductant may also be as hereinbefore described and may comprise a reductant for reducing the desired metal compound, preferably a carbon-containing reductant.
  • the preferred metal ore may be as hereinbefore described and may comprise 10% to 50%, more particularly 15% to 40%, by mass, of the feedstock.
  • the feedstock may include a metal alloying component containing an additional metal to the desired metal and the preferred metal.
  • the metal alloying component and the additional metal may be as hereinbefore described.
  • the additional metal is iron.
  • the reductant, the ore and at least a part of the metallurgical slag may be in solid form. It is expected that the metallurgical slag may, however, be at least partly in molten form.
  • the model involved preparing mass and energy balances for the heating step of the invention, i.e. for the various reduction reactions taking place in the heating step, for various scenarios of input materials. This was done with a view to predict what the effect of the addition of different quantities of a manganese (Mn) ore, in the form of a ferromanganese (FeMn) ore, would be on the composition of the metal product produced in the reduction of to two different raw input slags.
  • Mn manganese
  • FeMn ferromanganese
  • the model was prepared for a ferro-manganese (FeMn) slag and a silicon- manganese (SiMn) slag.
  • the aim of the model was to predict the effect which the addition of the Mn ore, respectively to the FeMn slag and to the SiMn slag, in accordance with the method of the invention, can have on the composition of the metal product obtained by reduction of the slags by a suitable reductant, particularly as regards silicon content of the metal product.
  • the model also aimed to determine what effect such Mn ore addition would have on the amount of lime fluxing agent required to limit silicon content in the metal product.
  • the Mn ore was taken to have an essential chemical analysis, on a mass basis, as follows:
  • BOF(I), BOF(I I) and BOF(II I) are identified, only BOF(II) slag was used in executing the model.
  • reaction mixture comprising variable quantities of BOF slag and/or Fe fine, and variable amounts of Mn ore per 100kg of Mn ore plus FeMn slag air cooled slag as set out hereunder:
  • Mn ore (kg/100 kg slag feed) 0% + air cooled FeMn slag + BOF (II)
  • Mn ore (kg/100 kg slag feed) 15% + air cooled FeMn slag + BOF (II)
  • Mn ore (kg/100 kg slag feed) 0% + air cooled FeMn slag + Fe fines
  • Mn ore (kg/100 kg slag feed) 15% + air cooled FeMn slag + Fe fines
  • Mass and energy balances were prepared for the various chemical species taking part in reduction reactions which would, thermodynamically and theoretically, take place in each of the abovementioned scenarios. The mass and energy balances were then solved for a reaction temperature of 1500°C. In each case, the mass and energy balances were solved for amounts of reductant and lime required to meet a desired final slag basicity, expressed as a ratio of CaO concentration/Si0 2 by mass. In the case of the FeMn slag, the desired basicity was 1 .2 and in the case of the SiMn slag, the desired basicity was 1 .1 .
  • the silicon content in the metal alloy product decreases when Mn ore is added to the feed slag.
  • An alloy is predicted with a composition closer to the desired specification in the case of the SiMn slag, and within the desired specification in the case of the FeMn slag. It is important to note that, in the model used, the reduction reactions are modelled by calculating thermodynamic equilibrium at each reduction step and therefore ideal conditions were assumed where mass transfer does not limit the reduction reactions. This then means that the predicted silicon content in the alloy is expected to be the maximum value possible. In practice, it is expected the silicon content will be lower than predicted, due to mass transfer limitations reducing the reduction rate of the Si0 2 to Si.
  • the alloy yield (in kg per 100 kg slag and FeMn ore feed) increases with the addition of Mn ore to the slag feed. In the case of the SiMn slag feed, this increase is significant.
  • the requirement for lime in the feed mixture is significantly reduced when Mn ore is added to the feed mixture. Less CaO is therefore required to obtain the desired CaO/Si02 ratio in the product slag, comprising the processed slag and the molten metal.
  • the manganese oxide and iron oxide content of the FeMn ore increases the total amount of oxides which may be reduced, thus requiring more reductant to reduce the oxides to alloy species when the ore is added to FeMn slag or SiMn slags.
  • Liquidus temperature and slag solids for FeMn slag An increase in the final slag liquidus temperature is predicted when Mn ore is added to the FeMn slag, as well as more solids (5-7%) in the final slag. This is a result of the CaO/Si0 2 being set to 1 .2 . To obtain the higher ratio, more lime had to be added which resulted in the solid solution phase Ca 2 Si0 4 becoming more stable around the operating temperature. A higher liquidus temperature is therefore necessary to melt all the solids in the liquid slag.
  • the Applicant has thus unexpectedly found that the reduction of a metallurgical slag, containing a desired metal compound, in the presence of a metal ore limits the reduction of silica contained in the slag and therefore limits the amount of silicon contained in a metal alloy product, which is produced in accordance with the method of the invention. It has thus unexpectedly been found that the method of the invention enables the production of a commercially exploitable alloy from metallurgical slags which contain unreduced desired metal compounds.
  • the Applicant has also found that the quantity of calcium-containing fluxing agent, such as lime (CaO), typically in the form of limestone (CaC0 3 ), required to achieve or to maintain a desired basicity of the reaction mixture, expressed as CaO:Si0 2 decreases due to the presence of the ore in the reaction mixture, leading to higher throughput and higher metal product yield.
  • CaO calcium-containing fluxing agent
  • CaC0 3 limestone
  • an additional advantage of the invention is that the processed slag obtained in accordance with the method of the invention is amenable to downstream processing to produce cement extender products which comply with toxicological and technical specifications.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Manufacture And Refinement Of Metals (AREA)

Abstract

L'invention concerne un procédé de traitement de scories de la métallurgie qui contiennent au moins un composé de scories de métal souhaité. Selon ce procédé, on mélange les scories avec un agent réducteur et un minerai métallique préféré pour obtenir un mélange réactionnel. On chauffe ensuite ce mélange pour que l'agent réducteur réduise au moins le composé de scories de métal souhaité, donnant un produit métallique en fusion qui comprend au moins le métal souhaité. Le métal souhaité et le métal préféré peuvent être identiques, et il peut s'agir en particulier du manganèse.
PCT/IB2010/054008 2009-09-07 2010-09-07 Procédé de traitement de scories de la métallurgie Ceased WO2011027334A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2010290830A AU2010290830A1 (en) 2009-09-07 2010-09-07 Processing of metallurgical slag

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ZA200906192 2009-09-07
ZA2009/06192 2009-09-07

Publications (1)

Publication Number Publication Date
WO2011027334A1 true WO2011027334A1 (fr) 2011-03-10

Family

ID=42988214

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2010/054008 Ceased WO2011027334A1 (fr) 2009-09-07 2010-09-07 Procédé de traitement de scories de la métallurgie

Country Status (3)

Country Link
AU (1) AU2010290830A1 (fr)
WO (1) WO2011027334A1 (fr)
ZA (1) ZA201008736B (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2811038A4 (fr) * 2012-01-31 2015-03-11 Hyundai Steel Co Procédé de réduction de scorie
EP2839045A4 (fr) * 2012-04-16 2016-01-13 Outotec Finland Oy Procédé pour le traitement de laitier de métallurgie de métaux non ferreux
JP2016156074A (ja) * 2015-02-26 2016-09-01 Ｊｆｅスチール株式会社 金属マンガンの製造方法
CN114086004A (zh) * 2021-11-24 2022-02-25 安徽工业大学科技园有限公司 一种从富锰渣中选择性高效提取锰的方法

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US516710A (en) * 1894-03-20 Agglomerated iron ore and process of making same
US1521607A (en) * 1922-01-31 1925-01-06 Barton R Shover Method of extracting and recovering vanadium
US2438911A (en) * 1945-04-21 1948-04-06 Falconbridge Nickel Mines Ltd Process for recovering metal values from slags
US3326670A (en) * 1965-07-16 1967-06-20 Billy B Bratton Steelmaking process
US3734716A (en) * 1971-11-18 1973-05-22 Fmc Corp Steelmaking process
JPS5010525B1 (fr) * 1970-03-10 1975-04-22
SU1177035A1 (ru) * 1983-09-12 1985-09-07 Магнитогорский Дважды Ордена Ленина,Ордена Октябрьской Революции И Ордена Трудового Красного Знамени Металлургический Комбинат Им.В.И.Ленина Экзотермическа шлакообразующа смесь
US20080250899A1 (en) * 2005-09-12 2008-10-16 Anton Mecchi Processing Metallurgical Slag

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US516710A (en) * 1894-03-20 Agglomerated iron ore and process of making same
US1521607A (en) * 1922-01-31 1925-01-06 Barton R Shover Method of extracting and recovering vanadium
US2438911A (en) * 1945-04-21 1948-04-06 Falconbridge Nickel Mines Ltd Process for recovering metal values from slags
US3326670A (en) * 1965-07-16 1967-06-20 Billy B Bratton Steelmaking process
JPS5010525B1 (fr) * 1970-03-10 1975-04-22
US3734716A (en) * 1971-11-18 1973-05-22 Fmc Corp Steelmaking process
SU1177035A1 (ru) * 1983-09-12 1985-09-07 Магнитогорский Дважды Ордена Ленина,Ордена Октябрьской Революции И Ордена Трудового Красного Знамени Металлургический Комбинат Им.В.И.Ленина Экзотермическа шлакообразующа смесь
US20080250899A1 (en) * 2005-09-12 2008-10-16 Anton Mecchi Processing Metallurgical Slag

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
"INAFACON XI Proceedings", 2007, article T.C. ALEX, K.M. GODIWALLA, S.KUMAR AND R.K.JANA: "EXTRACTION OF SILICOMANGANESE FROM MARINE AND LOW GRADE MINERAL RESOURCES", pages: 206 - 214, XP002607236 *
EISSA MAMDOUH ET AL: "Production of high carbon ferromanganese using manganese rich slag in the charge", STEEL RESEARCH, DUESSELDORF, DE, vol. 69, no. 9, 1 September 1998 (1998-09-01), pages 373 - 380, XP009140574, ISSN: 0177-4832 *

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2811038A4 (fr) * 2012-01-31 2015-03-11 Hyundai Steel Co Procédé de réduction de scorie
EP2839045A4 (fr) * 2012-04-16 2016-01-13 Outotec Finland Oy Procédé pour le traitement de laitier de métallurgie de métaux non ferreux
US9435005B2 (en) 2012-04-16 2016-09-06 Outotec (Finland) Oy Method for processing slags of non-ferrous metallurgy
JP2016156074A (ja) * 2015-02-26 2016-09-01 Ｊｆｅスチール株式会社 金属マンガンの製造方法
CN114086004A (zh) * 2021-11-24 2022-02-25 安徽工业大学科技园有限公司 一种从富锰渣中选择性高效提取锰的方法
CN114086004B (zh) * 2021-11-24 2024-02-06 安徽工业大学科技园有限公司 一种从富锰渣中选择性高效提取锰的方法

Also Published As

Publication number Publication date
AU2010290830A1 (en) 2012-05-03
ZA201008736B (en) 2012-01-25

Similar Documents

Publication Publication Date Title
Jayasankar et al. Production of pig iron from red mud waste fines using thermal plasma technology
CZ2013531A3 (cs) Tavidlo pro aglomeraci, způsob výroby tavidla, aglomerační směs pro výrobu aglomerátu a použití strusek sekundární metalurgie jako tavidel pro přípravu aglomerační směsi
JP6230531B2 (ja) 金属クロムの製造方法
US10703675B2 (en) Method for processing steel slag and hydraulic mineral binder
EP3554998B1 (fr) Procédé de production de silicium de qualité commerciale
WO2011027334A1 (fr) Procédé de traitement de scories de la métallurgie
WO2011045755A1 (fr) Production d'un alliage de ferrochrome
CN1252296C (zh) 铁合金的生产方法
JP2011168830A (ja) アルミニウム合金溶湯用マグネシウム濃度調整剤及びそれを用いたマグネシウム濃度調整方法
JP2011246760A (ja) フェロモリブデンの製造方法およびフェロモリブデン
JP6451462B2 (ja) クロム含有スラグからのクロム回収方法
US10358693B2 (en) Method of direct reduction of chromite with cryolite additive
WO2024100852A1 (fr) Procédé de production d'alliage d'aluminium
TWI829129B (zh) 矽鐵釩及/或鈮合金、其製造及其用途
Cheng et al. Distribution and control mechanism of Al and O residuals in ferrotitanium prepared by aluminothermic reduction with insufficient Al
WO2023204069A1 (fr) Procédé de fusion de fer à réduction directe, fer solide et procédé de production de fer solide, et matériau de génie civil et de construction, et procédé de production de matériau de génie civil et de construction
Wang et al. Influence of Al2O3-induced MnO2–SiO2 smelting on silicate phase and consolidation behavior of manganese ore sinters
CN112400028A (zh) 钙、铝及硅合金以及其生产方法
US12060625B2 (en) Process for the recovery of metals from cobalt-bearing materials
US20250353787A1 (en) Beneficiation of metal slags for use as cement material
CA3077613C (fr) Procede de reduction directe de chromite avec un additif cryolite
WO2005024074A1 (fr) Procede destine a extraire des oxydes de titane cristallins
JP7338663B2 (ja) 含クロム溶鉄の製造方法
Tangstad Handbook of Ferroalloys: Chapter 7. Manganese Ferroalloys Technology
Qu et al. Impact of Carbon Content on Carbothermal Reduction to Produce Si-Al-Fe Alloy: Qu, Luo, Li, Qiao, and Wu

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 10760049

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

WWE Wipo information: entry into national phase

Ref document number: 2010290830

Country of ref document: AU

ENP Entry into the national phase

Ref document number: 2010290830

Country of ref document: AU

Date of ref document: 20100907

Kind code of ref document: A

122 Ep: pct application non-entry in european phase

Ref document number: 10760049

Country of ref document: EP

Kind code of ref document: A1