WO2009077425A1 - Procédé de fabrication de matériaux de construction à partir de scories d'aciérie - Google Patents

Procédé de fabrication de matériaux de construction à partir de scories d'aciérie Download PDF

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Publication number
WO2009077425A1
WO2009077425A1 PCT/EP2008/067335 EP2008067335W WO2009077425A1 WO 2009077425 A1 WO2009077425 A1 WO 2009077425A1 EP 2008067335 W EP2008067335 W EP 2008067335W WO 2009077425 A1 WO2009077425 A1 WO 2009077425A1
Authority
WO
WIPO (PCT)
Prior art keywords
slag
primary
building material
metallurgical slag
grinding stage
Prior art date
Application number
PCT/EP2008/067335
Other languages
German (de)
English (en)
Inventor
Andreas Jungmann
Original Assignee
Cala Aufbereitungstechnik Gmbh & Co. Kg
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 Cala Aufbereitungstechnik Gmbh & Co. Kg filed Critical Cala Aufbereitungstechnik Gmbh & Co. Kg
Publication of WO2009077425A1 publication Critical patent/WO2009077425A1/fr

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
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B18/00—Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
    • C04B18/04—Waste materials; Refuse
    • C04B18/14—Waste materials; Refuse from metallurgical processes
    • C04B18/141—Slags
    • C04B18/142—Steelmaking slags, converter slags
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
    • C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
    • C04B28/08—Slag cements
    • C04B28/082—Steelmaking slags; Converter slags
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B5/00—Treatment of  metallurgical  slag ; Artificial stone from molten  metallurgical  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
    • 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
    • C21C5/04—Manufacture of hearth-furnace steel, e.g. Siemens-Martin steel
    • C21C5/06—Processes yielding slags of special composition
    • 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
    • C22B7/005—Separation by a physical processing technique only, e.g. by mechanical breaking
    • 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
    • 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
    • Y02W30/91—Use of waste materials as fillers for mortars or concrete

Definitions

  • the invention relates to a process for the treatment of steel slag for the production of building materials, in which primary metallurgical slag produced in primary metallurgy is at least predominantly used
  • the present invention relates to a building material for the production of concrete products containing a first and at least one further building material, wherein the first building material from a primary metallurgy slag product and the further building material consists of a secondary metallurgical slag product, which according to are prepared according to the invention.
  • Steel slags are produced in the production of alloyed and unalloyed steels, which are generally produced in two stages by melting in the electric furnace operation (primary metallurgy) as well as in converter operation and the
  • Pfannenmetallurgie (secondary metallurgy) are produced.
  • the above-mentioned manufacturing processes are different slags due to the two-stage process.
  • cooling of the so-called primary metallurgical slag is carried out in buckets.
  • the casting of the stainless steel melt results in the formation of a so-called secondary or ladle metallurgical slag.
  • slags are generated, most of which break down finely.
  • the chemical composition of the slag species varies somewhat depending on the aggregates, but can be characterized essentially as follows:
  • the slag is usually slowly cooled in pails or poured into beds; furthermore, a careful spraying with water usually takes place, which serves for the final cooling as well as the dust precipitation.
  • the metal recovery methods used are dry processes, which are typically fracturing, screening, magnetic separation and hand-picking. Recently, efforts have been made to use sensor sorting techniques, which may be termed automated picking. These recognize, for example, by means of inductive sensors metals and eject them by means of compressed air. Wet processes through a combination of selective comminution in crushers and rod and ball mills release the metal content, which can not be crushed due to its ductility. These shares are then recovered by classification. This procedure sometimes combines a multi-stage density separation as well as the use of wet magnetic separators.
  • the invention is based on the object of proposing a method which makes the use of steel slag, in particular stainless steel slag, appear attractive as a building material on an industrial scale.
  • two slag components are combined, of which at least one slag component is hydraulically active, that is to say that it is comparable with cement in its setting action.
  • a second portion of slag can be ground dry or with the addition of water, ie in a wet process, preferably for producing a fine grain, ie ⁇ 0.2 mm.
  • the method is particularly advantageous executable when the primary metallurgical slag and the secondary metallurgical slag of the same Derived from melt, so the process in the immediate continuation of a kiln line in the processes of a steel plant can be integrated.
  • the proportion of the primary metallurgy slag fed to the dry grinding stage is formed from an upper volume fraction of a slag volume arranged in a slag container for receiving the primary metallurgical slag and the volume fraction of the primary metallurgical slag supplied to the second grinding stage from a lower volume fraction of the slag volume.
  • a smaller proportion of the primary metallurgical slag removed from the lower volume fraction can preferably be combined with the secondary metallurgical slag without prior granulation and fed therewith to the second grinding stage.
  • the granulation of the primary metallurgy slag fraction takes place with supply of cooling gas, the granulation can be significantly accelerated.
  • the properties of the granules can be influenced.
  • additives such as sand
  • substances which influence the viscosity of the slag it can be achieved, for example, that existing residual metal fractions deposit more easily or more quickly at the bottom of the slag vessel.
  • two slag components are combined, of which a slag component is hydraulically active, ie cementable in its setting effect, and a second slag component dry or with the addition of water, ie in a wet process of comminution preferably for producing a fine grain, ie ⁇ about 0.2 mm, is treated.
  • the second grinding carried out dry it is possible to dispense with an optionally previously carried out granulation.
  • a method for producing the hydraulically active slag component is a cooling of the first formed as a primary metallurgical slag slag portion for producing a granulate and subsequent comminution of the granules for producing a hydraulically active grain mass in a dry process carried out, is comminuted for crushing the slag content preferably in a grinding process, This means that this first slag fraction serves as a quasi-cement substitute.
  • cooling gas when the cooling gas is air, a particularly fine granulation can be achieved by a corresponding oversupply of oxygen.
  • the building material according to the invention for the production of concrete products has the features of claim 1 1.
  • the building material contains a first and at least one further component of building material, wherein the first component of building material consists of a primary metallurgical slag product and the further component of building material consists of a secondary metallurgical slag product produced according to a method according to one of claims 1 to 10 are.
  • the building material must have no or only a very small proportion of cement in order to be used for the production of concrete products, when the primary metallurgical slag product and the secondary metallurgical slag product in a ratio between 1: 1, 5 and 1: 4 are present.
  • the building material prefferably has the primary metallurgical slag product and the secondary metallurgical slag product in a ratio of between 1: 1, 8 and 1: 2.4.
  • the building material according to the invention can be used in an embodiment particularly advantageous for the production of ready-mixed concrete.
  • a use of the building material for the production of concrete components, in particular prefabricated components proves to be advantageous.
  • the use of the building material according to the invention for the production of concrete blocks is advantageous, in which case the use for the production of paving stones is particularly noteworthy, since here due to the building material according to the invention usually contained in conventional paving stones shares of binders and fillers, especially on fly ash and cement, can be significantly reduced or almost replaced, whereby the manufacturing cost of paving stones can be reduced accordingly in the result.
  • a building material composition has proven to be particularly advantageous for such a paving stone proven in which the fly ash fraction to 100% and the usually existing cement content to about 2/3 are replaced by the use of the building material according to the invention.
  • the slag of the secondary metallurgy is usually referred to as it "post-shreds" in the further course of deposition due to the chemical reactions in the strongly basic product.
  • the ratio of the two slag proportions is in the first approximation and with certain deviations 50:50 ,
  • the primary metallurgical slag can now be glazed by sudden cooling and does not tend to decay.
  • a composition is given that promises hydraulicity.
  • the primary metallurgical slag is tipped out of the pails in 2 phases:
  • the secondary metallurgical slag is conventionally cooled. This results in a bulk split of about 30-35% vitrified primary slag and 65-70% conventionally cooled secondary dross.
  • the glazed portion is fed to a dry grinding; the conventionally cooled slag enters the wet grinding process.
  • a hydraulically active product is produced, which serves as a cement substitute (Blaine values> 3000 cnrVg), in order to bind the wet-finely shredded residual slags in the concrete technical processing.
  • environmentally relevant pollutants are safely integrated with significantly reduced addition of regular cement. This leads to a considerable cost savings.
  • the technical concrete utilization is, for example, the production of artificial aggregate or the production of sand-rich concretes. A replacement of up to 75% of the usual regular binder is possible.
  • the further processing of the primary metallurgical slag and the secondary metallurgical slag can take place as illustrated by way of example with reference to the drawing figure, wherein 1/3 of the slag (primary metallurgical slag) is subjected to dry grinding and 2/3 the slag (namely the secondary metallurgical slag) is wet milled with the high content of ultrafine grain.
  • 1/3 of the slag primary metallurgical slag
  • 2/3 the slag namely the secondary metallurgical slag
  • the metal recycling processes used in wet processing are the known systems; In the dry processing, a density separation process in a fluidized fluidized bed, possibly in combination with a high-pressure dry separation, can be used in the circulation with the screening process for cement flour separation. If the second grinding is also dry grinding, metal recovery processes in a fluidized fluidized bed in conjunction with magnetic separation can also be used.
  • Fractions above 8 and below 1, 5 mm are not or only to a limited extent fed to the processing by the dry grinding.
  • the slag not supplied to the glazing enter the wet grinding or the second dry grinding.
  • the illustrated method for the treatment and utilization of stainless steel slag by the inventive combination of first dry and second dry or wet treatment of the slag allows the production of a hydraulically active product based on the dry-processed stainless steel slag content and also due to the dry processing a Increasing the output of metal from the slag allows.
  • the essential steps of the process for producing a building material based on a steel slag are:

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Ceramic Engineering (AREA)
  • Metallurgy (AREA)
  • Manufacturing & Machinery (AREA)
  • Structural Engineering (AREA)
  • Environmental & Geological Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Geology (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Inorganic Chemistry (AREA)
  • Civil Engineering (AREA)
  • Processing Of Solid Wastes (AREA)
  • Curing Cements, Concrete, And Artificial Stone (AREA)

Abstract

L'invention concerne un procédé de transformation de scories d'aciérie en vue de la fabrication de matériaux de construction, selon lequel des scories métallurgiques primaires provenant de la métallurgie primaire sont granulées au moins pour une part prépondérante et sont broyées à sec dans un étage de broyage à sec, des scories de métallurgie secondaire produites en métallurgie secondaire sont broyées dans un deuxième étage de broyage, les produits de scories de métallurgie primaire et de métallurgie secondaire ainsi préparés sont ajoutés, chaque fois après séparation du métal, à un matériau de construction en vue de la préparation de produits de béton, ainsi que le matériau de construction fabriqué à l'aide du procédé. Selon le procédé de l'invention de fabrication de matériaux de construction à base de scories d'aciérie, en particulier de scories de fabrication d'acier allié, deux fractions de scories, dont au moins une fraction de scories est hydrauliquement active (scories de métallurgie primaire), sont rassemblées.
PCT/EP2008/067335 2007-12-18 2008-12-11 Procédé de fabrication de matériaux de construction à partir de scories d'aciérie WO2009077425A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102007061671 2007-12-18
DE102007061671.8 2007-12-18

Publications (1)

Publication Number Publication Date
WO2009077425A1 true WO2009077425A1 (fr) 2009-06-25

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9212404B2 (en) 2010-03-05 2015-12-15 Loesche Gmbh Preparation method for stainless steel slags and steelworks slags for recovery of metal
CN105837065A (zh) * 2016-04-21 2016-08-10 东南大学 一种固定吸附重金属的钢渣路基土处治办法
CN109250929A (zh) * 2018-11-14 2019-01-22 韶关学院 一种g85级钢铁渣粉及其制备方法
CN111153617A (zh) * 2020-01-07 2020-05-15 四川联绿强环保科技有限公司 一种利用建筑垃圾的再生复合掺合料及其制备方法
AT17171U1 (de) * 2020-03-30 2021-07-15 Bauunternehmung Granit Ges M B H Elektroofenschlacke zur Substitution von herkömmlicher Gesteinskörnung in Beton
CN114276031A (zh) * 2022-01-04 2022-04-05 江苏省沙钢钢铁研究院有限公司 道路工程用钢渣的制备方法
EP4276084A1 (fr) * 2022-05-10 2023-11-15 Ecocem Materials Limited Compositions de liant hydraulique comprenant des scories d'acier, un co-liant et un sel minéral alcalin

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2041175C1 (ru) * 1992-09-23 1995-08-09 Маргарита Владимировна Бородянская Способ получения строительных материалов из шлака металлургического производства
EP1146022A2 (fr) * 1996-10-17 2001-10-17 Trading and Recycling Company Sint Truiden Procédé de traitement de laitiers d'acier inoxydable
JP2004051425A (ja) * 2002-07-19 2004-02-19 Denki Kagaku Kogyo Kk セメント混和材及びセメント組成物
CN1749418A (zh) * 2004-09-17 2006-03-22 Posco公司 用于处理不锈钢生产过程中的炉渣的方法
WO2008145189A1 (fr) * 2007-05-31 2008-12-04 Recmix Belgium Procédé de préparation d'une charge pour asphalte ou béton à partir d'une matière de laitier

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2041175C1 (ru) * 1992-09-23 1995-08-09 Маргарита Владимировна Бородянская Способ получения строительных материалов из шлака металлургического производства
EP1146022A2 (fr) * 1996-10-17 2001-10-17 Trading and Recycling Company Sint Truiden Procédé de traitement de laitiers d'acier inoxydable
JP2004051425A (ja) * 2002-07-19 2004-02-19 Denki Kagaku Kogyo Kk セメント混和材及びセメント組成物
CN1749418A (zh) * 2004-09-17 2006-03-22 Posco公司 用于处理不锈钢生产过程中的炉渣的方法
WO2008145189A1 (fr) * 2007-05-31 2008-12-04 Recmix Belgium Procédé de préparation d'une charge pour asphalte ou béton à partir d'une matière de laitier

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
DATABASE WPI Week 200420, Derwent World Patents Index; AN 2004-208469, XP002522924 *
DATABASE WPI Week 200680, Derwent World Patents Index; AN 2006-782166, XP002522923 *
MOOSBERG-BUSTNES H: "Steel-Slag as filler material in concrete", VII INTERNATIONAL CONFERENCE ON MOLTEN SLAGS, FLUXES AND SALTS, THE SOUTH AFRICAN INSTITUTE OF MINING AND METALLURGY, 1 January 2004 (2004-01-01), pages 385 - 391, XP002480614 *

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9212404B2 (en) 2010-03-05 2015-12-15 Loesche Gmbh Preparation method for stainless steel slags and steelworks slags for recovery of metal
CN105837065A (zh) * 2016-04-21 2016-08-10 东南大学 一种固定吸附重金属的钢渣路基土处治办法
CN105837065B (zh) * 2016-04-21 2018-01-16 东南大学 一种固定吸附重金属的钢渣路基土处治办法
CN109250929A (zh) * 2018-11-14 2019-01-22 韶关学院 一种g85级钢铁渣粉及其制备方法
CN109250929B (zh) * 2018-11-14 2021-03-23 韶关学院 一种g85级钢铁渣粉及其制备方法
CN111153617A (zh) * 2020-01-07 2020-05-15 四川联绿强环保科技有限公司 一种利用建筑垃圾的再生复合掺合料及其制备方法
AT17171U1 (de) * 2020-03-30 2021-07-15 Bauunternehmung Granit Ges M B H Elektroofenschlacke zur Substitution von herkömmlicher Gesteinskörnung in Beton
CN114276031A (zh) * 2022-01-04 2022-04-05 江苏省沙钢钢铁研究院有限公司 道路工程用钢渣的制备方法
EP4276084A1 (fr) * 2022-05-10 2023-11-15 Ecocem Materials Limited Compositions de liant hydraulique comprenant des scories d'acier, un co-liant et un sel minéral alcalin
WO2023217811A1 (fr) * 2022-05-10 2023-11-16 Ecocem Materials Limited Compositions de liant hydraulique comprenant du laitier de fabrication d'acier, un co-liant et un sel minéral alcalin

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