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EP3573931A1 - Procédé de fabrication d'un liant de conditionnement de boues, de sols aqueux ainsi que de neutralisation d'acides - Google Patents

Procédé de fabrication d'un liant de conditionnement de boues, de sols aqueux ainsi que de neutralisation d'acides

Info

Publication number
EP3573931A1
EP3573931A1 EP18704879.8A EP18704879A EP3573931A1 EP 3573931 A1 EP3573931 A1 EP 3573931A1 EP 18704879 A EP18704879 A EP 18704879A EP 3573931 A1 EP3573931 A1 EP 3573931A1
Authority
EP
European Patent Office
Prior art keywords
slag
binder
fraction
drying
crushed
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.)
Withdrawn
Application number
EP18704879.8A
Other languages
German (de)
English (en)
Inventor
Claus Gronholz
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.)
Tartech eco Ind AG
Tartech Eco Industries AG
Original Assignee
Tartech eco Ind AG
Tartech Eco Industries AG
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 Tartech eco Ind AG, Tartech Eco Industries AG filed Critical Tartech eco Ind AG
Publication of EP3573931A1 publication Critical patent/EP3573931A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
    • B09B—DISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
    • B09B3/00—Destroying solid waste or transforming solid waste into something useful or harmless
    • B09B3/20—Agglomeration, binding or encapsulation of solid waste
    • B09B3/25—Agglomeration, binding or encapsulation of solid waste using mineral binders or matrix
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
    • B03B9/00—General arrangement of separating plant, e.g. flow sheets
    • B03B9/04—General arrangement of separating plant, e.g. flow sheets specially adapted for furnace residues, smeltings, or foundry slags
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F11/00—Treatment of sludge; Devices therefor
    • C02F11/008—Sludge treatment by fixation or solidification
    • 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
    • C04B18/0418—Wet materials, e.g. slurries
    • 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
    • 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
    • C04B7/00—Hydraulic cements
    • C04B7/24—Cements from oil shales, residues or waste other than slag
    • C04B7/28—Cements from oil shales, residues or waste other than slag from combustion residues, e.g. ashes or slags from waste incineration
    • 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
    • C04B7/00—Hydraulic cements
    • C04B7/36—Manufacture of hydraulic cements in general
    • C04B7/38—Preparing or treating the raw materials individually or as batches, e.g. mixing with fuel
    • C04B7/40—Dehydrating; Forming, e.g. granulating
    • 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
    • C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
    • C04B2111/00767—Uses not provided for elsewhere in C04B2111/00 for waste stabilisation purposes
    • C04B2111/00784—Uses not provided for elsewhere in C04B2111/00 for waste stabilisation purposes for disposal only

Definitions

  • the invention relates to a method for producing a binder of slag from waste incineration plants for the conditioning of sludges, such as. As dredged material / dredging sludge, aqueous soils and for the neutralization of acids.
  • the invention relates to the production of a slag binder from municipal solid waste incinerators, so-called HMVA slag.
  • HMVA slag municipal solid waste incinerators
  • the invention may also relate to slags of other thermal waste utilization.
  • Conditioning is understood to mean a treatment which alters or maintains the properties of the slag.
  • the dredged material is of low strength, so that it can be deposited even in the puncture resistant state only with a low angle of repose. Because of the constant it is also necessary to provide drainage layers of sand between the layers of dredged material, which are also provided with drainage pipes to allow the water to escape. It is known that a layer of dredged material on the landfill can only be about 600 to 800 mm high. In between, there must be an approximately 200 to 300 mm thick drainage layer. There are therefore relatively complex and large-scale landfills required, especially since the water leaks over a very long time.
  • the dumping of dredged material is a problem, for example, for the city of Hamburg, as the port of Hamburg and the Elbe must be dredged continuously so that the ships can reach the port in the port because of their draft.
  • This dredged material is also contaminated.
  • the city of Hamburg has only limited land available, so that the large-scale landfill of the dredged material is not readily possible.
  • the additional drainage layers require a large portion of the landfill volume for inert sand. Overall, therefore, a relatively large area must be provided for relatively little to be dumped dredged material, which is available in the city-state of Hamburg, however, only limited.
  • the invention has for its object to provide an inexpensive binder for the conditioning of the dredged material through which the dredged material is solidified and thus allows a larger slope angle.
  • the slag from a waste incineration plant is crushed, that the crushed slag in a fraction greater than 2.0 or 3, 0 mm and a fraction smaller than 2.0 or 3.0 mm is classified, that the separated smaller fraction 0 / 2.0 or 0 / 3.0 mm dried in a dryer to a final moisture content of less than 1.5 wt .-% - 2.5 wt .-%, whereby the pozzolanic properties of Slag are maintained so that the dryer discharge is further comminuted with a high speed impact mill to form stable cubic shaped particles, and that from this crushed slag the fraction forming the binder is separated from 0/500 to 0/750 ym.
  • HMVA household waste incinerators
  • CaO calcium oxide, quicklime
  • Al 2 03 + Fe 2 03 alumina + iron (111) oxide
  • Si0 2 silicon, quartz
  • fractional limits 0 / 2.0 mm or 0 / 3.0 mm are regarded as limit values for the grain boundary, which is defined by the sieve used.
  • the specified range thus also includes the intermediate values for the grain boundary, for example the fraction 0 / 2.5 mm.
  • metal-containing substances are removed during the treatment process of the slag before drying.
  • recyclable metals are recovered from the otherwise dumped on the landfill slag, whereby the manufacturing process of the binder is also economically favorable.
  • the drying of the separated smaller fraction 0 / 2.0 or 0 / 3.0 mm takes place in a drum dryer.
  • the drying is preferably carried out in the DC method. It has been found that this co-current drying allows the pozzolanic properties to be maintained uniformly and well. It is envisaged that the drying is carried out at a temperature in the drum of 270 ° C to 330 ° C. In particular, it is provided that the temperature in the drum outside the burner zone does not exceed 300 ° C in order to favor the process for the maintenance of the pozzolanic properties of the crushed slag.
  • the metal-containing substances are at least partially further removed from the separated fraction 0 / 2.0 or 0 / 3.0 mm after drying. Thus, the yield from the slag can be further increased by recovered metals, so that the manufacturing cost of the binder can be further reduced.
  • the slag is behind the dryer in the form of irregularly fissured particles. It is useful if the crushing after drying in a High speed impact mill is performed. As a result, the unstable sintered conglomerates are crushed into compact cubic shaped particles. From this mixture, the fraction 0/500 or 0/750 ym is separated as a binder. This can be done with conventional classification methods.
  • the compact cubic shaped particles produced by the high speed impact mill are well miscible so that the binder can be mixed with the dredged material with simple mixing devices.
  • the binder comprises the fraction 0/500 or 0/750 ym, to which the filter dust obtained, whose particles are generally smaller than 50 ⁇ m, also fits.
  • the fraction ⁇ 500 or ⁇ 750 ⁇ m of the slag can therefore be used completely as a binder.
  • the invention also relates to a binder which consists of a fraction ⁇ 500 ym to ⁇ 750 ym of a slag from mill incineration plants, which has been treated by the method described above.
  • the binder is made from a waste product and is thus inexpensive and available in large quantities.
  • the invention relates to a landfillable substance mixture consisting of a wet, puncture resistant dredged to which the binder prepared by the method described above has been added and mixed with this or conditioned. Underneath is understood a state in which the dredged material can be tapped with a shovel and transported. It is provided that the binder content between 10 wt .-% and 40 wt .-% and in particular between 20 wt .-% and 30 wt .-% is.
  • the binder can be produced inexpensively from a waste product, the slag from waste incineration plants. Together with the wet dredged material, a landfillable mixture of sufficient strength is created which allows landfill with a relatively steep slope angle. Furthermore, it has been shown that the swelling behavior of the substance mixture is small, so that the volume remains relatively constant. The landfill is thus easier.
  • Time dredged material 10 wt% + 20 wt% + 30 wt%
  • the tables with the measured values show that the substance mixture to be disposed after 28 days has a high compressive strength and a high wing shear strength, which are sufficient to fill up a landfill with a steeper slope angle. Due to the lower water content, the provision of additional drainage layers is no longer necessary since this water is already bound during conditioning and does not escape. It can therefore be deposited on a smaller area significantly more dredged material.
  • the manufacturing cost of the binder are by the cost savings in the Landfill and compensated by the recoverable from the slag recyclables.
  • the binder is also suitable for the conditioning and solidification of industrial sludges, such as the so-called red sludge from the primary aluminum production. After conditioning the red mud with the binder, this substance mixture can be deposited more efficiently. Also can be conditioned with the binder drilling mud from oil production and thus made landfillable.
  • binder Another use of the binder is to use it as a neutralizing agent for acidic waste from the chemical industry due to the high pH of 10.0 - 11.5 and its fine grain structure and its low residual moisture.
  • the high ph value results from the formation-related contents of the slag and from the hydration of the slag with lime (Ca (OH) 2) r which possesses basic properties. This gives the slag its moisture as well.
  • the slag 11 originating from a waste incineration plant is first stored in a temporary storage facility 12 for a predetermined time of 2.5 to 3.5 months. Subsequently, the slag is comminuted in a first crushing device, for example in an impact mill 13. From the crushed slag 14 metallic components are separated in a known separation device. By magnetic separator Ferrous metals can be separated. These metals 15 are sent for further use.
  • the thus cleaned of metals slag passes into a first classifying station 16, in which the slag is classified into a fraction greater than 3.0 mm and a fraction less than 3.0 mm.
  • the fraction 17 greater than 3.0 mm is discharged for another use.
  • the fraction smaller than 3.0 mm is fed to a drum dryer 18, in which the slag is dried in the DC process to a residual moisture content of ⁇ 1.5 wt .-% to ⁇ 2.0 wt .-%.
  • the temperature at the burner 19 is about 600 ° C, while the temperature in the drum is about 300 ° C.
  • the drying process at these temperatures reactivates the pozzolanic properties of the slag.
  • the water vapor 20 produced during drying is drawn off with a filter system, not shown.
  • the solids discharge of the drying is further comminuted in a second comminution device 21.
  • This can be done, for example, in a high speed impact mill where the fissured unstable sintered conglomerates are comminuted to form stable cubic shaped particles.
  • the particles may be sputtered open releasing the metals contained therein.
  • This thus crushed slag is fed to another Metallabscheidevoriques 22.
  • the non-ferrous metals and the ferrous metals 23 are removed from the slag and sent for further use.
  • the remaining slag is then separated in a second classifier 24 into a fraction greater than 750 ym and a fraction smaller than 750 ym.
  • the fraction 25 greater than 750 ym is discharged for another use.
  • the fraction 0/750 ym has the desired pozzolanic properties and grain structures. This fraction is mixed in a mixing device 26 with the filter dust 27 from the filter unit of the drying device 18. This mixture forms the binder 28.
  • the binder 28 can be mixed in a mixing plant with dredged material and then transferred to a landfill. There, the substance mixture hardens out of dredged material and binder. Due to the setting, there is no longer the risk that water will escape or substances that pollute the environment will be washed out.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Organic Chemistry (AREA)
  • Environmental & Geological Engineering (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Hydrology & Water Resources (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Water Supply & Treatment (AREA)
  • Combustion & Propulsion (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Inorganic Chemistry (AREA)
  • Civil Engineering (AREA)
  • Processing Of Solid Wastes (AREA)
  • Treatment Of Sludge (AREA)
  • Soil Conditioners And Soil-Stabilizing Materials (AREA)
  • Curing Cements, Concrete, And Artificial Stone (AREA)

Abstract

L'invention concerne un procédé de fabrication d'un liant du laitier destiné au conditionnement de boues/boues de dragage, de sols aqueux et destiné à la neutralisation d'acides. Selon l'invention, le laitier d'un incinérateur de déchets est broyé, puis, séparé du métal et le laitier broyé est classé en une fraction supérieure à 2,0 - 3,0 mm et en une fraction inférieur à 2,0 - 3,0 mm de telle sorte que la fraction 0/2,0 - 0/3,0 mm est séchée dans un séchoir à une teneur finale en humidité inférieure à 1,5 % p/p - 2,5 % p/p, les propriétés pouzzolaniques du laitier étant réactivées, la décharge du séchoir étant en outre broyé par un broyeur haute vitesse en une structure de grain cubique stable et le métal dégagé résultant étant séparé et de telle sorte que la fraction 0/500 - 0/750 µm formant le liant est séparée dudit laitier broyé.
EP18704879.8A 2017-01-27 2018-01-24 Procédé de fabrication d'un liant de conditionnement de boues, de sols aqueux ainsi que de neutralisation d'acides Withdrawn EP3573931A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102017101628.7A DE102017101628A1 (de) 2017-01-27 2017-01-27 Verfahren zum Herstellen eines Bindemittels für die Konditionierung von Schlämmen, wasserhaltigen Böden sowie für die Neutralisation von Säuren
PCT/EP2018/051693 WO2018138131A1 (fr) 2017-01-27 2018-01-24 Procédé de fabrication d'un liant de conditionnement de boues, de sols aqueux ainsi que de neutralisation d'acides

Publications (1)

Publication Number Publication Date
EP3573931A1 true EP3573931A1 (fr) 2019-12-04

Family

ID=61198795

Family Applications (1)

Application Number Title Priority Date Filing Date
EP18704879.8A Withdrawn EP3573931A1 (fr) 2017-01-27 2018-01-24 Procédé de fabrication d'un liant de conditionnement de boues, de sols aqueux ainsi que de neutralisation d'acides

Country Status (8)

Country Link
US (1) US20200038924A1 (fr)
EP (1) EP3573931A1 (fr)
JP (1) JP2020511584A (fr)
CN (1) CN110914203A (fr)
CA (1) CA3053602A1 (fr)
DE (1) DE102017101628A1 (fr)
RU (1) RU2019126449A (fr)
WO (1) WO2018138131A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113909261B (zh) * 2021-11-15 2023-06-06 长沙理工大学 一种脱水清淤底泥的资源化利用方法

Family Cites Families (16)

* Cited by examiner, † Cited by third party
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DE3809938A1 (de) * 1988-03-24 1989-10-05 Metallgesellschaft Ag Verfahren zum erzeugen von flugasche enthaltenden formkoerpern
DE3934085A1 (de) * 1988-10-18 1990-04-19 Salzburger Stadtwerke Ag Verfahren zur einbindung und verfestigung von festen und fluessigen stoffen mit einem gehalt an schwermetallen
DE4123277C1 (en) * 1991-07-13 1993-05-27 Rwe Entsorgung Ag, 4300 Essen, De Handling waste combustion slag allowing removal of valuable materials - by reducing raw slag material and then removing dust components and wet sorting to separate light fraction
CH683676A5 (de) * 1992-05-12 1994-04-29 Holderbank Financ Glarus Verfahren zur Aufbereitung von Kehrichtverbrennungsrückständen zu einem umweltverträglichen und für Bauzwecke verwendbaren Produkt.
CN101049600A (zh) * 2006-04-04 2007-10-10 天津泰达环保有限公司 一种城市垃圾焚烧炉渣资源化利用方法
JP5224692B2 (ja) * 2007-01-26 2013-07-03 株式会社冨士機 浚渫土ブロック施工法
CN101397164A (zh) * 2007-09-24 2009-04-01 宝山钢铁股份有限公司 烧结烟气脱硫过程中烟气冷却废水的处理方法及处理后产物的用途
DE102008004477A1 (de) 2007-10-26 2009-04-30 Scherer & Kohl Gmbh & Co.Kg Verfahren zur Schlackenaufbereitung
DE102008015012A1 (de) 2008-03-19 2009-09-24 Haßlinger, Hans-Günter Verfahren zum Abdichten von Deponien
TW200942338A (en) * 2008-04-08 2009-10-16 Kobin Environmental Entpr Co Ltd Treatment process for incineration fly ash
WO2011108065A1 (fr) * 2010-03-01 2011-09-09 電気化学工業株式会社 Additif pour ciment et composition de ciment
CN101941825B (zh) * 2010-09-06 2012-07-04 广东绿由环保科技股份有限公司 一种用含油污泥再生煤燃烧废渣生产的环保砖及制造方法
CN102060426A (zh) * 2010-11-16 2011-05-18 天津泰达环保有限公司 一种利用干燥污泥和焚烧飞灰制备陶粒的方法
US20150344363A1 (en) * 2013-01-07 2015-12-03 Sachtleben Chemie Gmbh Titanium-Containing Aggregate, Method for its Manufacture, and Use Thereof
EP2903756B1 (fr) * 2013-12-13 2016-11-23 Recoval Belgium Méthode de production de matériau barrière à eau comme couverture de décharge, recouvrement ou confinement de décharge sous et/ou sur le côté d'une décharge, et matériau de barrière à eau produit ainsi
CN104878935B (zh) * 2015-04-17 2017-10-10 张彭成 一种可以控制凝结时间的混凝土施工方法及其专用设备

Also Published As

Publication number Publication date
WO2018138131A1 (fr) 2018-08-02
CA3053602A1 (fr) 2018-08-02
CN110914203A (zh) 2020-03-24
US20200038924A1 (en) 2020-02-06
DE102017101628A1 (de) 2018-08-02
JP2020511584A (ja) 2020-04-16
RU2019126449A (ru) 2021-03-01

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