WO2019195577A1 - Matériau synthétique durci non toxique contenant des particules toxiques et non toxiques encapsulées - Google Patents

Matériau synthétique durci non toxique contenant des particules toxiques et non toxiques encapsulées Download PDF

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Publication number
WO2019195577A1
WO2019195577A1 PCT/US2019/025833 US2019025833W WO2019195577A1 WO 2019195577 A1 WO2019195577 A1 WO 2019195577A1 US 2019025833 W US2019025833 W US 2019025833W WO 2019195577 A1 WO2019195577 A1 WO 2019195577A1
Authority
WO
WIPO (PCT)
Prior art keywords
toxic
product
fly ash
glass forming
particles
Prior art date
Application number
PCT/US2019/025833
Other languages
English (en)
Inventor
Richard Patterson
Original Assignee
Citymix, Inc.
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 Citymix, Inc. filed Critical Citymix, Inc.
Publication of WO2019195577A1 publication Critical patent/WO2019195577A1/fr

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C14/00—Glass compositions containing a non-glass component, e.g. compositions containing fibres, filaments, whiskers, platelets, or the like, dispersed in a glass matrix
    • C03C14/004—Glass compositions containing a non-glass component, e.g. compositions containing fibres, filaments, whiskers, platelets, or the like, dispersed in a glass matrix the non-glass component being in the form of particles or flakes
    • 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
    • C04B20/00—Use of materials as fillers for mortars, concrete or artificial stone according to more than one of groups C04B14/00 - C04B18/00 and characterised by shape or grain distribution; Treatment of materials according to more than one of the groups C04B14/00 - C04B18/00 specially adapted to enhance their filling properties in mortars, concrete or artificial stone; Expanding or defibrillating materials
    • C04B20/10—Coating or impregnating
    • C04B20/1055—Coating or impregnating with inorganic materials
    • C04B20/1074—Silicates, e.g. glass
    • 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
    • C04B20/00—Use of materials as fillers for mortars, concrete or artificial stone according to more than one of groups C04B14/00 - C04B18/00 and characterised by shape or grain distribution; Treatment of materials according to more than one of the groups C04B14/00 - C04B18/00 specially adapted to enhance their filling properties in mortars, concrete or artificial stone; Expanding or defibrillating materials
    • C04B20/10—Coating or impregnating
    • C04B20/1055—Coating or impregnating with inorganic materials
    • C04B20/1077—Cements, e.g. waterglass
    • C04B20/1085—Waterglass
    • 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
    • C04B26/00—Compositions of mortars, concrete or artificial stone, containing only organic binders, e.g. polymer or resin concrete
    • C04B26/02—Macromolecular compounds
    • C04B26/04—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • C04B26/06—Acrylates
    • 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
    • C04B28/04—Portland 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
    • 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
    • C04B28/24—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 alkyl, ammonium or metal silicates; containing silica sols
    • C04B28/26—Silicates of the alkali metals
    • 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
    • C04B2111/00482—Coating or impregnation materials
    • 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
    • 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

  • fly ash is also commonly separated and collected from manufacturing combustion chambers. Under certain specific conditions occurring during the combustion process, the produced fly ash may contain certain toxic or otherwise undesirable particles, such as lead, arsenic, cadmium and/or other metals. Fly ash containing certain measurable levels of such toxic/undesirable waste particles can make the material unsuitable for commercial use and require costly handling, transport and disposal at special landfills certified to accept such hazardous material. Millions of tons of fly ash containing unacceptable levels of toxic particles are produced annually in the United States. But despite relocation to approved landfills, fly ash containing toxic waste particles remains an environmental risk. There is a need to reduce the quantity of toxic fly ash deposited in landfills each year, and a greater need to permanently transform this material into a non-toxic state. BRIEF DESCRIPTION OF INVENTION
  • One object of the invention is to fully encapsulate and bonded toxic fly ash within a hardened mixture that prevents any significant subsequent release or leaching of toxic elements into the environment.
  • Another object is to produce a secondary product from the fly ash which can be used for safe and useful purposes, such as a hardened material useful as a non-toxic aggregate.
  • Fig. 1 is a flow chart of an exemplary embodiment
  • toxic fly ash is coated with a glass forming silica salt.
  • the silica salt is sodium silicate.
  • other forms of silica salts such as potassium silicate and lithium silicate, amongst others, may also be used.
  • the glass forming silicate maybe sprayed onto or otherwise mixed with fly ash.
  • the fly ash and the glass forming silica salt is dried to harden.
  • the hardened fly ash and glass forming silica salt is formed or processed into an aggregate or powder.
  • a wetting agent and/or coating and/or powders are added to the fly ash and glass forming silica salt to increase the hardness of the product and increase its utility.
  • the product described herein can be blended with stucco, mortars, grouts, concrete or other cementitious mixes and/or may be suitable for use in a wide variety of both structural and non-structural cement-based mixes.
  • Non-structural usage examples could include landfill cover, decorative gravels, roadbed fill, or as a general, all-purpose lightweight aggregate.
  • a wetting agent 20 is, preferably, water mixed with a glass forming silica salt 30.
  • a thickening agent 40 such as acrylic is also added.
  • Fly ash 10 is thoroughly combined with the wetting agent 20 using a mixing device, such as a paddle mixer, or other blending method, such that the toxic fly ash is substantially and uniformly coated with the wetting agent 20.
  • a coating agent 60 may be optionally applied.
  • the coating agents may acrylic latex paint, acrylic paint slurry and/or waste paint“sludge”; and/or various cement powders; and/or various pozzolanic materials or hardeners common to the concrete products industry or some
  • coated fly ash is dried 70 and ready for shipment.
  • additional non-hazardous materials may be incorporated into the original mixture and/or later applied as an added surface coating.
  • additives may include recycled products such as calcium carbonate, pulverized/granulated tire rubber, and /or glass beads or fragments.
  • ⁇ Portland cement and fly ash are placed into a vessel for mixing.
  • Waste water such as acrylic-containing waste water generated by the manufacture or processing of acrylic paint
  • Liquid silicate is added to the pasty slurry.
  • liquid silicate is sodium silicate.
  • recycled paint sludge may add in a last step.
  • An exemplary product has the following formulation by weight 13% fly ash, 12% Portland cement, 4% Recycled acrylic paint“sludge” , 56% Waste water containing acrylic, 15% Liquid sodium silicate.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Structural Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Dispersion Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Chemical & Material Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Curing Cements, Concrete, And Artificial Stone (AREA)
  • Processing Of Solid Wastes (AREA)

Abstract

Cette demande porte sur une cendre volante toxique totalement encapsulée et liée à l'intérieur d'un mélange durci qui empêche toute libération ou lixiviation ultérieure significative d'éléments toxiques dans l'environnement.
PCT/US2019/025833 2018-04-04 2019-04-04 Matériau synthétique durci non toxique contenant des particules toxiques et non toxiques encapsulées WO2019195577A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US201862652761P 2018-04-04 2018-04-04
US62/652,761 2018-04-04
US201862739272P 2018-09-30 2018-09-30
US62/739,272 2018-09-30

Publications (1)

Publication Number Publication Date
WO2019195577A1 true WO2019195577A1 (fr) 2019-10-10

Family

ID=68101429

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2019/025833 WO2019195577A1 (fr) 2018-04-04 2019-04-04 Matériau synthétique durci non toxique contenant des particules toxiques et non toxiques encapsulées

Country Status (1)

Country Link
WO (1) WO2019195577A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112300608A (zh) * 2020-10-30 2021-02-02 合肥工业大学 基于地质聚合物的水性无机涂料及其制备方法

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1944007A (en) * 1933-04-01 1934-01-16 Battelle Memorial Institute Light weight ceramic material and method of making the same
US3573940A (en) * 1969-01-31 1971-04-06 Us Interior Fly ash based preformed support structures
US4120735A (en) * 1974-10-25 1978-10-17 Gilbert Associates, Inc. Brick and method of making same
US8202362B2 (en) * 2006-07-28 2012-06-19 Red Lion Cement Technology Limited Geopolymeric cement based on fly ash and harmless to use
US20120172469A1 (en) * 2010-12-30 2012-07-05 United States Gypsum Company Lightweight foamed fly ash based binders and method

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1944007A (en) * 1933-04-01 1934-01-16 Battelle Memorial Institute Light weight ceramic material and method of making the same
US3573940A (en) * 1969-01-31 1971-04-06 Us Interior Fly ash based preformed support structures
US4120735A (en) * 1974-10-25 1978-10-17 Gilbert Associates, Inc. Brick and method of making same
US8202362B2 (en) * 2006-07-28 2012-06-19 Red Lion Cement Technology Limited Geopolymeric cement based on fly ash and harmless to use
US20120172469A1 (en) * 2010-12-30 2012-07-05 United States Gypsum Company Lightweight foamed fly ash based binders and method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112300608A (zh) * 2020-10-30 2021-02-02 合肥工业大学 基于地质聚合物的水性无机涂料及其制备方法

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