[go: up one dir, main page]

WO2010057225A3 - ADDITIVES FOR Cr (VI) REDUCTION IN CEMENT, SLAGS, MORTARS, CONCRETE, WASTE WATER AND MINING INDUSTRY WASTE - Google Patents

ADDITIVES FOR Cr (VI) REDUCTION IN CEMENT, SLAGS, MORTARS, CONCRETE, WASTE WATER AND MINING INDUSTRY WASTE Download PDF

Info

Publication number
WO2010057225A3
WO2010057225A3 PCT/ZA2009/000094 ZA2009000094W WO2010057225A3 WO 2010057225 A3 WO2010057225 A3 WO 2010057225A3 ZA 2009000094 W ZA2009000094 W ZA 2009000094W WO 2010057225 A3 WO2010057225 A3 WO 2010057225A3
Authority
WO
WIPO (PCT)
Prior art keywords
cement
slags
reduction
mortars
additives
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/ZA2009/000094
Other languages
French (fr)
Other versions
WO2010057225A2 (en
Inventor
Jean-Bosco Kazirukanyo
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.)
AFRISAM (SOUTH AFRICA) Pty Ltd
Original Assignee
AFRISAM (SOUTH AFRICA) Pty Ltd
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 AFRISAM (SOUTH AFRICA) Pty Ltd filed Critical AFRISAM (SOUTH AFRICA) Pty Ltd
Priority to EP09827001.0A priority Critical patent/EP2364281A4/en
Publication of WO2010057225A2 publication Critical patent/WO2010057225A2/en
Publication of WO2010057225A3 publication Critical patent/WO2010057225A3/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • 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
    • C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
    • C04B40/0028—Aspects relating to the mixing step of the mortar preparation
    • C04B40/0039—Premixtures of ingredients
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
    • C02F1/5272—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using specific organic precipitants
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/70—Treatment of water, waste water, or sewage by reduction
    • C02F1/705—Reduction by 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
    • 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
    • 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 
    • C04B5/06—Ingredients, other than water, added to the molten slag or to the granulating medium or before remelting; Treatment with gases or gas generating compounds, e.g. to obtain porous slag
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00—Nature of the contaminant
    • C02F2101/10—Inorganic compounds
    • C02F2101/20—Heavy metals or heavy metal compounds
    • C02F2101/22—Chromium or chromium compounds, e.g. chromates
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
    • C02F2103/06—Contaminated groundwater or leachate
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
    • C02F2103/10—Nature of the water, waste water, sewage or sludge to be treated from quarries or from mining activities
    • 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
    • C04B2111/10—Compositions or ingredients thereof characterised by the absence or the very low content of a specific material
    • C04B2111/1075—Chromium-free or very low chromium-content materials
    • C04B2111/1081—Chromium VI, e.g. for avoiding chromium eczema

Landscapes

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

Abstract

The invention provides a Cr (VI) or Cr6+ reduction and/or immobilization additive compositions for use in cement, cement based products, and in slags which composition includes one or more chemical compounds containing the element N in the form of simple or complex anions and/or metallic Zn powder, Zn salts, and/or Zn compounds.
PCT/ZA2009/000094 2008-11-11 2009-10-28 ADDITIVES FOR Cr (VI) REDUCTION IN CEMENT, SLAGS, MORTARS, CONCRETE, WASTE WATER AND MINING INDUSTRY WASTE Ceased WO2010057225A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP09827001.0A EP2364281A4 (en) 2008-11-11 2009-10-28 ADDITIVES FOR Cr (VI) REDUCTION IN CEMENT, SLAGS, MORTARS, CONCRETE, WASTE WATER AND MINING INDUSTRY WASTE

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ZA2008/9602 2008-11-11
ZA200809602 2008-11-11

Publications (2)

Publication Number Publication Date
WO2010057225A2 WO2010057225A2 (en) 2010-05-20
WO2010057225A3 true WO2010057225A3 (en) 2011-04-21

Family

ID=42170813

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/ZA2009/000094 Ceased WO2010057225A2 (en) 2008-11-11 2009-10-28 ADDITIVES FOR Cr (VI) REDUCTION IN CEMENT, SLAGS, MORTARS, CONCRETE, WASTE WATER AND MINING INDUSTRY WASTE

Country Status (2)

Country Link
EP (1) EP2364281A4 (en)
WO (1) WO2010057225A2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2641040C1 (en) * 2016-09-20 2018-01-15 Общество с ограниченной ответственностью "ПКФ" Plasticiser for ready-mixed concrete mixtures
CN108911101A (en) * 2018-06-25 2018-11-30 华中师范大学 A method of based on the efficient heavy-metal ion removal of ball milling oxalic acid Zero-valent Iron

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104496251B (en) * 2014-11-25 2017-03-22 中国建筑材料科学研究总院 Liquid hexavalent chromium reducing agent and preparation method thereof, cement and preparation method thereof
CN104876318B (en) * 2015-05-29 2017-06-13 华中师范大学 A kind of method for treating water of manganese dioxide/oxalic acid material reduction removal Cr VI
CN107056124B (en) * 2017-01-24 2019-07-05 福州大学 A kind of preparation method of cement grinding aid
CN108355659A (en) * 2018-03-14 2018-08-03 兰州交通大学 A kind of metal carrier material and preparation method thereof based on the catalysis of iron aluminium
CN109384299B (en) * 2018-08-10 2022-02-01 华中师范大学 Method for removing hexavalent chromium in water body by using sodium oxalate modified zero-valent iron
CN112456831B (en) * 2020-10-13 2023-10-03 唐山冀东水泥外加剂有限责任公司 High-temperature-resistant cement hexavalent chromium reducing agent
CN114163163B (en) * 2021-12-22 2022-11-29 湖南润攸科技发展有限公司 Concrete chromium reducing agent

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3819051A (en) * 1972-08-31 1974-06-25 Amchem Prod Process for treating wastes containing chromates and/or complex iron cyanides
US4268486A (en) * 1979-07-02 1981-05-19 Olin Corporation Selective chromate removal from a chlorate solution
WO2007021617A2 (en) * 2005-08-12 2007-02-22 W.R. Grace & Co.-Conn. Dosage efficient, storage stable compositions for reducing chromium (vi) in cement
EP1813583A1 (en) * 2006-01-27 2007-08-01 Sociedad Anónima Tudela Veguin An additive product for the reduction of chromium (VI) in cements
EP1886979A2 (en) * 2006-08-11 2008-02-13 W.R. Grace & Co.-Conn. Coordinated Metal Compounds for reducing chromium

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1229434B (en) * 1960-09-27 1966-11-24 Mobil Oil Corp Sulphate-calcium aluminate cement
DE1232861C2 (en) * 1964-08-24 1973-02-22 Grace W R & Co Non-corrosive setting accelerator for hydraulic cement
US3429724A (en) * 1965-10-21 1969-02-25 Grace W R & Co Cement set retarding composition
DE3133882A1 (en) * 1981-07-20 1983-02-03 Sika AG, vorm. Kaspar Winkler & Co., 8048 Zürich PROCESS FOR CORROSION PROTECTION OF ARMORING IRON, TENSION CABLES AND THE LIKE IN COMPONENTS
US4424074A (en) * 1982-08-24 1984-01-03 Diamond Shamrock Corporation Additives for cementitious compositions
JP3301553B2 (en) * 1992-12-14 2002-07-15 電気化学工業株式会社 Chloride ion collecting material
US5380441A (en) * 1993-09-15 1995-01-10 General Electric Company Removal of chromium from solution using mechanically agitated iron particles
JPH10236856A (en) * 1997-02-26 1998-09-08 Nippon Solid Co Ltd Cement additive composition, and cement solidifying method using the cement additive composition
JP2002513820A (en) * 1998-05-01 2002-05-14 エムビーティー ホールディング アーゲー Integrated marking material
DE20311049U1 (en) * 2003-07-17 2003-09-18 Ferro Duo GmbH, 47053 Duisburg Hydraulic binder

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3819051A (en) * 1972-08-31 1974-06-25 Amchem Prod Process for treating wastes containing chromates and/or complex iron cyanides
US4268486A (en) * 1979-07-02 1981-05-19 Olin Corporation Selective chromate removal from a chlorate solution
WO2007021617A2 (en) * 2005-08-12 2007-02-22 W.R. Grace & Co.-Conn. Dosage efficient, storage stable compositions for reducing chromium (vi) in cement
EP1813583A1 (en) * 2006-01-27 2007-08-01 Sociedad Anónima Tudela Veguin An additive product for the reduction of chromium (VI) in cements
EP1886979A2 (en) * 2006-08-11 2008-02-13 W.R. Grace & Co.-Conn. Coordinated Metal Compounds for reducing chromium

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP2364281A4 *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2641040C1 (en) * 2016-09-20 2018-01-15 Общество с ограниченной ответственностью "ПКФ" Plasticiser for ready-mixed concrete mixtures
CN108911101A (en) * 2018-06-25 2018-11-30 华中师范大学 A method of based on the efficient heavy-metal ion removal of ball milling oxalic acid Zero-valent Iron
CN108911101B (en) * 2018-06-25 2021-06-04 华中师范大学 A method for efficient removal of heavy metal ions based on ball milling of oxalated zero-valent iron

Also Published As

Publication number Publication date
WO2010057225A2 (en) 2010-05-20
EP2364281A2 (en) 2011-09-14
EP2364281A4 (en) 2015-12-23

Similar Documents

Publication Publication Date Title
WO2010057225A3 (en) ADDITIVES FOR Cr (VI) REDUCTION IN CEMENT, SLAGS, MORTARS, CONCRETE, WASTE WATER AND MINING INDUSTRY WASTE
SG2013096268A (en) Gypsum-containing construction material compounds
TW200801095A (en) Inorganic-organic nanocomposite
WO2008154374A3 (en) Compositions suitable for use as joint compounds and related methods
MY145807A (en) Thickening composition improved in viscosity development
SI1896364T1 (en) Pulverulent lime composition, method for the production thereof, and use of the same
TWI366591B (en) Slurry composition for chemical mechanical polishing of metal and polishing method using the same
GB2453304A (en) Hydraulic cements comprising carbonate compounds compositions
WO2010006173A3 (en) Mineral amino acid polysaccharide complex
MX2009011622A (en) Water soluble magnesium compounds as cleaning agents and methods of using them.
WO2007033489A3 (en) Slurry compositions and methods for making same
MX2011007705A (en) Methods for controlling depolymerization of polymer compositions.
TW201129659A (en) Composition and method for polishing bulk silicon
ZA200908269B (en) Compositions,methods and devices for control and clean-up of hazardous spills
MX2012003181A (en) Additive for mineral binding agents.
MX351249B (en) Improvements in or relating to cementitious compositions.
WO2014052182A8 (en) Methods and compositions for treating a subterranean formation with salt-tolerant cement slurries
WO2008129242A3 (en) Water based intumescent coating formulation especially suitable for structural steel components in civil engineering
WO2013052952A3 (en) Cement additives and related methods of use
MX2011013885A (en) Feed block and method and apparatus for manufacturing of the feed block.
WO2008021966A3 (en) Coordinated metal compounds for reducing chromium
WO2006131659A3 (en) Fast binder compositions for concrete parts and works containing a calcium salt
TW200833753A (en) Polymeric coupling agents
AU2011341729A8 (en) Remedial composition and treatment methods
WO2013128270A3 (en) Process for the preparation of cement, mortars, concrete compositions containing a calcium carbonate - based filler treated with an ultrafine filler and a superplasticizer, compositions and cement products obtained and their applications

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: 09827001

Country of ref document: EP

Kind code of ref document: A2

REEP Request for entry into the european phase

Ref document number: 2009827001

Country of ref document: EP

WWE Wipo information: entry into national phase

Ref document number: 2009827001

Country of ref document: EP

NENP Non-entry into the national phase

Ref country code: DE