EP2364281A4 - ADDITIFS POUR LA RÉDUCTION DE Cr (VI) DANS LE CIMENT, LES LAITIERS, LES MORTIERS, LE BÉTON, LES EAUX USÉES ET LES DÉCHETS DE L INDUSTRIE MINIÈRE - Google Patents

ADDITIFS POUR LA RÉDUCTION DE Cr (VI) DANS LE CIMENT, LES LAITIERS, LES MORTIERS, LE BÉTON, LES EAUX USÉES ET LES DÉCHETS DE L INDUSTRIE MINIÈRE

Info

Publication number
EP2364281A4
EP2364281A4 EP09827001.0A EP09827001A EP2364281A4 EP 2364281 A4 EP2364281 A4 EP 2364281A4 EP 09827001 A EP09827001 A EP 09827001A EP 2364281 A4 EP2364281 A4 EP 2364281A4
Authority
EP
European Patent Office
Prior art keywords
mortars
slags
cement
additives
concrete
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Withdrawn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
EP09827001.0A
Other languages
German (de)
English (en)
Other versions
EP2364281A2 (fr
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
AFRISAM SOUTH AFRICA Pty Ltd
Original Assignee
AFRISAM (SOUTH AFRICA) Pty Ltd
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, AFRISAM SOUTH AFRICA Pty Ltd filed Critical AFRISAM (SOUTH AFRICA) Pty Ltd
Publication of EP2364281A2 publication Critical patent/EP2364281A2/fr
Publication of EP2364281A4 publication Critical patent/EP2364281A4/fr
Withdrawn legal-status Critical Current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)
EP09827001.0A 2008-11-11 2009-10-28 ADDITIFS POUR LA RÉDUCTION DE Cr (VI) DANS LE CIMENT, LES LAITIERS, LES MORTIERS, LE BÉTON, LES EAUX USÉES ET LES DÉCHETS DE L INDUSTRIE MINIÈRE Withdrawn EP2364281A4 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ZA200809602 2008-11-11
PCT/ZA2009/000094 WO2010057225A2 (fr) 2008-11-11 2009-10-28 Additifs pour la réduction de cr (vi) dans le ciment, les laitiers, les mortiers, le béton, les eaux usées et les déchets de l'industrie minière

Publications (2)

Publication Number Publication Date
EP2364281A2 EP2364281A2 (fr) 2011-09-14
EP2364281A4 true EP2364281A4 (fr) 2015-12-23

Family

ID=42170813

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09827001.0A Withdrawn EP2364281A4 (fr) 2008-11-11 2009-10-28 ADDITIFS POUR LA RÉDUCTION DE Cr (VI) DANS LE CIMENT, LES LAITIERS, LES MORTIERS, LE BÉTON, LES EAUX USÉES ET LES DÉCHETS DE L INDUSTRIE MINIÈRE

Country Status (2)

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

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104496251B (zh) * 2014-11-25 2017-03-22 中国建筑材料科学研究总院 一种液体六价铬还原剂及其制备方法、水泥及其制备方法
CN104876318B (zh) * 2015-05-29 2017-06-13 华中师范大学 一种二氧化锰/草酸物质还原去除六价铬的水处理方法
RU2641040C1 (ru) * 2016-09-20 2018-01-15 Общество с ограниченной ответственностью "ПКФ" Пластификатор для товарных бетонных смесей
CN107056124B (zh) * 2017-01-24 2019-07-05 福州大学 一种水泥助磨剂的制备方法
CN108355659A (zh) * 2018-03-14 2018-08-03 兰州交通大学 一种基于铁铝催化的金属载体材料及其制备方法
CN108911101B (zh) * 2018-06-25 2021-06-04 华中师范大学 一种基于球磨草酸化零价铁高效去除重金属离子的方法
CN109384299B (zh) * 2018-08-10 2022-02-01 华中师范大学 一种草酸钠改性零价铁去除水体中六价铬的方法
CN112456831B (zh) * 2020-10-13 2023-10-03 唐山冀东水泥外加剂有限责任公司 一种耐高温的水泥六价铬还原剂
CN114163163B (zh) * 2021-12-22 2022-11-29 湖南润攸科技发展有限公司 一种混凝土降铬剂

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1229434B (de) * 1960-09-27 1966-11-24 Mobil Oil Corp Sulfat-Calciumaluminat-Zement
DE1232861B (de) * 1964-08-24 1967-01-19 Grace W R & Co Nicht korrodierender Abbindebeschleuniger fuer hydraulischen Zement
US3429724A (en) * 1965-10-21 1969-02-25 Grace W R & Co Cement set retarding composition
EP0070482A2 (fr) * 1981-07-20 1983-01-26 Sika AG, vorm. Kaspar Winkler & Co. Procédé pour la protection contre la corrosion d'armatures en fer ou de câbles de tension dans les matériaux de construction
US4424074A (en) * 1982-08-24 1984-01-03 Diamond Shamrock Corporation Additives for cementitious compositions
JPH06183800A (ja) * 1992-12-14 1994-07-05 Denki Kagaku Kogyo Kk 塩素イオン捕集材
US5380441A (en) * 1993-09-15 1995-01-10 General Electric Company Removal of chromium from solution using mechanically agitated iron particles
JPH10236856A (ja) * 1997-02-26 1998-09-08 Nippon Solid Co Ltd セメント添加組成物及び該セメント添加組成物を 用いたセメントの固化方法
WO1999057076A1 (fr) * 1998-05-01 1999-11-11 Mbt Holding Ag Materiaux integres de marquage retroreflechissants
DE20311049U1 (de) * 2003-07-17 2003-09-18 Ferro Duo Gmbh Hydraulisches Bindemittel

Family Cites Families (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
AU2006280182A1 (en) * 2005-08-12 2007-02-22 W.R. Grace & Co.-Conn. Dosage efficient, storage stable compositions for reducing chromium (VI) in cement
ES2284371B2 (es) * 2006-01-27 2009-07-02 Sociedad Anonima Tudela Veguin Un producto aditivo para la reduccion del cromo (vi) en los cementos.
EP1886979B1 (fr) * 2006-08-11 2012-09-26 W.R. Grace & Co.-Conn. Composés en métal coordonnés pour réduire le chrome

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1229434B (de) * 1960-09-27 1966-11-24 Mobil Oil Corp Sulfat-Calciumaluminat-Zement
DE1232861B (de) * 1964-08-24 1967-01-19 Grace W R & Co Nicht korrodierender Abbindebeschleuniger fuer hydraulischen Zement
US3429724A (en) * 1965-10-21 1969-02-25 Grace W R & Co Cement set retarding composition
EP0070482A2 (fr) * 1981-07-20 1983-01-26 Sika AG, vorm. Kaspar Winkler & Co. Procédé pour la protection contre la corrosion d'armatures en fer ou de câbles de tension dans les matériaux de construction
US4424074A (en) * 1982-08-24 1984-01-03 Diamond Shamrock Corporation Additives for cementitious compositions
JPH06183800A (ja) * 1992-12-14 1994-07-05 Denki Kagaku Kogyo Kk 塩素イオン捕集材
US5380441A (en) * 1993-09-15 1995-01-10 General Electric Company Removal of chromium from solution using mechanically agitated iron particles
JPH10236856A (ja) * 1997-02-26 1998-09-08 Nippon Solid Co Ltd セメント添加組成物及び該セメント添加組成物を 用いたセメントの固化方法
WO1999057076A1 (fr) * 1998-05-01 1999-11-11 Mbt Holding Ag Materiaux integres de marquage retroreflechissants
DE20311049U1 (de) * 2003-07-17 2003-09-18 Ferro Duo Gmbh Hydraulisches Bindemittel

Also Published As

Publication number Publication date
WO2010057225A3 (fr) 2011-04-21
EP2364281A2 (fr) 2011-09-14
WO2010057225A2 (fr) 2010-05-20

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