WO2007080286A3 - Coated iron sulphate particles and their use in the preparation of cements - Google Patents

Coated iron sulphate particles and their use in the preparation of cements Download PDF

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Publication number
WO2007080286A3
WO2007080286A3 PCT/FR2006/002759 FR2006002759W WO2007080286A3 WO 2007080286 A3 WO2007080286 A3 WO 2007080286A3 FR 2006002759 W FR2006002759 W FR 2006002759W WO 2007080286 A3 WO2007080286 A3 WO 2007080286A3
Authority
WO
WIPO (PCT)
Prior art keywords
cements
preparation
coated iron
iron sulphate
sulphate particles
Prior art date
Application number
PCT/FR2006/002759
Other languages
French (fr)
Other versions
WO2007080286A2 (en
Inventor
Vincent Morin
Helene Debegnac
Marc Biosa
Original Assignee
Lafarge Sa
Vincent Morin
Helene Debegnac
Marc Biosa
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 Lafarge Sa, Vincent Morin, Helene Debegnac, Marc Biosa filed Critical Lafarge Sa
Publication of WO2007080286A2 publication Critical patent/WO2007080286A2/en
Publication of WO2007080286A3 publication Critical patent/WO2007080286A3/en

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
    • 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
    • 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
    • C04B20/1018—Coating or impregnating with organic materials
    • C04B20/1029—Macromolecular compounds
    • C04B20/1048—Polysaccharides, e.g. cellulose, or derivatives thereof
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK  ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
    • C09C1/00—Treatment of specific inorganic materials other than fibrous fillers; Preparation of carbon black
    • C09C1/22—Compounds of iron
    • 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)
  • Chemical Kinetics & Catalysis (AREA)
  • Inorganic Chemistry (AREA)
  • Manufacturing Of Micro-Capsules (AREA)
  • Glanulating (AREA)
  • Curing Cements, Concrete, And Artificial Stone (AREA)

Abstract

The invention relates to a cement comprising coated particles, the said coated particles comprising: (a) a core comprising iron sulphate and/or tin sulphate and/or manganese sulphate; and (b) a shell comprising alginic acid or a derivative thereof.
PCT/FR2006/002759 2005-12-20 2006-12-15 Coated iron sulphate particles and their use in the preparation of cements WO2007080286A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0512932A FR2894956A1 (en) 2005-12-20 2005-12-20 Coated particles useful in the preparation of a concrete or a mortar, comprises a core comprising ferrous sulfate, tin sulfate and/or manganese sulfate and an envelop comprising a natural/synthetic polysaccharide
FR0512932 2005-12-20

Publications (2)

Publication Number Publication Date
WO2007080286A2 WO2007080286A2 (en) 2007-07-19
WO2007080286A3 true WO2007080286A3 (en) 2007-12-06

Family

ID=36395776

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/FR2006/002759 WO2007080286A2 (en) 2005-12-20 2006-12-15 Coated iron sulphate particles and their use in the preparation of cements

Country Status (2)

Country Link
FR (1) FR2894956A1 (en)
WO (1) WO2007080286A2 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1992595A1 (en) 2007-05-10 2008-11-19 Lafarge Process to reduce the amount of Cr (VI) in a cement-containing composition and a composition comprising cement and coated metallic sulphate particles
FR2917082A1 (en) * 2007-06-08 2008-12-12 Lafarge Sa Additive, useful to prepare cement based composition containing concrete, mortar or cement, comprises particles of iron (II) sulfate dry heptahydrate
FR2969144B1 (en) * 2010-12-15 2013-01-18 Chryso IRON ADJUVANT FOR REDUCING CHROME VI
ITMI20120764A1 (en) 2012-05-07 2013-11-08 Mapei Spa PORTLAND CEMENT ADDITIVE CONSISTING OF A NON-ENTIRELY REDUCING IN A POLYMER MATRIX
GB2502345B (en) * 2012-05-25 2017-03-15 Nexeon Ltd Composite material

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4572739A (en) * 1980-12-17 1986-02-25 Rasmussen Poul L Method for reducing chromate dermatitis
DE29613095U1 (en) * 1996-07-29 1996-10-02 Heidelberger Zement Ag Hydrophobicized ferrous sulfate and its use
EP1520843A1 (en) * 2003-09-18 2005-04-06 Alexander Kehrmann Hydraulic binder
US20050109243A1 (en) * 2003-11-21 2005-05-26 Jardine Leslie A. Sulfate dispersion chromate reducer

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4572739A (en) * 1980-12-17 1986-02-25 Rasmussen Poul L Method for reducing chromate dermatitis
DE29613095U1 (en) * 1996-07-29 1996-10-02 Heidelberger Zement Ag Hydrophobicized ferrous sulfate and its use
EP1520843A1 (en) * 2003-09-18 2005-04-06 Alexander Kehrmann Hydraulic binder
US20050109243A1 (en) * 2003-11-21 2005-05-26 Jardine Leslie A. Sulfate dispersion chromate reducer

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
"Die Bedeutung des Chromates in Zementen und zementhaltigen Zubereitungen", VEREIN DEUTSCHER ZEMENTWERKE E.V. FORSCHUNGSINSTITUT DER ZEMENTINDUSTRIE, 5 January 1999 (1999-01-05), XP002400742, Retrieved from the Internet <URL:http://www.wbcsd.org/web/projects/cement/tf3/VDZ-Sachstandsbericht-Chromat.pdf#search=%22bedeutung%20%20chromates%20zement%20vdz%22> [retrieved on 20060920] *
BAETZNER S: "WAYS OF ANALYZING IRON(II) SULPHATE HYDRATE IN RESPECT OF ITS CHROMATE-REDUCING ACTION IN CEMENT", ZKG INTERNATIONAL, BAUVERLAG BV., TERSLOH, DE, vol. 55, no. 7, 2002, pages 80 - 86,88, XP001116336, ISSN: 0949-0205 *

Also Published As

Publication number Publication date
WO2007080286A2 (en) 2007-07-19
FR2894956A1 (en) 2007-06-22

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