FR2917401B1 - Additif de reduction du chrome hexavalent, son procede d'obtention ,et applications de cet additif notamment dans les produits a base de ciments. - Google Patents

Additif de reduction du chrome hexavalent, son procede d'obtention ,et applications de cet additif notamment dans les produits a base de ciments.

Info

Publication number
FR2917401B1
FR2917401B1 FR0704153A FR0704153A FR2917401B1 FR 2917401 B1 FR2917401 B1 FR 2917401B1 FR 0704153 A FR0704153 A FR 0704153A FR 0704153 A FR0704153 A FR 0704153A FR 2917401 B1 FR2917401 B1 FR 2917401B1
Authority
FR
France
Prior art keywords
obtaining
applications
same
cement products
reducing additive
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.)
Expired - Fee Related
Application number
FR0704153A
Other languages
English (en)
Other versions
FR2917401A1 (fr
Inventor
Gerard Lang
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to FR0704153A priority Critical patent/FR2917401B1/fr
Priority to EP08805983A priority patent/EP2162407A2/fr
Priority to PCT/FR2008/051048 priority patent/WO2009004219A2/fr
Publication of FR2917401A1 publication Critical patent/FR2917401A1/fr
Application granted granted Critical
Publication of FR2917401B1 publication Critical patent/FR2917401B1/fr
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • 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
    • C04B22/00—Use of inorganic materials as active ingredients for mortars, concrete or artificial stone, e.g. accelerators, shrinkage compensating agents
    • C04B22/08—Acids or salts thereof
    • C04B22/14—Acids or salts thereof containing sulfur in the anion, e.g. sulfides
    • C04B22/142—Sulfates
    • C04B22/149—Iron-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
    • C04B2103/00—Function or property of ingredients for mortars, concrete or artificial stone
    • C04B2103/52—Grinding aids; Additives added during grinding
    • 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)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Treatment Of Water By Oxidation Or Reduction (AREA)
  • Removal Of Specific Substances (AREA)
  • Curing Cements, Concrete, And Artificial Stone (AREA)
FR0704153A 2007-06-12 2007-06-12 Additif de reduction du chrome hexavalent, son procede d'obtention ,et applications de cet additif notamment dans les produits a base de ciments. Expired - Fee Related FR2917401B1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
FR0704153A FR2917401B1 (fr) 2007-06-12 2007-06-12 Additif de reduction du chrome hexavalent, son procede d'obtention ,et applications de cet additif notamment dans les produits a base de ciments.
EP08805983A EP2162407A2 (fr) 2007-06-12 2008-06-12 Additif de réduction du chrome hexavalent, son procédé d'obtention, et applications de cet additif notamment dans les produits à base de ciments.
PCT/FR2008/051048 WO2009004219A2 (fr) 2007-06-12 2008-06-12 Additif de réduction du chrome hexavalent, son procédé d'obtention, et applications de cet additif notamment dans les produits à base de ciments.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0704153A FR2917401B1 (fr) 2007-06-12 2007-06-12 Additif de reduction du chrome hexavalent, son procede d'obtention ,et applications de cet additif notamment dans les produits a base de ciments.

Publications (2)

Publication Number Publication Date
FR2917401A1 FR2917401A1 (fr) 2008-12-19
FR2917401B1 true FR2917401B1 (fr) 2010-08-13

Family

ID=39288097

Family Applications (1)

Application Number Title Priority Date Filing Date
FR0704153A Expired - Fee Related FR2917401B1 (fr) 2007-06-12 2007-06-12 Additif de reduction du chrome hexavalent, son procede d'obtention ,et applications de cet additif notamment dans les produits a base de ciments.

Country Status (3)

Country Link
EP (1) EP2162407A2 (fr)
FR (1) FR2917401B1 (fr)
WO (1) WO2009004219A2 (fr)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2953511B1 (fr) * 2009-12-04 2011-11-18 Lafarge Sa Protection d'un dispersant pendant un broyage
EP2462073A1 (fr) * 2009-08-05 2012-06-13 Lafarge Protection d'un dispersant pendant un broyage
CN102189093B (zh) * 2010-03-09 2015-02-04 刘杰 一种铬渣解毒方法以及解毒后铬渣的综合利用
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
RU2675016C1 (ru) * 2017-08-29 2018-12-14 Акционерное общество "Калужский научно-исследовательский институт телемеханических устройств" Способ восстановления хрома(+6) в жидких отходах гальванического производства
CN109652034A (zh) * 2018-12-18 2019-04-19 中国石油集团川庆钻探工程有限公司 一种维持高温及高含盐条件下水基钻井液pH值的方法
CN113480219A (zh) * 2021-07-15 2021-10-08 内蒙古宏尔高新材料科技有限公司 用于降低水泥中水溶性铬（ⅵ）的降铬剂及其制备方法
CN115043611B (zh) * 2021-09-16 2023-09-05 安徽成弘建新材料有限公司 一种中性抗高温液体水泥六价铬还原剂及其制备方法
CN113912317B (zh) * 2021-11-12 2022-10-25 哈尔滨三发新型节能建材有限责任公司 添加萘磺酸盐减水剂的水泥生产方法

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10335363B3 (de) * 2003-08-01 2005-04-07 Dr. Paul Lohmann Gmbh Kg Verwendung einer Lösung und Verfahren zur Herstellung eines Mittels zur Reduzierung von Chromanteilen in einer Zementverbindung sowie danach hergestelltes Mittel
US6872247B1 (en) * 2003-10-07 2005-03-29 W. R. Grace & Co.-Conn. Amine-based, hexavalent chromium reducing agents for cement
RU2351559C2 (ru) * 2003-11-21 2009-04-10 В.Р. Грейс Энд Ко.-Конн. Хроматный восстановитель сульфатной дисперсии
WO2005076858A2 (fr) * 2004-02-04 2005-08-25 W.R. Grace & Co.-Conn. Additif liquide pour produire du ciment par interbroyage
ATE485248T1 (de) * 2004-11-25 2010-11-15 Mapei Spa Zusatzmittel zur herstellung von chromatfreiem zement

Also Published As

Publication number Publication date
WO2009004219A3 (fr) 2009-02-12
WO2009004219A2 (fr) 2009-01-08
FR2917401A1 (fr) 2008-12-19
EP2162407A2 (fr) 2010-03-17

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Effective date: 20180228