ES8507422A1 - Methods of producing a dry cement mixture and a free flowing ferrous sulphate hydrate product and products prepared by the methods. - Google Patents

Methods of producing a dry cement mixture and a free flowing ferrous sulphate hydrate product and products prepared by the methods.

Info

Publication number
ES8507422A1
ES8507422A1 ES533929A ES533929A ES8507422A1 ES 8507422 A1 ES8507422 A1 ES 8507422A1 ES 533929 A ES533929 A ES 533929A ES 533929 A ES533929 A ES 533929A ES 8507422 A1 ES8507422 A1 ES 8507422A1
Authority
ES
Spain
Prior art keywords
methods
ferrous sulphate
dry cement
producing
free flowing
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
Application number
ES533929A
Other languages
Spanish (es)
Other versions
ES533929A0 (en
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.)
Aalborg Portland AS
Original Assignee
Aalborg Portland AS
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 Aalborg Portland AS filed Critical Aalborg Portland AS
Publication of ES8507422A1 publication Critical patent/ES8507422A1/en
Publication of ES533929A0 publication Critical patent/ES533929A0/en
Granted 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
    • 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
    • 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
    • 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
    • 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Structural Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Curing Cements, Concrete, And Artificial Stone (AREA)
  • Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
  • Inorganic Compounds Of Heavy Metals (AREA)
  • Ceramic Products (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)

Abstract

A ferrous sulphate hydrate product for use as chromate reducing agent for dry cement is made from a technical or commercial grade ferrous sulphate heptahydrate by one or more treatments selected from moderate drying, powder dilution, physical absorption, and chemical absorption. In particular, the technical grade ferrous sulphate heptahydrate is mixed with fly ash or gypsum and subjected to a moderate drying at temperatures in the range of 20-60<o>C.
ES533929A 1982-11-17 1984-07-02 A METHOD FOR PREPARING A HYDRATED FERROUS SULPHATE PRODUCT Granted ES533929A0 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DK512582 1982-11-17

Publications (2)

Publication Number Publication Date
ES8507422A1 true ES8507422A1 (en) 1985-09-01
ES533929A0 ES533929A0 (en) 1985-09-01

Family

ID=8139654

Family Applications (2)

Application Number Title Priority Date Filing Date
ES527312A Expired ES8504646A1 (en) 1982-11-17 1983-11-16 Methods of producing a dry cement mixture and a free flowing ferrous sulphate hydrate product and products prepared by the methods.
ES533929A Granted ES533929A0 (en) 1982-11-17 1984-07-02 A METHOD FOR PREPARING A HYDRATED FERROUS SULPHATE PRODUCT

Family Applications Before (1)

Application Number Title Priority Date Filing Date
ES527312A Expired ES8504646A1 (en) 1982-11-17 1983-11-16 Methods of producing a dry cement mixture and a free flowing ferrous sulphate hydrate product and products prepared by the methods.

Country Status (9)

Country Link
EP (1) EP0125267A1 (en)
JP (1) JPS59501825A (en)
AU (1) AU2260183A (en)
DD (1) DD212727A5 (en)
ES (2) ES8504646A1 (en)
FI (1) FI842873A0 (en)
NO (1) NO842906L (en)
PL (1) PL244609A1 (en)
WO (1) WO1984001942A1 (en)

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1984002900A1 (en) * 1983-01-20 1984-08-02 Cementa Ab A method of reducing eczema-inducing chromium in cement by adding ferrous sulfate, an additive comprising ferrous sulfate and the use of the additive
US5268159A (en) * 1990-01-30 1993-12-07 Bayer Aktiengesellschaft Process for the production of storable, free-flowing hydrated ferrous sulfate
FR2690433B1 (en) * 1992-04-24 1994-07-08 Socadour FLUID HYDRATE FERROUS SULPHATE, AND PROCESS FOR FLUIDIZING POLYHYDRATE METAL SULFATES.
DE4321077A1 (en) 1993-06-24 1995-01-05 Dyckerhoff Ag Process for the depression of the allergy-causing effect of water-soluble Cr · V ·· I · in cements and / or preparations containing cement
FI100966B (en) * 1995-04-21 1998-03-31 Kemira Pigments Oy Process for the treatment of ferrous sulphate
SK282086B6 (en) 1999-10-12 2001-10-08 Pova�Sk� Cement�Re�, A. S. Manufacturing method for cement with lowered contents of chrome
DE10157129C2 (en) * 2001-11-21 2003-10-30 Ferro Duo Gmbh Process for the production of a hydraulic binder
DE10257879B3 (en) * 2002-12-11 2004-02-26 Dyckerhoff Ag Additive for normal cement or mortar, concrete or suspension containing cement contains reducing agent for hexavalent chromium compounds and very fine powder of hydraulic binder and/or latent hydraulic foundry sand
EP1440954B1 (en) * 2003-01-25 2005-04-27 Alexander Kehrmann Chromate reduced hydraulic binder
DE10332530A1 (en) † 2003-07-17 2005-02-10 Kerr-Mcgee Pigments Gmbh Process for reducing the soluble chromate content in cement and a preparation of cement and water-soluble metal sulphates
ES2266711T5 (en) † 2003-12-12 2016-07-14 Alexander Kehrmann Hydraulic binder
EP1580175A1 (en) * 2004-03-23 2005-09-28 Alexander Kehrmann Aggregate for concrete
DE102004026695A1 (en) * 2004-05-28 2006-01-26 Sachtleben Chemie Gmbh Free-flowing, agglomerated iron sulphate with support material, process for its preparation and its use
CZ300050B6 (en) * 2005-09-30 2009-01-21 Peringer@František Treatment process of handling properties of heptahydrated iron sulfate, particularly reduction of hygroscopic properties thereof
EP2055684A1 (en) * 2006-06-27 2009-05-06 Aditivos Del Cemento, S.L. Method of obtaining an additive for cement and additive thus achieved
ES2316283B1 (en) * 2007-05-31 2010-02-05 Fertisac, S.L. MANUFACTURING PROCEDURE OF GRANULATED FERROUS SULPHATE AS ADDITIVE FOR CEMETERIES.
EP2165976B8 (en) * 2007-07-02 2018-02-14 Fertinagro Biotech, S.L. Method of compactation of compositions based on ferrous sulphate heptahydrate and product obtained therefrom
GB201411204D0 (en) * 2014-06-24 2014-08-06 Tioxide Europe Ltd Process for producing ferrous sulphate
EP3372574B1 (en) * 2015-09-05 2022-08-31 Frantisek Peringer Stabilising ferrous sulphate for reducing chromium 6 in cement and for applications in animal food, horticulture, agriculture with improved properties and method to produce it
CN114644477B (en) * 2022-04-28 2023-05-30 四川省绵竹澳东水泥有限责任公司 Cement hexavalent chromium reducing agent and preparation method thereof

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2307270A (en) * 1940-08-04 1943-01-05 Mellon Inst Of Ind Res Building material
US3836676A (en) * 1971-06-29 1974-09-17 C Komakine Feedstuff for fowl,fish and domestic animals
DE2407203C3 (en) * 1974-02-15 1979-03-15 Kronos Titan-Gmbh, 5090 Leverkusen Process for the production of free-flowing iron OQ sulfate heptahydrate
IS1443B6 (en) * 1980-12-17 1990-12-14 Aalborg Portland A/S thurr cement mix
FR2507173B1 (en) * 1981-06-09 1985-07-05 Josse Marc PROCESS FOR FLUIDIZING IRON SULFATE AND SAID FLUIDIZED PRODUCT

Also Published As

Publication number Publication date
ES527312A0 (en) 1985-05-01
EP0125267A1 (en) 1984-11-21
NO842906L (en) 1984-07-16
PL244609A1 (en) 1985-01-30
ES8504646A1 (en) 1985-05-01
JPS59501825A (en) 1984-11-01
WO1984001942A1 (en) 1984-05-24
DD212727A5 (en) 1984-08-22
FI842873A (en) 1984-07-17
FI842873A0 (en) 1984-07-17
AU2260183A (en) 1984-06-04
ES533929A0 (en) 1985-09-01

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