EP2364281A4 - 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 WASTEInfo
- 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- Withdrawn
Links
- 239000000654 additive Substances 0.000 title 1
- 239000004568 cement Substances 0.000 title 1
- 239000004567 concrete Substances 0.000 title 1
- 238000005065 mining Methods 0.000 title 1
- 239000004570 mortar (masonry) Substances 0.000 title 1
- 239000002893 slag Substances 0.000 title 1
- 239000002699 waste material Substances 0.000 title 1
- 239000002351 wastewater Substances 0.000 title 1
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)
- Hydrology & Water Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Inorganic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Processing Of Solid Wastes (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ZA200809602 | 2008-11-11 | ||
PCT/ZA2009/000094 WO2010057225A2 (en) | 2008-11-11 | 2009-10-28 | ADDITIVES FOR Cr (VI) REDUCTION IN CEMENT, SLAGS, MORTARS, CONCRETE, WASTE WATER AND MINING INDUSTRY WASTE |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2364281A2 EP2364281A2 (en) | 2011-09-14 |
EP2364281A4 true EP2364281A4 (en) | 2015-12-23 |
Family
ID=42170813
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP09827001.0A Withdrawn EP2364281A4 (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) |
Families Citing this family (9)
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 |
RU2641040C1 (en) * | 2016-09-20 | 2018-01-15 | Общество с ограниченной ответственностью "ПКФ" | Plasticiser for ready-mixed concrete mixtures |
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 |
CN108911101B (en) * | 2018-06-25 | 2021-06-04 | 华中师范大学 | Method for efficiently removing heavy metal ions based on ball milling oxalic acid zero-valent iron |
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 (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1229434B (en) * | 1960-09-27 | 1966-11-24 | Mobil Oil Corp | Sulphate-calcium aluminate cement |
DE1232861B (en) * | 1964-08-24 | 1967-01-19 | 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 |
EP0070482A2 (en) * | 1981-07-20 | 1983-01-26 | Sika AG, vorm. Kaspar Winkler & Co. | Process for corrosion-protection of reinforcing iron elements or tension cables in building parts |
US4424074A (en) * | 1982-08-24 | 1984-01-03 | Diamond Shamrock Corporation | Additives for cementitious compositions |
JPH06183800A (en) * | 1992-12-14 | 1994-07-05 | Denki Kagaku Kogyo Kk | Chlorine ion capturing 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 |
WO1999057076A1 (en) * | 1998-05-01 | 1999-11-11 | Mbt Holding Ag | Integrated retroreflective marking materials |
DE20311049U1 (en) * | 2003-07-17 | 2003-09-18 | Ferro Duo GmbH, 47053 Duisburg | Hydraulic binder |
Family Cites Families (5)
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 |
KR20080044246A (en) * | 2005-08-12 | 2008-05-20 | 더블유.알. 그레이스 앤드 캄파니-콘. | Dosage efficient, storage stable compositions for reducing chromium(vi) in cement |
ES2284371B2 (en) * | 2006-01-27 | 2009-07-02 | Sociedad Anonima Tudela Veguin | AN ADDITIVE PRODUCT FOR CHROME REDUCTION (VI) IN THE CEMENTS. |
PL1886979T3 (en) * | 2006-08-11 | 2013-02-28 | Gcp Applied Tech Inc | Coordinated Metal Compounds for reducing chromium |
-
2009
- 2009-10-28 WO PCT/ZA2009/000094 patent/WO2010057225A2/en active Application Filing
- 2009-10-28 EP EP09827001.0A patent/EP2364281A4/en not_active Withdrawn
Patent Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1229434B (en) * | 1960-09-27 | 1966-11-24 | Mobil Oil Corp | Sulphate-calcium aluminate cement |
DE1232861B (en) * | 1964-08-24 | 1967-01-19 | 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 |
EP0070482A2 (en) * | 1981-07-20 | 1983-01-26 | Sika AG, vorm. Kaspar Winkler & Co. | Process for corrosion-protection of reinforcing iron elements or tension cables in building parts |
US4424074A (en) * | 1982-08-24 | 1984-01-03 | Diamond Shamrock Corporation | Additives for cementitious compositions |
JPH06183800A (en) * | 1992-12-14 | 1994-07-05 | Denki Kagaku Kogyo Kk | Chlorine ion capturing 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 |
WO1999057076A1 (en) * | 1998-05-01 | 1999-11-11 | Mbt Holding Ag | Integrated retroreflective marking materials |
DE20311049U1 (en) * | 2003-07-17 | 2003-09-18 | Ferro Duo GmbH, 47053 Duisburg | Hydraulic binder |
Also Published As
Publication number | Publication date |
---|---|
EP2364281A2 (en) | 2011-09-14 |
WO2010057225A3 (en) | 2011-04-21 |
WO2010057225A2 (en) | 2010-05-20 |
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Legal Events
Date | Code | Title | Description |
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PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
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17P | Request for examination filed |
Effective date: 20110510 |
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AK | Designated contracting states |
Kind code of ref document: A2 Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK SM TR |
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AX | Request for extension of the european patent |
Extension state: AL BA RS |
|
A4 | Supplementary search report drawn up and despatched |
Effective date: 20151119 |
|
RIC1 | Information provided on ipc code assigned before grant |
Ipc: C04B 22/04 20060101AFI20151113BHEP Ipc: C02F 1/70 20060101ALI20151113BHEP Ipc: C04B 22/08 20060101ALI20151113BHEP Ipc: C04B 24/04 20060101ALI20151113BHEP Ipc: C04B 22/06 20060101ALI20151113BHEP Ipc: C04B 5/06 20060101ALI20151113BHEP |
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STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
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18D | Application deemed to be withdrawn |
Effective date: 20160621 |