EP0793625A1 - Portlandzementklinker und dessen verwendung - Google Patents
Portlandzementklinker und dessen verwendungInfo
- Publication number
- EP0793625A1 EP0793625A1 EP95936947A EP95936947A EP0793625A1 EP 0793625 A1 EP0793625 A1 EP 0793625A1 EP 95936947 A EP95936947 A EP 95936947A EP 95936947 A EP95936947 A EP 95936947A EP 0793625 A1 EP0793625 A1 EP 0793625A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- portland cement
- clinker
- cement clinker
- clinker according
- content
- 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- Withdrawn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
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
- C04B7/00—Hydraulic cements
- C04B7/02—Portland cement
Definitions
- the invention relates to a Portland cement clinker, its use and a Portland cement.
- Portland cement usually consists of Portland cement clinker and a sulfate carrier, usually gypsum.
- Portland cement clinker is made from a mixture of raw materials that is mainly calcium oxide (CaO)
- the cement which has been mixed and hardened with water, owes its strength primarily to the C 2 S clinker phase.
- Clinker is made by adding an F - containing compound
- Thermal energy is also required to grind the clinker electrical energy.
- the invention has for its object a
- Portland cement clinker with a C 3 S content between 40 and 80 wt .-% can be produced and can be fired at low temperatures of 1250 to 1350 ° if the
- the SO 3 content in the clinker should be between> 1.0 and ⁇ 3.0% by weight.
- additive eg CaF 2 or ZnO
- a lower firing temperature reduces the energy consumption in clinker production.
- the clinker may have higher values of free lime than clinker fired at higher temperatures, but even contents of up to 5.0% by weight of CaO do not lead to signs of driving when setting or to a loss of strength in a clinker (cement) according to the invention.
- This is obviously related to the increased reactivity of the CaO formed at low temperatures, which reacts to Ca (OH) 2 before the solidification process and is therefore harmless.
- Part of the calcium oxide required for clinker phase formation is introduced instead of calcium carbonate through the sulfate carrier, for example anhydrite (CaSO 4 ), which further reduces the energy requirement with the same lime standard.
- the total SO 3 content of the cement should be between 2 and 4% by weight.
- a cement clinker is preferred which has the following clinker phase components in% by weight:
- a preferred SO 3 content in the clinker can be given as 1.5 to 2.5% by weight, based on the clinker.
- the required SO 3 -containing component is preferably introduced in the form of a calcium sulfate carrier.
- a calcium sulfate carrier This can consist of gypsum or anhydrite.
- industrial residues containing sulfite and / or sulfate use such as an ash from a fluidized bed combustion and / or a stabilizer from the flue gas desulfurization.
- Adding a sulfite-containing product results in further fuel savings because the oxidation of sulfite to sulfate is an exothermic process.
- the corresponding calcium sulfate carrier can also be used to produce the finished Portland cement from the
- an advantageous embodiment proposes that the kinker be applied to a specific surface area of 2500 to 4000 cm 2 / g (according to Blaine)
- Firing temperature which leads to the highly porous clinker described.
- the improved grindability leads to energy savings when grinding, which can be up to 50%.
- harmful emissions for example CO 2 and NO ⁇ emissions, are reduced by lower firing temperatures.
- Industrial residues containing sulfur such as fluidized bed ash, can also be processed as part of the raw meal.
- Sample 1 describes a sulfobelitic cement which is C 3 S-free but has a proportion of 20% by weight
- Sample 2 describes a cement according to the invention which is free on
- Sample 3 relates to a cement according to DE 42 04 227 Cl.
- the proportions of the clinker phases, the SO 3 content in the clinker, the selected firing temperature and the total SO 3 content of the cement are given in the table below, as are the compressive strength values after 1, 3, 7, 28 and 365 days.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Cosmetics (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4441614A DE4441614C1 (de) | 1994-11-23 | 1994-11-23 | C¶4¶ A¶3¶ S freier Portlandzementklinker und dessen Verwendung |
DE4441614 | 1994-11-23 | ||
PCT/DE1995/001621 WO1996015996A1 (de) | 1994-11-23 | 1995-11-17 | Portlandzementklinker und dessen verwendung |
Publications (1)
Publication Number | Publication Date |
---|---|
EP0793625A1 true EP0793625A1 (de) | 1997-09-10 |
Family
ID=6533901
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP95936947A Withdrawn EP0793625A1 (de) | 1994-11-23 | 1995-11-17 | Portlandzementklinker und dessen verwendung |
Country Status (11)
Country | Link |
---|---|
US (1) | US5851282A (de) |
EP (1) | EP0793625A1 (de) |
JP (1) | JPH10512841A (de) |
CN (1) | CN1173165A (de) |
AU (1) | AU3922395A (de) |
CA (1) | CA2205839A1 (de) |
CZ (1) | CZ151997A3 (de) |
DE (1) | DE4441614C1 (de) |
HU (1) | HUT77272A (de) |
PL (1) | PL320346A1 (de) |
WO (1) | WO1996015996A1 (de) |
Families Citing this family (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19701291A1 (de) * | 1997-01-16 | 1998-07-23 | Walter Mayerhofer | Verfahren zur Herstellung von Portlandzement |
US6419741B1 (en) * | 1997-05-27 | 2002-07-16 | Sumitomo Osaka Cement Co., Ltd. | Cement clinker and cement containing the same |
CN1069092C (zh) * | 1998-03-02 | 2001-08-01 | 中国建筑材料科学研究院 | 一种高贝利特水泥熟料及其制备工艺 |
DE10164824B4 (de) * | 2001-04-04 | 2006-03-02 | Dyckerhoff Ag | Verwendung einer Masse aus Wasser und einer Bindemittelmischung im Feuerfestbereich |
MXPA02012235A (es) * | 2002-12-10 | 2004-07-16 | Cemex Trademarks Worldwide Ltd | Clinker y cemento blanco con alto contenido de azufre proveniente del coque de petroleo con alto contenido de azufre, usado como combustible. |
US7368010B2 (en) * | 2003-08-25 | 2008-05-06 | Mcgowan Kenneth A | Calcium aluminate clinker as a refractory aggregate with and without barium addition and use thereof |
US8216435B2 (en) * | 2004-06-07 | 2012-07-10 | Westmoreland Advanced Materials, Inc. | Calcium aluminate clinker as a refractory aggregate with and without barium addition and use thereof |
FR2892115B1 (fr) * | 2005-10-17 | 2008-06-20 | Vicat Sa | Liant hydraulique a faible emission de co2 |
CA2663798C (en) | 2006-09-21 | 2016-01-19 | Kenneth A. Mcgowan | Methods of use of calcium hexa aluminate refractory linings and/or chemical barriers in high alkali or alkaline environments |
JP5624722B2 (ja) * | 2006-10-24 | 2014-11-12 | 太平洋セメント株式会社 | セメントクリンカー及びセメント |
JP5800387B2 (ja) * | 2011-09-16 | 2015-10-28 | 株式会社デイ・シイ | 土質改良材 |
US8944165B2 (en) | 2013-01-11 | 2015-02-03 | Halliburton Energy Services, Inc. | Cement composition containing an additive of a pozzolan and a strength retrogression inhibitor |
JP6166153B2 (ja) * | 2013-11-08 | 2017-07-19 | 株式会社デイ・シイ | 地盤改良材 |
US10981831B2 (en) | 2017-09-21 | 2021-04-20 | Crown Products & Services, Inc. | Dry mix and concrete composition containing bed ash and related methods |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1498057A (en) * | 1975-04-17 | 1978-01-18 | Ass Portland Cement | Hydraulic cements |
US4036657A (en) * | 1975-07-23 | 1977-07-19 | Reagents Of The University Of California | High iron oxide hydraulic cement |
DE4204227C1 (en) * | 1992-02-13 | 1993-02-11 | Ivan Prof. Dr. 3380 Goslar De Odler | Portland cement clinker prepn. - by firing mixt. of calcium oxide, silica, aluminium@ and ferric oxide in presence of additive contg. sulphate and fluorine ions |
DK49592D0 (da) * | 1992-04-13 | 1992-04-13 | Aalborg Portland As | Cementkomposition |
-
1994
- 1994-11-23 DE DE4441614A patent/DE4441614C1/de not_active Expired - Fee Related
-
1995
- 1995-11-17 WO PCT/DE1995/001621 patent/WO1996015996A1/de not_active Application Discontinuation
- 1995-11-17 CZ CZ971519A patent/CZ151997A3/cs unknown
- 1995-11-17 PL PL95320346A patent/PL320346A1/xx unknown
- 1995-11-17 CA CA002205839A patent/CA2205839A1/en not_active Abandoned
- 1995-11-17 EP EP95936947A patent/EP0793625A1/de not_active Withdrawn
- 1995-11-17 US US08/849,641 patent/US5851282A/en not_active Expired - Fee Related
- 1995-11-17 CN CN95197415A patent/CN1173165A/zh active Pending
- 1995-11-17 JP JP8516446A patent/JPH10512841A/ja active Pending
- 1995-11-17 AU AU39223/95A patent/AU3922395A/en not_active Abandoned
- 1995-11-17 HU HU9701803A patent/HUT77272A/hu unknown
Non-Patent Citations (1)
Title |
---|
See references of WO9615996A1 * |
Also Published As
Publication number | Publication date |
---|---|
CN1173165A (zh) | 1998-02-11 |
WO1996015996A1 (de) | 1996-05-30 |
US5851282A (en) | 1998-12-22 |
CZ151997A3 (en) | 1997-09-17 |
AU3922395A (en) | 1996-06-17 |
DE4441614C1 (de) | 1996-04-04 |
PL320346A1 (en) | 1997-09-29 |
HUT77272A (hu) | 1998-03-02 |
JPH10512841A (ja) | 1998-12-08 |
CA2205839A1 (en) | 1996-05-30 |
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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 |
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17P | Request for examination filed |
Effective date: 19970528 |
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AK | Designated contracting states |
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