CN1030740A - High-iron silicate cement clinker and production method thereof - Google Patents
High-iron silicate cement clinker and production method thereof Download PDFInfo
- Publication number
- CN1030740A CN1030740A CN88104586A CN88104586A CN1030740A CN 1030740 A CN1030740 A CN 1030740A CN 88104586 A CN88104586 A CN 88104586A CN 88104586 A CN88104586 A CN 88104586A CN 1030740 A CN1030740 A CN 1030740A
- Authority
- CN
- China
- Prior art keywords
- cement
- cement clinker
- production method
- caf
- composition
- 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.)
- Pending
Links
Classifications
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/10—Production of cement, e.g. improving or optimising the production methods; Cement grinding
Landscapes
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
High-iron silicate cement clinker and method thereof on the production basis of ordinary portland cement clinker, adopt special proportion scheme, select suitable mineralizer, can produce with C
3S and C
4AF is for leading and have concurrently The addition of C
4AS and C
11A
7CaF
2The cement clinker of strong mineralogical composition early, this production method, in the stove calcining stable, be difficult for the knot bulk, produce easy to control, heat consumption of clinker decline 10-15%.Output can improve 10-25%.By its early strength height of short-term strength cement that this grog is made, stable long-term strength, wear resistance is good, and anti-sulphates corrosive is good.
Description
The invention belongs to field of cement production, particularly high-iron silicate cement and production method thereof.
The external original production of high-iron portland cement is as Fei Larui (Ferrari) cement, its C
3S+C
4The very high about 75-95% of AF content but because its later strength is not high, sometimes intensity also descend, retraction, main is easily sticking limit in calcination process, knot bulk operations complexity is not so now produce.The production of normal silicate short-term strength cement is had relatively high expectations to raw material, ature of coal, the firing temperature height, and calcination time is long, and the production process complexity is difficult to control, and corresponding production cost height is unsuitable for widespread use production.Mix the ordinary Portland cement production of mineralizer, though production process is simple, can reduce hear rate, improve early by force slightly, but total intensity level is still undesirable, in case and C in the cement clinker
4A S+C
11A
7CaF
2Content increases, and then can produce anxious coagulation phenomena.
At the major defect of above-mentioned cement and production method, the present invention proposes a kind of high-iron silicate cement clinker and production method thereof.
Technical solution of the present invention is: with C
3S+C
4AF also contains C in the high-iron portland cement grog of leading
4A S and C
11A
7Two kinds of mineralogical compositions of CaF, the clinker mineral composition is (weight %).
C
3S 60-75%
C
2S 0-3%
C
4AF 15-25%
C
3A 0-1.5%
C
4A S+C
11A
7CaF
25-20%
Cement Production method of the present invention is: adopt the production method of former high-iron portland cement, when batching.Mix composite mineralizer, its firing temperature is 1280 ℃-1350 ℃.
CaO, SiO in the raw material
2, Al
2O
3, Fe
2O
3And the content (weight %) of composite mineralizer is:
CaO 41-50.2%， SiO
210-16.0%，
Al
2O
32.0-5.5%， Fe
2O
33.2-9.5%，
The composition of composite mineralizer and the weight percent of batching are as follows:
CaSO
40-5.5%
BaSO
40-7%
CaF
20-4%
CaCl
20-4.5%
Its composition of the composite mineralizer that mixes contains more than one of mentioned component at least.Total amount is the 2-8% of batching per-cent.
Owing to contain C in the cement clinker of the present invention
4A S and C
11A
7CaF
2Two kinds of mineralogical compositions, and these two kinds of mineralogical compositions epistasis morning can be comparatively outstanding, it is very fast that this cement early strength that makes grog of the present invention make improves, and intensity can reach existing short-term strength cement strength criterion requirement in three days in one day sometimes.Aspect later strength, in hydration process, early strong mineral C
4A S has formed ettringite during aquation, and C
3The C-S-H gel that S and water reaction back generate, microcosmic water mudrock structure with the strong mineral hydrated product morning of this ettringite and so on, constituted more intact skeleton structure, this development to the cement later strength provides better prerequisite, make the stable long-term strength of the cement that cement clinker of the present invention is made rise, and overcome anxious coagulation phenomena.
By mixing composite mineralizer when the former high-iron portland cement production batching, the first, firing temperature is reduced, liquidus temperature descends, and has promoted C
3S, C
4The generation of AF has overcome the generation of phenomenons such as knot bulk, sticking limit in the kiln, makes production process be easy to control.The second, because calcining temperature reduces, make main intensity mineral C
3S forms at a lower temperature, and wherein part is by the middle transition phase decomposition, so activity is bigger, and this makes, and grog of the present invention is early stage, later strength is bringd into play.The 3rd, most importantly make the C that has produced suitable content in the grog by mixing of composite mineralizer
4A S and C
11A
7CaF
2Two kinds morning strong mineralogical composition, thereby the cement early strength that makes cement clinker of the present invention make is good, stable long-term strength.In this sense, mix composite mineralizer, be not only in order to work to promote the raw material mineralising, but obtain in the grog to make its strength property that certain mineralogical composition of very big raising is arranged in order to make.
High-iron silicate cement and Fei Larui cement, the mineralogical composition and the product performance of common silicic acid short-term strength cement relatively see the following form.
The advantage of short-term strength cement of the present invention is:
1, because cement clinker has increased C
4A S and C
11A
7CaF
2Two kinds morning strong mineralogical composition, therefore improved the early strength of cement clinker greatly, also make stable long-term strength increase simultaneously, overcome the low defective of " Fei Larui " cement later strength.
2, owing to contain a large amount of C in the cement of the present invention
4AF makes its wear resisting property good, therefore can be used as highway cement, wear-resisting cement.
3, owing to C in the cement of the present invention
3The A mineral are less to be almost 0, makes sulphate-corrosion resistance strong, so can use in some chemical industry and coast defence engineering.
And adopt its advantage of method for production of cement of the present invention to be:
1, owing to can adopt the mode of production of ordinary Portland cement to produce early-strength type cement aborning, simplified production process, and can correspondingly relax requirements such as material composition, atures of coal, production cost is low.
2, owing to mixed the corresponding firing temperature that reduced of mineralizer when batching, calcinating system is stable in the stove, unit heat consumption decline 10-15%.
3, after ordinary shaft kiln adopted the inventive method, cement clinker quality obviously improved, and 28 days intensity of grog reaches as high as 630Kg/cm
2, shaft kiln production is operated all easy to controlly, and output can improve 10-25%.
The embodiment of the invention
Method produced according to the invention, production cement clinker of the present invention on ordinary shaft kiln adds CaSO
4, CaF
2Two kinds of composite mineralizers.
Material composition and composition of raw materials see the following form.
Go into kiln raw material CaCO
3The titration value qualification rate is 45%, adopts complete black meal, shallow flameless calcination, and 1330 ℃ of firing temperatures, going into kiln raw material loss on ignition is about 33%.Be fired into grog.
For the grog that three kinds of prescriptions are made, the physicals of cement is as follows:
Grog, cement physical properties table
For 1
#The grog that is fired into of prescription, detect its mineral composition through X-ray diffraction analysis and petrofacies and be:
| Mineralogical composition | C 3S. | C 2S | C 3A | C 4AF | C 4AS+C 11A 7CaF 2 |
| % | 67.60 | 1.8 | 1.09 | 20.41 | 8.70 |
The high-iron silicate cement of making, standard consistency 0.25, the 0.08m/m sieve tails over 6.0%,
Cement setting time initial set 2 hours 05 minute
Final set 3 hours 17 minutes
Stability qualified (boiling test)
Claims (4)
1, high-iron portland cement grog, mineralogical composition is with C
3S+C
4AF is main, it is characterized in that: contain C in the grog
4A S+C
11A
7CaF
2Mineralogical composition, clinker mineral composition are (weight %)
C
3S 60-75%
C
2S 0-3%
C
4AF 15-25%
C
3A 0-1.5%
C
4A S+C
11A
7CaF
25-20%。
2, the production method of high-iron portland cement is characterized in that:
A, the time mix composite mineralizer in batching,
B, firing temperature are 1280-1350 ℃.
3,, it is characterized in that CaO in the raw material, SiO according to the production method of claim 2
2, Al
2O
3, Fe
2O
3And the content (weight %) of composite mineralizer is
CaO 41-50.2%， SiO
210-16.0%，
Al
2O
32.0-5.5%， Fe
2O
33.2-9.5%，
Composite mineralizer 2-8%.
4, according to the production method of claim 2 and 3, it is characterized in that:
The composition of a, composite mineralizer and ingredients by weight per-cent are as follows:
CaSO
40-5.5%
BaSO
40-7%
CaF
20-4%
CaCl
20-4.5%
B, its composition of composite mineralizer that mixes contain above-mentioned more than one at least.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN88104586A CN1030740A (en) | 1988-07-19 | 1988-07-19 | High-iron silicate cement clinker and production method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN88104586A CN1030740A (en) | 1988-07-19 | 1988-07-19 | High-iron silicate cement clinker and production method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1030740A true CN1030740A (en) | 1989-02-01 |
Family
ID=4833059
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN88104586A Pending CN1030740A (en) | 1988-07-19 | 1988-07-19 | High-iron silicate cement clinker and production method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1030740A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102432205A (en) * | 2010-09-28 | 2012-05-02 | 国立大学法人东京工业大学 | High active cement clinker, high active cement and high-early-strength cement composition |
| CN103833245A (en) * | 2014-02-23 | 2014-06-04 | 桂林理工大学 | Method for preparing high-iron cement by utilizing red mud |
| CN115259701A (en) * | 2022-07-18 | 2022-11-01 | 济南大学 | High-sulfur-resistance portland cement clinker, cement and application thereof |
-
1988
- 1988-07-19 CN CN88104586A patent/CN1030740A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102432205A (en) * | 2010-09-28 | 2012-05-02 | 国立大学法人东京工业大学 | High active cement clinker, high active cement and high-early-strength cement composition |
| CN102432205B (en) * | 2010-09-28 | 2015-03-04 | 国立大学法人东京工业大学 | High active cement clinker, high active cement and high-early-strength cement composition |
| CN103833245A (en) * | 2014-02-23 | 2014-06-04 | 桂林理工大学 | Method for preparing high-iron cement by utilizing red mud |
| CN115259701A (en) * | 2022-07-18 | 2022-11-01 | 济南大学 | High-sulfur-resistance portland cement clinker, cement and application thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4042408A (en) | Hydraulic cements | |
| CA1171102A (en) | High strength aggregate for concrete | |
| CN103496867B (en) | A kind of calcium sulphoaluminate or calcium sulphoaluminate-calcium oxide cement expansive material and preparation method thereof and application | |
| EP0314351A1 (en) | Cementitious composition | |
| CN115677243B (en) | Preparation method of low-carbon cement clinker | |
| CN1513793A (en) | High sulfur content clinker and white cement of high sulfur content petroleum coke derived and used as fuel | |
| CN1193613A (en) | Cement clinker and preparation thereof | |
| CN114716164A (en) | Sulphoaluminate cement with phosphogypsum as main raw material and preparation method thereof | |
| CN1173165A (en) | Portland cement clinker and use thereof | |
| CN86103649A (en) | The composition and the manufacture method of A Lite calcium sulphoaluminate cement | |
| CN1030740A (en) | High-iron silicate cement clinker and production method thereof | |
| CN1186899A (en) | Mine filling cementing agent | |
| CN1226219C (en) | Alite-barium calcium sulfur aluminate cement | |
| CN1065849A (en) | Steel slag cement | |
| CN1213654A (en) | Prodn. of composite portland cement by utilizing industrial waste residue | |
| CN1733641A (en) | Silicate cement and its production method | |
| CN1208277C (en) | Method for preparing red cement using activated red mud rock | |
| CN1120525A (en) | Method for prepn. of cement coagulant and application thereof | |
| CN115385590A (en) | Early-strength low-hydration-heat portland cement clinker prepared from rare earth tailings and preparation method thereof | |
| CN1023557C (en) | Cement kiln calcining efficacy-improved technology by adding seed crystal | |
| CN1101629A (en) | Calicining cement technology by adding rare earth poor ore or rare earth waste slag | |
| CN1033574C (en) | Swelling agent for tuff | |
| CN1092391A (en) | The production method of cement doped active materials | |
| CN1063408C (en) | Normal silicate cement raw material and clinker without containing iron raw material | |
| CN1400188A (en) | Compound portland cement produced by utilizing industrial waste slag |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |