CN1226219C - Alite-barium calcium sulfur aluminate cement - Google Patents
Alite-barium calcium sulfur aluminate cement Download PDFInfo
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- CN1226219C CN1226219C CNB031390048A CN03139004A CN1226219C CN 1226219 C CN1226219 C CN 1226219C CN B031390048 A CNB031390048 A CN B031390048A CN 03139004 A CN03139004 A CN 03139004A CN 1226219 C CN1226219 C CN 1226219C
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- Prior art keywords
- aluminate
- cement
- barium
- mineral
- alite
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- 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
Abstract
The present invention belongs to the technical field of cement, which particularly relates to alite-barium calcium sulfur aluminate cement which is compounded by minerals of sulfur, aluminate, barium and calcium and alite minerals. The present invention discloses the alite-barium calcium sulfur aluminate cement whose cement clinker is an ore phase system which is mainly composed of CBA<*>-C3 S-C2 S-C3 A-C4 AF. The minerals have the weight percentages that 3 to 38% of the sulfur, the aluminate, the barium and the calcium, 30 to 60% of tricalcium aluminate, 15 to 40% of dicalcium silicate, 3 to 20% of tricalcium alumine acid and 3-20% of ferrum aluminate. The present invention has the advantages of low firing temperature, high early intensity, quick setting rate and low cost compared with ordinary silicate cement.
Description
(1) technical field under
The invention belongs to the cement material technical field, particularly a kind of by barium-bearing calcium sulfo-aluminate mineral and A Lite mineral compound A Lite-barium-bearing calcium sulfo-aluminate cement.
(2) background technology
At present, there is some shortcoming and defect in a large amount of silicate cements that use, mainly show as firing temperature height (being 1450 ℃), early strength is low and time of coagulation is long, has caused cement manufacturing energy consumption height, production cost increases, and simultaneously rate of progress of the construction and construction quality is all had certain influence.Therefore, how further reducing the firing temperature of silicate cement and improve its early stage performance, is the key issue that cement technology field emphasis solves.
As the Chinese patent " titanate-containing sulpho-aluminate cement " that on September 13rd, 1989, disclosed publication number was CN1035486A, be to be the high-early-strength type cement that the essential mineral composition is made with the baric calcium sulphoaluminate, its firing temperature is low, is 1250-1350 ℃.The essential mineral of this cement is based on titanate-containing sulpho-aluminate, and ratio is 40-80%, and main raw material is a barite etc., and cost is higher, is applicable to special construction project, belongs to special engineered material, is not suitable for producing in enormous quantities.
(3) summary of the invention
The present invention is in order to overcome above deficiency, provides a kind of and taken the novel concrete of ore deposit phase system as the leading factor with A Lite-barium-bearing calcium sulfo-aluminate, and it is low to have a firing temperature, the early strength height, and setting rate is fast, the advantage that cost is low.
The present invention is achieved through the following technical solutions:
The invention discloses a kind of A Lite-barium-bearing calcium sulfo-aluminate cement, its cement clinker mainly is by CBA S-C
3S-C
2S-C
3A-C
4The ore deposit phase system that AF forms, the weight percent of each mineral is:
Barium-bearing calcium sulfo-aluminate: 3-38%
Tricalcium silicate: 30-60%
Dicalcium Phosphate (Feed Grade): 15-40%
Tricalcium aluminate: 3-20%
Iron calcium aluminate: 3-20%
Wherein the molecular formula of barium-bearing calcium sulfo-aluminate (being abbreviated as CBA S) is:
(3-X)CaO·XBaO·3Al
2O
3·CaSO
4(X＝0.25～3)。
In the cement clinker of the present invention, the better weight percent of the composition of each mineral is:
Barium-bearing calcium sulfo-aluminate: 10-30%
Tricalcium silicate: 36-50%
Dicalcium Phosphate (Feed Grade): 20-40%
Tricalcium aluminate: 3-20%
Iron calcium aluminate: 3-20%
Cement of the present invention, the raw material component of its cement is by weight percentage:
CaO： 30-50％
SiO
2： 7-20％
Al
2O
3： 2-20％
Fe
2O
3： 1-4％
SO
3： 0.3-4％
BaO： 1-8％
CaF
2： 0.6-1.2％
The barium-bearing calcium sulfo-aluminate mineral are a kind of hydraulicity mineral with outstanding high-early-strength performance, and its firing temperature is low, and can utilize industrial residue production.Making the employed main raw material of these mineral is Wingdale, low-grade bauxite and baric mine tailing or waste residue, just can easy fired below 1400 ℃.The ultimate compression strength of the barium-bearing calcium sulfo-aluminate mineral of manufacturing was at 1 day, 3 days and reach 35.5MPa, 59.3MPa and 72.1MPa the 7 day length of time respectively, and its hydration and hardening speed is very fast, was a kind of high gelling mineral with outstanding high-early-strength performance.
Present technique is that the guide mineral A Lite of high-early-strength type barium-bearing calcium sulfo-aluminate mineral and Portland clinker is compound under cold condition, forms the novel concrete clinker mineral system of taking mineral with A Lite-barium-bearing calcium sulfo-aluminate as the leading factor.This cement had both had the characteristic of silicate cement intensity stabilization development, and the high advantage of early strength enhancement rate that again rapid hardening cement is arranged and had can be widely used in having the high quality requirement, the common construction project of high-speed construction.Silicate cement is with tricalcium silicate (C
3S claims A Lite again), Dicalcium Phosphate (Feed Grade) (C
2S), tricalcium aluminate (C
3A) and iron calcium aluminate (C
4AF) be essential mineral, C
3The content of S need expend a large amount of high-quality limestone mineral resources generally more than 50%, and C
3S need could form under 1450 ℃ of hot conditionss in a large number, causes energy consumption higher.Simultaneously, the early stage performance of making of silicate cement is on the low side at present, and it is low mainly to show as cement early strength, and hydration and hardening speed is slow, and time of coagulation is long.And the barium-bearing calcium sulfo-aluminate mineral have outstanding high-early-strength performance, and firing temperature is low, and about about 1350 ℃ is a kind of low temp and early strength mineral of excellent property.
The present invention is with C
3S and CBA S carry out compound, form with C by high temperature solid state reaction
3S-CBA S takes the new cement clinker ore deposit phase system of mineral as the leading factor.Different with silicate cement, Portland clinker is by C
3S-C
2S-C
3A-C
4Four kinds of essential minerals of AF are formed, and A Lite-barium-bearing calcium sulfo-aluminate cement clinker is by CBA S-C
3S-C
2S-C
3A-C
4The new system of five kinds of mineral compositions of AF.But the introducing instead of part silicate minerals of barium-bearing calcium sulfo-aluminate mineral, thus the content of Portland clinker CaO reduced, saved high-quality limestone resource.Simultaneously, the barium-bearing calcium sulfo-aluminate mineral just can form below 1400 ℃ in a large number, and C in the grog
3S, C
2The reduction of S content makes A Lite-barium-bearing calcium sulfo-aluminate cement clinker just can burn till about 1360-1380 ℃, reduces 50-100 ℃ than the firing temperature of silicate cement, has saved the energy.Particularly the barium-bearing calcium sulfo-aluminate mineral have outstanding high-early-strength performance, make A Lite-barium-bearing calcium sulfo-aluminate cement overcome the shortcoming of the early stage poor performance of silicate cement.This cement early strength reaches more than 30% than the silicate cement raising approximately, and later strength also has increase to a certain degree, and the cement setting setting rate is obviously accelerated.The use of A Lite-barium-bearing calcium sulfo-aluminate cement has unusual effect to comprehensive raising construction quality, quickening speed of application, is particularly suitable for the large-scale construction project of Highrise buildings, high-grade highway, airport, the contour specification of quality of bridge and tunnel.In addition, because the effect that also has compensate for shrinkage of barium-bearing calcium sulfo-aluminate mineral, thereby can reduce the shrinking percentage of cement, reduce shrinkage crack, improve the weather resistance of concrete works.Present technique technology is simple, adopts the producing apparatus of existing silicate cement fully, and the barium salt component that needs can be provided by the natural barite mine tailing, also can utilize the baric industrial residue, and raw materials cost reduces.
Main points of the present invention are to utilize the raw material of silicate cement, allocate into simultaneously to contain barium ore (barite mine tailing etc.) or components such as baric industrial residue and fluorite, burn till under 1400 ℃ of conditions being lower than, and form with C by solid state reaction
3S-CBA S takes the new cement clinker ore deposit phase system of mineral as the leading factor, reaches the reduction firing temperature, improves the purpose of cement early strength.
The invention has the beneficial effects as follows that it is low to have a firing temperature than ordinary Portland cement, the early strength height, setting rate is fast, the advantage that cost is low.
(4) description of drawings
Fig. 1 is the XRD analysis figure of cement clinker of the present invention
(5) embodiment
Embodiment:
The specific embodiment of A Lite of the present invention-barium-bearing calcium sulfo-aluminate cement sees Table 1, table 2 and table 3.
Table 1 proportioning raw materials (being chemical reagent) %
| Numbering | SiO 2 | Al 2O 3 | Fe 2O 3 | CaCO 3 | BaCO 3 | BaSO 4 |
| 1# | 14.82 | 4.04 | 1.71 | 79.43 | - | - |
| 2# | 14.25 | 4.51 | 3.71 | 76.24 | 0.21 | 1.08 |
| 3# | 13.52 | 6.30 | 3.09 | 74.40 | 0.44 | 2.16 |
| 4# | 12.05 | 9.67 | 2.48 | 70.47 | 0.93 | 4.40 |
| 5# | 10.50 | 13.23 | 1.86 | 66.23 | 1.44 | 6.74 |
| 6# | 8.86 | 16.96 | 1.19 | 61.80 | 1.98 | 9.21 |
By above six kinds of proportion schemes preparation raw material, allocate a small amount of fluorite simultaneously into, press CaF
2Count 0.6～1.2%.The raw material chemical ingredients sees Table 2
Table 2 cement slurry chemical ingredients %
| Numbering | Loss | SiO 2 | Al 2O 3 | Fe 2O 3 | CaO | BaO | SO 3 |
| 1# | 34.93 | 14.82 | 4.04 | 1.71 | 44.50 | - | - |
| 2# | 33.57 | 14.25 | 4.51 | 3.71 | 42.72 | 0.87 | 0.37 |
| 3# | 32.85 | 13.52 | 6.30 | 3.09 | 41.74 | 1.76 | 0.74 |
| 4# | 31.19 | 12.05 | 9.67 | 2.48 | 39.49 | 3.61 | 1.51 |
| 5# | 29.44 | 10.50 | 13.23 | 1.86 | 37.11 | 5.55 | 2.31 |
| 6# | 27.61 | 8.86 | 16.96 | 1.19 | 34.63 | 7.59 | 3.16 |
Above grog is burnt till with silicon molybdenum rod furnace in the laboratory, firing temperature is 1360 ℃-1380 ℃.The physicals of cement sees Table 3.
Table 3 cement physical properties
| Numbering | Fineness % | Ultimate compression strength/folding strength MPa | Time of coagulation h | F-CaO ％ | |||
| 1 day | 3 days | 28 days | Initial set | Final set | |||
| 1# | 3-3.5 | 37.5/3.3 | 54.0/6.8 | 81.0/10.4 | 2:31 | 4:15 | 1.8 |
| 2# | 3-3.5 | 40.8/3.9 | 58.5/7.5 | 90.0/11.0 | 2:05 | 4:03 | 1.3 |
| 3# | 3-3.5 | 48.0/4.6 | 71.8/7.9 | 98.6/11.8 | 1:42 | 3:33 | 1.0 |
| 4# | 3-3.5 | 51.2/5.0 | 76.6/8.4 | 100.0/12.0 | 1:30 | 3:20 | 1.1 |
| 5# | 3-3.5 | 55.3/5.2 | 78.3/8.6 | 97.4/11.3 | 1:20 | 3:10 | 1.0 |
| 6# | 3-3.5 | 58.1/5.5 | 75.6/7.8 | 93.3/11.1 | 1:05 | 2:50 | 0.8 |
Wherein 3# grog is carried out XRD analysis, seen Fig. 1.Can see in A Lite-barium-bearing calcium sulfo-aluminate cement clinker mineral system, form the A Lite and the barium-bearing calcium sulfo-aluminate mineral of some amount, further specify the compound of these two kinds of mineral and coexistence, can reach the purpose that improves cement early strength.
Claims (3)
1. Yi Zhong A Lite-barium-bearing calcium sulfo-aluminate cement, it is characterized in that: its cement clinker is main
Be by CBA S-C
3S-C
2S-C
3A-C
4The ore deposit phase system that AF forms, the weight of each mineral
Amount per-cent is:
Barium-bearing calcium sulfo-aluminate: 3-38%
Tricalcium silicate: 30-60%
Dicalcium Phosphate (Feed Grade): 15-40%
Tricalcium aluminate: 3-20%
Iron calcium aluminate: 3-20%
Wherein the molecular formula of barium-bearing calcium sulfo-aluminate is:
(3-X)CaO·XBaO·3Al
2O
3·CaSO
4，X＝0.25～3。
2. cement according to claim 1 is characterized in that: in its cement clinker each
The weight percent of mineral is:
Barium-bearing calcium sulfo-aluminate: 10-30%
Tricalcium silicate: 36-50%
Dicalcium Phosphate (Feed Grade): 20-40%
Tricalcium aluminate: 3-20%
Iron calcium aluminate: 3-20%.
3. cement according to claim 1 is characterized in that: the raw material group of its cement
Become and be by weight percentage:
CaO： 30-50％
SiO
2： 7-20％
Al
2O
3：2-20％
Fe
2O
3：1-4％
SO
3： 0.3-4％
BaO： 1-8％
CaF
2： 0.6-1.2％。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031390048A CN1226219C (en) | 2003-08-14 | 2003-08-14 | Alite-barium calcium sulfur aluminate cement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031390048A CN1226219C (en) | 2003-08-14 | 2003-08-14 | Alite-barium calcium sulfur aluminate cement |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1513786A CN1513786A (en) | 2004-07-21 |
| CN1226219C true CN1226219C (en) | 2005-11-09 |
Family
ID=34240138
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB031390048A Expired - Fee Related CN1226219C (en) | 2003-08-14 | 2003-08-14 | Alite-barium calcium sulfur aluminate cement |
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Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1303028C (en) * | 2005-07-06 | 2007-03-07 | 王红 | Low alkali high-strength cement |
| CN100357209C (en) * | 2006-07-17 | 2007-12-26 | 济南大学 | Belite-calcium barium sulphoaluminate cement |
| CN101134647B (en) * | 2007-06-14 | 2010-08-25 | 中国建筑材料科学研究总院 | Process for firing high-performance alite-sulphoaluminate cement clinker |
| CN101851072A (en) * | 2010-06-01 | 2010-10-06 | 济南大学 | Alite-sulphoaluminate strontium calcium cement |
| CN101886954A (en) * | 2010-07-09 | 2010-11-17 | 济南大学 | Cement-based temperature sensing element for positive and negative temperature automatic measurement |
| CN104496231B (en) * | 2014-12-29 | 2016-07-06 | 桂林理工大学 | A kind of method utilizing red mud and the clay standby high ferro Alite-barium calcium sulphoaluminate of barium |
| CN104496232A (en) * | 2014-12-29 | 2015-04-08 | 桂林理工大学 | Method for preparing Alite-barium calcium sulphoaluminate cement from red mud |
| CN104496223B (en) * | 2015-01-06 | 2017-12-01 | 成都净空环保科技有限公司 | A kind of barium slag detoxification |
| CN107117838B (en) * | 2017-05-27 | 2020-04-03 | 济南大学 | Sulphate aluminium cement clinker containing tricalcium silicate and preparation method thereof |
| PL234920B1 (en) * | 2017-12-14 | 2020-05-18 | Cementownia Odra Spolka Akcyjna | Composition for production of clinker and method for production of clinker |
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2003
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