CN103232179A - High-magnesium calcium sulphoaluminate-modified portland cement clinker and production method thereof - Google Patents
High-magnesium calcium sulphoaluminate-modified portland cement clinker and production method thereof Download PDFInfo
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- CN103232179A CN103232179A CN2013101556231A CN201310155623A CN103232179A CN 103232179 A CN103232179 A CN 103232179A CN 2013101556231 A CN2013101556231 A CN 2013101556231A CN 201310155623 A CN201310155623 A CN 201310155623A CN 103232179 A CN103232179 A CN 103232179A
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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
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- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
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Abstract
The invention relates to a high-magnesium calcium sulphoaluminate-modified portland cement clinker and a production method thereof. The high-magnesium calcium sulphoaluminate-modified portland cement clinker is obtained by mixing high-magnesium limestone in the conventional calcium sulphoaluminate-modified portland cement raw material and calcining at the temperature of 1230 DEG C-1300 DEG C. According to the production method disclosed by the invention, by reducing the calcining temperature, the cement clinker is till qualified when the content of magnesium oxide in the cement clinker is broadened to 6.0%-8.0%, and the low-grade limestone with high content of the magnesium oxide and high-magnesium waste slag can be utilized in a large quantity, thus the high-magnesium calcium sulphoaluminate-modified portland cement clinker has great energy-saving and emission-reducing effects and can increase the reserves of the cement raw material. In addition, the high-magnesium calcium sulphoaluminate-modified portland cement produced by the production method disclosed by the invention has a periclase dual-expansion source and good expansion performance, and can significantly compensate the shrinkage of the cement.
Description
Technical field:
The present invention relates to field of cement production, be specifically related to the utilization of high magnesium raw material in the production of calcium sulphoaluminate modified portland cement.
Background technology:
It is the important factor that influences the cement concrete volume stability that the MgO retardance expands.Since the destruction of many bridges of finding France in 1884 first and buildingss such as viaduct and hall, German Cassel town be expanded by the MgO retardance cause since, the research that the MgO retardance expands in the cement and pre-tetrandra root thereof cause the very big concern of countries in the world, and have proposed the limit value of MgO content in the cement clinker in succession in the cement standard.Stipulate in the existing national standard of China: " MgO in clinker content must not surpass 5%, and to steam stability qualified if cement is pressed, and then MgO content allows to be loosened to 6% in the grog.”
The research and development of expanding along with magnesium oxide in the cement in recent years, people recognize gradually, can utilize the corresponding expansion of proper addition of MgO aquation generation in the grog, shrink the crack of opposing thermal stress effect generation with compensating concrete.About the compensate for shrinkage of MgO, Chinese scholars has been carried out a large amount of research.This unsolved difficult problem so far of the temperature compensation that Mehta in 1980 attempts to utilize magnesian expansion characteristics to solve mass concrete.Yuan Mei is dwelt etc. and be studies show that, the aquation of MgO can produce autogenous volume at the mass concrete temperature-fall period and expand, and offsets the volumetric shrinkage that temperature drop causes.At present, the compensate for shrinkage of high-magnesia cement has obtained certain applications in mass concrete.
Magnesium oxide in the cement clinker, the magnesiumcarbonate when producing from cement clinker in the employed starting material.Wingdale is the main raw material of producing cement, accounts for about 80% of raw ingredients of cement, so the magnesium oxide in the cement clinker is mainly from the magnesiumcarbonate in the Wingdale.Mainly be CaO as cement with its useful composition of limestone mine, its content general requirement is greater than 48%, and its oxious component mainly is MgO, also has K in addition
2O, Na
2O, Cl-etc.There are some researches show, for the content that makes MgO in clinker less than 5.0%, should control in the Wingdale raw material content of magnesia less than 3.0%.But each components contents such as CaO, MgO difference in each rock stratum is bigger in actual production, has only index up to specification (MgO ﹤ 3%, CaO ﹥ 48%) ore bed just can be used for producing, be exactly barren layer for the rock stratum that does not meet index, in most of limestone mine, barren layer and ore bed be staggered the appearance often.One deck ore covers one deck barren rock.So, cause a large amount of Wingdales to be stripped from, cause mining cost to increase, the limestone resource waste.China's cement output maintained more than 1,000,000,000 tons always in recent years, and 1 ton of cement clinker of every production need consume 1.25 tons of Wingdales.Along with the increase of China's Economic development and infrastructure construction scale, the demand to cement in considerable time from now on will maintain higher level.Therefore, how utilizing the higher low taste Wingdale of content of magnesia to produce qualified cement has become the problem that the technician need capture, and more and more receives the concern of society.
Summary of the invention:
The objective of the invention is to propose high magnesium raw material in the thinking of utilizing of cement production enterprise, a kind of method of utilizing high magnesium raw material to produce the calcium sulphoaluminate modified portland cement is provided, thereby increase substantially the use range of cement raw material, enlarge cement mine deposit.
The present invention utilizes high magnesium raw material to produce the calcium sulphoaluminate modified portland cement, can utilize trade wastes such as low-grade high magnesium lime stone (for example rhombspar), high magnesium waste residue.
The present invention utilizes high magnesium raw material to produce the method for calcium sulphoaluminate modified portland cement, and conventional calcium sulphoaluminate modified portland cement raw material is calcined, and burns till calcium sulphoaluminate modified portland cement grog; Wherein, comprise high magnesium raw material in the described raw material, be specially content of magnesia greater than 3.0% high magnesium lime stone or other high magnesium waste residues, described calcining temperature is 1230 ℃～1300 ℃.
High magnesium raw material and content of magnesia are used less than 3.0% Wingdale in the described raw material, regulate proportioning according to content of magnesia in the raw material.Usually be the ratio that cooperates that 6.0%-8.0% calculates high magnesium raw material and Wingdale in the raw material in the periclasite crystal content of magnesia in the grog.
The control of periclasite crystalline size is at＜5 μ m in the grog.
Another purpose of the present invention provides the high magnesium calcium sulphoaluminate modified portland cement grog of being made by aforesaid method.This cement clinker is mainly by C
3S, C
2S,
C
4AF, MgO and a spot of C
3A and uncombined CaSO
4Form, control the matching relationship of mineral, Pm with lime saturation factor (KH), silicon rate (SM), iron rate (IM) and sulphur aluminum ratio (Pm) 0.26, KH=0.76-0.85, SO
3/ Al
2O
3=0.4-0.9; Especially, content of magnesia is 6.0%-8.0% by quality in this cement clinker, and periclasite xln size control is at＜5 μ m.
Another purpose of the present invention provides high magnesium calcium sulphoaluminate modified portland cement grog.This high magnesium calcium sulphoaluminate modified portland cement grog comprises C
3S, C
2S,
C
4AF and periclasite crystalline MgO, Pm in the described cement clinker〉0.26, KH=0.76-0.85, SO
3/ Al
2O
3=0.4-0.9, wherein the MgO mass content is 6.0%～8.0%, the periclasite crystalline size is controlled at＜5 μ m.
Another purpose of the present invention provides high magnesium calcium sulphoaluminate modified portland cement grog.This cement clinker comprises C
3S, C
2S,
C
4AF and periclasite crystalline MgO, Pm in the described cement clinker〉0.26, KH=0.76-0.85, SO
3/ Al
2O
3=0.4-0.9, wherein, utilizing common lime stone and content of magnesia greater than 3.0% high magnesium lime stone or other high magnesium waste residues, is to prepare under 1230 ℃～1300 ℃ in calcining temperature, and the MgO mass content is 6.0%～8.0% in the grog, and the periclasite crystalline size is controlled at＜5 μ m.
Wherein, described high magnesium lime stone is the rhombspar of content of magnesia 22.5%, and itself and common lime stone are used, and proportion is no more than 20% in calcium sulphoaluminate modified portland cement raw material.
The present invention utilizes the low characteristic of calcium sulphoaluminate modified portland cement clinker burning temperature, and further reduce calcining temperature, make that the periclasite crystallization in the cement clinker is more tiny, thereby make the periclasite crystalline content that allows in the cement clinker increase, make the utilization of high magnesium raw material in manufacture of cement become possibility.
By enforcement of the present invention, the burning clinker of cement temperature can be reduced to 1230 ℃～1300 ℃, magnesian content is loosened to 6.0%-8.0% in the cement clinker, and can utilize the high low-grade limestone of content of magnesia and high magnesium waste residue in a large number, has good effects of energy saving and emission reduction.In addition, the high magnesium calcium sulphoaluminate modified portland cement of producing among the present invention has
With the two expansion sources of periclasite, have good expansion character, can significantly compensate the contraction of cement.
Embodiment:
Show according to existing research data: all can have MgO in each mineral facies of Portland clinker, but quantity all has certain limit, the MgO of the overwhelming majority still exists with the periclasite crystal.To destroy mainly be that hydration swelling by the magnesium oxide (periclasite crystal) of crystallization causes for magnesian hydration swelling in the cement, so controlling party magnesite crystal just can be controlled the hydration swelling that magnesium oxide causes in the cement.
The factor that influences the periclasite hydration swelling mainly contains periclasite amount of crystals, crystalline size and distributing homogeneity etc.Scholar's research the has been arranged size of periclasite crystal and the relation of amount of crystals (content of magnesia) in the silicate cement, the result is: if crystalline size is＜5 microns, and periclasite crystal mass percentage composition is 5% in ordinary Portland cement; 5～15 microns of crystalline sizes, content 2%; 15～30 microns of crystalline sizes, content 1.5%; 30～60 microns of crystalline sizes, content 1% illustrates that crystalline size is more big, the permission content in cement is just more few.On the other hand, the periclasite amount of crystals is more many, and it is more big to expand; The periclasite crystalline size is more big, and it is more big to expand, speed of expansion more little; The periclasite crystal is the distribution of reuniting, and it is more big to expand.Above industry scholar's achievement in research is taken all factors into consideration, and the contriver proposes, if can control quantity, size and the distribution of periclasite crystal in the Portland clinker, and the speed of expansion in the time of just controlling the silicate cement use.
The present invention is applied to above achievement in research in the production of calcium sulphoaluminate modified portland cement.Its major consideration is:
Calcium sulphoaluminate modified portland cement grog is mainly by C
3S, C
2S,
C
4AF, MgO and a spot of C
3A and uncombined CaSO
4Form.Calcium sulphoaluminate modified portland cement grog uses lime saturation factor (KH), silicon rate (SM), iron rate (IM) and sulphur aluminum ratio (Pm) to control the matching relationship of mineral usually.Wherein each rate value formula is as follows:
Wherein:
Silicon rate (SM) and iron rate (IM) though expression formula identical with traditional portland grog rate value formula, their implication is different: for calcium sulphoaluminate modified portland cement grog, the Al in above-mentioned two rate value formula
2O
3Except participating in forming C
4Outside the AF, mainly be to participate in forming
Rather than C
3A; In addition, Al in the calcium sulphoaluminate modified portland cement grog
2O
3Higher, the Fe of content
2O
3Content is lower, so iron rate IM value is higher.
CaO, Al in sulphur aluminum ratio (Pm) the expression grog
2O
3And SO
3Form
During mineral, SO
3And Al
2O
3Between proportionlity; Owing to form one
Molecule requires SO
3With Al
2O
3Ratio be 0.26, therefore, when Pm=0.26, the expression grog in Al
2O
3The amount of allocating into and Fe
2O
3, SO
3Content be complementary, all do not have residue separately, intermediate phase is except C
4Outside the AF, all the other are
There is not C
3A (or CA) and CaSO
4When Pm＜0.26, expression CaSO
4Allocate quantity not sufficient into, or Al
2O
3Have more than neededly, intermediate phase is except C
4Outside the AF, also have C
3A (or CA) occurs; As Pm〉0.26 the time, expression CaSO
4The amount of allocating into is excessive, or Al
2O
3Deficiency, C can appear in intermediate phase simultaneously
4AF,
And CaSO
4Enough in order in cement clinker, to form
Must consider SO
3The part solid solution also have part high temperature to overflow, so gypsum should be suitably excessive in the cement raw material in other mineral, and the Pm value generally should be greater than 0.26.
Lime saturation factor (KH) expression is given birth to, the CaO in the grog be satisfied with generate, the degree of the required CaO amount of valuable mineral in the grog.In order to obtain good cement performance, avoid coagulating soon mineral C
11A
7CaF
2Generation, make C
3S with
Ratio is suitable, generally controls lime saturation factor KH=0.76-0.85 in the cement clinker, SO
3/ Al
2O
3=0.4-0.9.
As seen, the calcium sulphoaluminate modified portland cement is with the anhydrous calcium sulphoaluminate mineral
Be incorporated in the silicate cement system,
Substitute or the alternative C of part
3A makes cement not only keep the fundamental characteristics of silicate cement, has simultaneously that anhydrous calcium sulphoaluminate mineral hydration and hardening is fast, early strength is high concurrently and characteristics such as microdilatancy, has reduced the silicate cement contract with dry rate.
Also have, the firing temperature of calcium sulphoaluminate modified portland cement is 1280 ℃ ± 50 ℃, lowers 120～220 ℃ than traditional portland firing temperature, can significantly reduce power consumption, coal consumption in the cement production process, has good energy-saving effect; The more important thing is that the present invention proposes, lower calcining temperature also can well be improved the expansion that the periclasite crystal causes in the cement clinker, and this is because calcining temperature is to influence the most important factor of periclasite crystal size.Cement raw material magnesiumcarbonate is decomposed into magnesium oxide at 590 ℃, and 52% CO is arranged during owing to decomposition approximately
2Therefrom overflow, therefore the magnesium oxide that has just decomposed is the solid of highly porous, and surface-area is big, the void content height.The initial magnesium oxide crystal grain that generates is small, and lattice distortion is remarkable, and structure relaxation is active high; With the rising of temperature, magnesium oxide crystal grain is constantly grown up, and lattice is gradually improved, and distortion reduces, and the intergranule hole shrinks, and structure becomes closely, and its activity descends thereupon.Therefore, calcining temperature is more low, and the periclasite crystalline size of formation is more little.And the periclasite crystalline size is more little, and lattice distortion is more big, and activity is more high, and hydration rate is more fast, and the expansion that causes is also just more little.Therefore, for identical rate of expansion, the content of the periclasite that crystal size is little just can suitably increase.So, compare with ordinary Portland cement, the calcium sulphoaluminate modified portland cement can allow the existence of more periclasite crystal, this just makes that the utilization of high magnesium raw material becomes possibility in the production of calcium sulphoaluminate modified portland cement, thereby increase substantially the use range of cement raw material, enlarge cement mine deposit, can also produce qualified cement and reduce the manufacture of cement cost with low price raw material.On the other hand, the further reduction of calcining temperature (top temperature reduces to 1300 ℃), and the utilization of balanced high magnesium raw material can also reduce power consumption, coal consumption in the cement production process again, strengthen energy-saving effect.
Therefore, technological line of the present invention is to utilize high magnesium raw material, as content of magnesia greater than 3% high magnesium lime stone (for example rhombspar), or other high magnesium waste residues (as the magnesium slag), the proportioning of high magnesium raw material and common (low magnesium) Wingdale in the suitable adjustment cement producting material, and calcining obtains the different calcium sulphoaluminate modified portland cement grog of content of magnesia at a lower temperature.
Below be described in further detail the present invention by specific embodiment:
Embodiment 1,
Raw material: each is formed and concrete consumption (by weight): Wingdale 62.12%, rhombspar 12.52%, sandstone 1.12%, flyash 13.90%, sulfate slag 4.07%, dihydrate gypsum 6.27%.Used Wingdale is common low magnesite lime stone, content of magnesia 2.5%; Rhombspar is high magnesium raw material (a kind of content of magnesia greater than 3% high magnesium lime stone), and wherein content of magnesia 22.5%.
By oxide content (by weight) in the raw material calculating raw material be: SiO
2Content 12.86%, Al
2O
3Content 4.11%, Fe
2O
3Content 1.98%, CaO content 37.77%, MgO content 4.64%, SO
3Content 3.09%, loss on ignition 33.46%, surplus are impurity.
Production method is produced cement clinker in new type dry kiln routinely.Calcining temperature: 1300 ℃ of temperature.
Cement clinker is formed (by weight): C
3S:38.20%, C
2S:26.63%,
8.50%, C
4AF:9.06%, the MgO(periclasite): 6%, surplus is C
3A and uncombined CaSO
4
The detection method of periclasite crystalline size and distribution and result in the cement clinker: by scanning electron microscopic observation periclasite crystalline size, the result all≤5 μ m, be distributed in 1-5 μ m; Observe periclasite crystal distribution situation by petrographic analysis, the general and intermediate phase of periclasite is followed growth.
The detection method of cement clinker effect and result: the present invention steams the expansion characteristics that test (GB/T750-1992 Autoclave method for soundness of portland cement) detects high magnesium calcium sulphoaluminate modified portland cement by pressing, and detects used cement here and is made by calcium sulphoaluminate modified Portland grog+5% anhydrite+30% slag by quality.Detected result is that the pressure steaming rate of expansion of cement is 0.25%, meets and presses the steaming rate of expansion to be not more than 0.5% requirement, shows that the pressure steaming stability that detects with cement is qualified.
Embodiment 2～6,
Press table 1 and change high magnesium raw material (rhombspar or magnesium slag) and common low magnesite lime stone consumption in the raw material, repeat whole projects of embodiment 1, finish embodiment 2-6, obtain corresponding cement clinker.The raw material that changes, calcining temperature and grog are formed and the correlation detection data see Table 1.
Table 1: embodiment 2-6 main raw material, calcining temperature, grog constitute and detect
Can see by example detection: when MgO content (embodiment 1-3,5) less than 10% the time, the periclasite crystalline size is distributed in 1-4 μ m all less than 5 μ m in the grog, and cement is pressed and steamed rate of expansion qualified (press steam rate of expansion be not more than 0.5%).And high magnesium raw material rhombspar consumption is bigger than normal among the embodiment 4, and MgO content reaches 10% in the cement clinker, and calcining temperature is also higher, causes the periclasite crystalline size bigger, and two aspect factors cause cement to press the steaming rate of expansion higher, do not meet the expansion character requirement; And among the embodiment 6 in the cement clinker MgO content be 8%, but because calcining temperature is higher, cause the periclasite crystalline size bigger, it is higher to cause cement press to steam rate of expansion, does not meet the expansion character requirement; Embodiment 4 and example 6 are reference examples.
The MgO mass content is 6.0-8.0% in the calcium sulphoaluminate modified Portland grog that the present invention determines to be fit to thus, and the periclasite crystalline size should be in＜5 μ m.
Above example shows that the present invention can reach following concrete technique effect:
One, makes the utilization of high magnesium raw material in cement production process become possibility, increase cement mine margin.
Two, at low temperatures (1230 ℃～1300 ℃) calcination of cement clinker economizes on resources, the energy, has good effects of energy saving and emission reduction.
Three, Zhi Bei high magnesium calcium sulphoaluminate modified portland cement has compensate for shrinkage effect preferably, the drying shrinkage of energy compensating concrete.
Claims (10)
1. a method of utilizing high magnesium raw material to produce the calcium sulphoaluminate modified portland cement is calcined conventional calcium sulphoaluminate modified portland cement raw material, burns till calcium sulphoaluminate modified portland cement grog; It is characterized in that, comprise high magnesium raw material in the described raw material, be specially content of magnesia greater than 3.0% high magnesium lime stone or other high magnesium waste residues, described calcining temperature is 1230 ℃～1300 ℃.
2. method according to claim 1 is characterized in that, high magnesium raw material and content of magnesia are used less than 3.0% Wingdale in the described raw material, regulates proportioning according to content of magnesia in the raw material.
3. method according to claim 2 is characterized in that, is 6.0%～8.0% to calculate the ratio that cooperates of high magnesium raw material and Wingdale in the raw material in the periclasite crystal content of magnesia in the grog.
4. method according to claim 3 is characterized in that, the control of periclasite crystalline size is at＜5 μ m in the grog.
5. one kind high magnesium calcium sulphoaluminate modified portland cement grog is made for adopting claim 1 or 2 or 3 or 4 described methods.
6. according to the described cement clinker of claim 5, it is characterized in that, comprise C
3S, C
2S,
C
4AF and periclasite crystalline MgO; Pm in the described cement clinker〉0.26, KH=0.76-0.85,
SO
3/ Al
2O
3=0.4-0.9, the periclasite crystalline size is controlled at＜5 μ m.
7. according to the described cement clinker of claim 6, it is characterized in that MgO content is that 6.0%-8.0%(is by quality in the cement clinker).
8. one kind high magnesium calcium sulphoaluminate modified portland cement grog comprises C
3S, C
2S,
C
4AF and periclasite crystalline MgO, Pm in the described cement clinker〉0.26, KH=0.76-0.85, SO
3/ Al
2O
3=0.4-0.9 is characterized in that, wherein the MgO mass content is 6.0%～8.0%, and the periclasite crystalline size is controlled at＜5 μ m.
9. one kind high magnesium calcium sulphoaluminate modified portland cement grog comprises C
3S, C
2S,
C
4AF and periclasite crystalline MgO, Pm in the described cement clinker〉0.26, KH=0.76-0.85, SO
3/ Al
2O
3=0.4-0.9, it is characterized in that, utilize common lime stone and content of magnesia greater than 3.0% high magnesium lime stone or other high magnesium waste residues, is to prepare under 1230 ℃～1300 ℃ in calcining temperature, and the MgO mass content is 6.0%～8.0% in the grog, and the periclasite crystalline size is controlled at＜5 μ m.
10. according to the described cement clinker of claim 9, it is characterized in that, content of magnesia 22.5% in the described high magnesium lime stone, itself and common lime stone are used, and proportion is no more than 20% in calcium sulphoaluminate modified portland cement raw material.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103435281A (en) * | 2013-08-15 | 2013-12-11 | 威顿水泥集团有限责任公司 | Cement clinker and preparation process thereof |
| CN105366966A (en) * | 2015-11-24 | 2016-03-02 | 中国建筑材料科学研究总院 | High-magnesium micro-expansion cement and preparation method thereof |
| CN110698092A (en) * | 2019-10-25 | 2020-01-17 | 河北京兰水泥有限公司 | Method for producing high-strength clinker from high-magnesium limestone |
| CN112645617A (en) * | 2021-01-15 | 2021-04-13 | 济南大学 | Containing C7A5Magnesium aluminate cement material of M mineral |
| CN113060950A (en) * | 2021-04-09 | 2021-07-02 | 嘉华特种水泥股份有限公司 | Anti-cracking self-repairing cement |
| CN115259707A (en) * | 2022-08-05 | 2022-11-01 | 西安建筑科技大学 | Method for reducing periclase content in high-magnesium aluminum phase |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0986979A (en) * | 1995-09-29 | 1997-03-31 | Chichibu Onoda Cement Corp | Refractory coating cement |
| CN1374266A (en) * | 2002-04-10 | 2002-10-16 | 中国建筑材料科学研究院 | Calcium aluminate-calcium sulfaluminate cement clinker and the prepn of its swelling agent |
| JP4453097B2 (en) * | 2000-09-12 | 2010-04-21 | 株式会社デイ・シイ | Method for producing low heat generation cement with high phosphorus content |
-
2013
- 2013-04-28 CN CN2013101556231A patent/CN103232179A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0986979A (en) * | 1995-09-29 | 1997-03-31 | Chichibu Onoda Cement Corp | Refractory coating cement |
| JP4453097B2 (en) * | 2000-09-12 | 2010-04-21 | 株式会社デイ・シイ | Method for producing low heat generation cement with high phosphorus content |
| CN1374266A (en) * | 2002-04-10 | 2002-10-16 | 中国建筑材料科学研究院 | Calcium aluminate-calcium sulfaluminate cement clinker and the prepn of its swelling agent |
Non-Patent Citations (1)
| Title |
|---|
| 魏丽颖: "高镁硫铝酸钙改性硅酸盐水泥的制备及性能研究", 《中国优秀硕士学位论文全文数据库工程科技Ⅰ辑》, no. 3, 15 March 2012 (2012-03-15) * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103435281A (en) * | 2013-08-15 | 2013-12-11 | 威顿水泥集团有限责任公司 | Cement clinker and preparation process thereof |
| CN105366966A (en) * | 2015-11-24 | 2016-03-02 | 中国建筑材料科学研究总院 | High-magnesium micro-expansion cement and preparation method thereof |
| CN110698092A (en) * | 2019-10-25 | 2020-01-17 | 河北京兰水泥有限公司 | Method for producing high-strength clinker from high-magnesium limestone |
| CN112645617A (en) * | 2021-01-15 | 2021-04-13 | 济南大学 | Containing C7A5Magnesium aluminate cement material of M mineral |
| CN113060950A (en) * | 2021-04-09 | 2021-07-02 | 嘉华特种水泥股份有限公司 | Anti-cracking self-repairing cement |
| CN115259707A (en) * | 2022-08-05 | 2022-11-01 | 西安建筑科技大学 | Method for reducing periclase content in high-magnesium aluminum phase |
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Application publication date: 20130807 |