CN112645616A - Method for regulating and controlling mineral composition of high-iron sulphoaluminate clinker - Google Patents

Method for regulating and controlling mineral composition of high-iron sulphoaluminate clinker Download PDF

Info

Publication number
CN112645616A
CN112645616A CN202011638958.5A CN202011638958A CN112645616A CN 112645616 A CN112645616 A CN 112645616A CN 202011638958 A CN202011638958 A CN 202011638958A CN 112645616 A CN112645616 A CN 112645616A
Authority
CN
China
Prior art keywords
sulpho
content
ferro
performance
aluminate
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
Application number
CN202011638958.5A
Other languages
Chinese (zh)
Inventor
王文龙
姚星亮
武双
姚永刚
杨世钊
王旭江
李敬伟
毛岩鹏
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shandong University
Original Assignee
Shandong University
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Shandong University filed Critical Shandong University
Priority to CN202011638958.5A priority Critical patent/CN112645616A/en
Publication of CN112645616A publication Critical patent/CN112645616A/en
Priority to PCT/CN2021/098462 priority patent/WO2022142138A1/en
Pending legal-status Critical Current

Links

Images

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
    • C04B7/32—Aluminous cements
    • 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
    • C04B7/36—Manufacture of hydraulic cements in general
    • 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
    • C04B7/36—Manufacture of hydraulic cements in general
    • C04B7/38—Preparing or treating the raw materials individually or as batches, e.g. mixing with fuel
    • 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
    • C04B7/36—Manufacture of hydraulic cements in general
    • C04B7/43—Heat treatment, e.g. precalcining, burning, melting; Cooling
    • C04B7/44—Burning; Melting

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Curing Cements, Concrete, And Artificial Stone (AREA)

Abstract

The invention belongs to the field of cement production, and relates to a method for regulating and controlling the mineral composition of clinker of a high-performance sulphoaluminate cementing material. The invention adopts the regulation and control of the total amount of CaO and CaO/CaSO in the raw materials4The content ratio method directionally regulates and controls the composition of iron-containing minerals of the sulpho-ferro-aluminate cementing material clinker. By regulating CaO/CaSO4Increasing the content of Fe in clinker2O3In that
Figure DDA0002879414390000011
Thereby increasing the doping amount of
Figure DDA0002879414390000012
Content of (2), lowering of C4AF and C2F content, increasing Fe2O3And Al2O3The effective utilization rate of the catalyst. Thus, Fe in the raw material2O3/Al2O3At a certain time, CaO/CaSO is regulated and controlled4The content of the iron-containing mineral realizes the directional regulation and control of the iron-containing mineral, and the sulpho-ferro-aluminate cementing material with better performance is obtained.

Description

Method for regulating and controlling mineral composition of high-iron sulphoaluminate clinker
Technical Field
The invention relates to the technical field of cement production, in particular to a method for regulating and controlling the mineral composition of clinker of a high-performance high-iron sulphoaluminate cementing material.
Background
The information in this background section is only for enhancement of understanding of the general background of the invention and is not necessarily to be construed as an admission or any form of suggestion that this information forms the prior art already known to a person of ordinary skill in the art.
The cement industry is one of the largest global energy consumption and carbon emission industries, and will produce 0.87 tons of CO per 1 ton of cement produced2. According to statistics, about 40 hundred million tons of ordinary portland cement is produced worldwide every year, and CO is discharged2Accounting for about 7% of the global emissions. Therefore, the development of a low-carbon cement is urgent. Sulphoaluminate cement, a common low-carbon cement, is attracting more and more attention due to its low CaO content, low calcination temperature and easy grindability. However, the main active mineral of sulphoaluminate cement is calcium sulphoaluminate (Ca)4Al6SO16，C4A3S)，Al2O3The content of (b) is high, and a large amount of bauxite or other high-grade aluminum sources are consumed in the production process. Although there have been many studies on the production of sulphoaluminate cement using solid wastes as raw materials, the production method is not limited to the above-mentioned methodThe solid waste with high aluminum content is also needed as raw material. Therefore, thioaluminate cements are expensive and have limited application.
When preparing high iron sulphoaluminate cement, Fe2O3Can be substituted for C4A3Al in S mineral2O3Form C4A(3-x)FxS, the mineral having a chemical formula of4A3S similar hydration activity. Therefore, a part of Fe is doped2O3As a raw material for calcining clinker to replace Al2O3Can reduce Al2O3Thereby reducing the amount of Al in the raw material2O3The content requirement of (A). However, except for generating C4A(3-x)FxS, a portion of Fe2O3Will generate Ca4Al2Fe2O10(C4AF) or Ca2Fe2O5(C2F) In that respect Wherein, C4Too fast an AF hydration rate, C2F has no hydration activity and is not beneficial to the long-term stable increase of the cement strength.
The use of Fe has already been mentioned in the prior art2O3Substituted Al2O3Reduction of Al2O3But not to control the amount of active mineral C in the high iron sulphoaluminate cement4A(3-x)FxComposition of S, but C, both of which have reacted too quickly4And (5) treating AF. Therefore, the hydration of the mineral in the prepared high-iron sulphoaluminate cementing material is too fast, which is not beneficial to the continuous development of the performance of the high-iron sulphoaluminate cementing material.
Therefore, the industry is mainly faced with some problems:
(1) how to improve the active mineral C in the sulpho-ferro-aluminate cementing material4A(3-x)FxThe content of S.
(2) How to improve Fe in sulphoaluminate cementing material clinker2O3The amount of (3) incorporated.
(3) How to utilize low-grade aluminum-containing ore or solid waste as raw materials for firing sulpho-ferro-aluminate gelled materials.
Disclosure of Invention
Aiming at the defects of high requirement on the aluminum content of the raw material clinker of the sulphoaluminate cementing material, low activity of iron-containing minerals and the like in the prior art, the invention aims to provide a method for regulating and controlling the mineral composition of the clinker of the high-performance sulphoaluminate cementing material. The invention adopts the regulation and control of the total amount of CaO and CaO/CaSO in the raw materials4The content ratio method directionally regulates and controls the composition of iron-containing minerals of the sulpho-ferro-aluminate cementing material clinker. By regulating CaO/CaSO4Increasing the content of Fe in clinker2O3At C4A(3-x)FxThe doping amount in S is increased, thereby increasing C4A(3-x)FxContent of S, lowering C4AF and C2F content, increasing Fe2O3And Al2O3The effective utilization rate of the catalyst. Thus, Fe in the raw material2O3/Al2O3At a certain time, CaO/CaSO is regulated and controlled4The content of the iron-containing mineral realizes the directional regulation and control of the iron-containing mineral, and the sulpho-ferro-aluminate cementing material with better performance is obtained.
In order to achieve the technical purpose, the invention adopts the following technical scheme:
the invention provides a high-performance sulpho-ferro-aluminate gelled material, which comprises the following components in percentage by mass: 50% -70% of C4A(3-x)FxS、20％-40％C2S、 0％-10％CaSO4、0％-10％C4AF, wherein the value range of x is 0 to 1.5.
At present, the technical key point of the patent lies in regulating CaO/CaSO4The content ratio realizes the directional regulation and control of the mineral composition of the high iron sulphoaluminate cementing material. The prior art focuses on the preparation of high-iron belite sulphoaluminate cement, wherein the mineral composition is C4A3S，C2S and C4AF without any mention of C4A(3-x)FxS, nothing about C4A(3-x)FxS and C4And (3) a regulating and controlling technology of AF content.
In a second aspect of the invention, a preparation method of a high-performance sulpho-ferro-aluminate cementing material is provided, which comprises the following steps:
preparing raw materials of a calcium source, a sulfur source, a silicon source, an aluminum source and an iron source as raw materials according to a target product, and grinding the raw materials by a grinder to obtain a mixture;
adding the mixture into a homogenizing tank, and washing to obtain a homogenized material;
filtering the homogenized material to dry, drying and grinding to obtain a powdery mixture;
and calcining the powdery mixture, and cooling to obtain the sulpho-ferro-aluminate cementing material with high active mineral content.
The invention regulates and controls CaO/CaSO4The content ratio realizes the directional regulation and control of the mineral composition of the high-iron sulphoaluminate cementing material. Improves C content in clinker of high-iron sulphoaluminate cementing material4A(3-x)FxS content, reduced Al content2O3Consumption, reducing the raw material requirement of the sulphoaluminate cementing material, realizing the resource utilization of low-grade aluminum-containing solid waste, widening the raw material source, and improving the mechanical property of the iron sulphoaluminate cementing material from the mineral composition for continuous development.
In a third aspect of the invention, the application of the high-performance sulpho-ferro-aluminate cementing material in the fields of cement manufacture and building engineering is provided.
The invention has the beneficial effects that:
(1) compared with the traditional method, the method can prepare the high C4A(3-x)FxS content of sulphoaluminate ferrite gelled material. Wherein, C4A(3-x)FxS has higher activity than C4And (5) AF. Therefore, the sulphoaluminate ferrite cementing material has better mechanical properties.
(2) Compared with the traditional method, the method regulates and controls CaO/CaSO in the raw materials4The content, the calcining temperature, the heat preservation time and the like of the clinker can realize the directional regulation and control of the iron-containing mineral composition in the clinker, and not only can improve C4A(3-x)FxContent of S, and C in clinker4A(3-x)FxFe in S2O3For Al2O3The substitution amount can reach 40-50%, thereby reducing Al in the sulpho-ferro-aluminate cementing material clinker2O3The content of (a).
(3) Compared with the traditional method, the method not only reduces the Al content in the sulpho-ferro-aluminate cementing material clinker2O3The content of the aluminum oxide and the effective utilization rate of the aluminum oxide are improved by more than 50 percent, thereby reducing the requirement of the sulphoaluminate cementing material clinker on aluminum element, increasing the selection variety of raw materials and leading the solid waste with lower aluminum content or low-grade aluminum-containing mineral to be used as the calcining raw material of the sulphoaluminate cementing material clinker.
(4) Compared with the traditional method, the method reduces Al in the clinker2O3Content of (2), not only saving the stock material Al2O3The consumption of the sulphoaluminate gelled material can be reduced, the price of the sulphoaluminate gelled material can be reduced, and the application range of the sulphoaluminate gelled material can be enlarged.
(5) The preparation method is simple, convenient to operate, high in practicability and easy to popularize.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the invention and together with the description serve to explain the invention and not to limit the invention.
FIG. 1 is an XRD pattern of different Cm sulpho-iron aluminate cementitious materials according to the present invention.
Detailed Description
It is to be understood that the following detailed description is exemplary and is intended to provide further explanation of the invention as claimed. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments in accordance with the invention. As used herein, the singular is intended to include the plural unless the context clearly dictates otherwise, and it should be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of features, steps, operations, devices, components, and/or combinations thereof.
One of the objects of the present invention is to provide a high performance sulpho-ferro-aluminate cementitious material.
The second purpose of the invention is to provide a preparation method of the sulpho-ferro-aluminate cementing material with high active mineral content.
The invention also aims to provide a mineral composition regulation and control method for the high-performance sulphoaluminate cementing material clinker.
In order to achieve the above purpose, the invention specifically discloses the following technical scheme:
the invention discloses a high-performance sulpho-ferro-aluminate cementing material, which comprises the following components in percentage by mass: 50% -70% of C4A(3-x)FxS、20％-40％C2S、 0％-10％CaSO4、0％-10％C4AF。
Secondly, the invention discloses a preparation method of the sulpho-aluminate cementing material with high active mineral content. The method comprises the following steps:
1) calcium sources such as carbide slag and the like, sulfur sources such as desulfurized gypsum and the like, silicon sources such as fly ash and the like, and iron sources such as aluminum sources, red mud, steel slag and the like are used as raw materials, the raw materials are prepared according to a certain target product, and the raw materials are ground by a grinder to obtain a mixture;
2) adding the mixture obtained in the step (1) into a homogenizing tank, and washing to obtain a homogenized material;
3) filtering the homogenized material obtained in the step (2), drying and grinding to obtain a powdery mixture;
4) and (4) calcining the powdery mixture obtained in the step (3), and after the calcination is finished, placing the mixture in air for rapid cooling to obtain the sulpho-aluminosilicate cementing material with high active mineral content.
In the step 1), when the clinker is used for preparing raw materials, SiO in the target clinker2、Fe2O3And Al2O3The chemical composition proportion of (A) is certain,about 8% -14%: 18% -26%: 6 to 16 percent; the total amount of CaO is determined by the alkalinity coefficient CmBy definition, from about 0.80 to about 1.10; CaSO4The total amount of (B) is 0-20%. When the total amount of CaO is controlled to be Cm0.85-1.00, adding CaSO4The theoretical residual amount of (A) is kept in the range of 5-15%; when the CaO content is CmWhen the content is more than 1.00, adding CaSO4The theoretical residual amount of (C) is kept between 15% and 30% to ensure CaSO4Remains in the clinker, thereby promoting C in the target product4A(3-x)FxAnd (4) forming S. By regulating and controlling CaO/CaSO in the raw materials4To obtain calcined high C4A(3-x)FxS content of the sulpho-ferro-aluminate cementing material clinker raw material.
In the step 2), the mass ratio of the mixture to water in washing is 1: 3-4. And through water washing in the homogenizing tank, soluble ions such as sodium ions, chlorine ions and the like in the aluminum ash and the carbide slag can be removed, and the influence of the soluble ions on the performance of the cementing material is reduced.
In the step 2), the washing time is 2-4 h.
In the step 3), the drying after filtration refers to: the homogenized material is filter-pressed until the water content is below 25 percent (mass), and dried for 2 hours at 600 ℃.
In the step 3), the fineness of the homogenized and mixed material after grinding is 30% of the screen residue with the particle size of 45 mu m.
In the step 4), the calcination temperature is 1150-1250 ℃, and the calcination time is 0.5-1.5 h. Cooling to obtain the sulpho-ferro-aluminate cementing material with high active mineral content.
Compared with the traditional preparation method of the sulphoaluminate cement clinker, the preparation method has the advantages that the calcination temperature is 1250-1300 ℃, and the energy-saving effect is more obvious; and active mineral C in clinker is increased by blending raw materials4A(3-x)FxAnd the content of S can obtain the high-performance sulpho-ferro-aluminate cementing material.
Finally, the invention discloses a mineral composition regulation and control method of high-performance sulphoaluminate cementing material clinker.
1) Preparing raw materials according to a certain target product by taking calcium sources such as carbide slag and the like, sulfur sources such as desulfurized gypsum and the like, silicon sources such as fly ash and iron sources such as aluminum sources, red mud, steel slag and the like as raw materials, and grinding the raw materials by a grinder to obtain a raw material mixture consisting of target minerals;
in step 1), SiO in the target clinker2、Fe2O3And Al2O3The chemical composition proportion of (A) is definite, and the proportion is about 8% -14%: 18% -26%: 6 to 16 percent.
In step 1), by changing CaO and CaSO4The content of (a) regulates and controls the mineral composition of the clinker. When the total amount of CaO is controlled to be Cm0.85-1.00, adding CaSO4The theoretical residual amount of (A) is kept in the range of 5-15%; when the CaO content is CmWhen the content is more than 1.00, adding CaSO4The theoretical residual amount of (C) is kept between 15% and 30% to ensure CaSO4Remains in the clinker, thereby promoting C in the target product4A(3-x)FxAnd (4) forming S. The raw material proportion realizes the directional regulation and control of the mineral composition of the clinker. Similarly, when the total amount of CaO is controlled to be Cm0.85-1.00, CaSO4When the theoretical residual quantity is insufficient, the proper calcination temperature can be reduced to 1150-1200 ℃ or the heat preservation time can be shortened to 10-20 min; conversely, from a production point of view, the temperature is lowered or the calcination time is reduced, while the CaO content is dosed to CmWhen the content is more than 1.00, adding CaSO4The theoretical residual amount of the Fe-Fe alloy is kept between 10 and 20 percent to realize Fe2O3And Al2O3Increase of effective utilization rate and increase of Fe2O3Thereby reducing the use of aluminum raw materials.
The method for regulating and controlling the mineral composition of the clinker of the high-iron ferro-sulphur aluminate cementing material utilizes CaO and CaSO in raw materials4Content pair C4AF and C4A(3-x)FxInfluence of S formation reaction kinetics to realize Fe2O3Generation of C4AF and C4A(3-x)FxAnd (4) directional regulation and control of S. Not only improving the active mineral C in the clinker4A(3-x)FxThe content of S, and the effective utilization rate of the alumina is improved, and the raw material is increasedThe addition amount of the ferric oxide is added, thereby reducing the use of the aluminum raw material and widening the source of the raw material.
The present invention is described in further detail below with reference to specific examples, which are intended to be illustrative of the invention and not limiting.
Example 1:
a method for regulating and controlling the mineral composition of clinker of a high-performance sulphoaluminate cementing material comprises the following steps:
(1) the raw materials of the sulphoaluminate cementing material clinker comprise electroplating sludge, red mud, carbide slag, phosphogypsum and fly ash, and the chemical compositions of the raw materials are shown in table 1. Mineral composition C in the target clinker product4A3S： C2S：CaSO4：C4AF is 40%: 30%: 10%: 20 percent. As shown in Table 2, according to the SiO content in the target product2、Fe2O3And Al2O3Firstly, preparing a certain proportion of electroplating sludge, red mud, phosphogypsum and fly ash. Subsequently, different amounts of carbide slag are added to adjust the alkalinity coefficient C of the ingredientsmTo obtain a difference of CmThe raw materials of (1).
(2) Putting the raw materials ground in the step (1) into a homogenizing tank, adding water according to the mass ratio of 1:4 (raw materials and water) to obtain slurry, washing and stirring for 3 hours to dissolve out soluble substances in the aluminum ash and the carbide slag into the homogenizing tank;
(3) filter-pressing the slurry until the water content is 18% (wt.%), drying the slurry in a dryer at 600 ℃ for 2h to obtain a mixture, and grinding the dried mixture by using a pulverizer; and adding the ground mixture into a rotary kiln, keeping the temperature at 1200 ℃ for 30min, and rapidly cooling after the calcination is finished to obtain the sulpho-ferro-aluminate cementing material.
The phase composition of the gelled material prepared in this example was measured by XRD, and the results are shown in Table 3 and FIG. 1. it can be seen from FIG. 1 that the gelled material phase prepared in this example is mainly the phase of the gelled material
Figure RE-GDA0002961604660000093
And C2S, this indicates the oreFormation was good, similar to the expected mineral.
Table 1 chemical composition (wt.%) of the different industrial solid wastes in example 1
Figure BDA0002879414370000081
Figure BDA0002879414370000091
TABLE 2 raw material ratios of the cement prepared in example 1
Figure BDA0002879414370000092
TABLE 3 mineral composition of different sulpho-ferro-aluminate cements
Figure BDA0002879414370000093
It should be noted that the above-mentioned embodiments are only preferred embodiments of the present invention, and the present invention is not limited thereto, and although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications and equivalents can be made in the technical solutions described in the foregoing embodiments, or some of them can be substituted. Any modification, equivalent replacement, or improvement made without departing from the spirit and principle of the present invention shall fall within the protection scope of the present invention. Although the present invention has been described with reference to the specific embodiments, it should be understood that the scope of the present invention is not limited thereto, and those skilled in the art will appreciate that various modifications and variations can be made without inventive changes by those skilled in the art based on the technical solutions of the present invention.

Claims (10)

1. High-performance sulpho-ferro-aluminate gelThe material is characterized in that the cementing material consists of the following components in percentage by mass: 50% -70% of C4A(3-x)FxS、20％-40％C2S、0％-10％CaSO4、0％-10％C4AF, wherein x ranges from 0 to 1.5.
2. A preparation method of a high-performance sulpho-ferro-aluminate cementing material is characterized by comprising the following steps:
preparing raw materials of a calcium source, a sulfur source, a silicon source, an aluminum source and an iron source as raw materials according to a target product, and grinding the raw materials by a grinder to obtain a mixture;
adding the mixture into a homogenizing tank, and washing to obtain a homogenized material;
filtering the homogenized material to dry, drying and grinding to obtain a powdery mixture;
and calcining the powdery mixture, and cooling to obtain the sulpho-ferro-aluminate cementing material with high active mineral content.
3. The method for preparing high-performance sulpho-ferro-aluminate cement of claim 2, wherein in the target clinker, SiO2、Fe2O3And Al2O3The chemical composition proportion of (A) is 8% -14%: 18% -26%: 6 to 16 percent.
4. The method for preparing high-performance sulpho-aluminate cement according to claim 2, wherein the total amount of CaO in the target clinker is determined by the basicity coefficient CmDefined as 0.80 to 1.10; CaSO4The total amount of (B) is 0-20%.
5. The method for preparing high-performance sulpho-aluminate cement of claim 4, wherein in the target clinker, when the total amount of CaO is controlled to be Cm0.85-1.00, adding CaSO4The theoretical residual amount of (c) is kept in the range of 5% -15%.
6. The method of claim 4The preparation method of the high-performance sulpho-ferro-aluminate cementing material is characterized in that when the CaO content is CmWhen the content is more than 1.00, adding CaSO4The theoretical residual amount of (A) is kept between 15% and 30%.
7. The method for preparing high-performance sulpho-ferro-aluminate cement of claim 2, wherein when the total amount of CaO is controlled to Cm0.85-1.00, CaSO4When the theoretical residual quantity is insufficient, the calcination temperature is reduced to 1150-1200 ℃ or the heat preservation time is shortened to 10-20 min; conversely, the CaO content is dosed to C by lowering the temperature or reducing the calcination timemWhen the content is more than 1.00, adding CaSO4The theoretical residual amount of (A) is kept at 10% -20%.
8. The preparation method of the high-performance sulpho-aluminate cementing material according to claim 2, wherein the mass ratio of the mixture to the water during washing is 1: 3-4, preferably, the time of washing with water is 2-4 h;
or, the drying after filtration refers to: filter-pressing the homogenized material until the water content is below 25 wt%, and drying for 2h at 600 ℃;
or the fineness of the homogenized and mixed material after grinding is 30 percent of the screen residue with the particle size of 45 mu m;
or the calcination temperature is 1150-1250 ℃, and the calcination time is 0.5-1.5 h.
9. A high performance sulpho-ferro-aluminate cementitious material prepared by a process as claimed in any one of claims 1 to 8.
10. Use of the high performance sulpho-ferro-aluminate cement according to claim 9 in the manufacture of cement and in the field of construction engineering.
CN202011638958.5A 2020-12-31 2020-12-31 Method for regulating and controlling mineral composition of high-iron sulphoaluminate clinker Pending CN112645616A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN202011638958.5A CN112645616A (en) 2020-12-31 2020-12-31 Method for regulating and controlling mineral composition of high-iron sulphoaluminate clinker
PCT/CN2021/098462 WO2022142138A1 (en) 2020-12-31 2021-06-04 Method for regulating and controlling mineral composition of high-iron sulphoaluminate clinker

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202011638958.5A CN112645616A (en) 2020-12-31 2020-12-31 Method for regulating and controlling mineral composition of high-iron sulphoaluminate clinker

Publications (1)

Publication Number Publication Date
CN112645616A true CN112645616A (en) 2021-04-13

Family

ID=75366885

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202011638958.5A Pending CN112645616A (en) 2020-12-31 2020-12-31 Method for regulating and controlling mineral composition of high-iron sulphoaluminate clinker

Country Status (2)

Country Link
CN (1) CN112645616A (en)
WO (1) WO2022142138A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022142138A1 (en) * 2020-12-31 2022-07-07 山东大学 Method for regulating and controlling mineral composition of high-iron sulphoaluminate clinker

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1546409A (en) * 2003-12-01 2004-11-17 济南大学 Barium containing sulpho- ferro- aluminate cement
CN1837121A (en) * 2006-04-20 2006-09-27 中国地质大学（北京） Method for preparing sulphate aluminium cement by red mud
US20130118384A1 (en) * 2010-07-21 2013-05-16 Vicat Iron-doped sulfo-belitic clinker
CN109369043A (en) * 2018-11-02 2019-02-22 济南大学 A kind of white sulphoaluminate cement clinker and preparation method thereof

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2949112B1 (en) * 2009-08-17 2012-10-26 Lafarge Sa ADDITIVES FOR HYDRAULIC BINDER BASED ON CLINKER BELITE - CALCIUM - SULPHOALUMINOUS - FERRITE (BCSAF)
EP2842922B1 (en) * 2013-09-03 2017-11-15 HeidelbergCement AG Fluxes/Mineralizers for calcium sulfoaluminate cements
EP2842925B1 (en) * 2013-09-03 2019-11-06 HeidelbergCement AG Calcium sulfoaluminate composite binders
CN112645616A (en) * 2020-12-31 2021-04-13 山东大学 Method for regulating and controlling mineral composition of high-iron sulphoaluminate clinker

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1546409A (en) * 2003-12-01 2004-11-17 济南大学 Barium containing sulpho- ferro- aluminate cement
CN1837121A (en) * 2006-04-20 2006-09-27 中国地质大学（北京） Method for preparing sulphate aluminium cement by red mud
US20130118384A1 (en) * 2010-07-21 2013-05-16 Vicat Iron-doped sulfo-belitic clinker
CN109369043A (en) * 2018-11-02 2019-02-22 济南大学 A kind of white sulphoaluminate cement clinker and preparation method thereof

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
王燕谋编著: "《中国玻璃纤维增强水泥》", 30 June 2000, 中国建材工业出版社 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022142138A1 (en) * 2020-12-31 2022-07-07 山东大学 Method for regulating and controlling mineral composition of high-iron sulphoaluminate clinker

Also Published As

Publication number Publication date
WO2022142138A1 (en) 2022-07-07

Similar Documents

Publication Publication Date Title
CN104788032B (en) A kind of belite cement and preparation method thereof
CN107021654B (en) A kind of sulphur calcium silicates sulphate aluminium cement and preparation method thereof
CN105060745B (en) Belite aluminium sulfate ferrous aluminate cement and preparation method thereof
CN106698986B (en) A kind of preparation method of sulphoaluminate cement clinker
CN111393047B (en) High-iron belite cement and preparation method thereof
CN105669056B (en) A kind of low-carbon cement clinker and its preparation method and application
CN104496228A (en) Road silicate cement clinker and preparation method thereof
CA2990086A1 (en) Mineralizer for calcium sulfoaluminate ternesite cements
CN108675657B (en) Method for preparing silicate-sulphoaluminate composite system clinker by using waste residues
CN109369044B (en) Sulphoaluminate cement and preparation method thereof
CN101525216A (en) Method for preparing cement clinker by taking lead-zinc tailings as main raw material
CN104724959B (en) A kind of preparation method of the Portland clinker of the low silicon rate high intensity of low heat dissipation
CN1069092C (en) Cement clinker and preparation thereof
CN113354311A (en) Resource-saving low-carbon cement clinker and preparation method thereof
CN114409284A (en) Low-carbon portland cement clinker taking tungsten tailings as raw material and preparation method thereof
CN114716164A (en) Sulphoaluminate cement with phosphogypsum as main raw material and preparation method thereof
CN101580347A (en) Composite industrial residue mineralizer cement clinker and preparation method thereof
CN102838308A (en) Expanded clinker as well as expansion agent and preparation method thereof
CN112645616A (en) Method for regulating and controlling mineral composition of high-iron sulphoaluminate clinker
CN106966617B (en) Easy fired belite-aluminium sulfate-sulphur ferrous aluminate-sulphur calcium silicate cement clinker method
CN108383403A (en) A kind of calcined clay type sulphate aluminium cement gel rubber material
CN109503007B (en) Method for improving whiteness of sulphoaluminate clinker
CN101948258B (en) General portland cement modifier containing aluminate minerals and application method thereof
CN107117838B (en) Sulphate aluminium cement clinker containing tricalcium silicate and preparation method thereof
CN112194392A (en) Sulphoaluminate cement clinker and preparation method thereof

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination