CN117088628A - Low-carbon cementing material for carbon sealing and cementing and preparation method thereof - Google Patents
Low-carbon cementing material for carbon sealing and cementing and preparation method thereof Download PDFInfo
- Publication number
- CN117088628A CN117088628A CN202310831552.6A CN202310831552A CN117088628A CN 117088628 A CN117088628 A CN 117088628A CN 202310831552 A CN202310831552 A CN 202310831552A CN 117088628 A CN117088628 A CN 117088628A
- Authority
- CN
- China
- Prior art keywords
- carbon
- low
- cementing
- cementing material
- mass
- 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
- 229910052799 carbon Inorganic materials 0.000 title claims abstract description 58
- 239000000463 material Substances 0.000 title claims abstract description 48
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 34
- 238000007789 sealing Methods 0.000 title claims abstract description 18
- 238000002360 preparation method Methods 0.000 title abstract description 16
- 239000002994 raw material Substances 0.000 claims abstract description 29
- 239000011575 calcium Substances 0.000 claims abstract description 26
- 229910052791 calcium Inorganic materials 0.000 claims abstract description 26
- PASHVRUKOFIRIK-UHFFFAOYSA-L calcium sulfate dihydrate Chemical compound O.O.[Ca+2].[O-]S([O-])(=O)=O PASHVRUKOFIRIK-UHFFFAOYSA-L 0.000 claims abstract description 25
- 235000019738 Limestone Nutrition 0.000 claims abstract description 24
- 239000006028 limestone Substances 0.000 claims abstract description 24
- 229910052586 apatite Inorganic materials 0.000 claims abstract description 13
- 229910001570 bauxite Inorganic materials 0.000 claims abstract description 13
- VSIIXMUUUJUKCM-UHFFFAOYSA-D pentacalcium;fluoride;triphosphate Chemical compound [F-].[Ca+2].[Ca+2].[Ca+2].[Ca+2].[Ca+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O VSIIXMUUUJUKCM-UHFFFAOYSA-D 0.000 claims abstract description 13
- 229910018072 Al 2 O 3 Inorganic materials 0.000 claims abstract description 10
- 239000000126 substance Substances 0.000 claims abstract description 10
- 239000000843 powder Substances 0.000 claims description 18
- 238000000227 grinding Methods 0.000 claims description 12
- 239000000203 mixture Substances 0.000 claims description 11
- 238000002156 mixing Methods 0.000 claims description 10
- 229910004298 SiO 2 Inorganic materials 0.000 claims description 9
- 230000009919 sequestration Effects 0.000 claims description 9
- 238000001354 calcination Methods 0.000 claims description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 4
- 238000003825 pressing Methods 0.000 claims description 3
- 238000007873 sieving Methods 0.000 claims 1
- 239000004568 cement Substances 0.000 abstract description 29
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 238000005265 energy consumption Methods 0.000 abstract description 2
- 229910052500 inorganic mineral Inorganic materials 0.000 description 11
- 239000011707 mineral Substances 0.000 description 11
- 239000000292 calcium oxide Substances 0.000 description 9
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 9
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 7
- XFWJKVMFIVXPKK-UHFFFAOYSA-N calcium;oxido(oxo)alumane Chemical compound [Ca+2].[O-][Al]=O.[O-][Al]=O XFWJKVMFIVXPKK-UHFFFAOYSA-N 0.000 description 7
- 238000005260 corrosion Methods 0.000 description 6
- 230000007797 corrosion Effects 0.000 description 6
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 5
- 238000001816 cooling Methods 0.000 description 5
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 4
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 4
- 239000011398 Portland cement Substances 0.000 description 4
- 230000000704 physical effect Effects 0.000 description 4
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- 238000005245 sintering Methods 0.000 description 3
- 239000006104 solid solution Substances 0.000 description 3
- 239000004575 stone Substances 0.000 description 3
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000003763 carbonization Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000003912 environmental pollution Methods 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 239000003469 silicate cement Substances 0.000 description 2
- 239000002910 solid waste Substances 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- ULGYAEQHFNJYML-UHFFFAOYSA-N [AlH3].[Ca] Chemical compound [AlH3].[Ca] ULGYAEQHFNJYML-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 description 1
- 239000001506 calcium phosphate Substances 0.000 description 1
- 229910000389 calcium phosphate Inorganic materials 0.000 description 1
- 235000011010 calcium phosphates Nutrition 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 229910052593 corundum Inorganic materials 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000010881 fly ash Substances 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 229910001678 gehlenite Inorganic materials 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000010440 gypsum Substances 0.000 description 1
- 229910052602 gypsum Inorganic materials 0.000 description 1
- 230000036571 hydration Effects 0.000 description 1
- 238000006703 hydration reaction Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 229910001719 melilite Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 229910021487 silica fume Inorganic materials 0.000 description 1
- 229910001467 sodium calcium phosphate Inorganic materials 0.000 description 1
- QORWJWZARLRLPR-UHFFFAOYSA-H tricalcium bis(phosphate) Chemical compound [Ca+2].[Ca+2].[Ca+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O QORWJWZARLRLPR-UHFFFAOYSA-H 0.000 description 1
- 229910009112 xH2O Inorganic materials 0.000 description 1
- 229910001845 yogo sapphire Inorganic materials 0.000 description 1
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
- C04B7/24—Cements from oil shales, residues or waste other than slag
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
A low-carbon cementing material for carbon sealing and cementing and a preparation method thereof. Relates to the technical field of shale gas well cementation chemistry. Comprises the following raw materials in percentage by mass: 15-20% of low-calcium limestone, 45-55% of apatite, 15-29% of bauxite and 5-10% of phosphogypsum. The low-calcium limestone comprises the following chemical components in percentage by mass: siO (SiO) 2 3.0%～12.0%、Al 2 O 3 0.1%～1.5%、Fe 2 O 3 0.2 to 1.5 percent, 36.5 to 43 percent of CaO and 1.0 to 5.0 percent of MgO. The invention reduces carbon emission and energy consumption, and can delay the setting time of cement to a certain extent and reduce the cement production cost.
Description
Technical Field
The invention relates to the technical field of shale gas well cementation chemistry, in particular to a low-carbon cementing material for carbon sequestration well cementation and a preparation method thereof.
Background
In the development of national economy, traditional portland cement plays a vital role and is the most widely used building material. However, conventional Portland cements are not satisfactory for military projects, coastal projectsThe requirements of rapid hardening, outstanding long-term mechanical properties, corrosion resistance, freezing resistance, carbonization resistance and the like are required for construction and protection in special environments such as engineering, island engineering and the like. Meanwhile, in the Portland cement production process, the carbon dioxide emission amount accounts for about 8% of the total global artificial emission amount. For many years, in order to reduce CO 2 Emission and energy conservation, cement scientists at home and abroad are constantly devoted to the research of silicate cement chemistry and cement technology, and the research on cementing materials of other systems is less.
In the prior art, as in the invention patent CN1216003C, a novel aluminophosphate cement is disclosed, which has a different mineral phase from ordinary portland cement, and the main mineral phase is LHss phase (a solid solution of aluminophosphate), calcium Aluminate (CA), alpha-C 3 P (TCP) and a small amount of vitreous. The novel cement has the characteristics of quick hardening, high early strength, low alkali, low carbon emission and the like, and has better durability compared with common silicate cement materials. Because the mineral composition system and the preparation of minerals of the phosphoaluminate cement are not completely known and mastered, the prepared phosphoaluminate cement has insufficient stability, which results in the study of the phosphoaluminate cement being blocked in a stagnation state for a certain period of time. Research and development of low carbon gel material systems has been facilitated.
In order to solve the problems and technical bottlenecks existing in the traditional preparation process of the aluminophosphate cement, in recent years, a person skilled in the art has made intensive studies and put forward a new preparation method, for example, the invention patent document with the application number of 2021107206081 discloses an early-strength special cementing material which comprises the following raw materials in percentage by mass:
30-40% of cementing material A, 40-55% of cementing material B, 1-5% of gypsum, 1-5% of fly ash, 5-20% of mineral powder and 3-10% of silica fume; the cementing material A comprises the following raw materials in percentage by mass: 80-90% of limestone, 5-10% of clay and 2-5% of iron powder; the cementing material B comprises the following raw materials in percentage by mass: 40-50% of limestone, 30-50% of bauxite and 10-30% of apatite; the method is used for solving the problems of reducing the consumption of limestone resources, improving the mechanical property and the durability of the traditional silicate cementing material and the like. The cementing material A in the prior art is mainly silicate cementing material, is easy to generate carbon corrosion at low temperature, and reduces the influence of the strength of cement stone on the later sealing effect. The main minerals of the cementing material B are calcium monoaluminate, calcium dialuminate, dodecacalcium heptaluminate, calcium aluminophosphate solid solution and gehlenite respectively, the cement with higher calcium aluminate has high early strength, and the strength in the later stage (after 7d curing) is not obviously increased.
Disclosure of Invention
Aiming at the problems, the invention provides a low-carbon cementing material for carbon sealing and cementing and a preparation method thereof, which are used for improving carbonization resistance and stability and are better applied to the fields of buildings, roads, bridges and the like.
The technical scheme of the invention is as follows:
the low-carbon cementing material for carbon sealing and cementing comprises the following raw materials in percentage by mass:
15-20% of low-calcium limestone,
45-55% of apatite,
15-29% of bauxite,
5 to 10 percent of phosphogypsum.
Specifically, the low-calcium limestone comprises the following chemical components in percentage by mass:
SiO 2 3.0%～12.0%、
Al 2 O 3 0.1%～1.5%、
Fe 2 O 3 0.2%～1.5%、
CaO 36.5%～43%、
MgO 1.0%～5.0%。
the LOI value of the low-calcium limestone is 44.0% -45.0%.
Specifically, the phosphogypsum comprises the following chemical components in percentage by mass:
SiO 2 2.5%～8.0%、
Al 2 O 3 0.4%～1.0%、
Fe 2 O 3 0.1%～0.4%、
CaO 25.5%～31.5%、
P 2 O 5 0.5%～1.5%、
SO 3 35.0%～43.5%。
the LOI value of the phosphogypsum is 17.0% -22.5%.
Comprises the following clinker in percentage by mass:
SiO 2 5.0%～15.5%、
Al 2 O 3 15.0%-40.0%、
Fe 2 O 3 0.3%-1.0%、
CaO 25.0%-40.0%、
MgO 0.3%-2.0%、
P 2 O 5 20.0%-35.0%、
SO 3 2.0%-3.0%。
the preparation method of the low-carbon cementing material for carbon sealing and cementing comprises the following steps:
step 001, mixing low-calcium limestone, apatite, bauxite and phosphogypsum according to the mixing ratio, and grinding into powder to obtain a powder mixture;
step 002, adding water into the powder mixture to prepare wet raw materials, and pressing through a die;
and 003, placing the pressed sample into a high-temperature furnace, and calcining at 1250-1350 ℃.
Specifically, in step 002, water accounting for 8% -10% of the mass of the powder is added into the ground powder, and the mixture is stirred uniformly to prepare the wet raw material.
Specifically, in step 001, the grinding is that the powder is ground and then passes through a 500-mesh screen.
The invention has the beneficial effects that:
1) The invention adopts low-calcium limestone, which is only one auxiliary correction raw material (15% -20% of mixing amount) and has low requirement on the raw material, on one hand, the content of CaO is reduced from the raw material, the generation of f-CaO in the later period is reduced, and the strength of cement stone is improved. Meanwhile, the low-calcium limestone can be said to be less calcium carbonate, so that the energy consumption is reduced while the carbon emission is reduced.
2) The phosphogypsum is industrial solid waste, and resource recycling is realized by preparing the phosphogypsum cementTherefore, the waste is turned into wealth, and the environmental pollution degree is obviously reduced. In addition, the phosphogypsum can improve grindability and easy pouring property of cement raw materials, and the yield of raw materials and clinker is improved. Meanwhile, the phosphogypsum is utilized to produce the low-carbon cementing material for carbon sealing and cementing, so that P can be provided 2 O 5 The setting time of cement can be delayed to a certain extent, and the cement production cost can be reduced.
3) The cementing material A in the prior art is mainly silicate cementing material, is easy to generate carbon corrosion at low temperature, and reduces the influence of the strength of cement stone on the later sealing effect. The hydration products of the low-carbon cementing material for carbon sealing and cementing are amorphous NaCaPO4.xH2O and Al2O3.yH2O at low temperature. Carbonic acid is less acidic than phosphoric acid, and in theory, the amorphous salt is not CO-bound 2 And (5) corrosion.
4) The main minerals of the cementing material B mentioned in the prior art formula are calcium monoaluminate, calcium dialuminate, dodecacalcium heptaluminate, calcium aluminophosphate solid solution and calcium aluminum melilite respectively, and the clinker mineral phase of the invention consists of ternary Calcium Aluminophosphate (CAP) mineral phase, calcium Aluminate (CA) and calcium phosphate (TCP) and a small amount of glass phase, so that obvious differences exist in raw material proportion, the obtained cementing materials are different, the cementing material B mineral is mainly aluminum phase, and the cementing material has the characteristics of rapid early strength development, slow later strength growth and even inverted shrinkage. Carbonic acid is weaker than phosphoric acid and amorphous salts are not corroded by CO 2. In addition, the calcination temperature of the cementing material in the prior art is 1380-1420 ℃, and the calcination temperature of the cementing material is 1250-1350 ℃, so that the calcination temperature point is greatly reduced. Because phosphogypsum is doped to serve as mineralizer and also contains a small amount of P 2 O 5 Has promoting effect on the absorption of free calcium oxide during production.
5) The raw materials involved in the prior art formula are more, the preparation process of the cementing materials A and B is complex, the raw materials are simple, the preparation process is extremely simple, and the time cost is saved.
Drawings
Figure 1 is an XRD schematic of aluminophosphate cement clinker.
Detailed Description
Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the invention.
The low-carbon cementing material for carbon sealing and cementing comprises the following raw materials in percentage by mass:
15-20% of low-calcium limestone,
45-55% of apatite,
15-29% of bauxite,
5 to 10 percent of phosphogypsum.
The low-calcium limestone is further defined, and comprises the following chemical components in percentage by mass:
SiO 2 3.0%～12.0%、
Al 2 O 3 0.1%～1.5%、
Fe 2 O 3 0.2%～1.5%、
CaO 36.5%～43%、
MgO 1.0%～5.0%。
the LOI value of the low-calcium limestone is 44.0% -45.0%.
Phosphogypsum is further defined, and the phosphogypsum comprises the following chemical components in percentage by mass:
SiO 2 2.5%～8.0%、
Al 2 O 3 0.4%～1.0%、
Fe 2 O 3 0.1%～0.4%、
CaO 25.5%～31.5%、
P 2 O 5 0.5%～1.5%、
SO 3 35.0%～43.5%。
the LOI value of the phosphogypsum is 17.0% -22.5%.
The chemical composition of the raw materials is shown in table 1:
watch (watch)Main chemical composition of raw materials
Comprises the following clinker in percentage by mass as shown in figure 1:
SiO 2 5.0%～15.5%、
Al 2 O 3 15.0%-40.0%、
Fe 2 O 3 0.3%-1.0%、
CaO 25.0%-40.0%、
MgO 0.3%-2.0%、
P 2 O 5 20.0%-35.0%、
SO 3 2.0%-3.0%。
the component proportion of the cement clinker burned according to the raw material proportion, wherein P 2 O 5 The content of 20.0% -35.0% ensures the strength and corrosion resistance of cement.
The preparation method of the low-carbon cementing material for carbon sealing and cementing comprises the following steps:
step 001, mixing low-calcium limestone, apatite, bauxite and phosphogypsum according to the mixing ratio, and grinding to obtain a powder mixture;
in step 001, the grinding is to grind the powder and pass through a 500-mesh screen.
Step 002, adding water into the powder mixture to prepare wet raw materials, and pressing through a die;
in the step 002, water accounting for 8 to 10 percent of the mass of the powder is added into the ground powder and evenly stirred to prepare the wet raw material.
Step 003, placing the pressed sample into a high-temperature furnace, and calcining at 1250-1350 ℃; taking out and cooling at room temperature, and finally crushing and grinding to obtain the low-carbon gel material.
The invention will now be further described with reference to specific examples. It will be clear that the invention is not limited thereby to the described embodiments. All other embodiments, which can be made by a person skilled in the art without any inventive effort, are intended to be within the scope of the present invention, based on the embodiments of the present invention.
Example 1
A preparation method of a low-carbon cementing material for carbon sealing and cementing. The raw materials are mixed according to the proportion: 20% of low-calcium limestone, 52% of apatite, 22% of bauxite and 6% of phosphogypsum, and compacting in a u-shaped mould after uniform mixing. And then placing the sample into a high-temperature furnace, calcining at 1250 ℃, taking out, cooling at room temperature, and finally crushing and grinding to obtain the aluminophosphate cement clinker. The physical properties of the cements of this example are shown in Table 2.
Example 2
A preparation method of a low-carbon cementing material for carbon sealing and cementing. The raw materials are mixed according to the proportion: 15% of low-calcium limestone, 55% of apatite, 20% of bauxite and 10% of phosphogypsum are uniformly mixed and compacted in a u-shaped mould. And then placing the sample into a high-temperature furnace, sintering at 1300 ℃, taking out, cooling at room temperature, and finally crushing and grinding to obtain the aluminophosphate cement clinker. The physical properties of the cements of this example are shown in Table 2.
Example 3
A preparation method of a low-carbon cementing material for carbon sealing and cementing. The raw materials are mixed according to the proportion: mixing low-calcium limestone 20%, apatite 55%, bauxite 15% and phosphogypsum 10%, compacting in u-shaped mould. And then placing the sample into a high-temperature furnace, sintering at 1350 ℃, taking out, cooling at room temperature, and finally crushing and grinding to obtain the aluminophosphate cement clinker. The physical properties of the cements of this example are shown in Table 2.
Example 4
A preparation method of a low-carbon cementing material for carbon sealing and cementing. The raw materials are mixed according to the proportion: mixing low-calcium limestone 19%, apatite 45%, bauxite 29% and phosphogypsum 7%, compacting in a u-type mould. And then placing the sample into a high-temperature furnace, sintering at 1300 ℃, taking out, cooling at room temperature, and finally crushing and grinding to obtain the aluminophosphate cement clinker. The physical properties of the cements of this example are shown in Table 2.
Table 2 shows various physical and chemical performance indexes
Compared with the prior art, the invention has the following beneficial effects:
1. the low-carbon cementing material for carbon sealing and cementing has the characteristics of quick hardening, high early strength, corrosion resistance, low carbon emission and the like, and is suitable for construction engineering serving in special environments, such as construction and protection of military engineering, coastal engineering, island reef engineering and the like.
2. The low-calcium limestone, bauxite and apatite used in the invention are rich minerals in nature, and the raw materials are low in cost and easy to obtain.
3. The phosphogypsum used in the invention is industrial solid waste, and resource recycling is realized by preparing the phosphogypsum cement, so that waste is turned into wealth, and the environmental pollution degree can be obviously reduced.
It should be noted that the above-described embodiments are only for explaining the present invention and do not constitute any limitation of the present invention. The invention has been described with reference to exemplary embodiments, but it is understood that the words which have been used are words of description and illustration, rather than words of limitation. Modifications may be made to the invention as defined in the appended claims, and the invention may be modified without departing from the scope and spirit of the invention. Although the invention is described herein with reference to particular means, materials and embodiments, the invention is not intended to be limited to the particulars disclosed herein, as the invention extends to all other means and applications which perform the same function.
Claims (9)
1. The low-carbon cementing material for carbon sealing and cementing is characterized by comprising the following raw materials in percentage by mass:
15-20% of low-calcium limestone,
45-55% of apatite,
15-29% of bauxite,
5 to 10 percent of phosphogypsum.
2. The low-carbon cementing material for carbon sequestration cementing as claimed in claim 1, wherein the low-calcium limestone comprises the following chemical components in percentage by mass:
SiO 2 3.0%～12.0%、
Al 2 O 3 0.1%～1.5%、
Fe 2 O 3 0.2%～1.5%、
CaO 36.5%～43%、
MgO 1.0%～5.0%。
3. the low-carbon cementing material for carbon sequestration cementing as claimed in claim 1, wherein the low-calcium limestone has an LOI value of 44.0% to 45.0%.
4. The low-carbon cementing material for carbon sequestration cementing as claimed in claim 1, wherein the phosphogypsum comprises the following chemical components in percentage by mass:
SiO 2 2.5%～8.0%、
Al 2 O 3 0.4%～1.0%、
Fe 2 O 3 0.1%～0.4%、
CaO 25.5%～31.5%、
P 2 O 5 0.5%～1.5%、
SO 3 35.0%～43.5%。
5. the low carbon cementing material for carbon sequestration cementing as claimed in claim 1, wherein the phosphogypsum LOI value is 17.0% -22.5%.
6. The low-carbon cementing material for carbon sequestration cementing as claimed in claim 1, which is characterized by comprising the following clinker in percentage by mass:
SiO 2 5.0%～15.5%、
Al 2 O 3 15.0%-40.0%、
Fe 2 O 3 0.3%-1.0%、
CaO 25.0%-40.0%、
MgO 0.3%-2.0%、
P 2 O 5 20.0%-35.0%、
SO 3 2.0%-3.0%。
7. a method for preparing a low carbon cementing material for carbon sequestration cementing as defined in claim 1, comprising the steps of:
step 001, mixing low-calcium limestone, apatite, bauxite and phosphogypsum according to the mixing ratio, and grinding into powder to obtain a powder mixture;
step 002, adding water into the powder mixture to prepare wet raw materials, and pressing through a die;
and 003, placing the pressed sample into a high-temperature furnace, and calcining at 1250-1350 ℃.
8. The method for preparing a low-carbon cementing material for carbon sequestration and cementing according to claim 7, wherein in step 002, 8-10% of water by mass of the powder is added into the ground powder, and the mixture is stirred uniformly to prepare the wet raw material.
9. The method for preparing a low-carbon cementing material for carbon sequestration and cementation as defined in claim 7, wherein in the step 001, the grinding is carried out by grinding to powder and sieving with a 500-mesh sieve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310831552.6A CN117088628A (en) | 2023-07-07 | 2023-07-07 | Low-carbon cementing material for carbon sealing and cementing and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310831552.6A CN117088628A (en) | 2023-07-07 | 2023-07-07 | Low-carbon cementing material for carbon sealing and cementing and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117088628A true CN117088628A (en) | 2023-11-21 |
Family
ID=88768745
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310831552.6A Pending CN117088628A (en) | 2023-07-07 | 2023-07-07 | Low-carbon cementing material for carbon sealing and cementing and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117088628A (en) |
-
2023
- 2023-07-07 CN CN202310831552.6A patent/CN117088628A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR101917017B1 (en) | Rapid-setting and hardening, high-belite sulfoaluminate cement clinker as well as application and production process thereof | |
| Lawrence | The production of low-energy cements | |
| CN113880466B (en) | Method for preparing high-carbonization-activity cementing material by using industrial waste residues | |
| CN111635152B (en) | High belite sulphoaluminate cement clinker and preparation method thereof | |
| CN111393047B (en) | High-iron belite cement and preparation method thereof | |
| WO2012144497A1 (en) | Cement clinker, method for manufacturing same and cement composition | |
| CN108358478B (en) | Method for preparing cementing material by calcining coal gasification slag step by step | |
| CN102765893B (en) | Method for preparing sulphoaluminate special cement clinker from waste residue fluorine gypsum and red mud | |
| CN112608047B (en) | Modified sulphoaluminate cement and preparation method and application thereof | |
| CN115677243B (en) | Preparation method of low-carbon cement clinker | |
| CN109133684A (en) | A kind of high iron belite aluminate cement clinker and preparation method thereof | |
| CN105502973A (en) | Calcium-poor and silicon-rich ecological cement and application thereof | |
| CN104402270A (en) | High-calcium coal ash cement and preparation method thereof | |
| CN113354311A (en) | Resource-saving low-carbon cement clinker and preparation method thereof | |
| CN101885589A (en) | Compound sulfate cement | |
| CN104556909A (en) | Fast-setting anti-corrosion cement using coal ash as raw material and preparation method thereof | |
| GB2607658A (en) | Method for preparing calcium sulphosilicate-dicalcium silicate-calcium sulphoaluminate system from calcium carbide slag and method for improving late-stage | |
| CN114988791A (en) | Flue grouting material doped with sulfur-rich lithium slag and preparation method and application thereof | |
| CN108383403A (en) | A kind of calcined clay type sulphate aluminium cement gel rubber material | |
| CN114956642B (en) | Composite expanding agent based on regenerated micro powder and preparation method thereof | |
| CN1733641A (en) | Silicate cement and its production method | |
| CN106242326B (en) | By SiO2Method for preparing ecological cement by using main raw materials | |
| CN117088628A (en) | Low-carbon cementing material for carbon sealing and cementing and preparation method thereof | |
| Tiwari et al. | Relative evaluation of performance of limestone calcined clay cement compared with Portland pozzolana cement | |
| CN112250330B (en) | Green environment-friendly cement 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 |