CN110606678A - Portland cement - Google Patents
Portland cement Download PDFInfo
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- CN110606678A CN110606678A CN201910906450.XA CN201910906450A CN110606678A CN 110606678 A CN110606678 A CN 110606678A CN 201910906450 A CN201910906450 A CN 201910906450A CN 110606678 A CN110606678 A CN 110606678A
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- parts
- waste residue
- calcined material
- basalt
- cement
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- 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
- C04B7/28—Cements from oil shales, residues or waste other than slag from combustion residues, e.g. ashes or slags from waste incineration
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/10—Production of cement, e.g. improving or optimising the production methods; Cement grinding
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Combustion & Propulsion (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention relates to portland cement, and belongs to the technical field of building materials. The paint comprises the following raw materials in parts by weight: 76-80 parts of clinker, 2-5 parts of modified phosphogypsum, 3-6 parts of coal-fired furnace slag, 5-7 parts of limestone, 4-7 parts of basalt and 3-7 parts of waste residue calcined material. The invention adopts the waste residue calcined material to replace part of basalt, and solves the problems of no local landfill of domestic and industrial waste residues, high treatment cost and great environmental pollution; and the waste residue calcined material replaces part of basalt to produce cement, so that the cement batching cost is reduced by at least 1.02 yuan/ton under the condition that the cement stability is qualified, and the capital can be saved by at least 112.2 yuan per 110 million tons of cement produced every year. In addition, the waste residue calcined material is more easily ground than basalt, so that the yield is improved by 3 tons/h, the production efficiency of cement is improved, the energy consumption is reduced, and the economic benefit of an enterprise is effectively improved.
Description
Technical Field
The invention relates to portland cement, and belongs to the technical field of building materials.
Background
Portland cement is an important raw material for industrial and civil construction, basalt serving as one of cement raw materials is in shortage more and more along with the lapse of time, the price is higher and higher, the price is increased from 40 yuan/ton to 60 yuan/ton or even higher, the production cost of the cement is higher and higher, and the active search for a basalt substitute or a partial substitute becomes a problem to be solved urgently.
As is well known, domestic and industrial waste residues are some wastes generated in life and production of people, and at present, the domestic waste residues are treated in a landfill mode or a field combustion mode, so that the treatment cost is high, and the environmental pollution is also high. Therefore, how to effectively and reasonably treat and utilize the domestic waste residue, change waste into valuables, turn harm into benefit, save energy and resources is a problem which needs to be solved urgently at present.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention aims to provide Portland cement which adopts a product (waste residue calcined material) obtained after combustion of domestic and industrial waste residues as a filler. The cement has the advantages of low cost, no toxicity, no harm, good stability and the like.
In order to achieve the purpose, the invention adopts the following technical scheme: the portland cement is composed of the following raw materials in parts by weight: 76-80 parts of clinker, 2-5 parts of modified phosphogypsum, 3-6 parts of coal-fired furnace slag, 5-7 parts of limestone, 4-7 parts of basalt and 3-7 parts of waste residue calcined material.
In the technical scheme, 77 parts of clinker, 4 parts of modified phosphogypsum, 3 parts of coal-fired furnace slag, 6 parts of limestone, 5 parts of basalt and 5 parts of waste residue calcined material are preferably selected.
In the technical scheme, the waste residue calcined material is obtained by calcining domestic and/or industrial waste residue in a kiln at the temperature of 1000-1200 ℃, and then carrying out iron removal, impurity removal, water washing and particle size treatment, wherein the Loss content in the waste residue calcined material is less than 10%.
In the above technical scheme, preferably, the waste residue calcined material is obtained by calcining domestic and/or industrial waste residue in a kiln at 1100 ℃, and then removing iron, impurities, washing with water and performing particle size treatment, wherein SiO in the waste residue calcined material225-40% of Al2O35 to 12 percent of Fe2O31-7 percent of CaO, 15-30 percent of CaO, 2-6 percent of MgO and SO3The content is 0.5-1.5%.
Compared with the prior art, the invention has the following beneficial effects due to the adoption of the technical scheme:
the invention adopts the waste residue calcined material to replace part of basalt, and solves the problems of no local landfill of domestic and industrial waste residues, high treatment cost and great environmental pollution; and the waste residue calcined material replaces partial basalt to produce cement, so that the cement batching cost is reduced by at least 1.02 yuan/ton under the condition that all indexes of the cement are qualified, and the capital can be saved by at least 112.2 yuan for producing 110 million tons of cement per year. In addition, the waste residue calcined material is more easily ground than basalt, so that the yield is improved by 3 tons/h, the production efficiency of cement is improved, the energy consumption is reduced, and the economic benefit of an enterprise is effectively improved.
Detailed Description
The invention will be further illustrated with reference to the following specific examples:
example 1
The portland cement is composed of the following raw materials in parts by weight: 76 parts of clinker, 5 parts of modified phosphogypsum, 3 parts of coal-fired furnace slag, 5 parts of limestone, 4 parts of basalt and 7 parts of waste residue calcined material. The waste residue calcined material is obtained by calcining domestic waste residue in a kiln at the temperature of 1000 ℃, and then carrying out iron removal, impurity removal, water washing and particle size treatment, wherein the Loss amount in the waste residue calcined material is 8.92%. SiO in the waste residue calcined material2Content of 39.28% Al2O310.2% of Fe2O36.83% of CaO, 27.5% of MgO, 4.27% of SO3The content is 1.12%.
Example 2
The portland cement is composed of the following raw materials in parts by weight: 77 parts of clinker, 4 parts of modified phosphogypsum, 3 parts of coal-fired furnace slag, 6 parts of limestone, 5 parts of basalt and 5 parts of waste residue calcined material. The waste residue calcined material is obtained by calcining domestic and industrial waste residues in a kiln at 1100 ℃, and then carrying out iron removal, impurity removal, water washing and particle size treatment, wherein the Loss amount in the waste residue calcined material is 6.38%. SiO in the waste residue calcined material2Content 38.58%, AL2O39.82% of Fe2O37.21% of CaO, 29.30% of MgO, 4.35% of SO3The content is 0.98%.
Example 3
The portland cement is composed of the following raw materials in parts by weight: 80 parts of clinker, 2 parts of modified phosphogypsum, 4 parts of coal-fired furnace slag, 5 parts of limestone, 6 parts of basalt and 3 parts of waste residue calcined material. The waste residue calcined material is obtained by carrying out iron removal, impurity removal, water washing and particle size treatment on industrial waste residue after calcining the industrial waste residue in a kiln at 1200 ℃, wherein the Loss amount in the waste residue calcined material is 8.54%. SiO in the waste residue calcined material2Content of 39.48% Al2O310.70% of Fe2O36.23% of CaO, 27.4% of MgO, 3.27% of SO3The content was 1.32%.
To further illustrate the effects of the present invention, the following examples are given:
the requirements of qualified cement are as follows: the 3-day flexural strength is more than 3.5Mpa, and the 28-day flexural strength is more than 6.5 Mpa; the compressive strength is more than 17Mpa in 3 days, and the flexural strength is more than 42.5Mpa in 28 days; activity index requirement for 28 days: the limestone activity index is more than or equal to 70, the slag property index of the coal-fired furnace is more than 65, and the basalt activity index is more than 65.
A reference group (conventional production ratio) and three experimental groups (waste residue calcined material replaces part of basalt) are selected to carry out small grinding and large grinding tests and activity tests for comparison:
1) preparing materials:
the ingredients of the control group are shown in Table 1
TABLE 1
Experimental group one ingredients are shown in Table 2
TABLE 2
The ingredients of the experimental group II are shown in Table 3
TABLE 3
The three ingredients of the experimental group are shown in Table 4
TABLE 4
2) Mill experiment
The control group and three experimental groups are subjected to small grinding test
A) Index analysis is shown in Table 5
TABLE 5
| Group of | Variety of (IV) C | Loss(％) | CaO(％) | MgO(％) | SO3(％) |
| Control group | PO42.5 | 4.00 | 55.04 | 2.07 | 3.33 |
| Experiment set 1 | PO42.5 | 3.93 | 55.08 | 2.63 | 3.26 |
| Experiment group two | PO42.5 | 3.90 | 54.97 | 2.53 | 3.29 |
| Experiment group III | PO42.5 | 3.90 | 55.37 | 2.41 | 2.46 |
B) Physical tests are shown in table 6:
TABLE 6
| Group of | Fineness 0.045 | Proportion table | Consistency of | Initial setting | Final setting | Stability of | 3 days fracture resistance | Resisting fracture in 28 days | 3 days compression resistance | 28 days compression resistance |
| Control group | 7.0 | 330 | 26.8 | 210 | 260 | Qualified | 5.5 | 8.7 | 29.5 | 52.3 |
| Experiment set 1 | 7.1 | 334 | 26.8 | 218 | 259 | Qualified | 5.6 | 8.7 | 29.8 | 52.6 |
| Experiment group two | 7.1 | 332 | 26.8 | 223 | 271 | Qualified | 5.5 | 8.8 | 29.9 | 52.7 |
| Experiment group III | 7.0 | 327 | 26.7 | 197 | 243 | Qualified | 6.0 | 8.9 | 30.9 | 53.4 |
Conclusion of the small mill test: as can be seen from Table 6, the 3-day flexural strengths of the three experimental groups are respectively 5.6, 5.5 and 6.0MPa, which are far greater than 3.5 MPa; the 28-day breaking strength is respectively more than 8.7, 8.8 and 8.9Mpa and far more than 6.5 Mpa;
the 3-day compressive strength is respectively 29.8, 29.9 and 30.9Mpa which are far more than 17 Mpa; the 28-day breaking strength is 52.6 MPa, 52.7 MPa and 53.4MPa which are far more than 42.5 MPa.
Therefore, the small grinding experiment meets the requirements of 3 days and 28 days on fracture resistance and compression resistance.
3) Experiment of large mill
Performing large grinding test on the control group and the experimental group
A) Index analysis is shown in Table 7
TABLE 7
C) Physical tests are shown in table 8:
TABLE 8
Conclusion of the Large Mill experiment: as can be seen from Table 8, the yield of each mill is increased by 3 tons/hr, and the relative grindability of the waste residue calcined material is better than that of basalt. The yield is improved, and the energy consumption is reduced.
The 3-day rupture strengths of the three experimental groups are respectively 4.8, 4.8 and 5.5Mpa which are far more than 3.5 Mpa; the 28-day breaking strength is respectively 8.6, 8.6 and 8.9Mpa which are far more than 6.5 Mpa;
the 3-day compressive strength is respectively 29.2, 29.2 and 30.2Mpa which are far more than 17 Mpa; the 28-day breaking strength is respectively 52.1, 52.9 and 53.9Mpa, which is far more than 42.5 Mpa.
Therefore, the large grinding experiment meets the requirements of 3 days and 28 days on fracture resistance and compression resistance.
4) The activity test of the control group is shown in Table 9
TABLE 9
| Name of material | Activity index of 28 days |
| Limestone | 70.0 |
| Coal-fired furnace slag | 68.8 |
| Basalt rock | 69.1 |
| Waste residue calcined material | 69.2 |
Experimental group one Activity test is shown in Table 10
Watch 10
| Name of material | Activity index of 28 days |
| Limestone | 70.0 |
| Coal-fired furnace slag | 68.7 |
| Basalt rock | 69.2 |
| Waste residue calcined material | 69.2 |
Experimental group two Activity assays are shown in Table 11
TABLE 11
| Name of material | Activity index of 28 days |
| Limestone | 70.0 |
| Coal-fired furnace slag | 68.7 |
| Basalt rock | 68.2 |
| Waste residue calcined material | 68.7 |
Experimental group three activity tests are shown in Table 12
TABLE 12
| Name of material | Activity index of 28 days |
| Limestone | 70.0 |
| Coal-fired furnace slag | 68.8 |
| Basalt rock | 68.2 |
| Waste residue calcined material | 68.6 |
Conclusion of the activity experiment: the 28-day activity indexes of limestone, coal-fired furnace slag and basalt in the three experimental groups all meet the requirements that the activity index of limestone is more than or equal to 70, the slag property index of the coal-fired furnace is more than 65 and the activity index of basalt is more than 65, the 28-day activity index of the waste residue calcined material in the first experimental group is 69.2, the 28-day activity index of the waste residue calcined material in the second experimental group is 68.7, and the 28-day activity index of the waste residue calcined material in the third experimental group is 68.6, which are all greater than the activity index requirements of basalt 65, so that the waste residue calcined material can be used for replacing basalt. The waste residue calcined material is qualified, and meets various indexes of cement production requirements.
According to test data, the waste residue calcined material can replace at least half of basalt, the batching cost is reduced by at least 1.02 yuan/ton, and the capital can be saved by at least 112.2 yuan for producing 110 million tons of cement per year.
Claims (4)
1. The portland cement is characterized by comprising the following raw materials in parts by weight: 76-80 parts of clinker, 2-5 parts of modified phosphogypsum, 3-6 parts of coal-fired furnace slag, 5-7 parts of limestone, 4-7 parts of basalt and 3-7 parts of waste residue calcined material.
2. The portland cement of claim 1, comprising the following raw materials in parts by weight: 77 parts of clinker, 4 parts of modified phosphogypsum, 3 parts of coal-fired furnace slag, 6 parts of limestone, 5 parts of basalt and 5 parts of waste residue calcined material.
3. The portland cement according to claim 1 or 2, wherein the waste residue calcined material is obtained by calcining domestic and/or industrial waste residue in a kiln at 1000-1200 ℃, and then performing iron removal, impurity removal, water washing and particle size treatment, wherein the Loss content in the waste residue calcined material is less than 10%.
4. The portland cement of claim 3, wherein the waste residue calcined material is obtained by calcining domestic and/or industrial waste residue in a kiln at 1100 ℃, removing iron, impurities, washing with water, and performing particle size treatment, wherein SiO in the waste residue calcined material2In an amount of25％～40％、AL2O35 to 12 percent of Fe2O31-7 percent of CaO, 15-30 percent of CaO, 2-6 percent of MgO and SO3The content is 0.5-1.5%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910906450.XA CN110606678A (en) | 2019-09-24 | 2019-09-24 | Portland cement |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910906450.XA CN110606678A (en) | 2019-09-24 | 2019-09-24 | Portland cement |
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| CN110606678A true CN110606678A (en) | 2019-12-24 |
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| CN201910906450.XA Pending CN110606678A (en) | 2019-09-24 | 2019-09-24 | Portland cement |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112608046A (en) * | 2020-11-21 | 2021-04-06 | 河北京兰水泥有限公司 | Coal-fired furnace slag composite mixed material and preparation method and application thereof |
Citations (5)
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| CN1092391A (en) * | 1994-01-31 | 1994-09-21 | 连云港市白塔水泥厂 | The production method of cement doped active materials |
| CN101142036A (en) * | 2005-03-16 | 2008-03-12 | 太平洋水泥株式会社 | Fired product |
| CN102464458A (en) * | 2011-11-28 | 2012-05-23 | 泸州兰良水泥有限公司 | Method and equipment for calcining blending material with high activity by feeding out of kiln head |
| CN104591564A (en) * | 2015-01-06 | 2015-05-06 | 清水河县蒙西水泥有限公司 | Burnt rock cement mixture and burnt rock cement |
| CN109354423A (en) * | 2018-11-07 | 2019-02-19 | 富蕴天山水泥有限责任公司 | A kind of clinker portland cement and preparation method thereof |
-
2019
- 2019-09-24 CN CN201910906450.XA patent/CN110606678A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1092391A (en) * | 1994-01-31 | 1994-09-21 | 连云港市白塔水泥厂 | The production method of cement doped active materials |
| CN101142036A (en) * | 2005-03-16 | 2008-03-12 | 太平洋水泥株式会社 | Fired product |
| CN102464458A (en) * | 2011-11-28 | 2012-05-23 | 泸州兰良水泥有限公司 | Method and equipment for calcining blending material with high activity by feeding out of kiln head |
| CN104591564A (en) * | 2015-01-06 | 2015-05-06 | 清水河县蒙西水泥有限公司 | Burnt rock cement mixture and burnt rock cement |
| CN109354423A (en) * | 2018-11-07 | 2019-02-19 | 富蕴天山水泥有限责任公司 | A kind of clinker portland cement and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 谢燕等: "生活垃圾焚烧炉渣用作水泥混合材的研究", 《华南理工大学学报（自然科学版）》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112608046A (en) * | 2020-11-21 | 2021-04-06 | 河北京兰水泥有限公司 | Coal-fired furnace slag composite mixed material and preparation method and application thereof |
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