CN1657465A - Composite cement with less clinker and its production method - Google Patents
Composite cement with less clinker and its production method Download PDFInfo
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- CN1657465A CN1657465A CN2005100458646A CN200510045864A CN1657465A CN 1657465 A CN1657465 A CN 1657465A CN 2005100458646 A CN2005100458646 A CN 2005100458646A CN 200510045864 A CN200510045864 A CN 200510045864A CN 1657465 A CN1657465 A CN 1657465A
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- cement
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/10—Production of cement, e.g. improving or optimising the production methods; Cement grinding
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
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- Processing Of Solid Wastes (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
A composite cement containing less clinker is proportionally preparing silicate clinker, slags, powdered coal ash, additive, and reinforcing composite gypsum prepared from solina gypsum, bihydrated graphite or anhydrous gypsum, alkaline trigger, and grinding aid. Its advantages are less consumption of silicate clinker and high strength.
Description
Technical field
The invention belongs to building material technical field, be specifically related to a kind of by the small amounts of silicate grog, slag, flyash and Additive that admixture is a large amount of, and add have enhancing, composite cement with less clinker and production method thereof that enhancing composite gypsum that function is coagulated in grinding aid, accent is formed.
Background technology
In the six big general cement that cement production enterprise is produced by national Specification, its raw material is usually based on portland cement clinker, add blended materials such as an amount of slag, flyash, volcanic ash, and allocate a spot of dihydrate gypsum or dehydrated gyp-etc. into, often the grog addition content is big, cause a large amount of energy dissipations and to the pollution of environment, the latency that influences intensity that blended material had is not given full play of, the cement cost of being produced is higher.For addressing this problem, product innovations such as a lot of grinding aids, hardening accelerator have obtained application within the specific limits.But use the small amounts of silicate grog, add blended materials such as a large amount of slags, flyash, volcanic ash, zeolite, the technology of class g cements such as production high strength also seldom, employed gypsum only has the effect with fixed attention of transferring.The invention provides a kind of composite cement with less clinker and production method thereof, and utilize and a kind ofly have the effect of coagulating of enhancing, grinding aid and accent simultaneously and strengthen composite gypsum, the gypsum that has replaced original use, do not changing under original cement production process situation, the few grog polyhybrid material of real realization is produced the complex cement purpose, make cement production enterprise reduce the manufacture of cement cost, increase economic efficiency.
Summary of the invention
The invention provides a kind of composite cement with less clinker and production method thereof, the component of this cement (weight percent) is:
Grog 30-60 slag 20-25
Flyash 20-30 Additive 8-30
Composite gypsum 3-6
Above-mentioned each component sum should satisfy 100%.
In this cement, portland cement clinker mainly provides competent CaO mineralogical composition, and in hydrated reaction of cement, produces a certain amount of Ca (OH)
2, other blended material is produced the alkaline excitation effect, the grog ultimate compression strength of generally selecting for use should be more than 50MPa.
Slag is a kind of importantly hydraulic cementing materials, and a large amount of SiO mainly is provided
2Mineralogical composition has stronger hydraulically active.
Flyash is the stronger gelling material of a kind of hydraulicity, contains silicon, aluminium component in large quantities, is mainly used in to adjust the required Al of cement
2O
3Mineralogical composition.
The optional usefulness of Additive has certain hydraulically active material, and as boiling furnace slag, volcanic ash and zeolite etc., other is furnished with a certain amount of Wingdale.Be mainly used in replenishing and reduction manufacture of cement cost of cement composition.According to the needs of material source cost and cement composition, outside the delime stone, other must alternative use one or more.The proportion scale of Additive (weight percent) is: Wingdale 25-50, volcanic ash 0-35, zeolite 0-35, boiling furnace slag 0-35, various material summations should be 100%.
It is formulated by saline gypsum, natural dihydrate gypsum or dehydrated gyp-, alkali-activator and grinding aid strengthening composite gypsum, has the effect that enhancing, grinding aid, accent are coagulated, and its component (weight percent) is:
Saline gypsum 60-70 dihydrate gypsum 20-30
Exciting agent 10-13 grinding aid 0.15-0.25
Each component sum should be 100%.Wherein saline gypsum and natural dihydrate gypsum or dehydrated gyp-are mainly used in the adjusting cement setting time, because saline gypsum is an xln, when hydrated cementitious, speed of response is fast, can form ettringite fast, improve cement early strength; Exciting agent is made up of anhydrous sodium sulphate, water glass, washing salt waste material, when hydrated cementitious, can form sodium ion fast, produce strong basicity, be used for replenishing grog and reduce the hypoalkalinity of being brought, because alkaline excitation can make the hydraulically active of slag, flyash and Additive play a role fast, improve strength of cement simultaneously; Grinding aid can be selected one or more among trolamine, three b propanol amine, the Tetrahydroxyethyl ethylenediamine for use, plays the grinding aid effect, is used to improve grinding efficiency.
The production method that the invention provides a kind of composite cement with less clinker is: at first grog, Additive are crushed to granularity respectively below 5 centimetres, slag, flyash is dry respectively, press the cement component batching then, enter grinding machine, being milled to screen over-size (0.08 millimeter standard sieve) is 3%-5%, and specific surface area is 300-400m
2/ kg can put in storage.
Characteristics of the present invention are: according to the needs of cement composition, scientific and reasonable batching under the effect that strengthens composite gypsum, has reduced the addition content of grog, has given full play to the effect of blended material.Compare with traditional method, if the complex cement of production same intensity grade can reduce grog addition content 20%-30%, if use identical grog addition content, ultimate compression strength can improve 4-5MPa in 3 days, can improve 3-6MPa in 28 days, and folding strength improves more obvious; Be easy to control time of coagulation, initial set 1-5 hour, final set 2-6 hour, all other indexs all meet the complex cement national standard.Can obviously reduce the manufacture of cement cost, increase economic efficiency.
Embodiment
The production intensity grade is the 27.5MPa masonry cement, embodiment:
Table 1 is that three groups of production intensity grades are 27.5MPa masonry cement proportioning.
Table 1 production intensity grade 27.5MPa masonry cement proportioning (weight %)
| Sequence number | Grog | Slag | Flyash | Additive | Complex cement |
| ????1 | ????30 | ????15 | ????30 | ????29 | ????6 |
| ????2 | ????30 | ????25 | ????25 | ????15 | ????4 |
| ????3 | ????35 | ????20 | ????20 | ????22 | ????3 |
Production method is: at first grog, Additive are crushed to granularity respectively below 5 centimetres, and slag, flyash is dry respectively, press the cement component batching then, enter grinding machine, being milled to screen over-size (0.08mm standard sieve) is 3%-5%, specific surface area is 300-400m
2/ kg can put in storage.
The described three groups of corresponding salient featuress of masonry cement proportioning of table 1 see Table 2.
Table 2 production intensity grade 27.5MPa masonry cement salient features
| Sequence number | Time of coagulation | Stability | Ultimate compression strength (MPa) | Folding strength (MPa) | |||||
| Initial set | Final set | 3 days | 7 days | 28 days | 3 days | 7 days | 28 days | ||
| ??1 | ?2:05 | ?3:25 | Qualified | ??- | 18.2 | ?31.5 | ??- | ?4.5 | ?6.8 |
| ??2 | ?1:35 | ?2:50 | Qualified | ??- | 17.9 | ?32.5 | ??- | ?4.0 | ?7.0 |
| ??3 | ?1:10 | ?2:20 | Qualified | ??- | 19.0 | ?33.2 | ??- | ?4.8 | ?7.0 |
The production intensity grade is the 32.5MPa composite cement with less clinker, embodiment:
Table 3 is that three groups of production intensity grades are 32.5MPa complex cement proportioning.
Table 3 production intensity grade 32.5MPa complex cement proportioning (weight %)
| Sequence number | Grog | Slag | Flyash | Additive | Complex cement |
| ????1 | ????45 | ????25 | ????20 | ????4 | ????6 |
| ????2 | ????50 | ????20 | ????15 | ????10 | ????5 |
| ????3 | ????60 | ????20 | ????15 | ????2 | ????3 |
Production method is: at first grog, Additive are crushed to granularity respectively below 5 centimetres, and slag, flyash is dry respectively, press the cement component batching then, enter grinding machine, being milled to screen over-size (0.08mm standard sieve) is 3%-5%, specific surface area is 300-400m
2/ kg can put in storage.
The described three groups of corresponding salient featuress of complex cement proportioning of table 3 see Table 4.
Table 4 production intensity grade 32.5MPa complex cement salient features
| Sequence number | Time of coagulation | Stability | Ultimate compression strength (MPa) | Folding strength (MPa) | |||||
| Initial set | Final set | 3 days | 7 days | 28 days | 3 days | 7 days | 28 days | ||
| ?1 | ?3:40 | ?4:35 | Qualified | 21.3 | ??- | ?38.0 | ?4.5 | ??- | ?7.2 |
| ?2 | ?3:10 | ?4:30 | Qualified | 22.0 | ??- | ?39.9 | ?4.3 | ??- | ?7.5 |
| ?3 | ?2:30 | ?4:20 | Qualified | 23.5 | ??- | ?43.2 | ?3.9 | ??- | ?7.0 |
Claims (3)
1, a kind of composite cement with less clinker and production method thereof is characterized in that the component of this cement is:
Grog 30-60 slag 20-25
Flyash 20-30 Additive 8-30
Composite gypsum 3-6 is by weight percentage above-mentioned, each component sum should be 100%, this Cement Production method is: at first grog, Additive are crushed to granularity respectively below 5 centimetres, slag, flyash is dry respectively, press the cement component batching then, enter grinding machine, being milled to screen over-size (0.08mm standard sieve) is 3%-5%, and specific surface area is 300-400m
2/ kg can put in storage.
2, composite cement with less clinker as claimed in claim 1 and production method thereof is characterized in that the composite gypsum component is:
Saline gypsum 60-70 dihydrate gypsum 20-30
0.15-0.25 is by weight percentage above-mentioned for exciting agent 10-13 grinding aid, and each component sum should be 100%.Wherein dihydrate gypsum can be used a kind of replacement among semi-hydrated gypsum, dehydrated gyp-, the phosphogypsum.
3, composite cement with less clinker as claimed in claim 1 and production method thereof, it is characterized in that Additive is Wingdale, boiling furnace slag, volcanic ash and zeolite, needs according to material source cost and strength of cement grade, delime stone accounts for outside the 25%-50% of Additive, and other need be selected else and use one or more.
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| CN2005100458646A CN1657465A (en) | 2005-02-04 | 2005-02-04 | Composite cement with less clinker and its production method |
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| CN2005100458646A CN1657465A (en) | 2005-02-04 | 2005-02-04 | Composite cement with less clinker and its production method |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102815877A (en) * | 2012-07-31 | 2012-12-12 | 中国石油天然气集团公司 | High-grade general portland cement admixing limestone and zeolite |
| CN104072073A (en) * | 2013-12-30 | 2014-10-01 | 浙江三狮集团特种水泥有限公司 | Anti-erosion MEC maritime work cement-base composite material and preparation method thereof |
| US9034098B2 (en) | 2011-01-28 | 2015-05-19 | Lafarge | Hydraulic binder with low clinker content |
| CN105271846A (en) * | 2015-09-16 | 2016-01-27 | 邱如新 | Alkali slag cement production technology |
| CN107344818A (en) * | 2016-05-06 | 2017-11-14 | 大老板水泥有限公司 | Additive and the method using the Additive Production cement composition |
| CN108358481A (en) * | 2018-03-06 | 2018-08-03 | 济南大学 | A kind of weathering fine sand batholith cement and preparation method thereof |
| CN113213788A (en) * | 2021-03-25 | 2021-08-06 | 内蒙古宏尔高新材料科技有限公司 | Composite cement with few silicate clinker components and preparation method thereof |
| CN113563005A (en) * | 2021-07-15 | 2021-10-29 | 内蒙古宏尔高新材料科技有限公司 | Special exciting agent for composite cement with few silicate clinker components and preparation method thereof |
| CN113845320A (en) * | 2021-09-23 | 2021-12-28 | 中建材创新科技研究院有限公司 | Plaster of paris and preparation method thereof |
-
2005
- 2005-02-04 CN CN2005100458646A patent/CN1657465A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9034098B2 (en) | 2011-01-28 | 2015-05-19 | Lafarge | Hydraulic binder with low clinker content |
| CN102815877A (en) * | 2012-07-31 | 2012-12-12 | 中国石油天然气集团公司 | High-grade general portland cement admixing limestone and zeolite |
| CN104072073A (en) * | 2013-12-30 | 2014-10-01 | 浙江三狮集团特种水泥有限公司 | Anti-erosion MEC maritime work cement-base composite material and preparation method thereof |
| CN105271846A (en) * | 2015-09-16 | 2016-01-27 | 邱如新 | Alkali slag cement production technology |
| CN107344818A (en) * | 2016-05-06 | 2017-11-14 | 大老板水泥有限公司 | Additive and the method using the Additive Production cement composition |
| CN108358481A (en) * | 2018-03-06 | 2018-08-03 | 济南大学 | A kind of weathering fine sand batholith cement and preparation method thereof |
| CN113213788A (en) * | 2021-03-25 | 2021-08-06 | 内蒙古宏尔高新材料科技有限公司 | Composite cement with few silicate clinker components and preparation method thereof |
| CN113563005A (en) * | 2021-07-15 | 2021-10-29 | 内蒙古宏尔高新材料科技有限公司 | Special exciting agent for composite cement with few silicate clinker components and preparation method thereof |
| CN113845320A (en) * | 2021-09-23 | 2021-12-28 | 中建材创新科技研究院有限公司 | Plaster of paris and preparation method thereof |
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