CN109336424A - A kind of 42.5 method for production of cement of slow setting and application - Google Patents
A kind of 42.5 method for production of cement of slow setting and application Download PDFInfo
- Publication number
- CN109336424A CN109336424A CN201811294423.3A CN201811294423A CN109336424A CN 109336424 A CN109336424 A CN 109336424A CN 201811294423 A CN201811294423 A CN 201811294423A CN 109336424 A CN109336424 A CN 109336424A
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- CN
- China
- Prior art keywords
- cement
- production
- slow setting
- slag
- desulfurized gypsum
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- 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.)
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Classifications
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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
- C04B7/26—Cements from oil shales, residues or waste other than slag from raw materials containing flue dust, i.e. fly ash
-
- 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
- C04B7/14—Cements containing slag
- C04B7/147—Metallurgical slag
- C04B7/153—Mixtures thereof with other inorganic cementitious materials or other activators
- C04B7/17—Mixtures thereof with other inorganic cementitious materials or other activators with calcium oxide containing activators
- C04B7/19—Portland 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
-
- 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)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The present invention provides a kind of 42.5 method for production of cement of slow setting and application, is related to cement technology field.A kind of 42.5 method for production of cement of slow setting, it include: to mix desulfurized gypsum, Portland clinker and slag, add edible sugar, flyash and grinding aid, after ball milling selects powder, enter cement bunker, outbound after the preceding gas first carried out in discharge air accumulator of blowing homogenizing, high pressure blowing homogenizing by bag collector.By mass percentage, Portland clinker is 76~80%, and desulfurized gypsum is 2~8%, and slag is 2~8%, and flyash is 10~14%, and edible sugar is 0.001~0.035%, and grinding aid is 0.01~0.05%.The production method process flow is simple, is able to solve slow setting cement initial set and the short problem of final setting time, while cement has preferable pressure-proof and snap-resistent performance.
Description
Technical field
The present invention relates to cement technology fields, and in particular to a kind of 42.5 method for production of cement of slow setting and application.
Background technique
With the fast development that transportation modernization is built, expressway construction is made remarkable achievements, by engineering
Novel traffic construction material needed for property ----express highway roadbed ecological slow setting cement increases the technological element of a product, opens up
Wide market, makes the competitiveness of product and Business Economic Benefit all be improved largely.
Requirement performance of the highway construction bed course to slow setting cement is continuously improved, in Modern New dry-process production line manufacture of cement
The cement grinding mill of line configuration is the joint closed-circuit grinding system Challenge with roll squeezer, and 42.5 slow setting cement of production meet
40 DEG C of Xinjiang desert areas high temperature season or more construction environment, it is desirable that 42.5 slow setting cement initial sets are greater than 4.50h, and final set is greater than
6.50 are less than 10.00h, are greater than within strength of cement three days 24.0Mpa, compression strength is greater than 42.5Mpa within 28 days；Cement is anti-
It is greater than within folding intensity three days 5.0Mpa, flexural strength is greater than 8.0Mpa within 28 days.Under normal condition, the product of cement production enterprise is difficult to
Reach such technical requirements.
Summary of the invention
The purpose of the present invention is to provide a kind of 42.5 method for production of cement of slow setting, and process flow is simple, is able to solve slow
The initial set of condensate mud and the short problem of final setting time, while cement has preferable pressure-proof and snap-resistent performance.
The present invention solves its technical problem and adopts the following technical solutions to realize.
The present invention proposes a kind of 42.5 method for production of cement of slow setting, including
Desulfurized gypsum, Portland clinker and slag are mixed, edible sugar, flyash and grinding aid are added
Agent enters cement bunker by bag collector, gas, height in discharge air accumulator is first carried out before blowing homogenizing after ball milling selects powder
Press outbound after material is homogenized.
By mass percentage, Portland clinker be 76~80%, desulfurized gypsum be 2~8%, slag be 2~
8%, flyash is 10~14%, and edible sugar is 0.001~0.035%, and grinding aid is 0.01~0.05%.
The beneficial effect comprise that
The present invention uses desulfurized gypsum, Portland clinker, slag, edible sugar, flyash and grinding aid for original
Material adjusts the proportion between raw material, and the slow setting cement with longer presetting period and final setting time, initial set is made by production method
Time is greater than 360min, and final setting time is greater than 420min.The slow setting cement has preferable resistance to compression and fracture resistance, compression strength
It is greater than within three days 24.0Mpa, compression strength is greater than 53Mpa within 28 days；Bending strength of cement three days be greater than 5.0Mpa, 28 days
Flexural strength is greater than 8.0Mpa.The production method less energy-consuming, water consumption is few, economizes on resources and the energy, reduces production cost.
Detailed description of the invention
In order to illustrate the technical solution of the embodiments of the present invention more clearly, below will be to needed in the embodiment attached
Figure is briefly described, it should be understood that the following drawings illustrates only certain embodiments of the present invention, therefore is not construed as pair
The restriction of range for those of ordinary skill in the art without creative efforts, can also be according to this
A little attached drawings obtain other relevant attached drawings.
Fig. 1 is the flow diagram of 42.5 method for production of cement of slow setting provided by the invention.
Specific embodiment
It in order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below will be in the embodiment of the present invention
Technical solution be clearly and completely described.The person that is not specified actual conditions in embodiment, according to normal conditions or manufacturer builds
The condition of view carries out.Reagents or instruments used without specified manufacturer is the conventional production that can be obtained by commercially available purchase
Product.
A kind of 42.5 method for production of cement of slow setting of the embodiment of the present invention and application are specifically described below.
The embodiment of the invention provides above-mentioned 42.5 method for production of cement of slow setting, comprising:
Desulfurized gypsum, Portland clinker and slag are mixed, edible sugar, flyash and grinding aid are added
Agent enters cement bunker by bag collector after ball milling selects powder, is deflated, outbound after high pressure blowing homogenizing.
Specifically, respectively from desulfurized gypsum is weighed in desulfurized gypsum storehouse, from weighing clinker in clinker warehouse, claim from slag library
Measure slag.The desulfurized gypsum, Portland clinker and slag of weighing are delivered in powder concentrator and sorted, then is delivered to cement
It is mixed in roll squeezer.The mixed method combines closed circuit cement mill system, and the temperature of cement can be effectively reduced, help to improve
The setting time of cement.
Further, in the present invention preferably embodiment, Portland clinker includes C4AF and C3A, by quality percentage
Than meter, C4AF and C3A is no more than 16%.The presetting period of Portland clinker is greater than 140min, and final setting time is greater than
175min。
It should be noted that Portland clinker enter clinker warehouse when temperature less than 45 DEG C, if temperature is excessively high,
Organic matter in Portland clinker, which volatilizees, to fail, and can not play effect, shortens the setting time of cement.
Further, in the present invention preferably embodiment, the moisture in slag is less than 7%, it is preferable that in desulfurized gypsum
Moisture less than 8%.
Level-one is weighed respectively and eats white granulated sugar, flyash and grinding aid, is successively delivered in ball mill and powder concentrator.It helps
The bistrique of ball mill is added by delivery pump for grinding agent, so that grinding aid can improve the stabilization of grinding aid with the conveying of continuous-stable
Property.Mixture enters powder concentrator after ball milling in the ball mill and sorts.In the present invention preferably embodiment, mixture is in output ball
Temperature when grinding machine is less than 95 DEG C.The temperature avoids the volatilization failure of the organic matter in mixture, can not play effect, shortens cement
Setting time.It is white to show that level-one is eaten by the experimental study of inventor including superfine, firsts and seconds for edible white granulated sugar
The performance of granulated sugar is more excellent, and has preferable economic benefit.
Grinding aid excites the hydration activity of latent hydraulicity material, improves cement using function specific to chemical substance
Early strength improves cement fluidity, shortens cement setting time.Grinding aid can reduce surface of material energy, weaken molecule and draw
Gather effect caused by power, helps the acceleration of particle crackle when external force work done to extend, to improve mill efficiency.Use grinding aid
After agent, clinker proportion decline, mixing material volume increases；Economic benefit is mainly reflected in mill hourly output and improves, is comprehensive
The decline of power consumption finally makes the reduction of the cement unit cost of production.The application of cement grinding aid can be thrown not increasing fixed assets
Money and does not increase and increase a kind of control measures that are energy-saving, improving cement performance to manufacture of cement in the case where operating cost.
Edible sugar, flyash measure respectively mixing be added bistrique, reduce edible sugar conveyer belt come de-stabilising effect because
Element.The addition of flyash so that cement good fluidity, improve the intensity of cement, reduce water consumption.After ball milling selects powder
The specific surface area of cement is 345 ± 15kg/cm2, fineness tailed over by the square hole screen of 0.08mm less than 0.1%, three oxygen in cement
The mass percentage for changing sulphur is 2.4~3%.Flowing degree of net paste of cement is greater than 220mm.
Preferably, the embodiment of the present invention is using edible level-one white granulated sugar.It should be noted that edible sugar can use xylose
Calcium or Diammonium phosphate (DAP) substitution.Grinding aid in the embodiment of the present invention is alcamine compound.
By mass percentage, Portland clinker be 76~80%, desulfurized gypsum be 2~8%, slag be 2~
8%, flyash is 10~14%, and edible sugar is 0.001~0.035%, and grinding aid is 0.01~0.05%.Preferably, it takes off
Sulphur gypsum can be 3%, 4%, 6%, 7%, and slag can be 3%, 4%, 6%, 7%, edible sugar can for 0.005%,
0.01%, 0.015%, 0.02%, 0.025%, 0.03%.Grinding aid can be 0.02%, 0.03%, 0.04%.
The cement exported from powder concentrator enters in bag collector, enters back into cement bunker.It should be noted that into cement
The temperature of the cement in library is less than 85 DEG C.After cement enters cement bunker, carry out less than 70 DEG C and constant from the temperature down to cement.It puts
Fall the water in air accumulator compressed air, avoids the water in compressed air from influencing the quality of cement, high pressure blowing, cement are equal after deflation
It dispatches from the factory again after change.
By the temperature in each stage control cement, avoids the organic matter in cement from volatilizing and fails, can not play effect,
Shorten the setting time of cement.The cement as made from aforementioned production method its with longer presetting period and final setting time,
And there is preferable anti-folding and compressive property, meet the needs of Xinjiang desert areas construction during hot season environment.The producer
Method can be applied to the preparation of slow setting cement.
Feature and performance of the invention are described in further detail with reference to embodiments.
Embodiment 1
A kind of 42.5 method for production of cement of slow setting is present embodiments provided, is mainly made by following steps:
By mass percentage, Portland clinker 76%, C in Portland clinker4AF and C3A is no more than
16%, desulfurized gypsum 4.915%, slag 5%, flyash 14%, it is 0.035% that level-one, which eats white granulated sugar, grinding aid
It is 0.05%.Moisture in slag is less than 7%, and the moisture in desulfurized gypsum is less than 8%.
The desulfurized gypsum, Portland clinker and slag of weighing are delivered in powder concentrator and sorted, then is delivered to water
It is mixed in mud roll squeezer.
Edible sugar, flyash and grinding aid are weighed respectively, are successively delivered in ball mill and powder concentrator.Grinding aid is logical
The bistrique that ball mill is added in delivery pump is crossed, edible sugar, flyash measure mixing respectively and bistrique is added, and mixture is in output ball milling
Temperature when machine is less than 95 DEG C.The specific surface area of cement after ball milling selects powder is 363kg/cm2, 0.08mm square hole screen sieve
Remaining fineness is 0.1%.
The cement exported from powder concentrator enters in bag collector, enters back into cement bunker.Into the temperature of the cement of cement bunker
Degree is less than 85 DEG C.After cement enters cement bunker, carry out less than 70 DEG C and constant from the temperature down to cement.Cement enters cement bunker
After dispatch from the factory, high pressure blowing again after deflating to cement.
The production method that embodiment 2~10 is provided using embodiment 1, production stage and manufacturing parameter are same as Example 1,
Using different raw material proportionings, specifically match such as table 1:
The raw material proportioning of 1 embodiment of table
The presetting period of the cement of Examples 1 to 10 production and final setting time are as follows:
The presetting period of 2 cement of table and final setting time
As shown in Table 2, the presetting period of cement made from Examples 1 to 10 is greater than 360min, and final setting time is greater than
420min meets slow setting cement in the requirement of 40 DEG C of Xinjiang desert areas high temperature season or more construction environments.
Stability detection is just carried out to cement made from Examples 1 to 10, and solidifies 3 days and 28 days survey in water-setting respectively
Its fracture resistance and compressive property are tried, testing result is as follows:
3 testing result of table
As shown in Table 3, the stability of slow setting cement made from the embodiment of the present invention 1~10 is qualified, and meets Xinjiang
What 40 DEG C of desert areas high temperature season or more construction environments required is greater than 24.0Mpa for strength of cement three days, and 28 days anti-
Compressive Strength is greater than 42.5Mpa；It is greater than within bending strength of cement three days 5.0Mpa, 28 days flexural strengths are wanted greater than 8.0Mpa's
It asks.Illustrate that 42.5 method for production of cement of slow setting provided by the invention is more scientific and reasonable, the preferable slow setting water of performance can be made
Mud.
Embodiments described above is a part of the embodiment of the present invention, instead of all the embodiments.Reality of the invention
The detailed description for applying example is not intended to limit the range of claimed invention, but is merely representative of selected implementation of the invention
Example.Based on the embodiments of the present invention, obtained by those of ordinary skill in the art without making creative efforts
Every other embodiment, shall fall within the protection scope of the present invention.
Claims (10)
1. a kind of 42.5 method for production of cement of slow setting, which is characterized in that including
Desulfurized gypsum, Portland clinker and slag are mixed, edible sugar, flyash and grinding aid are added, is passed through
It crosses after ball milling selects powder, cement bunker is entered by bag collector, gas, high pressure blowing in discharge air accumulator are first carried out before blowing homogenizing
Outbound after homogenizing；
By mass percentage, the Portland clinker is 76~80%, and the desulfurized gypsum is 2~8%, the slag
Be 2~8%, the flyash be 10~14%, the edible sugar be 0.001~0.035%, the grinding aid be 0.01~
0.05%.
2. 42.5 method for production of cement of slow setting according to claim 1, which is characterized in that by mass percentage, described
Portland clinker is 77~79%, and the desulfurized gypsum is 4~6%, and the slag is 4~6%, and the flyash is 10
~14%, the edible sugar is 0.001~0.035%, and the grinding aid is 0.01~0.05%.
3. 42.5 method for production of cement of slow setting according to claim 1, which is characterized in that the Portland clinker packet
Include C4AF and C3A, by mass percentage, the C4The AF and C3A is no more than 16%.
4. 42.5 method for production of cement of slow setting according to claim 1, which is characterized in that the moisture in the slag is less than
7%, it is preferable that the moisture in the desulfurized gypsum is less than 8%.
5. 42.5 method for production of cement of slow setting according to claim 1, which is characterized in that the Portland clinker exists
Temperature when into clinker warehouse is less than 45 DEG C, after ball milling selects powder, small by the temperature of the cement before the bag collector
In 95 DEG C, into the cement bunker cement temperature less than 85 DEG C.
6. 42.5 method for production of cement of slow setting according to claim 1, which is characterized in that cement enters the cement bunker
Afterwards, it carries out less than 70 DEG C and constant from the temperature down to the cement.
7. 42.5 method for production of cement of slow setting according to claim 1, which is characterized in that the grinding aid passes through delivery pump
The bistrique of ball mill is added.
8. 42.5 method for production of cement of slow setting according to claim 1, which is characterized in that the desulfurized gypsum, silicate
After clinker and slag measure respectively, it is delivered in powder concentrator and roll squeezer and is mixed.
9. 42.5 method for production of cement of slow setting according to claim 1, which is characterized in that the cement after ball milling selects powder
Fineness, tailed over by 0.08mm square hole screen less than 0.1%, in the cement mass percentage of sulfur trioxide be 2.4~
3%.
10. 42.5 method for production of cement of slow setting as described in any one of claim 1 to 9 is preparing the application in slow setting cement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811294423.3A CN109336424B (en) | 2018-10-30 | 2018-10-30 | Retarded 42.5 cement production method and application |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811294423.3A CN109336424B (en) | 2018-10-30 | 2018-10-30 | Retarded 42.5 cement production method and application |
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| Publication Number | Publication Date |
|---|---|
| CN109336424A true CN109336424A (en) | 2019-02-15 |
| CN109336424B CN109336424B (en) | 2021-08-10 |
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| CN201811294423.3A Active CN109336424B (en) | 2018-10-30 | 2018-10-30 | Retarded 42.5 cement production method and application |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112851149A (en) * | 2021-01-26 | 2021-05-28 | 驻马店市豫龙同力水泥有限公司 | Road retarding general portland cement and preparation method and coagulation accelerating method thereof |
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|---|---|---|---|---|
| CN101134667A (en) * | 2007-08-09 | 2008-03-05 | 新疆维吾尔自治区东湖水泥厂 | Granulated sugar retarded cement and production method and application of granulated sugar in retarded cement |
| CN101182139A (en) * | 2007-11-12 | 2008-05-21 | 华南理工大学 | Masonry cement having higher strength and water retention |
| CN105948544A (en) * | 2016-05-27 | 2016-09-21 | 四川省宁南县白鹤滩水泥有限责任公司 | Retarded portland cement and preparation method thereof |
-
2018
- 2018-10-30 CN CN201811294423.3A patent/CN109336424B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101134667A (en) * | 2007-08-09 | 2008-03-05 | 新疆维吾尔自治区东湖水泥厂 | Granulated sugar retarded cement and production method and application of granulated sugar in retarded cement |
| CN101182139A (en) * | 2007-11-12 | 2008-05-21 | 华南理工大学 | Masonry cement having higher strength and water retention |
| CN105948544A (en) * | 2016-05-27 | 2016-09-21 | 四川省宁南县白鹤滩水泥有限责任公司 | Retarded portland cement and preparation method thereof |
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| Title |
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| 韩长菊等: "《生料制备与水泥制成操作》", 30 November 2010, 武汉理工大学出版社 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112851149A (en) * | 2021-01-26 | 2021-05-28 | 驻马店市豫龙同力水泥有限公司 | Road retarding general portland cement and preparation method and coagulation accelerating method thereof |
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