CN1076431A - The production method of slag white cement - Google Patents
The production method of slag white cement Download PDFInfo
- Publication number
- CN1076431A CN1076431A CN93101579A CN93101579A CN1076431A CN 1076431 A CN1076431 A CN 1076431A CN 93101579 A CN93101579 A CN 93101579A CN 93101579 A CN93101579 A CN 93101579A CN 1076431 A CN1076431 A CN 1076431A
- Authority
- CN
- China
- Prior art keywords
- white cement
- slag
- production method
- whiteness
- consumption
- 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
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
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
- C04B28/04—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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/80—Optical properties, e.g. transparency or reflexibility
- C04B2111/802—White 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
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention discloses a kind of production method of slag white cement, its principal feature is that the consumption of slag micropowder is 85～90%, and the consumption of basic additive is no more than 5%.Mix the whiteness and the low what raw material white cement of intensity of the white cement of making, and early strength significantly raising in addition, adopt the present invention can save a large amount of white cement clinkers, thereby have tangible economic benefit.
Description
The present invention relates to a kind of production method of slag white cement, particularly by in white cement clinker, mixing the method for slag micropowder and other additive.
White cement generally is to be widely used for building industry as finishing material.Conventional production method is that Wingdale, white clay are carried out roasting after mixing, and pulverizes then, and adding gypsum etc. is made.This method is higher to the purity requirement of raw material, it is few more good more such as tinting material content such as FeO to wish in the raw material, and during grinding, can not adopt the grinding instrument of irony after roasting, the production of white cement is very limited, has caused the production cost of white cement to increase.More and more widely in recent years, not only for what decoration aspect, therefore not only require to improve the turnout of white cement, and require white cement that higher-strength is arranged by what white cement purposes.March 17 in 1992 everyday the disclosure one key name be the patent application of " manufacture method of white cement " (special permission communique flat 4-15183), having proposed a kind of is the method for raw material production white cement with slag.Utilize this method, slag not only as raw material and the roasting simultaneously of other raw material, also can be used as additive and allocates among the white cement clinker, can increase substantially the output of white cement like this.But require the amount of allocating into not cross 80%, and scoriaceous whiteness and fineness are also all had corresponding requirement.Find in the practical application, when the big what 50% of scoriaceous add-on, the intensity of the white cement of preparation, especially early strength is on the low side, has influenced the use of slag white cement.
The production method that the purpose of this invention is to provide a kind of slag white cement not only can strengthen the scoriaceous amount of allocating into, and can improve the intensity of white cement.
The characteristics of slag white cement production method of the present invention are that the consumption of slag micropowder is 85～90% with slag micropowder and white cement clinker and the mixed system of basic additive, and basic additive is no more than 5%.
Can know slag from experiment, refer in particular to water granulated slag in the blast furnace production here, be that a kind of glass that contains Calucium Silicate powder exsomatizes, and certain activity is arranged, and under the exciting of alkaline substance, can become a kind of gelling material of the hydraulicity.Therefore, can produce white cement with the method for directly allocating white cement clinker into, save the consumption of grog, thereby save the energy consumption in the grog production, the scoriaceous amount of allocating into is big more, and economic benefit is good more.In order to strengthen the scoriaceous amount of allocating into, scoriaceous hydration process is studied, after slag and the cement mixing, the alkaline matter Ca(OH that cement produces) 2 can destroy the surface tissue that the slag glass exsomatizes in hydration reaction, make the easy what of moisture content in infiltrating slag particle, carry out hydration reaction, produce the gelling material.If but the white cement clinker consumption is less, it is just few then to activate scoriaceous alkaline matter content, at this moment, just must add some alkaline matters.Adopted yellow soda ash among the present invention, because the adding of yellow soda ash, it can and Ca(OH) 2 reactions generate the extremely strong NaOH of alkalescence, thereby slag glass extracorporeal surface structural damage effect is aggravated, promoted scoriaceous hydration reaction, consequently improved the intensity of cement and slag mix, especially early strength.The consumption of Na2CO3 is little what 5% in the present invention.When utilizing slag preparation cement, also have a problem that is not easy to look, strengthen scoriaceous proportioning exactly, should not reduce the whiteness of white cement.Find that from experiment the whiteness of slag micropowder and its fineness have confidential relation.The slag micropowder specific surface area is 3000cm
2During/g, whiteness is 78%; Specific surface area is 4000cm
2Be 83.5% during/g, specific surface is 4500cm
2Be 84% during/g.Above presentation of results is as the big what 4000cm of specific surface area of slag micropowder
2During/g, can make the whiteness of slag micropowder itself reach primary standard (GB2015-80).The whiteness of the slag micropowder with this whiteness and the slag white cement that obtains after white cement clinker mixes also improves to some extent than the whiteness of raw material white cement clinker.On the other hand, the fineness of micro mist increases, and promptly is that the surface-area that participates in hydration reaction increases, and its result is useful to the intensity that what improves white cement.
Below be one embodiment of the present of invention:
The employing label is 325 white cement 10%(weight, down together); The big what 4500cm of blast-furnace cinder micro-powder 85%(specific surface area
2/ g, the big what 84% of whiteness); Gypsum 2%; Yellow soda ash 3%; Above each component is put into mixer, can obtain the slag white cement of industrial utility value behind the thorough mixing.The not low former white cement clinker of what of the whiteness of this slag white cement and intensity, and early strength also significantly improves.Every physicals row what table 1 of this slag white cement also is listed in the table with the performance of correlated common No. 325 white cements of this slag white cement.
Adopt method of the present invention by what, scoriaceous proportioning is up to more than 85%, thus can save a large amount of white cement clinkers, thereby have very considerable economic.Simultaneously, though it is very high to allocate scoriaceous ratio into, the whiteness of the finished product and intensity all do not have to reduce, and also slightly raise, and especially the raising of early strength has more significantly effect to the what construction application.
Claims (3)
1, a kind of production method of slag white cement is characterized in that the consumption of slag micropowder is 85～90% with slag micropowder and white cement clinker and the mixed system of basic additive, and basic additive is no more than 5%.
2, the method for claim 1, wherein basic additive is a yellow soda ash.
3, the method for claim 1, the specific surface area of slag micropowder is what 4500cm greatly
2/ g.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN93101579A CN1076431A (en) | 1993-02-24 | 1993-02-24 | The production method of slag white cement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN93101579A CN1076431A (en) | 1993-02-24 | 1993-02-24 | The production method of slag white cement |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1076431A true CN1076431A (en) | 1993-09-22 |
Family
ID=4983658
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN93101579A Pending CN1076431A (en) | 1993-02-24 | 1993-02-24 | The production method of slag white cement |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1076431A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102173618A (en) * | 2011-03-09 | 2011-09-07 | 烟台大学 | Method for producing white cement |
| CN102249571A (en) * | 2011-05-06 | 2011-11-23 | 山东科技大学 | Energy-saving composite white cement |
-
1993
- 1993-02-24 CN CN93101579A patent/CN1076431A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102173618A (en) * | 2011-03-09 | 2011-09-07 | 烟台大学 | Method for producing white cement |
| CN102173618B (en) * | 2011-03-09 | 2013-03-06 | 烟台大学 | Method for producing white cement |
| CN102249571A (en) * | 2011-05-06 | 2011-11-23 | 山东科技大学 | Energy-saving composite white cement |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |