CN1045580C - Method for manufacture of slag cement containing activator - Google Patents
Method for manufacture of slag cement containing activator Download PDFInfo
- Publication number
- CN1045580C CN1045580C CN94101331A CN94101331A CN1045580C CN 1045580 C CN1045580 C CN 1045580C CN 94101331 A CN94101331 A CN 94101331A CN 94101331 A CN94101331 A CN 94101331A CN 1045580 C CN1045580 C CN 1045580C
- Authority
- CN
- China
- Prior art keywords
- slag
- cement
- gypsum
- surfactant
- slag cement
- 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.)
- Expired - Fee Related
Links
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
- C04B7/36—Manufacture of hydraulic cements in general
- C04B7/48—Clinker treatment
- C04B7/52—Grinding ; After-treatment of ground cement
-
- 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
- C04B2103/00—Function or property of ingredients for mortars, concrete or artificial stone
- C04B2103/40—Surface-active agents, dispersants
-
- 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
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)
- Soil Conditioners And Soil-Stabilizing Materials (AREA)
Abstract
The present invention discloses a preparation method of slag cement with a surfactant by utilizing discharged waste in the production of smelting steel. The method is characterized in that 22 to 42% of clinker, 50 to 70% of slag and 5 to 8% of gypsum are combined with surfactant (CH2CH2OH)3N, sulfite yeast wort for brewing wines and sodium oxalate or are combined with any substance in the surfactant (CH2CH2OH)3N, the sulfite yeast wort for brewing wines and the sodium oxalate; the total mixed amount is from 0.01 to 0.75 grams; the substances are mixed and ground to a specific surface area of 2500 to 4500cm<2>/g. The present invention has the advantages of simple technology, easy control and low cost; the yield can be enhanced by two to three times. The method has high early strength and low hydration heat, and has notable economical and social benefits.
Description
The invention belongs to a kind of slag cement compound method that has tensio-active agent of discharging waste material in the iron and steel smelting production of utilizing, be applicable to ground and underground structure, the buildings of various concrete and Steel Concrete product, water conservancy project and marine structure, heat insulating and high-temperature workshop.
China's cement mark is a lot of at present; slag cement for example; the production process of slag cement is identical with ordinary Portland cement; with Portland clinker, gypsum is sent into common grinding in the mill by a certain percentage, according to cement clinker behind the granulation slag drying; scoriaceous quality; change grog and the scoriaceous cooperation grinding fineness of cement when, can produce the cement of different mark labels, its prescription is listed as follows:
| Numbering | Cement formula | The anti-intensity (MPa) of tearing open | Ultimate compression strength (MPa) | ||||||
| Grog | Slag | Gypsum | 3 days | 7 days | 28 days | 3 days | 7 days | 28 days | |
| Grog | 95 | 0 | 5 | 5.3 | 6.0 | 7.6 | 34.6 | 43.5 | 60.1 |
| B 1 | 75 | 20 | 5 | 1.1 | 4.1 | 6.2 | 8.2 | 20.6 | 42.5 |
| B 2 | 60 | 35 | 5 | 0.9 | 3.2 | 5.4 | 3.5 | 14.7 | 32.5 |
" Portland blast ", " gypsum slag cement ", " with other clinker-free cements of Iron And Steel Industry slag preparation " are disclosed in " cement technology " " blast-furnace slag and slag cement " literary composition in (institution of higher education's teaching material on probation in July, 1991), the problem that these cement exist is, at the bottom of the early strength, sclerosis is slow, and label descends.
Chinese patent by retrieval, application number is 89101567.1 " dross slag cements ", 87107956.9 " method for making steam curing cement ", 87107249.1 " low clinker phosphorous residue cement and processing method ", 88107684.8 " prescriptions of mixed cement material from phosphorus slag ", in these cement formulas, all do not add tensio-active agent, exist the problems referred to above equally, do not find that by retrieval a kind of slag cement of promoting agent is disclosed.
The slag cement compound method that the purpose of this invention is to provide a kind of promoting agent has solved and has mixed slag and make cement early strength height, hydration heat is low, label is high problem.
For realizing above-mentioned task, the technical scheme that the present invention solves is: the tensio-active agent that adopts slag, grog, gypsum, trace is as the cement component part.With the slag is major ingredient, slag quality coefficient (CaO+AC
2O
3+ MgO/SiO
2+ P
2O
5) must not be less than 1: 2.Grog and gypsum are the promoting agent exciting agent, and slag is played the dual excitation of alkalescence, vitriol, because produce hydrated calcium silicate after the grog aquation, hydrated products such as drated calcium aluminate produce pectisation.And the Calucium Silicate powder in the middle of them can be more stable in conjunction with generating crystal with gypsum.It is higher to generate intensity
(ettringite).And tensio-active agent plays the activation slag, stops C
2S, C
3The too early aquation of S plays strong effect in later strength.The volume of tensio-active agent adapts to and can quicken scoriaceous active performance, improves cement intensity.Effective way is, do not improve or delays C
3S, C
2The hydration rate of S and accelerate C
3A, C
4The hydration rate of AF is at C
3A, C
4After AF forms ettringite, form the spatial skeleton of netted product, C
3S continues aquation again, makes the water mudrock structure densification, crosses the high-stability adverse consequences to eliminate fCaO, and intensity is improved.
Adopt the mechanism of surfactant to be: 1. softening slag, make vitreum generation more defects in the slag, slag has super-active; 2. depolymerization C
2The S mineral; 3. make C
3The S mineral crack stress corrosion, promote crack propagation; To weaken cohesive strength.Delay C simultaneously
3The S hydration can be quickened C
3A, C
4The hydration rate of AF utilizes gypsum can make C
3A, C
4The easier formation ettringite of AF forms finer and close water mudrock structure, and strength of cement increases substantially.
With the promoting agent combined grinding on Portland clinker, slag, gypsum, trace surface to specific surface area 2500-4500Cm
2/ g, the best is 2980-4000Cm
2/ g.Can produce the slag cement that has tensio-active agent.Used Portland clinker refers to the grog that existing each cement mill produces, gypsum major ingredient CaSO among the present invention
4, the main tensio-active agent (CH that adds in preparation
2CH
2OH)
3N, Na
2SO
4, C
10H
14N
2O
8Na
22H
2Two kinds or multiple combinations of substances in O, sulphite yeast wine brewing wheat tooth juice, the sodium oxalate, its total volume is 0.01-0.75%, the volume of gypsum is SO
33.5 the optimum mix amount is 5-8%, all meets GB through Physical Test.
Embodiment:
Raw materials used chemical ingredients is listed as follows:
| SiO 2 | Al 2O 3 | Fe 2O 3 | CaO | MgO | SO 3 | LOSS | |
| Grog | 20.08 | 4.47 | 5.18 | 63.36 | 1.27 | 0.5 | 2.05 |
| Gypsum | 30.09 | 6.68 | 3.03 | 18.85 | 3.10 | 22.34 | 14.51 |
| Slag | 32.71 | 15.34 | 1.33 | 37.83 | 8.94 |
The slag cement prescription that the present invention has tensio-active agent is listed as follows:
| Technology | Numbering | Grog % | Slag % | Gypsum % | Tensio-active agent % | Cement SO 3％ |
| Blank | A 0 | 95 | 0 | 5 | 0 | 1.2 |
| The present invention | A 1 | 42 | 50 | 8 | 0.5 | 3.5 |
| The present invention | A 2 | 32 | 60 | 8 | 0.5 | 3.5 |
| The present invention | A 3 | 22 | 70 | 8 | 0.5 | 3.5 |
The present invention is by ruggedness test, and existing antagonism folding, ultimate compression strength are listed as follows:
| Numbering | Folding strength MPa | Ultimate compression strength MPa | ||||
| 3 days | 7 days | 28 days | 3 days | 7 days | 28 days | |
| A 0 | 5.3 | 6.0 | 7.6 | 34.6 | 43.5 | 60.1 |
| A 1 | 5.5 | 7.4 | 8.8 | 27.1 | 45 | 62.5 |
| A 2 | 5.1 | 6.5 | 8.3 | 25.7 | 42.3 | 61 |
| A 3 | 5.4 | 6.8 | 8.7 | 24.1 | 40.2 | 56.5 |
The inventive method is easily gone, and technology is simple, and is easy to control, the slag consumption is big, and the grog consumption is few, has eliminated the pollution of slag to environment, the early strength height, aquation is ripe low, label height, intensity stabilization, can make cement output improve 2～3 times, cost is low, adapts to suitability for industrialized production, has remarkable economical and social benefit.
Claims (1)
1. the slag cement compound method of a promoting agent is characterized in that, is being made of the tensio-active agent that adds 0.01-0.75% in the slag cement slag 50-70%, grog 22-42%, gypsum 5-8%, and this tensio-active agent is selected from (CH
2CH
2OH)
3N, Na
2SO
4, C
10H
14N
2O
3Na
22H
2O, sulphite yeast wine brewing wheat tooth juice, second two are made two or more in the sodium.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN94101331A CN1045580C (en) | 1994-02-02 | 1994-02-02 | Method for manufacture of slag cement containing activator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN94101331A CN1045580C (en) | 1994-02-02 | 1994-02-02 | Method for manufacture of slag cement containing activator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1092046A CN1092046A (en) | 1994-09-14 |
| CN1045580C true CN1045580C (en) | 1999-10-13 |
Family
ID=5030124
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN94101331A Expired - Fee Related CN1045580C (en) | 1994-02-02 | 1994-02-02 | Method for manufacture of slag cement containing activator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1045580C (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1095450C (en) * | 1998-10-14 | 2002-12-04 | 余友谊 | Active agent for fly ash concrete |
| CN102424536B (en) * | 2011-09-15 | 2012-12-05 | 湖北工业大学 | Preparation method of cement raw meal grinding activator |
| CN103803821A (en) * | 2013-12-16 | 2014-05-21 | 张家港市双林制墨涂装有限公司 | Fly ash cement and preparation method thereof |
| CN116514433B (en) * | 2023-04-25 | 2024-03-08 | 北京瑞吉达科技有限公司 | Composite additive and preparation method thereof |
-
1994
- 1994-02-02 CN CN94101331A patent/CN1045580C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1092046A (en) | 1994-09-14 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |