CN1159248C - Composite cementing material of slag and steel slag - Google Patents
Composite cementing material of slag and steel slag Download PDFInfo
- Publication number
- CN1159248C CN1159248C CNB011064749A CN01106474A CN1159248C CN 1159248 C CN1159248 C CN 1159248C CN B011064749 A CNB011064749 A CN B011064749A CN 01106474 A CN01106474 A CN 01106474A CN 1159248 C CN1159248 C CN 1159248C
- Authority
- CN
- China
- Prior art keywords
- slag
- steel slag
- weight
- fine aggregate
- fine powder
- 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.)
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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
- C04B7/14—Cements containing slag
- C04B7/147—Metallurgical slag
- C04B7/153—Mixtures thereof with other inorganic cementitious materials or other activators
- C04B7/21—Mixtures thereof with other inorganic cementitious materials or other activators with calcium sulfate containing activators
-
- 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)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The present invention relates to cementitious materials compounded by scoria and steel slag, which is used for making mortar and concrete. The cementitious materials are prepared from compound scoria miropowder and steel slag fine aggregate according to the weight rate of 1:1 to 2, wherein the compound scoria miropowder is formed by a way that 70 to 85% of blast furnace slag, 8 to 20% of cement clinker and 7 to 11% of gypsum are milled according to weight, and a specific surface area is from 3500 to 7600cm<2>/g; granulation treatment or magnetic selection sieving is only carried out on the steel slag fine aggregate, and a prototype gradation particle diameter of the steel slag fine aggregate is smaller than the prototype gradation particle diameter of the steel slag of 8mm. Because the steel slag in the present invention does not take part in combination in a powder mode but in a fine aggregate mode, the cementitious materials have the various characteristics of simple production process, low production cost, high finished product grade, etc.
Description
Technical field
The present invention relates to utilize the Iron And Steel Industry waste residue to prepare mortar for building and concrete agglutination material, refer to a kind of agglutination material that is composited by slag and slag particularly.
Background technology
At present, mortar and the concrete prepared in the common engineering building all are to be agglutination material according to traditional technology with the silicate cement, make fine aggregate with sand, add that coarse aggregate such as stone and water processes by quantitative cooperation.In Iron And Steel Industry, when people handle the slag that blast-furnace slag that ironmaking discharges and steel-making discharged, find that its main chemical compositions all is calcium oxide, silicon-dioxide, aluminium sesquioxide, magnesium oxide, ferric oxide etc., only blast-furnace slag is different with the content of each chemical ingredients in the slag.Various oxide components in the blast-furnace slag exist with various silicate minerals forms, have potential hydraulic gelling property, can demonstrate its hydraulic gelling property under the effect of cement clinker, lime, the agent of gypsum equal excitation, are good cement raw materials.The essential mineral of slag consists of the tricalcium silicate similar with cement, Dicalcium Phosphate (Feed Grade), ferro-aluminate isoreactivity mineral, has the hydraulic gelling, also can be used as the raw material of producing cement.People have developed various dross slag cements thus.These cement overwhelming majority as agglutination material are to be major ingredient with slag and slag, are auxiliary material with a certain amount of cement clinker and gypsum, through grinding machine grind for specific surface area greater than 3500cm
2The mixed powder of/g constitutes.Though it has turns waste into wealth, improve plurality of advantages such as environmental pollution, its shortcoming is that time of coagulation is slow, and strength of cement particularly early strength is low, performance is unstable, product grade is not high, can only use as cement of low index, thereby limit its promotion and application.And all raw materials of this cement all need dry and levigate, particularly the levigate requirement of slag is high, granularity is less than 10mm before going into mill, water content is less than 2%, and steel content is less than 1%, otherwise the grinding machine cisco unity malfunction, thereby its production technique is comparatively complicated, time consumption and energy consumption is not said, also damages mechanical means easily, and production efficiency is lower.Simultaneously the amount of participating in of the cement clinker that cost is the highest in the raw material of this cement is also higher relatively, reaches 10～20%, and the amount of participating in of cement clinker when very few its intensity particularly early strength is again less than assurance, thereby it is also higher relatively to integrate its production cost.
Summary of the invention
Purpose of the present invention be exactly to provide that a kind of production technique is simple, agglutination material that low production cost and finished product are of high grade is composited by slag and slag.
For realizing this purpose, the agglutination material that the present invention developed is composited by slag and slag is made up of by weight 1: 1 to 1: 2 complex ore slag fine powder and two kinds of components of slag thin aggregate.Wherein: complex ore slag fine powder is made up of through levigate 70～85% blast-furnace slag, 8～20% cement clinker and 7～11% gypsum again by weight, and its specific surface area is 3500～7600cm
2/ g.Slag thin aggregate for only through granulated processed or magnetic separation sieve, the particle diameter of its natural grading is less than the slag of 8mm.During use, complex ore slag fine powder and two kinds of components of slag thin aggregate are mixed, again by traditional preparation process mortar and concrete technology and grating condition, add conventional coarse aggregate and water such as conventional fine aggregate such as sand and/or rubble, promptly can be made into the mortar or the concrete of different labels.Its hydration mechanism is: after above-mentioned various raw materials mixed, the alkaline grog aquation that is present in a small amount of fine particle wherein was rapid, and the hydrated product of being separated out plays a large amount of embryos effects, and the early strength of finished product is had significant contribution.And the calcium hydroxide that the grog aquation generates can improve liquid phase basicity, helps slag and scoriaceous hydration reaction, has played the effect of exciting agent.The basicity of slag is only second to grog, because the steel slag particle that is adopted is thicker, crystal grain is also bigger, has impurity and sosoloid again, so its hydration activity is relatively poor and slow.But the amount of participating in of slag maximum, make it to become to the most influential material of finished product, the deficiency of its early stage performance can be remedied by grog, calcium hydroxide and the calcium sulfate in the gypsum in hydration process in the slag are soluble in water, vitreous structure in the slag is dissociated, promote the slag aquation, and generation aquation calcium sulphoaluminate is an ettringite.And the ettringite of this moment generates in the formed relative low alkalinity liquid phase of small quantity of clinker hydration reaction, it is single free growing crystal, there is not solid phase to rely on, all can freely grow up in its two ends, the increase of the thin bar-shaped ettringite volume that is generated can only make finished cement stone more closely knit, and can not produce expansion damage.Interpenetrating between while slag, slag and the gypsum, also help reducing the basicity of steel slag particle outside, the surface that its exposure is made new advances, generate hydrated calcium silicate gel and calcium hydroxide, the aquation of mutually promoting further, thus make that the finished product overall performance that finally obtains is stable, and intensity increases, good security, grade improves.
The invention has the advantages that: the slag thin aggregate that is adopted is the natural classification slag after slag field granulation or magnetic separation only, the use of can directly preparing burden does not need dryly and levigate, and one side has reduced the process for processing link of slag like this, production technique is greatly simplified, and production energy consumption declines to a great extent; Significantly reduced on-the-spot shared soil of slag and management on the other hand and consumed, favourable have the comprehensive regulation of slag and improve environmental benefit.And it is combined as active Cemented Fine Aggregate Made of Granulated and complex ore slag fine powder slag, not only made full use of the potential hydration activity of these waste materials, the highest clinker quantity of the required cost of being furnished with is also declined to a great extent, grog accounts for 8～20% in complex ore slag fine powder, but in whole agglutination material, only account for below 10%, thereby can reduce the production cost and the energy consumption of agglutination material greatly.Slag itself participates in the combination agglutination material as the form of fine aggregate simultaneously, change the powder form in the conventional combination of having reformed, the fineness difference that the slag natural grading is formed, existing coarse particles has fine particle again, the mutual chimeric hole that makes diminishes between the thickness particle, and it is very closely knit that formed finished product will become; Slag thin aggregate also plays skeleton function, and the reaction interface of it and complex ore slag fine powder hydration reaction is very firm, is higher than Portland cement far away and combines with the interface of sand, and the early strength of formed finished product and later strength are good of high grade.
Embodiment
The present invention is described in further detail below in conjunction with preferred embodiment:
The agglutination material that the present invention prepared is composited by slag and slag preferably is made up of by weight 1: 1 complex ore slag fine powder and two kinds of components of slag thin aggregate.Wherein: complex ore slag fine powder is made up of through levigate 80% blast-furnace slag, 11.5% cement clinker and 8.5% clay gypsum again by weight, and its specific surface area is 5500～6000cm
2/ g.Slag thin aggregate be the time of storing up half a year with interior, only through granulated processed or magnetic separation sieve, the particle diameter of its natural grading is less than the slag of 5mm.Such slag thin aggregate hydration activity loss is little, and gelling property is very strong, the density height of natural grading; Such complex ore slag fine powder ratio and specific surface area are moderate, and gypsum need not calcined, and grog adds few, and formed nuclear material and alkali lye environment but very help quickening the hydration reaction of a large amount of slag thin aggregates and blast-furnace slag.The results showed that by the agglutination material that is composited than component and proportioning, add sand (also can not adding), rubble and water when preparing mortar and concrete, the intensity index of products obtained therefrom is very good.Subordinate list 1 and subordinate list 2 are for adopting the mortar and the concrete performance index of the made different labels of agglutination material of the present invention.With complex ore slag fine powder, slag thin aggregate two components by weight 1: 1 batching (see attached list 1 in project 1), press cement normal consistency water consumption, time of coagulation, the stability method of inspection (GB1346-89) test, its time of coagulation is normal, and boiling, it is qualified to boil stability.Complex ore slag fine powder, slag thin aggregate, yellow ground three components by weight 1: 1: 1.5 batching (see attached list 1 in project 4), press Test method for strength of hydraulic cement mortar (GB177-85) and tested, and the test specimen performance index have reached silicate cement 525# quality parameter.With complex ore slag fine powder, slag thin aggregate, yellow ground, rubble four components by weight 1: 1: 1: 3 batchings (see attached list 2 in project 1), press the cubic compressive strength test in the normal concrete mechanical test method (GBJ81-85), selecting the length of side for use is the test specimen of 100mm, and its intensity can reach C40.Therefore, the agglutination material that is composited by slag and slag provided by the present invention can be widely used in industry and every field such as covil construction, hydro project, road, airport, is particularly useful for the engineering that early strength and fracture resistance are had higher requirements.
Subordinate list 1
| Project | Proportioning Wt | Water cement ratio * | Ultimate compression strength (Mpa) | Folding strength (Mpa) | ||||||
| Micro mist | Slag | Yellow ground | 3d | 7d | 28d | 3d | 7d | 28d | ||
| 1 | 1 | 1 | 0.29 | 36.6 | 43.6 | 54.5 | 5.4 | 7.6 | 8.8 | |
| 2 | 1 | 1.5 | 0.35 | 19.0 | 35.3 | 54.0 | 4.2 | 7.3 | 8.7 | |
| 3 | 1 | 1 | 1 | 0.30 | 25.3 | 38.9 | 52.6 | 5.8 | 8.3 | 9.7 |
| 4 | 1 | 1 | 1.5 | 0.35 | 34.3 | 44.7 | 57.6 | 7.2 | 8.7 | 9.4 |
| 5 | 1 | 2 | 0.42 | 27.2 | 34.5 | 43.5 | 6.1 | 7.5 | 8.1 | |
Annotate:
*The slag thin aggregate natural moisture content is not included metering in the water cement ratio.
Subordinate list 2
| Project | Proportioning (Wt) | Water cement ratio * | Unit weight (Kg/m 3) | 28d intensity (Mpa) | |||
| Micro mist | Slag | Yellow ground | Rubble | ||||
| 1 | 1 | 1 | 1 | 3 | 0.56 | 2460 | 43.6 |
| 2 | 1 | 1 | 1 | 3.5 | 0.50 | 2480 | 48.2 |
| 3 | 1 | 1 | 1.5 | 3.5 | 0.63 | 2450 | 37.8 |
| 4 | 1 | 1 | 1.5 | 4 | 0.59 | 2470 | 31.5 |
Annotate: the slag thin aggregate natural moisture content is not included metering in the * water cement ratio.
Claims (3)
1. agglutination material that is composited by slag and slag, be used to prepare mortar and concrete, it is characterized in that: this agglutination material is made up of by weight 1: 1 to 1: 2 complex ore slag fine powder and two kinds of components of slag thin aggregate, wherein: complex ore slag fine powder is made up of through levigate 70～85% blast-furnace slag, 8～20% cement clinker and 7～11% gypsum again by weight, and its specific surface area is 3500～7600cm
2/ g; Slag thin aggregate for only through granulated processed or magnetic separation sieve, the particle diameter of its natural grading less than 8mm, store up the time half a year with interior slag.
2. the agglutination material that is composited by slag and slag according to claim 1 is characterized in that: this agglutination material is made up of by weight 1: 1 complex ore slag fine powder and two kinds of components of slag thin aggregate.
3. the agglutination material that is composited by slag and slag according to claim 1 and 2, it is characterized in that: said complex ore slag fine powder is made up of through levigate 80% blast-furnace slag, 11.5% cement clinker and 8.5% clay gypsum by weight, and its specific surface area is 5500～6000cm
2/ g; Said slag thin aggregate is the slag of the particle diameter of its natural grading less than 5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011064749A CN1159248C (en) | 2001-02-14 | 2001-02-14 | Composite cementing material of slag and steel slag |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011064749A CN1159248C (en) | 2001-02-14 | 2001-02-14 | Composite cementing material of slag and steel slag |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1370754A CN1370754A (en) | 2002-09-25 |
| CN1159248C true CN1159248C (en) | 2004-07-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB011064749A Expired - Fee Related CN1159248C (en) | 2001-02-14 | 2001-02-14 | Composite cementing material of slag and steel slag |
Country Status (1)
| Country | Link |
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| CN (1) | CN1159248C (en) |
Families Citing this family (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100406404C (en) * | 2005-06-23 | 2008-07-30 | 上海宝钢冶金建设公司 | Formulating weight concrete using steel dregs as aggregate |
| CN100387541C (en) * | 2005-06-23 | 2008-05-14 | 上海宝钢冶金建设公司 | Road concrete of high wear resisting steel dregs |
| CN100410201C (en) * | 2005-11-18 | 2008-08-13 | 首钢总公司 | Steel slag mortar for construction |
| CN100344569C (en) * | 2005-12-22 | 2007-10-24 | 武汉理工大学 | High efficient wide-spectrum sulfide resistant gelled material and preparation process thereof |
| CN100363295C (en) * | 2005-12-23 | 2008-01-23 | 武汉理工大学 | Gypsum mine plastering material and preparation process thereof |
| CN100391881C (en) * | 2006-06-01 | 2008-06-04 | 武汉理工大学 | Composite gelling material and its preparation method |
| CN101215126B (en) * | 2007-01-05 | 2011-10-19 | 上海宝钢冶金技术服务有限公司 | Steel slag roller compacted concrete |
| CN101858120A (en) * | 2010-06-01 | 2010-10-13 | 武汉钢铁(集团)公司 | Slag composite powder non-fired and non-steamed brick and manufacture method thereof |
| CN101935172B (en) * | 2010-08-25 | 2012-11-28 | 武汉钢铁(集团)公司 | Roller steel slag fine aggregate and composite slag powder cemented material |
| CN102531480B (en) * | 2011-12-28 | 2014-02-26 | 武汉钢铁集团开圣科技有限责任公司 | Gelatinizing agent of mine fillers |
| CN102765897B (en) * | 2012-07-20 | 2013-08-21 | 泰州振昌工业废渣综合利用有限责任公司 | Composite micro-powder made of mineral slag and steel slag |
| CN103011634B (en) * | 2012-12-13 | 2014-11-26 | 武汉钢铁(集团)公司 | Cement-based slag anti-abrasion material |
| CN104326720A (en) * | 2014-10-13 | 2015-02-04 | 武汉钢铁(集团)公司 | Production method for cementing material by utilizing steel slag and cementing material |
| CN104446024A (en) * | 2014-11-25 | 2015-03-25 | 广西鱼峰水泥股份有限公司 | Method for producing high-activity mineral powder |
| CN113800791A (en) * | 2020-06-17 | 2021-12-17 | 宝山钢铁股份有限公司 | Cementing material and preparation method and application thereof |
-
2001
- 2001-02-14 CN CNB011064749A patent/CN1159248C/en not_active Expired - Fee Related
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| Publication number | Publication date |
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| CN1370754A (en) | 2002-09-25 |
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