CN107572852A - A kind of production method of high-performance ground granulated blast furnace slag - Google Patents
A kind of production method of high-performance ground granulated blast furnace slag Download PDFInfo
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- CN107572852A CN107572852A CN201711084794.4A CN201711084794A CN107572852A CN 107572852 A CN107572852 A CN 107572852A CN 201711084794 A CN201711084794 A CN 201711084794A CN 107572852 A CN107572852 A CN 107572852A
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- granulated blast
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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
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- Y02W30/91—Use of waste materials as fillers for mortars or concrete
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Abstract
The present invention relates to a kind of production method of high-performance ground granulated blast furnace slag, its production stage is：The flour mill that energy consumption is low, abrasion are low, automaticity is high is used first as primary milling equipment, and the specific surface area of preliminary grinding slag powders is controlled between 400~450m2/kg；Whole level grinding is carried out to preliminary grinding slag powders with whole level milling equipment again, and by the control of finished product specific surface area between 520~550m2/kg；0.5%~5% alkali-activator is added in whole level grinding process, blast-furnace cinder is carried out effective alkali-activated carbonatite while whole level mechanical excitation is carried out, so as to which the lateral reactivity of blast-furnace cinder is brought into play as soon as possible, and is turned into high-quality mineral admixture.Product be used for ultra-high performance concrete in, can reduce resource scarcity, expensive silicon ash in compound system volume 30% or so.
Description
Technical field
The invention belongs to New Building Materials technical field, is related to a kind of producer of high-performance ground granulated blast furnace slag
Method.
Background technology
A kind of waste residue discharged when blast-furnace cinder is manUfaCtUre of pig iron from blast furnace.The original of blast furnace is added in manUfaCtUre of pig iron
Material, in addition to iron ore and fuel (coke), will also add a certain amount of fusing agent ore（Lime stone, dolomite etc.）, when furnace temperature reaches
During to 1400~1600 DEG C, with iron ore the pyroreaction generation pig iron and slag occur for fusing agent ore.Blast-furnace cinder is by gangue, ash
Divide, a kind of eutectic mixtures for impurity composition that fusing agent ore can not enter in the pig iron with other.Liquid slag of coming out of the stove is through water quenching chilling
After become as " granulated blast-furnace slag ", because blast-furnace cinder belongs to phyllosilicate material, tapping temperature is higher, and cooling velocity is got over
It hurry up, then slag glass degree is higher, and the potential chemical energy of slag is bigger, and activity is also higher.
China's pig iron annual production is about 700,000,000 tons, and 300kg or so blast-furnace cinder can be produced by often producing 1 ton of pig iron, then China
Blast-furnace cinder is produced per year at 200,000,000 tons or so, using mechanical grinding method（That is mechanical agitation method）Blast-furnace cinder is processed into certain
It is the active most important means of countries in the world activated slag that the powder of fineness, which is used to substitute part high grade silicate cement, and powder
It is more based on energy consumption is low, abrasion are low, automaticity is high Vertical Mill to grind equipment, it is national to have built up ground granulated blast furnace slag and stand
Nearly 370 of grinding production line, 200,000,000 tons of granulated blast-furnace slags that iron and steel enterprise is discharged can be digested.All slag powders lifes in the whole nation
Producing line product presses GB/T18046-2008《For the ground granulated blast furnace slag in cement and concrete》Judge its performance indications only
S95 levels can be reached, performance indications still belong to blank at home higher than the high-performance ground granulated blast furnace slag of S105 levels.
《High performance concrete evaluation criterion》Middle regulation：The slag powders used in high performance concrete must meet S95 or
S105 level technical requirements, and qualified batch is no less than the 90% of total lot amount.Mineral admixture is the important set of high performance concrete
/ mono-, the technology of mixing is to realize one of effective way of high performance concrete to polynary mineral admixture again.Multiple elements design mineral are mixed
Close material and micro aggregate effect, shape effect, interfacial effect, volcano ash effect etc. can be achieved.High-quality slag powders and high-quality fly ash, silicon
The admixture such as ash Composite by be mineral admixture development inexorable trend.
GB/T 31289-2014《Extra large work portland cement》Clear stipulaties slag powders, flyash and silicon ash in its composition
Weight than amount to reach 50-70%, the formulation and execution of this standard, for slag powders large dosage application and popularization has cleared away barrier
Hinder, and the trend of large dosage slag powders cement development, but slag powders therein must be that performance indications reach at or above S105
The high-performance ground granulated blast furnace slag of level technical requirements.
Ultra-high performance concrete（Ultra-HighPerformanceConcrete, UHPC）It is a kind of high intensity, high-ductility
Property, the ultra-high-strength cement-based composites of low porosity, be a kind of mechanical property for occurring after the high-strength, high performance concrete and resistance to
The more superior New Building Materials of long property.UHPC preparation be unable to do without the high-quality mineral such as high-performance ground granulated blast furnace slag and blended
Material, high-performance ground granulated blast furnace slag part substitution cement, can supplement the intermediate particle between silicon ash and cement granules, can enter
The grain composition of one-step optimization system, system cost is reduced, be the only way of UHPC greenizations.
High-performance ground granulated blast furnace slag has significant technology economy advantage for preparing precast concrete：Gao Xing
Energy ground granulated blast furnace slag activity compared with other admixtures such as high-quality fly ash, silicon ash is high, especially in steam curing condition
Under（Most factory for prefabrication uses）, advantageously in the hydration reaction of slag powders.High-performance ground granulated blast furnace slag can conduct
The early strength agent of precast concrete, the early strength of concrete is improved, so as to shorten demoulding time, reduce the breakage of prefabricated components
Rate.
The content of the invention
In order to overcome the disadvantages mentioned above of prior art, the present invention provides a kind of producer of high-performance ground granulated blast furnace slag
Method, it can make ground granulated blast furnace slag performance indications more than GB/T18046-2008《For the granulation in cement and concrete
Ground granulated blast furnace slag》S105 level technical requirements, the specific surface area of the ground granulated blast furnace slag produced in more than 500m2/kg,
Product is detected by GB/T18046-2008,7 days activity index ＞ 95%, 28 days activity index ＞ 105%, and fluidity compares ＞
95%, and the granule-morphology of powder is subsphaeroidal, product is used in ultra-high performance concrete, can reduce resource scarcity, expensive
Silicon ash in compound system volume 30% or so.
The technical solution adopted for the present invention to solve the technical problems is：A kind of production of high-performance ground granulated blast furnace slag
Method, its production stage are：
The flour mill that energy consumption is low, abrasion are low, automaticity is high is used first as primary milling equipment, by the ratio of preliminary grinding slag powders
Surface area is controlled between 400~450m2/kg；Whole level grinding is carried out to preliminary grinding slag powders with whole level milling equipment again, and will eventually
Product specific surface area is controlled between 520~550m2/kg；0.5%~5% alkali-activator is added in whole level grinding process,
Blast-furnace cinder is set to carry out effective alkali-activated carbonatite while whole level mechanical excitation is carried out, so as to by the potential work of blast-furnace cinder
Property is brought into play as soon as possible, and turns into high-quality mineral admixture.
The primary milling equipment is Vertical Mill, the flour mill that roll mill energy consumption is low, abrasion are low, automaticity is high.
The whole level milling equipment be tube mill with cyclone type powder sorting machine, vortex powder separator, centrifugal classifier, three points
From the closed-circuit grinding system of any one composition in powder concentrator, O-Sepa powder concentrators, rotor type powder sorter equigranular classifying equipoment
System.
0.5%~5% alkali-activator is added in the whole level grinding process, is in powder concentrator outlet duct for tailings grinding machine
Added in the course of conveying of closed-circuit grinding.
The alkali-activator is can effectively to excite aluminosilicate glass body (Al in granulated blast-furnace slag2O3·2SiO2) alkali
Property material, such as dihydrate gypsum, bassanite, solid water glass, alum, desulfurated plaster, natrium nitrosum, sodium sulphate, triethanolamine
Concrete often uses additive.
The positive effect of the present invention is：Excited using secondary mechanical（That is two level grinding）Can be by Vertical Mill or roll mill slag
The specific surface area of powder brings up to more than 520m2/kg with minimum grinding energy by 420m2/kg or so；Can be by Vertical Mill or roll-in
The sheet slag powders particle shape of mill is modified to subsphaeroidal with amorphous spherical shape and silicon ash that surface is relatively smooth is close；Right
While blast-furnace cinder carries out whole level mechanical excitation, effective alkali-activated carbonatite is carried out, so as to which the lateral reactivity of blast-furnace cinder is use up
Early bring into play, make high-quality mineral admixture.
Product is carried out judging that property indices are superior to S105 level technical requirements by GB/T18046-2008, that is, compares surface
Accumulate in more than 520m2/kg, 7 days activity index ＞ 95%, 28 days activity index ＞ 105%, fluidity is than ＞ 95%;Mix high property
The super high strength concrete service behaviour of energy ground granulated blast furnace slag is good, and stably；With 30% or so high-performance granulated blast-furnace ore deposit
The intensity and combination property of the super high strength concrete of ground-slag equivalent substitution silicon ash production are more preferable；Mix high-performance granulated blast-furnace slag
Powder can make super high strength concrete have more excellent durability.
Embodiment
With reference to embodiment, the present invention is further described.
A kind of production method of high-performance ground granulated blast furnace slag, its production stage are：
Using Vertical Mill or roll mill as primary milling equipment, granulated blast-furnace slag is milled into specific surface area in 430m2/kg first
Left and right, 0.045mm square hole screens are tailed over below 5%, are then fed into tube mill head storehouse；Secondly by the preliminary grinding slag in bistrique storehouse
Powder is sent into the closed-circuit grinding system of tube mill and powder concentrator composition through the sealed conveying equipment such as air conveyer flume, conveying worm
In system, go out grind materials and carried transporting to by bucket elevator to carry out grading in powder concentrator, adjustment powder concentrator operational factor makes fine powder
Specific surface area is more than 520m2/kg, 45 μm of square hole screens tail over ＜ 1%, and coarse powder sends pipe back to by air conveyer flume or conveying worm
In the way of grinding machine, add and account for the alkali-activator of tube mill unit-hour output 0.5%~5%, as effectively exciting granulated blast-furnace slag
The chemical activator of middle aluminosilicate glass body, fully to excite the lateral reactivity of granulated blast-furnace slag, makes finished product refer to as performance
High-performance ground granulated blast furnace slag of the mark better than S105 level technical requirements.
Gained high-performance ground granulated blast furnace slag presses GB/T18046-2008《For the granulated blast-furnace in cement and concrete
Slag powders》Detected, index is shown in Table 1.
The S105 levels technical requirements of the high-performance ground granulated blast furnace slag of table 1 and GB/T18046-2008 contrast
| Project | Fluidity ratio | 7d activity indexs | 28d activity indexs | Specific surface area |
| GB/T18046-2008 | ≥95% | ≥95% | ≥105% | ≥500m2/kg |
| High-performance ground granulated blast furnace slag | ＞ 96 | ＞ 96 | ＞ 105% | ＞ 520m2/kg |
Embodiment 1：
Using RMS51/26/435 Vertical Mills as primary milling equipment, ground granulated blast furnace slag is milled to a specific surface area 430m2/kg left sides
The right side, it is then fed into tube mill head storehouse；Preliminary grinding slag powders in bistrique storehouse are sent into through helix balance, air conveyer flume and elevator
The closed-circuit grinding system being made up of 3 × 9m of Φ tube mills and F1000 vortex powder separators carries out whole level grinding, goes out grind materials by carrying
The machine of liter, which carries, is transported to F1000 vortex powder separators progress grading, and adjusting powder concentrator air quantity and rotating speed makes fine powder specific surface area ＞
520m2/kg, 0.045 square hole screen tail over<1%；Coarse powder is transported in the way of tube mill by air conveyer flume, and addition accounts for tube mill
The solid water glass of unit-hour output 3% and 0.6% natrium nitrosum, as effectively exciting aluminosilicate glass body in granulated blast-furnace slag
Chemical activator, fully to excite the lateral reactivity of granulated blast-furnace slag, finished product is set to be better than S105 level skills as performance indications
The high-performance ground granulated blast furnace slag of art requirement.
Gained high-performance ground granulated blast furnace slag presses GB/T18046-2008《For the granulated blast-furnace in cement and concrete
Slag powders》Detected, index contrast is shown in Table 2.
The S105 levels technical requirements of the high-performance ground granulated blast furnace slag of table 2 and GB/T18046-2008 contrast
| Project | Fluidity ratio | 7d activity indexs | 28d activity indexs | Specific surface area |
| GB/T18046-2008 | ≥95% | ≥95% | ≥105% | ≥500m2/kg |
| High-performance ground granulated blast furnace slag | ＞ 100 | ＞ 100 | ＞ 110% | ＞ 526m2/kg |
Embodiment 2：
Using RMS51/26/435 Vertical Mills as primary milling equipment, ground granulated blast furnace slag is milled to a specific surface area 450m2/kg left sides
The right side, it is then fed into tube mill head storehouse；Preliminary grinding slag powders in bistrique storehouse are sent into through helix balance, air conveyer flume and elevator
The closed-circuit grinding system being made up of 2.2 × 7.5m of Φ tube mills and O-Sepa350 type powder concentrators carries out whole level grinding, goes out grind materials
Carried by elevator and be transported to O-Sepa350 types powder concentrator progress grading, adjusting powder concentrator air quantity and rotating speed makes fine powder compare surface
Product >=520m2/kg, 0.045 square hole screen tail over<1%；Coarse powder is transported in the way of tube mill by air conveyer flume, and addition accounts for pipe
The dihydrate gypsum of mill hourly output 3% and 0.06% triethanolamine, as effectively exciting aluminosilicate glass in granulated blast-furnace slag
The chemical activator of body, fully to excite the lateral reactivity of granulated blast-furnace slag, finished product is set to be better than S105 as performance indications
The high-performance ground granulated blast furnace slag of level technical requirements.
Gained high-performance ground granulated blast furnace slag presses GB/T18046-2008《For the granulated blast-furnace in cement and concrete
Slag powders》Detected, index contrast is shown in Table 3.
The S105 levels technical requirements of the high-performance ground granulated blast furnace slag of table 3 and GB/T18046-2008 contrast
| Project | Fluidity ratio | 7d activity indexs | 28d activity indexs | Specific surface area |
| GB/T18046-2008 | ≥95% | ≥95% | ≥105% | ≥500m2/kg |
| High-performance ground granulated blast furnace slag | ＞ 98 | ＞ 98 | ＞ 108% | ＞ 530m2/kg |
Claims (5)
1. a kind of production method of high-performance ground granulated blast furnace slag, it is characterised in that production stage is：
The flour mill that energy consumption is low, abrasion are low, automaticity is high is used first as primary milling equipment, by the ratio of preliminary grinding slag powders
Surface area is controlled between 400~450m2/kg；Whole level grinding is carried out to preliminary grinding slag powders with whole level milling equipment again, and will eventually
Product specific surface area is controlled between 520~550m2/kg；0.5%~5% alkali-activator is added in whole level grinding process,
Blast-furnace cinder is set to carry out effective alkali-activated carbonatite while whole level mechanical excitation is carried out, so as to by the potential work of blast-furnace cinder
Property is brought into play as soon as possible, and turns into high-quality mineral admixture.
2. the production method of high-performance ground granulated blast furnace slag as claimed in claim 1, it is characterised in that：The primary grinding is set
Standby is Vertical Mill, the flour mill that roll mill energy consumption is low, abrasion are low, automaticity is high.
3. the production method of high-performance ground granulated blast furnace slag as claimed in claim 1, it is characterised in that：The whole level grinding is set
It is standby be tube mill with cyclone type powder sorting machine, vortex powder separator, centrifugal classifier, three composition dividing powder separating machine, O-Sepa powder concentrators,
The closed-circuit grinding system of any one composition in rotor type powder sorter size classification apparatus.
4. the production method of high-performance ground granulated blast furnace slag as claimed in claim 1, it is characterised in that：In the whole level grinding
During add 0.5%~5% alkali-activator, be powder concentrator outlet duct for tailings grinding machine carry out closed-circuit grinding course of conveying
Middle addition.
5. the production method of high-performance ground granulated blast furnace slag as claimed in claim 1, it is characterised in that：The alkali-activator
It is that can effectively excite aluminosilicate glass body (Al in granulated blast-furnace slag2O3·2SiO2) alkaline matter, such as dihydrate gypsum, scoria
Cream, solid water glass, alum, desulfurated plaster, natrium nitrosum, sodium sulphate, triethanolamine concrete often use additive.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108341618A (en) * | 2018-02-05 | 2018-07-31 | 无锡金木土科技有限公司 | A kind of non-steamed reactive powder concrete admixture and production method |
| CN110255941A (en) * | 2019-07-27 | 2019-09-20 | 山东莱钢永锋钢铁有限公司 | A kind of desulfurized gypsum reuse method |
| CN110862240A (en) * | 2019-12-03 | 2020-03-06 | 山东永正水泥有限公司 | Slag micro powder, admixture thereof, preparation method and application thereof, and cement and/or concrete |
| CN112979202A (en) * | 2021-02-09 | 2021-06-18 | 内蒙古宏尔高新材料科技有限公司 | Liquid modified excitant for finely ground and granulated blast furnace slag powder and preparation method thereof |
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| CN102417939A (en) * | 2011-12-09 | 2012-04-18 | 韶关市柏林再生资源开发有限公司 | Method for preparing high-activity powder by using dry blast furnace slag |
| CN105130233A (en) * | 2015-09-04 | 2015-12-09 | 郭心岭 | Functional steel slag powder |
| CN105217987A (en) * | 2015-09-04 | 2016-01-06 | 郭心岭 | The complex slag utilizing electric arc furnace restored slag and flyash to produce and preparation technology thereof |
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| CN1559690A (en) * | 2004-02-26 | 2005-01-05 | 莱芜钢铁集团有限公司 | Blast furnace cinder powder grinding technology |
| CN101519285A (en) * | 2009-03-04 | 2009-09-02 | 上海梅山钢铁股份有限公司 | Composite powder excitant of steel slag powder, granulated blast furnace slag powder and steel scruff, preparation and application of the composite powder excitant |
| CN102417939A (en) * | 2011-12-09 | 2012-04-18 | 韶关市柏林再生资源开发有限公司 | Method for preparing high-activity powder by using dry blast furnace slag |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108341618A (en) * | 2018-02-05 | 2018-07-31 | 无锡金木土科技有限公司 | A kind of non-steamed reactive powder concrete admixture and production method |
| CN110255941A (en) * | 2019-07-27 | 2019-09-20 | 山东莱钢永锋钢铁有限公司 | A kind of desulfurized gypsum reuse method |
| CN110862240A (en) * | 2019-12-03 | 2020-03-06 | 山东永正水泥有限公司 | Slag micro powder, admixture thereof, preparation method and application thereof, and cement and/or concrete |
| CN112979202A (en) * | 2021-02-09 | 2021-06-18 | 内蒙古宏尔高新材料科技有限公司 | Liquid modified excitant for finely ground and granulated blast furnace slag powder and preparation method thereof |
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