CN109704612A - A kind of high activity mineral hot furnace slag mineral admixture and preparation method thereof - Google Patents
A kind of high activity mineral hot furnace slag mineral admixture and preparation method thereof Download PDFInfo
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- CN109704612A CN109704612A CN201811608125.7A CN201811608125A CN109704612A CN 109704612 A CN109704612 A CN 109704612A CN 201811608125 A CN201811608125 A CN 201811608125A CN 109704612 A CN109704612 A CN 109704612A
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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
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- 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 invention discloses a kind of high activity mineral hot furnace slag mineral admixtures, are grouped as by the group of the following meter of score by weight: mineral hot furnace ferronickel slag: 30%-60%；Blast furnace slag: 20%-50%；Bottom slag: 8%-15%；Lime stone: 3%-10%；Desulphurization: 2-5%；Exciting agent: 0.01-0.5%.The invention also discloses a kind of preparation methods of high activity mineral hot furnace slag mineral admixture, method includes the following steps: after mineral hot furnace ferronickel slag, blast furnace slag, bottom slag and lime stone are mixed according to the ratio, mix grinding 70-100min in milling equipment is added, obtains mixture；Desulphurization and exciting agent are then mixed with mixture and are homogenized 5-20min, obtains mineral hot furnace ferronickel slag mineral admixture.The activity of mineral hot furnace ferronickel slag mineral admixture prepared by the present invention is high, feeding is extensive, cheap, simple process, conveniently promotes the use, and has significant economic benefit and social benefit.
Description
Technical field
The present invention relates to building material technical field, in particular to a kind of high activity mineral hot furnace slag mineral admixture and its system
Preparation Method.
Background technique
The yield of the development of steel and iron industry, steel slag increases therewith.Refining slag, high slag, mineral hot furnace slag are steel smeltings
Several large waste residues of metal working industry, it is widely distributed throughout the country.Certainly in recent years, with the rapid hair of domestic ferronickel project
Exhibition, the clinker generated every year is more than 10,000,000 tons, but these clinker utilization rates are extremely low, and main disposal options are simple stockpiling, this
Not only waste of resource, but also a large amount of soil is occupied, destroy the ecological environment on periphery.Mineral hot furnace ferronickel slag is as in metallurgical slag
The relatively low one kind of comprehensive utilization ratio is mainly used as and lime stone and alumina produced with combination high alumina cement, concrete in foreign countries
Fine aggregate, with alkali-activator produced with combination composite inorganic polymer etc.；The country still rarely has the research on utilization of mineral hot furnace ferronickel slag
Report.
The chemical component of mineral hot furnace ferronickel slag and blast furnace slag is shown in Table 1.
It can be calculated from table 1, the alkaline coefficient of mineral hot furnace ferronickel slag and blast furnace slag is respectively 0.52 and 0.96, mineral hot furnace nickel
The alkaline coefficient of iron is far below blast furnace slag, and in addition the grindability of mineral hot furnace ferronickel slag is also below blast furnace slag, in grinding process easily
The poly- phenomenon of packet pelletizing is generated, mill efficiency and finish fineness are influenced.In similar specific surface, the 28d activity of blast furnace slag is not
To 50%, and the 28d activity of blast furnace slag reaches 100%, and performance test results are as shown in table 2.
Therefore, if the 28d activity of mineral hot furnace ferronickel ground-slag can be improved to 85% or more, it not only can satisfy construction city
Field demand, while mineral hot furnace ferronickel slag can be largely consumed, this will be for the resource utilization of mineral hot furnace ferronickel slag and its to soil
Occupancy and play a positive role to the pollution of environment.
Summary of the invention
(1) technical problems to be solved
In view of the above-mentioned deficiencies in the prior art, it is an object of the present invention to provide a kind of extensive, the cheap, simple process of materials and fit
Conjunction promotes the use, and has distinct economic and the high activity mineral hot furnace slag mineral admixture of social benefit and preparation method thereof.
(2) technical solution
In order to solve the above-mentioned technical problem, the invention discloses such a high activity mineral hot furnace slag mineral admixtures, by following
The group of score meter by weight is grouped as: mineral hot furnace ferronickel slag: 30%-60%；Blast furnace slag: 20%-50%；Bottom slag: 8%-15%；Lime
Stone: 3%-10%；Desulphurization: 2-5%；Exciting agent: 0.01-0.5%；The sum of weight percent of the above components is 100%.
Preferably, the high activity mineral hot furnace slag mineral admixture is grouped as by the group of the following meter of score by weight: mine heat
Furnace ferronickel slag: 40%；Blast furnace slag: 39.8%；Bottom slag: 10%；Lime stone: 6%；Desulphurization: 4%；Exciting agent: 0.2%；
Preferably, the mineral hot furnace ferronickel slag is the solid slag that mine heat furnace smelting nickel-iron alloy generates.
Preferably, the blast furnace slag is the solid slag that blast furnace process steel generates.
Preferably, the bottom slag be coal burn in boiler furnace generate slave hearth deslagging mouth be discharged ash
Slag.
Preferably, the lime stone adds from tail mud, mill tailings, the marble of natural limestone mine, Metallurgy Industry
One of tailings or a variety of mixtures of industry, wherein CaO content >=45%.
Preferably, the Desulphurization is the trade waste that industrial waste gas generates after semidry method or dry desulfurization.
Preferably, the exciting agent is one of hydramine type organic or modified hydramine type organic or a variety of
Mixture.
On the other hand, the invention discloses a kind of preparation method of high activity mineral hot furnace slag mineral admixture, the systems
Preparation Method the following steps are included:
After mineral hot furnace ferronickel slag, blast furnace slag, bottom slag and lime stone are mixed according to the ratio, mix grinding 70- in milling equipment is added
100min obtains mixture；Desulphurization and exciting agent are then mixed with mixture and are homogenized 5-20min, obtains mineral hot furnace ferronickel
Slag mineral admixture.
Preferably, the time that mix grinding in milling equipment is added is 80min, and the Desulphurization, exciting agent, mixture are mixed
The time for merging homogenizing is 15min.
(3) beneficial effect
Compared with prior art, the present invention method of the invention can be effectively improved packet ball of the mineral hot furnace ferronickel slag in grinding process
And agglomeration, mill efficiency is promoted, grinding energy is reduced；The overall activity of mineral admixture can be improved in blast furnace slag；Bottom slag
The particle diameter distribution of finished product can be improved；Desulphurization can balanced granulated blast-furnace ferronickel ground-slag acidity, to improve granulated blast-furnace ferronickel
The activity of ground-slag, the activity that cooperation exciting agent can effectively improve mineral hot furnace ferronickel slag reach 5%-15%.
Specific embodiment
The present invention is described in detail with different preparation methods below, cited embodiment can make this profession
Technical staff more understand the present invention, but the invention is not limited in any way, and the present invention can be such as extended to other Building woods
It is applied in the processing of material technology.
Comparative example 1: the proportion in the first mineral admixture in the prior art: mineral hot furnace ferronickel slag content is 100%；
Then, mineral hot furnace ferronickel slag is put into ball mill, after mix grinding 70min, observes packet ball situation, and measure granulated blast-furnace ferronickel slag
The specific surface area and activity index of powder, the result is shown in tables 3；
The proportion in mineral admixture in the prior art of comparative example 2: second: mineral hot furnace ferronickel slag: 97%, lime stone: 3%；So
Afterwards, mineral hot furnace ferronickel slag and lime stone are put into ball mill, after mix grinding 70min, observe packet ball situation, and measure granulated blast-furnace
The specific surface area and activity index of ferronickel ground-slag, the result is shown in tables 3；
Embodiment 1: mineral hot furnace ferronickel slag: 40%；Blast furnace slag: 39.8%；Bottom slag: 10%；Lime stone: 6%；Desulphurization: 4%；Excitation
Agent: 0.2%；Then, mineral hot furnace ferronickel slag and lime stone are put into ball mill, after mix grinding 70min, observe packet ball situation, and survey
Determine the specific surface area and activity index of granulated blast-furnace ferronickel ground-slag, the result is shown in tables 3；
Embodiment 2: mineral hot furnace ferronickel slag: 40%；Blast furnace slag: 39.8%；Bottom slag: 10%；Lime stone: 6%；Desulphurization: 4%；Excitation
Agent: 0.2%；Then, mineral hot furnace ferronickel slag, blast furnace slag, bottom slag and lime stone are put into ball mill, after mix grinding 80min, are seen
Packet ball situation is examined, Desulphurization is added and exciting agent mixes and be homogenized 15min, and measures the specific surface area and activity of mineral admixture
Index, the result is shown in tables 3；
Embodiment 3: mineral hot furnace ferronickel slag: 40%；Blast furnace slag: 39.8%；Bottom slag: 10%；Lime stone: 6%；Desulphurization: 4%；Excitation
Agent: 0.2%；Then, mineral hot furnace ferronickel slag, blast furnace slag, bottom slag and lime stone are put into ball mill, after mix grinding 80min, are seen
Packet ball situation is examined, Desulphurization is added and exciting agent mixes and be homogenized 10min, and measures the specific surface area and activity of mineral admixture
Index, the result is shown in tables 3；
Embodiment 4: mineral hot furnace ferronickel slag: 40%；Blast furnace slag: 39.8%；Bottom slag: 10%；Lime stone: 6%；Desulphurization: 4%；Excitation
Agent: 0.2%；Then, mineral hot furnace ferronickel slag, blast furnace slag, bottom slag and lime stone are put into ball mill, after mix grinding 100min, are seen
Packet ball situation is examined, Desulphurization is added and exciting agent mixes and be homogenized 5min, and measures the specific surface area and activity of mineral admixture
Index, the result is shown in tables 3；
Embodiment 5: mineral hot furnace ferronickel slag: 40%；Blast furnace slag: 39.8%；Bottom slag: 10%；Lime stone: 6%；Desulphurization: 4%；Excitation
Agent: 0.2%；Then, mineral hot furnace ferronickel slag, blast furnace slag, bottom slag and lime stone are put into ball mill, after mix grinding 80min, are seen
Packet ball situation is examined, Desulphurization is added and exciting agent mixes and be homogenized 20min, and measures the specific surface area and activity of mineral admixture
Index, the result is shown in tables 3；
Embodiment 6: mineral hot furnace ferronickel slag: 30%；Blast furnace slag: 50%；Bottom slag: 14.5%；Lime stone: 3%；Desulphurization: 2%；Excitation
Agent: 0.5%；Then, mineral hot furnace ferronickel slag, blast furnace slag, bottom slag and lime stone are put into ball mill, after mix grinding 80min, are seen
Packet ball situation is examined, Desulphurization is added and exciting agent mixes and be homogenized 15min, and measures the specific surface area and activity of mineral admixture
Index, the result is shown in tables 3；
Embodiment 7: mineral hot furnace ferronickel slag: 60%；Blast furnace slag: 20%；Bottom slag: 10%；Lime stone: 4.99%；Desulphurization: 5%；Swash
Hair agent: 0.01%；Then, mineral hot furnace ferronickel slag, blast furnace slag, bottom slag and lime stone are put into ball mill, after mix grinding 80min,
Packet ball situation is observed, Desulphurization is added and exciting agent mixes and be homogenized 15min, and measures the specific surface area and work of mineral admixture
Property index, the result is shown in tables 3；
Embodiment 8: mineral hot furnace ferronickel slag: 50%；Blast furnace slag: 27.6%；Bottom slag: 8%；Lime stone: 10%；Desulphurization: 4%；Excitation
Agent: 0..4%；Then, mineral hot furnace ferronickel slag, blast furnace slag, bottom slag and lime stone are put into ball mill, after mix grinding 80min, are seen
Packet ball situation is examined, Desulphurization is added and exciting agent mixes and be homogenized 15min, and measures the specific surface area and activity of mineral admixture
Index, the result is shown in tables 3；
Embodiment 9: mineral hot furnace ferronickel slag: 41.5%；Blast furnace slag: 35.5%；Bottom slag: 15%；Lime stone: 5.5%；Desulphurization: 2%；
Exciting agent: 0.5%；Then, mineral hot furnace ferronickel slag, blast furnace slag, bottom slag and lime stone are put into ball mill, mix grinding 80min
Afterwards, packet ball situation is observed, Desulphurization is added and exciting agent mixes and be homogenized 15min, and measures the specific surface area of mineral admixture
And activity index, the result is shown in tables 3；
According in table 3, specific surface area is referring in GB/T8074-2008 " Method of determination for specific surface of cement (Bo Shi method) " standard
Regulation is measured, and activity index is referring to GB/T18046-2008 " with the graining blast-furnace cinder micro-powder in water cement and concrete "
Regulation in standard is measured.As can be seen from Table 3: 1. by the data of comparative example 1, comparative example 2 and embodiment 1 we
It is known that increasing blast furnace slag, bottom slag, Desulphurization, exciting agent, the specific surface area of mineral hot furnace ferronickel slag, Er Qietong are improved
The addition of Desulphurization and exciting agent is crossed, the activity of mineral admixture is greatly improved；
2. it can compare and learn by embodiment 1- embodiment 5, in the proportion situation of the same terms, i.e., " mineral hot furnace ferronickel slag:
40%；Blast furnace slag: 39.8%；Bottom slag: 10%；Lime stone: 6%；Desulphurization: 4%；Exciting agent: in the case where 0.2% ", the mix grinding time
80min, be added Desulphurization and exciting agent mix and be homogenized 15min effect it is best；
3. can compare and learn, in the mix grinding of the same terms by embodiment 2, embodiment 6, embodiment 7, embodiment 8, embodiment 9
Mineral hot furnace ferronickel slag, blast furnace slag, bottom slag and lime stone, i.e., " be put into ball mill, mix grinding 80min by duration and homogenizing duration
It adds Desulphurization and exciting agent is mixed and is homogenized under conditions of 15min ", according to different ratio, when " mineral hot furnace ferronickel slag:
30%；Blast furnace slag: 50%；Bottom slag: 14.5%；Lime stone: 3%；Desulphurization: 2%；Exciting agent: 0.5%；" ratio table in experimental data
Area and level of activity highest, but due to because blast furnace slag score content is more specific surface area and activity index is caused to reach
98%；But in real plant operation, the preferred plan actually chosen is embodiment 2, i.e. " mineral hot furnace ferronickel slag: 40%；Blast furnace
Slag: 39.8%；Bottom slag: 10%；Lime stone: 6%；Desulphurization: 4%；Exciting agent: 0.2% ".
Therefore, after using the present invention, the mill efficiency of granulated blast-furnace ferronickel slag can not only be improved, improves mineral hot furnace
The specific surface area of ferronickel slag, moreover it is possible to by the addition of Desulphurization and exciting agent, greatly improve the activity of mineral admixture, make
Its 28d activity can still reach 90% or more.
The above is the embodiment of the present invention, all equivalent changes done according to scope of the present invention patent with repair
Decorations, are all covered by the present invention.
Claims (10)
1. a kind of high activity mineral hot furnace slag mineral admixture, it is characterised in that: be grouped as by the group of the following meter of score by weight:
Mineral hot furnace ferronickel slag: 30%-60%；
Blast furnace slag: 20%-50%；
Bottom slag: 8%-15%；
Lime stone: 3%-10%；
Desulphurization: 2-5%；
Exciting agent: 0.01-0.5%；
The sum of weight percent of the above components is 100%.
2. a kind of high activity mineral hot furnace slag mineral admixture according to claim 1, it is characterised in that: the mineral hot furnace
Ferronickel slag is the solid slag that mine heat furnace smelting nickel-iron alloy generates.
3. a kind of high activity mineral hot furnace slag mineral admixture according to claim 1, it is characterised in that: the blast furnace slag
The solid slag generated for blast furnace process steel.
4. a kind of high activity mineral hot furnace slag mineral admixture according to claim 1, it is characterised in that: the bottom slag
The lime-ash that the slave hearth deslagging mouth generated that burns in boiler furnace for coal is discharged.
5. a kind of high activity mineral hot furnace slag mineral admixture according to claim 1, it is characterised in that: the lime stone
From natural limestone mine, the tail mud of Metallurgy Industry, mill tailings, one of the tailings of Marble processing industry or a variety of mixed
Object is closed, wherein CaO content >=45%.
6. a kind of high activity mineral hot furnace slag mineral admixture according to claim 1, it is characterised in that: the Desulphurization
The trade waste generated after semidry method or dry desulfurization for industrial waste gas.
7. a kind of high activity mineral hot furnace slag mineral admixture according to claim 1, it is characterised in that: the exciting agent
For one of hydramine type organic or modified hydramine type organic or a variety of mixtures.
8. a kind of high activity mineral hot furnace slag mineral admixture according to claim 1, it is characterised in that: by it is following by weight
The group of score meter is grouped as:
Mineral hot furnace ferronickel slag: 40%；
Blast furnace slag: 39.8%；
Bottom slag: 10%；
Lime stone: 6%；
Desulphurization: 4%；
Exciting agent: 0.2%.
9. a kind of preparation method of high activity mineral hot furnace slag mineral admixture according to claim 1, it is characterised in that: packet
It includes following steps: after mineral hot furnace ferronickel slag, blast furnace slag, bottom slag and lime stone are mixed according to the ratio, being added in milling equipment and mix
70-100min is ground, mixture is obtained；Desulphurization and exciting agent are then mixed with mixture and are homogenized 5-20min, obtains mineral hot furnace
Ferronickel slag mineral admixture.
10. a kind of preparation method of high activity mineral hot furnace slag mineral admixture according to claim 9, it is characterised in that:
The time of mix grinding is 80min, the time that the Desulphurization, exciting agent, mixture are mixed and be homogenized in the addition milling equipment
For 15min.
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Cited By (1)
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| CN112551939A (en) * | 2020-11-20 | 2021-03-26 | 福州大学 | Ferronickel slag and steel slag composite powder high-grade concrete admixture and preparation method thereof |
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