CN108238731A - The ultrafine slag powder and its preparation system and method for a kind of blast furnace ferronickel slag manufacture - Google Patents
The ultrafine slag powder and its preparation system and method for a kind of blast furnace ferronickel slag manufacture Download PDFInfo
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- CN108238731A CN108238731A CN201810209338.6A CN201810209338A CN108238731A CN 108238731 A CN108238731 A CN 108238731A CN 201810209338 A CN201810209338 A CN 201810209338A CN 108238731 A CN108238731 A CN 108238731A
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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
- C04B7/00—Hydraulic cements
- C04B7/14—Cements containing slag
- C04B7/147—Metallurgical slag
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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
- 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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- Ceramic Engineering (AREA)
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- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention belongs to building material fields, and in particular to a kind of ultrafine slag powder and its preparation system method of the manufacture of blast furnace ferronickel slag.The raw material for preparing the ultrafine slag powder includes：Blast furnace ferronickel slag and industrial residue；The blast furnace josephinite slag mass fraction is 90 95 parts, the mass fraction of the industrial residue is 5 10 parts.The present invention is by blast furnace ferronickel slag and industrial residue reasonable material, proportioning, it is formulated by way of optimization with parameter, the quality of obtained slag powders can be up to state standards specified in GB/T18046 2008 S105 grades, the slag powder fineness is small, large specific surface area, it is active high, it receives praises from customers；The present invention utilizes blast furnace ferronickel slag to mix other industrial residues and manufactures the advantages that S105 grades of ultrafine slag powders are used for concrete, improve the performance of the concrete, improve concrete strength, improve the gain in strength phase of concrete, improve Building life cycle.
Description
Technical field
The invention belongs to building material fields, and in particular to a kind of ultrafine slag powder of blast furnace ferronickel slag manufacture and its preparation
Systems approach.The performance of the ultrafine slag powder can reach specified in standard GB/T/T18046-2008 S105 grades, can
Replacing partial cement prepares concrete and improves the performance of concrete, has preferable economic benefit and social benefit.
Background technology
At present, blast furnace ferronickel slag is a kind of solid slag of exclusion during the blast furnace process ferronickel for producing stainless steel, is passed through
Water Quenching forms granulated slag, and a large amount of of blast furnace ferronickel slag store up not only land occupation, return environment and bring serious dirt
Dye and harm.Blast furnace ferronickel dreg chemistry ingredient is generally comprises according to quality parts ratio：
| CaO | MgO | SiO2 | Fe2O3 | Al2O3 | SO3 |
| 25.76 | 7.86 | 22.03 | 3.6 | 20.05 | 0.93。 |
It can be seen that since CaO content is low in mineral hot furnace slag, SiO2Content is low, Al2O3Content is high, causes the waste residue because of work
Property low cause using being extremely limited.According to investigations, pile up like a mountain for the mineral hot furnace slag of blast furnace process ferronickel discharge in all parts of the country,
Only a small amount of waste residue is applied, and can only achieve S75 grade slag powders skill specified in GB/T18046-2008 national standards
Art index.
A kind of Chinese patent application " multi-functional compound mixing material and its preparation process and application " (application number
201710304340.7) a kind of composite material is disclosed in, the material is mainly by steel plant's smelting steel scum, Stainless Steel Plant town iron
Six kinds of slag waste material, urban building waste waste material, Marble processing waste material, iron ore powdered tailings, granite mine tailing raw material compositions,
This kind of mixing material can be used as cement mate, S95 miberal powder companions, the alternative existing construction material in part.But the mixing material
Quality be only capable of using as miberal powder companion, can not be used as miberal powder, application range is extremely limited.
It there is no at present both at home and abroad and reach S105 grades of ultrafine slag powder for primary raw material manufacturing property using blast furnace ferronickel slag.
Therefore, in current production practices, need it is a kind of for concrete, blast furnace ferronickel slag is utilized to mix the manufacture of other industrial residues
Be up to state standards the preparation method of S105 specified in GB/T18046-2008 grades of ultrafine slag powder.
Invention content
The present invention provides a kind of ultrafine slag powder of blast furnace ferronickel slag manufacture and preparation method thereof.
The present invention is achieved by the following technical solutions：
A kind of ultrafine slag powder of blast furnace ferronickel slag manufacture, the raw material for preparing the ultrafine slag powder include：Blast furnace ferronickel
Slag and industrial residue；The blast furnace josephinite slag mass fraction is 90-95 parts, the mass fraction of the industrial residue is 5-10
Part；Preferably, the blast furnace josephinite slag mass fraction is 92 parts, the mass fraction of the industrial residue is 8 parts.
As preferred embodiment, the specific surface area of the ultrafine slag powder is 500-550m2/ kg, preferably 520-
530m2/kg。
As preferred embodiment, the ultrafine slag powder includes the ingredient of following mass fraction：SiO210-30 parts,
Al2O310-30 parts, Fe2O31-5 parts, 3-15 parts of 25-50 parts of CaO, MgO；Preferably, the ultrafine slag powder includes following
The ingredient of mass fraction：SiO220.28 part, Al2O316.73 part, Fe2O32.49 parts, 7.01 parts of 39.17 parts of CaO, MgO.
As preferred embodiment, it is characterised in that the industrial residue includes steel factory waste residue；The steel plant give up
Slag is preferably Desulphurization.
The preparation system of above-mentioned ultrafine slag powder, including：
Drying unit, discharge port are connect with proportioner, for the blast furnace ferronickel slag and industrial residue to be carried out
Drying and processing；
Proportioner, feeding mouth are connect with the drying unit, and discharge port is connect with the grinding device, for that will dry
Blast furnace ferronickel slag after dry presses defined quality than mix with industrial residue, obtains mixed material；
Grinding device, feeding mouth are connect with the proportioner, and discharge port is connect with storage device, for by described in
Mixed material carries out grinding processing, obtains ultrafine slag powder；
Preferably, the system also includes storage device, the feeding mouth of the storage device goes out with the grinding device
Material mouth connects, for storing the ultrafine slag powder.
As preferred embodiment, the grinding device further comprises：
Rolling equipment, the feeding mouth of the rolling equipment are connect with the discharge port of the proportioner, the rolling equipment
For the mixed material to be carried out roller process, rough ground-slag is obtained；With
Ball-grinding machine, the feeding mouth of the ball-grinding machine are connect with the discharge port of the rolling equipment, the ball-grinding machine
For the mixing material coarse powder ball-milling treatment to be obtained ultrafine slag powder.
The preparation method of above-mentioned ultrafine slag powder, includes the following steps：
Mix step：By blast furnace ferronickel slag and industrial residue according to quality parts ratio (70-100)：(5-10), it is excellent
It is selected as 92：8 carry out mixed processing, obtain mixed material；
Grinding step：The mixed material is subjected to grinding processing, obtains the ultrafine slag powder.
As preferred embodiment, the method further includes：Baking step：Before mix step, by described in
It is 5%~7% that blast furnace ferronickel slag carries out drying and processing to water content with industrial residue.
As preferred embodiment, the grinding step includes：
Roll-in is step by step：The mixed material is subjected to roller process, obtains rough ground-slag；Ball milling is step by step：By described in
Rough ground-slag carries out ball-milling treatment, obtains ultrafine slag powder.
The application of above-mentioned ultrafine slag powder, including：The ultrafine slag powder is used to prepare concrete：The ultrafine slag
Powder accounts for the 30%-80% of both cement and the ultrafine slag powder gross mass in the concrete.
Compared with prior art, the present invention has the advantages that：
1st, the present invention by blast furnace ferronickel slag and industrial residue reasonable material, match, matched by way of optimization with parameter
It makes, the quality of obtained slag powders can be up to state standards S105 specified in GB/T18046-2008 grades, the slag
Powder fineness is small, large specific surface area, and activity is high, receives praises from customers.
2nd, the present invention utilizes blast furnace ferronickel slag to mix S105 grades of ultrafine slag powders of other industrial residues manufactures and is used for concrete,
The performance of the concrete is improved, improves concrete strength, improves the gain in strength phase of concrete, it is excellent to improve Building life cycle etc.
Point.
3rd, the present invention utilizes blast furnace ferronickel slag to mix S105 grades of ultrafine slag powders of other industrial residues manufactures and is used for concrete,
Substantial portion of cement can be substituted, reduces concrete production cost.
4th, the present invention utilizes blast furnace ferronickel slag to mix S105 grades of ultrafine slag powders of other industrial residues manufactures and is used for concrete,
It reduces cement consumption and is equal to reduction cement production capacity, reduce CO2Discharge reduces the resource consumptions such as lime stone, reduces coal electric energy and uses
Amount has higher social benefit.
5th, the present invention utilizes blast furnace ferronickel slag to mix S105 grades of ultrafine slag powders of other industrial residues manufactures and is used for concrete,
It is the preferable technological approaches of digestion process solid waste blast furnace ferronickel slag.
Description of the drawings
Fig. 1 is the schematic diagram of the system of the ultrafine slag powder of blast furnace ferronickel slag manufacture provided by the invention.
Wherein, the reference numerals are as follows shown in figure：
1st, dryer, 2, measurer, 3, grinding device, 31, roll squeezer, 32, ball mill, 4, storage device.
Specific embodiment
In a first aspect, the present invention provides a kind of ultrafine slag powder of blast furnace ferronickel slag manufacture.
The raw material for preparing the slag powders includes：Blast furnace ferronickel slag and industrial residue；Blast furnace ferronickel slag and industrial residue
Quality parts ratio be (70-100)：(5-10), preferably 92：8.
The blast furnace ferronickel slag is granulated water slay, and granularity is less than 5mm, moisture content 17%~20%；The industrial residue selects
From steel factory waste residue, such as：Desulphurization, granularity are less than 2mm, moisture content 18%~25%.
Above-mentioned ultrafine slag powder can be up to state standards S105 specified in GB/T18046-2008 grades.
The specific surface area of above-mentioned ultrafine slag powder is 500-550m2/ kg, preferably 520-550m2/kg。
The loss on ignition of above-mentioned ultrafine slag powder is less than or equal to 3%, preferably less than equal to 1%.
Above-mentioned ultrafine slag powder includes the ingredient of following quality parts ratio：
SiO210-30, Al2O310-30, Fe2O31-5, CaO 25-50, MgO 3-15；Preferably：SiO220.28,
Al2O316.73 Fe2O32.49, CaO 39.17, MgO 7.01.
45 μm of the particle of above-mentioned ultrafine slag powder, which tails over to reach 0.5%~0.7%, 7d activity indexs and reach, to be more than or equal to
105%, 28d activity index reach more than or equal to 125%；7d miberal powders compression strength is more than or equal to 45MPa, 28d miberal powder pressure resistances
Degree is more than or equal to 65MPa；7d strength of cement is more than or equal to 60MPa, and 28d miberal powders compression strength is more than or equal to 85MPa；Meet
S105 grades of indexs of slag powders national standard.
Illustratively, the dosage of above-mentioned blast furnace ferronickel slag can be 70 mass parts, 75 mass parts, 80 mass parts, 85 matter
Arbitrary value or arbitrary range therebetween in part, 90 mass parts, 95 mass parts, 100 mass parts are measured, the dosage of industrial residue can
Think arbitrary value in 5 mass parts, 6 mass parts, 7 mass parts, 8 mass parts, 9 mass parts, 10 mass parts or it is arbitrary therebetween
Range；In above-mentioned ultrafine slag powder, SiO2Can be 10 mass parts, 15 mass parts, 20 mass parts, 25 mass parts, 30 mass parts
Middle arbitrary value or arbitrary range therebetween, Al2O3Can be 10 mass parts, 15 mass parts, 20 mass parts, 25 mass parts, 30
Arbitrary value or arbitrary range therebetween in mass parts, CaO can be 20 mass parts, 25 mass parts, 30 mass parts, 40 mass
Arbitrary value or arbitrary range therebetween in part, 50 mass parts, MgO can be 3 mass parts, 5 mass parts, 10 mass parts, 12
Arbitrary value or arbitrary range therebetween in mass parts, 15 mass parts.
Second aspect, the present invention provides the preparation system of ultrafine slag powder described in first aspect, as shown in Figure 1, the system
Including sequentially connected drying unit, --- dryer 1, proportioner --- measurer 2, grinding device 3 (and including connecting successively
The rolling equipment connect --- roll squeezer 31 and ball mill 32), storage device 4.More than component is illustrated one by one below.
Drying unit 1, discharge port are connect with proportioner 2, for by above-mentioned blast furnace ferronickel slag and industrial residue into
Row drying and processing；
Proportioner 2, feeding mouth are connect with above-mentioned drying unit 1, and discharge port is connect with the grinding device, for inciting somebody to action
Blast furnace ferronickel slag after drying presses defined quality than mix with industrial residue, obtains mixed material；
Grinding device 3, feeding mouth are connect with the proportioner 2, and discharge port is connect with roll-in machine equipment 31, is used for
The mixed material is crushed into processing, discharge port is connect with ball-grinding machine 32, for comminuting matter to be ground, is obtained
To ultrafine slag powder.
The grinding device includes again：
Rolling equipment 31, specially roll squeezer for mixed material to be carried out roller process, obtain rough ground-slag；
Ball-grinding machine 32, specially ball mill are connect with the roll squeezer 31, for the rough ground-slag to be carried out ball-milling treatment
Obtain ultrafine slag powder.
Storage device 4, specially product storage cavern 4, connect with ball-grinding machine 32, are stored for product, entrucking manufacture sale.
The third aspect, the present invention provide the preparation method of ultrafine slag powder described in first aspect, include the following steps：
Step 1: drying：It is 5%~7% that blast furnace ferronickel slag and industrial residue are carried out drying and processing to water content.
Step 2: mix：Blast furnace ferronickel slag after drying and industrial residue are subjected to mixed processing, mixed
Material.
Step 3: it crushes：Said mixture material is crushed into processing, obtains slag powders；This step includes again：
Step by step one, roll-in：Said mixture material is subjected to roller process, obtains specific surface area as 80-120m2/ kg's
Rough ground-slag；
Step by step two, ball milling：Above-mentioned rough ground-slag is subjected to ball-milling treatment, obtains specific surface area as 500-550m2/ kg,
Preferably 520~550m2The ultrafine slag powder of/kg.
During above-mentioned roll-in and ball milling, any grinding aid is added without, is also added without any hydration reaction exciting agent.
Illustratively, the water content after above-mentioned drying and processing can be 5.0%, 5.5%, 6.0%, 6.5%, 7.0% in
Arbitrary value or arbitrary range therebetween；The specific surface area of above-mentioned rough ground-slag can be 80m2/kg、85m2/kg、90m2/
kg、95m2/kg、100m2/kg、110m2/kg、115m2/kg、120m2Arbitrary value or arbitrary range therebetween, above-mentioned in/kg
The specific surface area of ultrafine slag powder can be 500m2/kg、510m2/kg、520m2/kg、530m2/kg、540m2/kg、550m2/kg
Middle arbitrary value or arbitrary range therebetween；Above-mentioned ultrafine slag powder is transported to repository storage entrucking sale.
Fourth aspect, the present invention provide application of the ultrafine slag powder in concrete is prepared described in first aspect.
The mode of the application includes：Upper ultrafine slag powder is used to prepare concrete：The ultrafine slag powder accounts for the coagulation
In soil both cement and the ultrafine slag powder gross mass 30%-80% (such as：30%th, 40%, 50%, 60%, 70%,
Arbitrary value or arbitrary range therebetween in 80%).
Preferably, the preparation method of above-mentioned concrete includes：According to following quality parts ratio by cement, above-mentioned ultrafine slag
Powder, flyash, sand, stone, additive and water mixing, stirring to obtain concrete；Wherein, cement 80-280, ultrafine slag powder
120-320, flyash 50, sand 699, stone 1080, additive 11.3, water 160.
Illustratively, the dosage of above-mentioned cement can be 80 mass parts, 100 mass parts, 120 mass parts, 150 mass parts,
Arbitrary value or arbitrary model therebetween in 180 mass parts, 200 mass parts, 220 mass parts, 250 mass parts, 280 mass parts
Enclose, the dosage of ultrafine slag powder can be 120 mass parts, 150 mass parts, 180 mass parts, 200 mass parts, 220 mass parts,
Arbitrary value or arbitrary range therebetween in 250 mass parts, 280 mass parts, 300 mass parts, 320 mass parts.
In the prior art, the preparation method for preparing concrete includes：According to following quality parts ratio by cement, fine coal
Ash, sand, stone, additive and water mixing, stirring to obtain concrete；Wherein, cement 400, flyash 50, sand 699, stone
1080, additive 11.3, water 160.
It can be seen that ultrafine slag powder is used for concrete, cement consumption is reduced, not only reduces Cost of Concrete, and subtract
Few CO2 discharges, reduce the resource consumptions such as lime stone, reduce coal electric energy dosage, have higher social benefit；And have and carry
The advantages that high concrete intensity improves the gain in strength phase of concrete, raising Building life cycle.
With reference to specific embodiment, the present invention is further explained.It should be understood that these embodiments be only used for the present invention without
For limiting the scope of the invention.Externally it should be understood that after present disclosure has been read, those skilled in the art are to this hair
Bright to make various changes or modifications, these equivalent forms also fall within the scope of the appended claims of the present application.
Embodiment 1
The ultrafine slag powder of the present embodiment uses the preparation system of Fig. 1；Preparation method includes the following steps：
(1) it dries：It is 6.0% that blast furnace ferronickel slag and industrial residue are carried out drying and processing to water content.
(2) mix：According to quality parts ratio it is 92 by the blast furnace ferronickel slag after drying and industrial residue：8 carry out
Mixed processing obtains mixed material.
(3) roll-in：Said mixture material is subjected to roller process, obtains specific surface area as 80-120m2The rough ground-slags of/kg.
(4) ball milling：Above-mentioned rough ground-slag carries out ball-milling treatment, obtains ultrafine slag powder.
Above-mentioned ultrafine slag powder can be up to state standards S105 specified in GB/T18046-2008 grades.
It is measured according to the method for GB/T18046-2008, the performance of above-mentioned ultrafine slag powder is shown in the table 1 of detection example.
Concrete is prepared using the ultrafine slag powder of the present embodiment：In the concrete, the ultrafine slag powder account for cement and
The 37.5% of both ultrafine slag powders gross mass.The preparation method of the concrete includes：It will be following each according to following dosage
Raw material is mixed, and obtains concrete.
| Title material | Cement | Ultrafine slag powder | Flyash | Sand | Stone | Additive | Water |
| Dosage kg/m3Concrete | 250 | 150 | 50 | 699 | 1080 | 11.3 | 160 |
The present embodiment obtain concrete the advantages of be：1. cement proportion declines, cost reduction.2. concrete performance obtains
Improve, concrete strength obtains larger raising, and the concrete strength rise period improves 10 times or more, improves Building life cycle.
Embodiment 2
The ultrafine slag powder of the present embodiment uses the preparation system of Fig. 1；Preparation method includes the following steps：
(1) it dries：It is 5.0% that blast furnace ferronickel slag and industrial residue are carried out drying and processing to water content.
(2) mix：According to quality parts ratio it is 92 by the blast furnace ferronickel slag after drying and industrial residue：8 carry out
Mixed processing obtains mixed material.
(3) roll-in：Said mixture material is subjected to roller process, obtains specific surface area as 80-120m2The rough ground-slags of/kg.
(4) ball milling：Above-mentioned rough ground-slag carries out ball-milling treatment, obtains ultrafine slag powder.
Above-mentioned ultrafine slag powder can be up to state standards S105 specified in GB/T18046-2008 grades.
It is measured according to the method for GB/T18046-2008, the performance of above-mentioned ultrafine slag powder is shown in the table 1 of detection example.
Concrete is prepared using the ultrafine slag powder of the present embodiment：In the concrete, the ultrafine slag powder account for cement and
The 70% of both ultrafine slag powders gross mass.The preparation method of the concrete includes：According to following dosage by following each original
Material is mixed, and obtains concrete.
| Title material | Cement | Ultrafine slag powder | Flyash | Sand | Stone | Additive | Water |
| Dosage kg/m3Concrete | 120 | 280 | 50 | 699 | 1080 | 11.3 | 160 |
The concrete performance that the present embodiment obtains is improved, and intensity obtains larger raising, and the concrete strength rise period carries
High 10 times or more, improve Building life cycle.
Embodiment 3
The ultrafine slag powder of the present embodiment uses the preparation system of Fig. 1；Preparation method includes the following steps：
(1) it dries：It is 7.0% that blast furnace ferronickel slag and industrial residue are carried out drying and processing to water content.
(2) mix：According to quality parts ratio it is 100 by the blast furnace ferronickel slag after drying and industrial residue：5 carry out
Mixed processing obtains mixed material.
(3) roll-in：Said mixture material is subjected to roller process, obtains specific surface area as 80-120m2The rough ground-slags of/kg.
(4) ball milling：Above-mentioned rough ground-slag carries out ball-milling treatment, obtains ultrafine slag powder.
Above-mentioned ultrafine slag powder can be up to state standards S105 specified in GB/T18046-2008 grades.
It is measured according to the method for GB/T18046-2008, the performance of above-mentioned ultrafine slag powder is shown in the table 1 of detection example.
Concrete is prepared using the ultrafine slag powder of the present embodiment：In the concrete, the ultrafine slag powder account for cement and
The 50% of both ultrafine slag powders gross mass.The preparation method of the concrete includes：According to following dosage by following each original
Material is mixed, and obtains concrete.
| Title material | Cement | Ultrafine slag powder | Flyash | Sand | Stone | Additive | Water |
| Dosage kg/m3Concrete | 200 | 200 | 50 | 699 | 1080 | 11.3 | 160 |
The concrete performance that the present embodiment obtains is improved, and concrete strength obtains larger raising, and concrete strength increases
It is long-term to improve 10 times or more, improve Building life cycle.
Embodiment 4
The ultrafine slag powder of the present embodiment uses the preparation system of Fig. 1；Preparation method includes the following steps：
(1) it dries：It is 5.0% that blast furnace ferronickel slag and industrial residue are carried out drying and processing to water content.
(2) mix：According to quality parts ratio it is 90 by the blast furnace ferronickel slag after drying and industrial residue：10 carry out
Mixed processing obtains mixed material.
(3) roll-in：Said mixture material is subjected to roller process, obtains specific surface area as 80-120m2The rough ground-slags of/kg.
(4) ball milling：Above-mentioned rough ground-slag carries out ball-milling treatment, obtains ultrafine slag powder.
Above-mentioned ultrafine slag powder can be up to state standards S105 specified in GB/T18046-2008 grades.
It is measured according to the method for GB/T18046-2008, the performance of above-mentioned ultrafine slag powder is shown in the table 1 of detection example.
Concrete is prepared using the ultrafine slag powder of the present embodiment：In the concrete, the ultrafine slag powder account for cement and
The 40% of both ultrafine slag powders gross mass.The preparation method of the concrete includes：According to following dosage by following each original
Material is mixed, and obtains concrete.
| Title material | Cement | Ultrafine slag powder | Flyash | Sand | Stone | Additive | Water |
| Dosage kg/m3Concrete | 240 | 160 | 50 | 699 | 1080 | 11.3 | 160 |
The concrete performance that the present embodiment obtains is improved, and concrete strength obtains larger raising, and concrete strength increases
It is long-term to improve 10 times or more, improve Building life cycle.
Embodiment 5
The ultrafine slag powder of the present embodiment uses the preparation system of Fig. 1；Preparation method includes the following steps：
(1) it dries：It is 5.5% that blast furnace ferronickel slag and industrial residue are carried out drying and processing to water content.
(2) mix：According to quality parts ratio it is 90 by the blast furnace ferronickel slag after drying and industrial residue：10 carry out
Mixed processing obtains mixed material.
(3) roll-in：Said mixture material is subjected to roller process, obtains specific surface area as 80-120m2The rough ground-slags of/kg.
(4) ball milling：Above-mentioned rough ground-slag carries out ball-milling treatment, obtains ultrafine slag powder.
Above-mentioned ultrafine slag powder can be up to state standards S105 specified in GB/T18046-2008 grades.
It is measured according to the method for GB/T18046-2008, the performance of above-mentioned ultrafine slag powder is shown in the table 1 of detection example.
Concrete is prepared using the ultrafine slag powder of the present embodiment：In the concrete, the ultrafine slag powder account for cement and
The 30% of both ultrafine slag powders gross mass.The preparation method of the concrete includes：According to following dosage by following each original
Material is mixed, and obtains concrete.
| Title material | Cement | Ultrafine slag powder | Flyash | Sand | Stone | Additive | Water |
| Dosage kg/m3Concrete | 280 | 120 | 50 | 699 | 1080 | 11.3 | 160 |
The concrete performance that the present embodiment obtains is improved, and concrete strength obtains larger raising, and concrete strength increases
It is long-term to improve 10 times or more, improve Building life cycle.
Embodiment 6
The ultrafine slag powder of the present embodiment uses the preparation system of Fig. 1；Preparation method includes the following steps：
(1) it dries：It is 6.5% that blast furnace ferronickel slag and industrial residue are carried out drying and processing to water content.
(2) mix：According to quality parts ratio it is 80 by the blast furnace ferronickel slag after drying and industrial residue：6 carry out
Mixed processing obtains mixed material.
(3) roll-in：Said mixture material is subjected to roller process, obtains specific surface area as 80-120m2The rough ground-slags of/kg.
(4) ball milling：Above-mentioned rough ground-slag carries out ball-milling treatment, obtains ultrafine slag powder.
Above-mentioned ultrafine slag powder can be up to state standards S105 specified in GB/T18046-2008 grades.
It is measured according to the method for GB/T18046-2008, the performance of above-mentioned ultrafine slag powder is shown in the table 1 of detection example.
Concrete is prepared using the ultrafine slag powder of the present embodiment：In the concrete, the ultrafine slag powder account for cement and
The 60% of both ultrafine slag powders gross mass.The preparation method of the concrete includes：According to following dosage by following each original
Material is mixed, and obtains concrete.
| Title material | Cement | Ultrafine slag powder | Flyash | Sand | Stone | Additive | Water |
| Dosage kg/m3Concrete | 160 | 240 | 50 | 699 | 1080 | 11.3 | 160 |
The concrete performance that the present embodiment obtains is improved, and concrete strength obtains larger raising, and concrete strength increases
It is long-term to improve 10 times or more, improve Building life cycle.
Comparative example 1
The ultrafine slag powder of the present embodiment uses the preparation system of Fig. 1；Preparation method includes the following steps：
(1) it dries：It is 6.5% that blast furnace ferronickel slag is carried out drying and processing to water content.
(2) roll-in：Blast furnace ferronickel slag after drying is subjected to roller process, obtains specific surface area as 80-120m2/kg
Rough ground-slag.
(4) ball milling：Above-mentioned rough ground-slag carries out ball-milling treatment, obtains ultrafine slag powder.
In the ball-milling treatment, appropriate grinding aid is added in rough ground-slag.
It is measured according to the method for GB/T18046-2008, the performance such as table 1 of above-mentioned ultrafine slag powder.
It can be seen that the performance for the ultrafine slag powder that this comparative example obtains is less than the slag powders of embodiment 1-6.
Table 1：The performance for the ultrafine slag powder that embodiment 1-6 is prepared.
Claims (10)
1. a kind of ultrafine slag powder of blast furnace ferronickel slag manufacture, it is characterised in that：
The raw material for preparing the ultrafine slag powder includes：Blast furnace ferronickel slag and industrial residue；The blast furnace josephinite slag amount
Number is 90-95 parts, the mass fraction of the industrial residue is 5-10 parts；
Preferably, the blast furnace josephinite slag mass fraction is 92 parts, the mass fraction of the industrial residue is 8 parts.
2. ultrafine slag powder according to claim 1, it is characterised in that：
The specific surface area of the ultrafine slag powder is 500-550m2/ kg, preferably 520-530m2/kg。
3. ultrafine slag powder according to claim 1 or claim 2, it is characterised in that：
The ultrafine slag powder includes the ingredient of following mass fraction：
SiO210-30 parts, Al2O310-30 parts, Fe2O31-5 parts, 3-15 parts of 25-50 parts of CaO, MgO；
Preferably, the ultrafine slag powder includes the ingredient of following mass fraction：
SiO220.28 part, Al2O316.73 part, Fe2O32.49 parts, 7.01 parts of 39.17 parts of CaO, MgO.
4. according to any one of the claim 1-3 ultrafine slag powders, it is characterised in that the industrial residue includes steel plant
Waste residue；The steel factory waste residue is preferably Desulphurization.
5. the preparation system of ultrafine slag powder according to claim 1, it is characterised in that：
The system comprises：
Drying unit, discharge port are connect with proportioner, for the blast furnace ferronickel slag to be dried with industrial residue
Processing；
Proportioner, feeding mouth are connect with the drying unit, and discharge port is connect with the grinding device, for it will dry after
Blast furnace ferronickel slag and industrial residue by defined quality than mix, obtain mixed material；
Grinding device, feeding mouth are connect with the proportioner, and discharge port is connect with storage device, for by the mixing
Material carries out grinding processing, obtains ultrafine slag powder；
Preferably, the system also includes storage device, the discharge ports of the feeding mouth of the storage device and the grinding device
Connection, for storing the ultrafine slag powder.
6. the preparation system of ultrafine slag powder according to claim 5, it is characterised in that：
The grinding device further comprises：
Rolling equipment, the feeding mouth of the rolling equipment are connect with the discharge port of the proportioner, and the rolling equipment is used for
The mixed material is subjected to roller process, obtains rough ground-slag；With
Ball-grinding machine, the feeding mouth of the ball-grinding machine are connect with the discharge port of the rolling equipment, and the ball-grinding machine is used for
The mixing material coarse powder ball-milling treatment is obtained into ultrafine slag powder.
7. the preparation method of ultrafine slag powder according to claim 1, it is characterised in that：
It the described method comprises the following steps：
Mix step：By blast furnace ferronickel slag and industrial residue according to quality parts ratio (70-100)：(5-10), preferably
92：8 carry out mixed processing, obtain mixed material；
Grinding step：The mixed material is subjected to grinding processing, obtains the ultrafine slag powder.
8. the preparation method of ultrafine slag powder according to claim 7, it is characterised in that：
The method further includes：
Baking step：Before mix step, the blast furnace ferronickel slag and industrial residue are subjected to drying and processing to containing
Water is 5%~7%.
9. according to the preparation method of the ultrafine slag powder of claim 7 or 8, it is characterised in that：
The grinding step includes：
Roll-in is step by step：The mixed material is subjected to roller process, obtains rough ground-slag；
Ball milling is step by step：The rough ground-slag is subjected to ball-milling treatment, obtains ultrafine slag powder.
10. according to the application of any one of the claim 1-9 ultrafine slag powders, it is characterised in that：By the ultrafine slag
Powder is used to prepare concrete：The ultrafine slag powder accounts for both cement and the ultrafine slag powder gross mass in the concrete
30%-80%.
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