CN108424015A - The method for preparing iron aluminium system high active material using converter slag waste heat collaboration solid waste - Google Patents
The method for preparing iron aluminium system high active material using converter slag waste heat collaboration solid waste Download PDFInfo
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- CN108424015A CN108424015A CN201810203985.6A CN201810203985A CN108424015A CN 108424015 A CN108424015 A CN 108424015A CN 201810203985 A CN201810203985 A CN 201810203985A CN 108424015 A CN108424015 A CN 108424015A
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- Prior art keywords
- slag
- active material
- aluminium system
- high active
- gangue
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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
- C04B7/32—Aluminous cements
-
- 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
-
- 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
- C04B7/24—Cements from oil shales, residues or waste other than slag
-
- 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)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Manufacture And Refinement Of Metals (AREA)
- Soil Conditioners And Soil-Stabilizing Materials (AREA)
Abstract
The invention discloses the methods for preparing iron aluminium system high active material using converter slag waste heat collaboration solid waste, including steps are as follows：1) by red mud, gangue and the drying of correction material, grinding；2) red mud of setting ratio, gangue and correction material are mixed, and is uniformly mixed compound particles with molten state slag before slag is come out of the stove, obtained mixture, so that CaO mass in mixture is accounted for 35 49%, SiO210 25% are accounted for, Fe2O315 30% are accounted for, Al2O3Account for 10 25%, and it be 23, Al/Fe is 2.5 3 that basicity factor Cm, which is 0.9 1.1, Si/Al,；3) the mixture high-temperature calcination setting time that will be obtained in step 2)；4) the clinker grinding after calcining step 3) is to get iron aluminium system high active material.Different Industrial Solid Wastes are mixed with molten steel slag, so that different Industrial Solid Wastes is chemically reacted at high temperature using the waste heat of molten steel slag, generate sulphur aluminium system high active material, low energy consumption by preparation process, excellent product performance, largely digests solid waste, environmentally protective.
Description
Technical field
The present invention relates to Industrial Solid Waste recycling and civil engineering material preparation fields, specially utilize converter slag
Waste heat, multiple types solid waste coordinate system for iron aluminium system high active material method.
Background technology
Waste residue when slag is as steel-making, the generally 15-20% of crude steel yield.In recent years, with China's steel and iron industry
Fast development, the accumulating amount of slag increases year by year, and the slag of accumulation does not only take up a large amount of soils, also results in serious environment
Pollution.The mineral composition of converter slag is mainly tricalcium silicate, dicalcium silicate, calcium ferrite, iron oxide etc., thus slag as
Cement mixture etc. has good Exploitative potential.But slag there are gelation activities low, coarse grains, compact structure
The problems such as, seriously constrain utilization rate of the slag as cementitious material.In addition, temperature is up to 1600 DEG C in converter slag technique,
Scattering and disappearing for amount of heat is also a kind of wasting of resources.
Red mud, gangue etc. are the waste residues of current metallurgy industry bulk deposition, and waste residue stockpiling occupies a large amount of soils, over the ground
Lower water, soil cause seriously to pollute.Therefore, realize waste residue by all kinds of means, large-scale recycling it is extremely urgent.
Correlation scholar is carried out in terms of being prepared ferrous aluminate cement material using steel slag waste heat and using solid waste both at home and abroad
Part research work.But solid waste is calcined using steel slag waste heat, there is no patent report in terms of preparing ferrous aluminate cement class material.Specially
101555531 A, CN 104673965 of sharp CN is disclosed in A and 102796833 A of CN to be weighed online using converter slag waste heat
The technique of structure slag is and the gelation activity that auxiliary adjustment material improves slag to be added by steel slag waste heat, but this method is only
The activity for improving slag, does not form final products；
102515590 A of patent CN disclose a kind of technique of producing sulphoaluminate cement by proportioning for direct slurry of red mud, lead to
The utilization of the solid wastes cooperative compensating such as red mud and desulfurated plaster is crossed, high performance sulphate aluminium cement is prepared for；Patent CN
101439938 A disclose a kind of method preparing ferrous aluminate cement using red mud；Patent CN1432544 A disclose one kind
High-quality gypsum, that is, iron powder, the method for preparing ferrous aluminate cement are replaced using desulfurated plaster, mine tailing, but above-mentioned three patents are equal
Rotary kiln need to be used to carry out high-temperature calcination, waste mass energy, manufacturing cost is high.
Invention content
Technical problem present in for the above-mentioned prior art, more than a kind of utilization converter slag
The method that heat collaboration solid waste prepares iron aluminium system high active material.Different Industrial Solid Wastes are mixed with molten steel slag, utilize molten steel
The waste heat of slag makes different Industrial Solid Wastes chemically react at high temperature, generates iron aluminium system high active material, preparation process energy consumption
Low, excellent product performance largely digests solid waste, environmentally protective.
In order to solve problem above, the technical scheme is that：
A method of iron aluminium system high active material being prepared using converter slag waste heat collaboration solid waste, including steps are as follows：
1) by red mud, gangue and the drying of correction material, grinding；
2) by the red mud of setting ratio, gangue and correction material mix, and before slag is come out of the stove by compound particles with
Molten state slag is uniformly mixed, and obtains mixture, CaO mass in mixture is made to account for 35-49%, SiO2Account for 10-25%, Fe2O3It accounts for
15-30%, Al2O310-25% is accounted for, and basicity factor Cm is 0.9-1.1, Si/Al 2-3, Al/Fe 2.5-3；
3) the mixture high-temperature calcination setting time that will be obtained in step 2)；
4) the clinker grinding after calcining step 3) is to get iron aluminium system high active material.
This method carries out high-temperature calcination using the molten state slag that do not come out of the stove as raw material, using the waste heat in molten state slag,
And temperature is maintained using the waste heat in process for making, the energy consumption in iron aluminium system high active material preparation process is greatly saved.
Preferably, in step 1), the moisture content after red mud, gangue and correction material drying is less than 1%, mistake after grinding
100 mesh sieve.
Preferably, in step 1), the red mud produces red mud by Bayer legal system aluminium industry.
It is preferably, described to correct the basicity factor that material is adjusting material system, Si/Al values, Al/Fe values in step 1),
Selected solid waste is one or both of carbide slag, flyash, iron tailings.
It is further preferred that the content of calcium oxide is 70% or more in the carbide slag.
Preferably, in step 2), before being mixed with slag, temperature decrease after preventing molten steel slag from being mixed with solid waste will mix
Composition granule is preheated to 200-300 DEG C.
Preferably, in step 2), red mud, gangue, correction material and the mass ratio of slag are：110-170：40-90：5-
15：100.
It is further preferred that in step 2), red mud, gangue, correction material and slag mass ratio be：120-160：
40-70：5-10：100.
Preferably, in step 3), the temperature of calcining is 1250-1400 DEG C, and the time of calcining is 40-60min, calcination process
In by steel-making waste heat additional heat.
Preferably, in step 4), it is 360-400m that chamotte powder, which is milled to specific surface area,2/kg。
The iron aluminium system high active material that the above method is prepared.
Iron aluminium system's high active material answering in preparing injecting paste material, roadbed material, extra large work material, filler
With.
Beneficial effects of the present invention are：
Products obtained therefrom of the present invention belongs to the high portland cement class material of ferrous aluminate phase content, and the raw material of the technology is applicable in
Range is wide, and the various higher waste resources of iron content are possible to large scale use, is the ideal realized solid wastes recycling and utilized
Approach.Also, early stage and the later stage excellent in mechanical performance of product of the present invention, wearability is good, and durability is high, and this product has both iron aluminium
The characteristics of acid salt cement and portland cement.
Advantage of the invention is that full utilization Industrial Solid Waste is as primary raw material, at low cost, low energy consumption, and properties of product are excellent
It is good, there is significant economic benefit and environmental benefit.Primary raw material slag, red mud and gangue used in the present invention and school
Positive raw material carbide slag, flyash are the waste resource of enormous amount, therefore low raw-material cost.This technology utilizes converter slag
A large amount of waste heat carries out high-temperature calcination in technique, and maintains temperature with the waste heat in process for making, than other method for calcinating systems
Standby cement class material economy energy consumption.
The present invention can be slag all of and cooperateing with and utilize red mud, gangue, carbide slag, flyash, iron tailings etc.
A variety of solid wastes, this product belong to the high portland cement of ferrous aluminate phase content, with early strong, high-strength, corrosion-resistant, grindability is high
Equal excellent performances.
Specific implementation mode
It is noted that following detailed description is all illustrative, it is intended to provide further instruction to the application.Unless another
It indicates, all technical and scientific terms used herein has usual with the application person of an ordinary skill in the technical field
The identical meanings of understanding.
It should be noted that term used herein above is merely to describe specific implementation mode, and be not intended to restricted root
According to the illustrative embodiments of the application.As used herein, unless the context clearly indicates otherwise, otherwise singulative
It is also intended to include plural form, additionally, it should be understood that, when in the present specification using term "comprising" and/or " packet
Include " when, indicate existing characteristics, step, operation, device, component and/or combination thereof.
Embodiment 1
A kind of iron aluminium system high active material, including (slag is 100 parts by each converter amount to following each constituent mass number
Meter)：
120 parts of red mud；40 parts of gangue；5 parts of carbide slag；
According to the preparation method of iron aluminium provided by the invention system high active material, preparation process is as follows：
(1) red mud, gangue, carbide slag are dried to moisture content and are less than 1%, grinding sieves with 100 mesh sieve；
(2) 120 parts of red mud, 40 parts of gangue, 5 parts of carbide slag are weighed；
(3) raw material is mixed, is sufficiently mixed with slag before slag is come out of the stove, mixture is placed in rotary kiln and calcines 60 points
Clock, temperature maintain 1250-1400 DEG C；
(4) grinding to specific surface area is 360-400m to calcination of chamotte again2/ kg obtains iron aluminium system high active material.
The iron aluminium system high active material of preparation, is tested through cement standard cement mortar strength, and 3 days and 28 days compression strength are respectively
30.4MPa and 62MPa.
Embodiment 2
A kind of iron aluminium system high active material, including (slag is 100 parts by each converter amount to following each constituent mass number
Meter)：
160 parts of red mud；70 parts of gangue；10 parts of flyash；
Above-mentioned iron aluminium system high active material is prepared according to provided by the invention, preparation process is as follows：
(1) red mud, gangue are dried to moisture content and are less than 1%, grinding sieves with 100 mesh sieve；
(2) 160 parts of red mud, 70 parts of gangue, 10 parts of flyash are weighed；
(3) raw material is mixed, is sufficiently mixed with slag before slag is come out of the stove, mixture is placed in rotary kiln and calcines 50 points
Clock, temperature maintain 1250-1400 DEG C；
(4) grinding to specific surface area is 360-400m to calcination of chamotte again2/ kg obtains iron aluminium system high active material.
The iron aluminium system high active material of preparation, is tested through cement standard cement mortar strength, and 3 days and 28 days compression strength are respectively
27.8MPa and 64MPa.
Embodiment 3
A kind of iron aluminium system high active material, including (slag is 100 parts by each converter amount to following each constituent mass number
Meter)：
150 parts of red mud；60 parts of gangue；18 parts of iron tailings；
According to the preparation method of iron aluminium provided by the invention system high active material, preparation process is as follows：
(1) red mud, gangue, iron tailings are dried to moisture content and are less than 1%, grinding sieves with 100 mesh sieve；
(2) 160 parts of red mud, 60 parts of gangue, 18 parts of iron tailings are weighed；
(3) raw material is mixed, is sufficiently mixed with slag before slag is come out of the stove, mixture is placed in rotary kiln and calcines 50 points
Clock, temperature maintain 1250-1400 DEG C；
(4) grinding to specific surface area is 360-400m to calcination of chamotte again2/ kg obtains iron aluminium system high active material.
The iron aluminium system high active material of preparation, is tested through cement standard cement mortar strength, and 3 days and 28 days compression strength are respectively
33.4MPa and 65MPa.
The foregoing is merely the preferred embodiments of the application, are not intended to limit this application, for the skill of this field
For art personnel, the application can have various modifications and variations.Within the spirit and principles of this application, any made by repair
Change, equivalent replacement, improvement etc., should be included within the protection domain of the application.
Claims (10)
1. a kind of method preparing iron aluminium system high active material using converter slag waste heat collaboration solid waste, it is characterised in that：Including
Steps are as follows：
1) by red mud, gangue and the drying of correction material, grinding；
2) by the red mud of setting ratio, gangue and correction material mix, be granulated, and before slag is come out of the stove by compound particles with
Molten state slag is uniformly mixed, and obtains mixture, CaO mass in mixture is made to account for 35-49%, SiO2Account for 10-25%, Fe2O3It accounts for
15-30%, Al2O310-25% is accounted for, and basicity factor Cm is 0.9-1.1, Si/Al 2-3, Al/Fe 2.5-3；
3) the mixture high-temperature calcination setting time that will be obtained in step 2)；
4) the clinker grinding after calcining step 3) is to get iron aluminium system high active material.
2. according to the method described in claim 1, it is characterized in that：In step 1), after red mud, gangue and correction material drying
Moisture content be less than 1%, sieve with 100 mesh sieve after grinding.
3. according to the method described in claim 1, it is characterized in that：In step 1), the correction material is carbide slag, flyash
One or both of.
4. according to the method described in claim 3, it is characterized in that：The content of calcium oxide is 70% or more in the carbide slag.
5. according to the method described in claim 1, it is characterized in that：It is before being mixed with slag, compound particles are pre- in step 2)
Heat is to 200-300 DEG C.
6. according to the method described in claim 1, it is characterized in that：In step 2), red mud, gangue, correction material and slag
Mass ratio be：110-170：40-90：5-15：100；
Preferably, the mass ratio of red mud, gangue, correction material and slag is：120-160：40-70：5-10：100.
7. according to the method described in claim 1, it is characterized in that：In step 3), the temperature of calcining is 1250-1400 DEG C, is forged
The time of burning is 40-60min, by steel-making waste heat additional heat in calcination process.
8. according to the method described in claim 1, it is characterized in that：In step 4), it is 360- that chamotte powder, which is milled to specific surface area,
400m2/kg。
9. the iron aluminium system high active material that any the methods of claim 1-8 are prepared.
10. iron aluminium system's high active material described in claim 9 is preparing injecting paste material, roadbed material, extra large work material, filler
In application.
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109970378A (en) * | 2019-04-16 | 2019-07-05 | 山东大学 | Based on Synergy and carbonization/high-temperature technology solid waste based cementitious material preparation process |
| CN110078451A (en) * | 2019-03-29 | 2019-08-02 | 山东大学 | A kind of solid waste base pervious concrete with water purification function |
| CN111517819A (en) * | 2020-04-03 | 2020-08-11 | 唐山庄信科技有限公司 | Method for preparing foamed ceramic by utilizing metallurgical high-temperature fluid steel slag |
| CN111704419A (en) * | 2020-05-28 | 2020-09-25 | 山东大学 | High-corrosion-resistance marine cementing material and preparation method and application thereof |
| CN111850215A (en) * | 2020-05-29 | 2020-10-30 | 广西义强达投资有限公司 | Method for producing pig iron and novel building aggregate by treating alumina red mud with electric furnace method |
| CN111848060A (en) * | 2020-05-25 | 2020-10-30 | 山东高速集团有限公司 | Solid waste-based marine existing structure repair material and preparation method and application thereof |
| CN112723761A (en) * | 2021-01-28 | 2021-04-30 | 天津水泥工业设计研究院有限公司 | Full-solid waste modifier for reduction and reconstruction of molten steel slag, modification process and product |
| CN112939489A (en) * | 2021-01-28 | 2021-06-11 | 天津水泥工业设计研究院有限公司 | Method for on-line adjusting slagging alkalinity of smelting reduction furnace by utilizing red mud |
| CN113698115A (en) * | 2021-10-20 | 2021-11-26 | 盐城工学院 | Active auxiliary cementing material and method for on-line tempering of steel slag |
| CN113929324A (en) * | 2021-10-28 | 2022-01-14 | 中国建筑材料科学研究总院有限公司 | High-iron high-silicon sulphoaluminate cement clinker prepared from molten steel slag and preparation method thereof |
| CN114455929A (en) * | 2021-05-08 | 2022-05-10 | 南京国恩充填科技有限公司 | Inorganic water-fixing material for mine filling and preparation method thereof |
| CN114477382A (en) * | 2022-01-13 | 2022-05-13 | 安庆师范大学 | Preparation method and application of composite adsorption-catalysis material |
| CN114907029A (en) * | 2022-05-31 | 2022-08-16 | 武汉理工大学 | Method for preparing ecological auxiliary cementing material by utilizing high-iron granular slag sintering solid waste |
| CN116396060A (en) * | 2022-12-30 | 2023-07-07 | 姚胜南 | Steel slag ceramic material and preparation method thereof |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110078451A (en) * | 2019-03-29 | 2019-08-02 | 山东大学 | A kind of solid waste base pervious concrete with water purification function |
| CN109970378A (en) * | 2019-04-16 | 2019-07-05 | 山东大学 | Based on Synergy and carbonization/high-temperature technology solid waste based cementitious material preparation process |
| CN111517819A (en) * | 2020-04-03 | 2020-08-11 | 唐山庄信科技有限公司 | Method for preparing foamed ceramic by utilizing metallurgical high-temperature fluid steel slag |
| CN111848060A (en) * | 2020-05-25 | 2020-10-30 | 山东高速集团有限公司 | Solid waste-based marine existing structure repair material and preparation method and application thereof |
| CN111704419A (en) * | 2020-05-28 | 2020-09-25 | 山东大学 | High-corrosion-resistance marine cementing material and preparation method and application thereof |
| CN111850215A (en) * | 2020-05-29 | 2020-10-30 | 广西义强达投资有限公司 | Method for producing pig iron and novel building aggregate by treating alumina red mud with electric furnace method |
| CN112723761A (en) * | 2021-01-28 | 2021-04-30 | 天津水泥工业设计研究院有限公司 | Full-solid waste modifier for reduction and reconstruction of molten steel slag, modification process and product |
| CN112939489A (en) * | 2021-01-28 | 2021-06-11 | 天津水泥工业设计研究院有限公司 | Method for on-line adjusting slagging alkalinity of smelting reduction furnace by utilizing red mud |
| CN114455929A (en) * | 2021-05-08 | 2022-05-10 | 南京国恩充填科技有限公司 | Inorganic water-fixing material for mine filling and preparation method thereof |
| CN113698115A (en) * | 2021-10-20 | 2021-11-26 | 盐城工学院 | Active auxiliary cementing material and method for on-line tempering of steel slag |
| CN113929324A (en) * | 2021-10-28 | 2022-01-14 | 中国建筑材料科学研究总院有限公司 | High-iron high-silicon sulphoaluminate cement clinker prepared from molten steel slag and preparation method thereof |
| CN114477382A (en) * | 2022-01-13 | 2022-05-13 | 安庆师范大学 | Preparation method and application of composite adsorption-catalysis material |
| CN114907029A (en) * | 2022-05-31 | 2022-08-16 | 武汉理工大学 | Method for preparing ecological auxiliary cementing material by utilizing high-iron granular slag sintering solid waste |
| CN116396060A (en) * | 2022-12-30 | 2023-07-07 | 姚胜南 | Steel slag ceramic material and preparation method thereof |
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