CN104276840B - A kind of blast furnace dedusting ash basal granule sub-electrode and preparation method thereof - Google Patents
A kind of blast furnace dedusting ash basal granule sub-electrode and preparation method thereof Download PDFInfo
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- CN104276840B CN104276840B CN201310275571.1A CN201310275571A CN104276840B CN 104276840 B CN104276840 B CN 104276840B CN 201310275571 A CN201310275571 A CN 201310275571A CN 104276840 B CN104276840 B CN 104276840B
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- blast furnace
- dedusting ash
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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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- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/60—Production of ceramic materials or ceramic elements, e.g. substitution of clay or shale by alternative raw materials, e.g. ashes
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Abstract
A kind of blast furnace dedusting ash basal granule sub-electrode and preparation method thereof belongs to technical field of waste water processing.The present invention with the blast furnace dedusting ash after ball milling drying treatment, shale, pore former, activator for raw material, in certainweight ratio mixing and stirring, be squeezed into raw material ball, carry out drying treatment, be placed in heating under specified temp, activation, roasting, take out after for some time, be cooled to room temperature and obtain finished product.Blast furnace dedusting ash basal granule sub-electrode porous prepared by the present invention, specific surface area is large, and having good absorption property, is a kind of new and effective granule electrode.A kind of blast furnace dedusting ash basal granule sub-electrode provided by the invention and preparation method thereof, makes full use of trade waste---blast furnace dedusting ash, and both can turn waste into wealth, and the pollution of environment can be reduced again, solve the problems such as land seizure.
Description
Technical field
The invention belongs to technical field of waste water processing, particularly a kind of a kind of blast furnace dedusting ash basal granule sub-electrode for the treatment of hardly degraded organic substance in municipal effluent and preparation method thereof.
Background technology
Blast furnace dedusting ash is the solid waste that the flue gas of blast furnace discharge is collected through dust removal installations such as sack cleaners, is a kind of iron slag having utility value.Current, the utilization of blast furnace dedusting ash is only limitted to magnetic separation and carries iron or carbon is carried in flotation, and utility value is not high.Along with the develop rapidly of China's Iron And Steel Industry, the blast furnace dedusting ash produced is proposed to the demand of new exploitation in steel manufacture process, so become to the Collection and utilization of blast furnace dedusting ash the focus studied in the industry in recent years.
Three-diemsnional electrode is a kind of novel advanced oxidization method, the treatment effect of the performance remarkably influenced 3 D electrode reactor of granule electrode, conventional several granule electrodes comprise gac, the metal of metal oxide and load or metal oxide, but these granule electrodes there are the following problems: the impedance of activated carbon granule is relatively little, fill in when running in 3 D electrode reactor and easily form short-circuit current, thus reduction current efficiency, and activated carbon particles also there will be powder phenomenon-tion in electrolytic process; Metal oxide particle electrode has some poisonous Ion release in electrolytic process, can become secondary pollutant, such as PbO
2granule electrode; The metal of load or metal oxide overcome the shortcoming of activated carbon grain sub-electrode, improve water treatment effect, but also there is loaded metal and be easy to problems such as coming off.At present, for using three-dimensional electrodes system, in order to improve current efficiency, on the basis of understanding three-diemsnional electrode mechanism of catalytic reaction in depth, having good electroconductibility, adsorptivity and catalytic performance granule electrode under designing and be prepared in normal temperature and pressure conditions is modern key issue urgently to be resolved hurrily.
Summary of the invention
The object of the invention is to overcome appeal granule electrode filler Problems existing, a kind of preparation method of blast furnace dedusting ash basal granule sub-electrode is provided.Granule electrode material provided by the present invention, can organism effectively in degrading waste water as the working electrode of 3 D electrode reactor, and current efficiency is high, and energy consumption is low.
A kind of blast furnace dedusting ash basal granule sub-electrode, according to weight percent meter, dry thin blast furnace dedusting ash particle accounts for 50-60%, dry carefully shale accounts for 10-20%, pore former accounts for 10-20%, activator accounts for 10-20%.
Described pore former can be the one in powdered carbon, saw dust, starch, polyvinyl alcohol (PVA), polyvinyl butyral acetal (PVB), granules of polystyrene.
Described activator can be Fe
3o
4, Fe
2o
3,mnO
2, one in ZnO.
Described blast furnace dedusting ash is the solid waste that the flue gas of blast furnace discharge is collected through dust removal installations such as sack cleaners, is a kind of iron slag having utility value.
The preparation method of above-mentioned blast furnace dedusting ash basal granule sub-electrode, comprises the steps:
A, blast furnace dedusting ash, through washing, immersion (washing, the object of soaking are desorption of impurities), are dried at 120 DEG C, are then crossed 60 mesh sieves, get the thin blast furnace dedusting ash of drying for subsequent use in baking oven;
B, shale are put in 120 DEG C of oven dry in baking oven, are pulverized by the shale of oven dry in mortar, then cross 60 mesh sieves, get dry thin shale for subsequent use;
C, by the thin shale of drying, pore former and the activator in thin for the drying in steps A blast furnace dedusting ash, step B according to certain weight percent, mix and stir, being squeezed into raw material ball;
D, by the raw material ball in step C in an oven 120 DEG C dry 24 hours;
E, by step D dry after raw material ball, be placed in High Temperature Furnaces Heating Apparatus and rise to 300 DEG C from room temperature with 120 DEG C/h, heating 2h, then 550 DEG C are risen to 60 DEG C/h, activation 10-30min, rise to 1050 DEG C of roasting 10-30min with 300 DEG C/h again, naturally cool to room temperature, obtain blast furnace dedusting ash basal granule sub-electrode material.
According to weight percent meter, dry thin blast furnace dedusting ash accounts for 50-60%, dry carefully shale accounts for 10-20%, pore former accounts for 10-20%, activator accounts for 10-20%.
Described pore former can be the one in powdered carbon, saw dust, starch, polyvinyl alcohol (PVA) particle.
Described activator can be Fe
3o
4, Fe
2o
3,mnO
2, one in ZnO.
The blast furnace dedusting ash basal granule sub-electrode prepared by above-mentioned preparation method, getting solid waste blast furnace dedusting ash is raw material.Containing multiple basic oxide (CaO, Al in blast furnace dedusting ash
2o
3deng), be made into after granule electrode with waste water after can stripping partial alkaline thing, after mixing with pore former, good chemical reaction can be produced, make particle surface form porous state, thus to the pollution substance in waste water, there is good absorption, removal effect.And the waste blast furnace dedusting ash produced in iron ore manUfaCtUre of pig iron process, its stacking not only needs fund and large-area storage yard, and contaminate environment.Utilize blast furnace dedusting ash to make the particle-catalytic electrode of three-diemsnional electrode, can turn waste into wealth, reduce the problem such as pollution, appropriation of land of environment.
Blast furnace dedusting ash basal granule sub-electrode provided by the invention and preparation method thereof, meets the environmental protection policy of current national energy-saving and emission-reduction.The granule electrode porous of preparation, specific surface area is large, and having very strong absorption property, conductivity, is a kind of new and effective granule electrode.
Below in conjunction with embodiment, the invention will be further described.
Embodiment
Embodiment one:
A, blast furnace dedusting ash, through washing, immersion (washing, the object of soaking are desorption of impurities), are dried at 120 DEG C, are then crossed 60 mesh sieves, get the thin blast furnace dedusting ash particle of drying for subsequent use in baking oven;
B, shale are put in 120 DEG C of oven dry in baking oven, are pulverized by the shale of oven dry in mortar, then cross 60 mesh sieves, get dry thin shale for subsequent use;
C, by the thin shale of drying, powdered carbon and the Fe in thin for the drying in steps A blast furnace dedusting ash particle, step B
3o
4according to the weight percent of 50%:20%:20%:10%, mix and stir, being squeezed into raw material ball;
D, by the raw material ball in step C in an oven 120 DEG C dry 24 hours;
E, by step D dry after raw material ball, be placed in High Temperature Furnaces Heating Apparatus and rise to 300 DEG C from room temperature with 120 DEG C/h, heating 2h, then rise to 550 DEG C with 60 DEG C/h, activation 20min, then rise to 1050 DEG C of roasting 30min with 300 DEG C/h, naturally cool to room temperature, obtain blast furnace dedusting ash basal granule sub-electrode material.
Get the blast furnace dedusting ash basal granule sub-electrode 5.0g prepared in above-described embodiment, be filled in reactor, obtained 3 D electrode reactor, is 6.0V at voltage, and when electric current is 0.2A, energising degraded 30ml dyeing waste water 45min, CODcr clearance reaches 95%.
Embodiment two:
A, blast furnace dedusting ash, through washing, immersion (washing, the object of soaking are desorption of impurities), are dried at 120 DEG C, are then crossed 60 mesh sieves, get the thin blast furnace dedusting ash particle of drying for subsequent use in baking oven;
B, shale are put in 120 DEG C of oven dry in baking oven, are pulverized by the shale of oven dry in mortar, then cross 60 mesh sieves, get dry thin shale for subsequent use;
C, by the thin shale of drying, saw dust and the Fe in thin for the drying in steps A blast furnace dedusting ash particle, step B
2o
3according to the weight percent of 55%:15%:15%:15%, mix and stir, being squeezed into raw material ball;
D, by the raw material ball in step C in an oven 120 DEG C dry 24 hours;
E, by step D dry after raw material ball, be placed in High Temperature Furnaces Heating Apparatus and rise to 300 DEG C from room temperature with 120 DEG C/h, heating 2h, then rise to 550 DEG C with 60 DEG C/h, activation 20min, then rise to 1050 DEG C of roasting 30min with 300 DEG C/h, naturally cool to room temperature, obtain blast furnace dedusting ash basal granule sub-electrode material.
Get the blast furnace dedusting ash basal granule sub-electrode 5.0g prepared in above-described embodiment, be filled in reactor, obtained 3 D electrode reactor, is 6.0V at voltage, and when electric current is 0.2A, energising degraded 30ml dyeing waste water 45min, CODcr clearance reaches 94%.
Embodiment three:
A, blast furnace dedusting ash, through washing, immersion (washing, the object of soaking are desorption of impurities), are dried at 120 DEG C, are then crossed 60 mesh sieves, get the thin blast furnace dedusting ash particle of drying for subsequent use in baking oven;
B, shale are put in 120 DEG C of oven dry in baking oven, are pulverized by the shale of oven dry in mortar, then cross 60 mesh sieves, get dry thin shale for subsequent use;
C, by the thin shale of drying, starch and the MnO in thin for the drying in steps A blast furnace dedusting ash particle, step B
2according to the weight percent of 60%:15%:15%:10%, mix and stir, being squeezed into raw material ball;
D, by the raw material ball in step C in an oven 120 DEG C dry 24 hours;
E, by step D dry after raw material ball, be placed in High Temperature Furnaces Heating Apparatus and rise to 300 DEG C from room temperature with 120 DEG C/h, heating 2h, then rise to 550 DEG C with 60 DEG C/h, activation 20min, then rise to 1050 DEG C of roasting 30min with 300 DEG C/h, naturally cool to room temperature, obtain blast furnace dedusting ash basal granule sub-electrode material.
Get the blast furnace dedusting ash basal granule sub-electrode 5.0g prepared in above-described embodiment, be filled in reactor, obtained 3 D electrode reactor, is 6.0V at voltage, and when electric current is 0.2A, energising degraded 30ml dyeing waste water 45min, CODcr clearance reaches 94%.
Embodiment four:
A, blast furnace dedusting ash, through washing, immersion (washing, the object of soaking are desorption of impurities), are dried at 120 DEG C, are then crossed 60 mesh sieves, get the thin blast furnace dedusting ash particle of drying for subsequent use in baking oven;
B, shale are put in 120 DEG C of oven dry in baking oven, are pulverized by the shale of oven dry in mortar, then cross 60 mesh sieves, get dry thin shale for subsequent use;
C, by the thin shale of drying, starch and the MnO in thin for the drying in steps A blast furnace dedusting ash particle, step B
2according to the weight percent of 60%:10%:10%:20%, mix and stir, being squeezed into raw material ball;
D, by the raw material ball in step C in an oven 120 DEG C dry 24 hours;
E, by step D dry after raw material ball, be placed in High Temperature Furnaces Heating Apparatus and rise to 300 DEG C from room temperature with 120 DEG C/h, heating 2h, then rise to 550 DEG C with 60 DEG C/h, activation 20min, then rise to 1050 DEG C of roasting 30min with 300 DEG C/h, naturally cool to room temperature, obtain blast furnace dedusting ash basal granule sub-electrode material.
Get the blast furnace dedusting ash basal granule sub-electrode 5.0g prepared in above-described embodiment, be filled in reactor, obtained 3 D electrode reactor, is 6.0V at voltage, and when electric current is 0.2A, energising degraded 30ml dyeing waste water 45min, CODcr clearance reaches 96%.
Claims (5)
1. a blast furnace dedusting ash basal granule sub-electrode
,it is characterized in that: according to weight percent meter, comprise dry thin blast furnace dedusting ash particle 50-60%, dry thin shale 10-20%, pore former 10-20%, activator 10-20%, wherein the preparation process of dry thin blast furnace dedusting ash particle is that blast furnace dedusting ash is through washing, immersion, dry at 120 DEG C in baking oven, then cross 60 mesh sieves, get dry thin blast furnace dedusting ash particle for subsequent use; The preparation process of dry thin shale is that shale is put in 120 DEG C of oven dry in baking oven, is pulverized by the shale of oven dry, then cross 60 mesh sieves in mortar, gets dry thin shale for subsequent use; Activator is Fe
3o
4, Fe
2o
3, MnO
2, one in ZnO.
2. blast furnace dedusting ash basal granule sub-electrode as claimed in claim 1, is characterized in that: pore former is the one in powdered carbon, saw dust, starch, polyvinyl alcohol (PVA) particle.
3. a preparation method for blast furnace dedusting ash basal granule sub-electrode, is characterized in that, comprises the following steps:
A, blast furnace dedusting ash, through washing, immersion, are dried at 120 DEG C in baking oven, then cross 60 mesh sieves, get dry thin blast furnace dedusting ash;
B, shale are put in 120 DEG C of oven dry in baking oven, are pulverized by the shale of oven dry in mortar, then cross 60 mesh sieves, get dry thin shale;
C, by the thin shale of drying, pore former and the activator in thin for the drying in steps A blast furnace dedusting ash, step B according to certain weight percent, comprise dry blast furnace dedusting ash particle 50-60%, dry shale 10-20%, pore former 10-20%, activator 10-20%, wherein activator is Fe
3o
4, Fe
2o
3, MnO
2, one in ZnO, mix and stir, being squeezed into raw material ball;
D, by the raw material ball in step C in an oven 120 DEG C dry 24 hours;
E, by step D dry after raw material ball, be placed in High Temperature Furnaces Heating Apparatus and rise to 300 DEG C from room temperature with 120 DEG C/h, heating 2h, then 550 DEG C are risen to 60 DEG C/h, activation 10-30min, rise to 1050 DEG C of roasting 10-30min with 300 DEG C/h again, naturally cool to room temperature, obtain blast furnace dedusting ash basal granule sub-electrode material.
4. the preparation method of blast furnace dedusting ash basal granule sub-electrode as claimed in claim 3, is characterized in that: according to weight percent meter, and dry thin blast furnace dedusting ash accounts for 50-60%, dry carefully shale accounts for 10-20%, pore former accounts for 10-20%, activator accounts for 10-20%.
5. the preparation method of blast furnace dedusting ash basal granule sub-electrode as claimed in claim 3, is characterized in that: described pore former is the one in powdered carbon, saw dust, starch, polyvinyl alcohol (PVA) particle.
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| CN108840430A (en) * | 2018-07-10 | 2018-11-20 | 天津工业大学 | A kind of electro-catalysis blast furnace dedusting ash reinforcing up-flow anaerobic sludge blanket system |
| CN109956536B (en) * | 2019-03-22 | 2021-11-26 | 武汉钢铁有限公司 | Reactive filter material for coking wastewater treatment and preparation and use methods thereof |
| CN113754149A (en) * | 2021-09-28 | 2021-12-07 | 天津工业大学 | Spherical porous filler and electrolytic oxidation system for treating organic matters in high-salt water |
| CN114150150A (en) * | 2021-11-23 | 2022-03-08 | 苏州大学 | Nano zero-valent iron based on blast furnace dust and preparation method thereof |
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| CN1358672A (en) * | 2002-01-16 | 2002-07-17 | 中山大学 | Three-dimension electrode reactor and use for treating organic waste water |
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