CN107487986A - Glass microballoon and the method for reclaiming dross sensible heat are prepared using liquid blast furnace cinder - Google Patents
Glass microballoon and the method for reclaiming dross sensible heat are prepared using liquid blast furnace cinder Download PDFInfo
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- CN107487986A CN107487986A CN201710773004.7A CN201710773004A CN107487986A CN 107487986 A CN107487986 A CN 107487986A CN 201710773004 A CN201710773004 A CN 201710773004A CN 107487986 A CN107487986 A CN 107487986A
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B19/00—Other methods of shaping glass
- C03B19/10—Forming beads
- C03B19/1005—Forming solid beads
- C03B19/102—Forming solid beads by blowing a gas onto a stream of molten glass or onto particulate materials, e.g. pulverising
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C1/00—Ingredients generally applicable to manufacture of glasses, glazes, or vitreous enamels
- C03C1/002—Use of waste materials, e.g. slags
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C12/00—Powdered glass; Bead compositions
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B3/00—General features in the manufacture of pig-iron
- C21B3/04—Recovery of by-products, e.g. slag
- C21B3/06—Treatment of liquid 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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
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- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Manufacturing & Machinery (AREA)
- Metallurgy (AREA)
- Furnace Details (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention discloses a kind of method for preparing glass microballoon using liquid blast furnace cinder and reclaiming dross sensible heat, comprise the following steps：Modulator is added in liquid blast furnace and is uniformly mixed, quenched liquid blast furnace is obtained, the quenched liquid blast furnace of gained is heated, so that modulator melts, after to be modulated dose of fusing, 10~30 minutes are incubated in 1400~1750 DEG C；The liquid blast furnace of vertical drop is crushed by granulation by the air-spray that Laval nozzle sprays, obtains slag particle；Slag particle enters the swinging lag cooler from the entrance of swinging lag cooler and stopped 10~15 minutes in the swinging lag cooler, discharged from swinging lag cooler, toxic and harmful gas is not produced during this method processing liquid blast furnace cinder, waste heat in blast furnace slag can rationally be reclaimed, the energy is saved, reduce the pollution to environment, the glass microballoon product produced has the advantages that light, hardness is high, corrosion resistance is good.
Description
Technical field
The invention belongs to the preparing technical field of glass microballoon, relates in particular to one kind and is prepared using liquid blast furnace cinder
Glass microballoon and the method for reclaiming dross sensible heat.
Background technology
Glass microballoon is a kind of new material widely used, performance is special that developed recently gets up, and its granularity is generally
Between a few micrometers to several millimeters, have the advantages that light, hardness is high, intensity is high and stable chemical performance, be widely used in
Every field, such as it is used as proppant during oil exploitation；Enhancing packing material as rubber, plastic products；
The reflectorized material etc. of billboard, traffic sign.
Blast furnace slag is caused waste residue in steel smelting procedure, often smelts one ton of pig iron and about produces 250kg~350kg's
Blast furnace slag, according to 1,000,000,000 tons of calculating of China's pig iron annual production, the production quantity of slag may be up to 300,000,000 tons or so.For these waste residues abandon no
With, not only can land occupation, also pollute environment.The liquid blast furnace cinder that China discharges from blast furnace at present mainly uses flush slag
Method processing, obtained grain slag is used as to the mineral admixture of cement and concrete after levigate.Conventional flush slag method processing liquid
Blast furnace cinder is low in the presence of processing product grain slag value, and water resources consumption amount is big, and dusty gas discharge rate is big, and high level sensible heat is difficult
The problems such as to reclaim.The temperature that blast furnace slag is discharged from blast furnace is generally 1400 DEG C~1600 DEG C, the sensible heat that 1t blast furnace slags contain
Equivalent to the heat of 57kg standard coal combustions.Problem is reclaimed for blast furnace slag waste heat, many R＆D institutions are all actively being ground
Study carefully.Its utilization rate is relatively low to be seen to blast furnace slag recycling level at present with China, the economic benefit of comprehensive utilization is not also high.Institute
With from the perspective of comprehensive utilization of resources and energy conservation, how to improve the utilization rate of blast furnace slag, how rational and efficient use
Blast furnace slag resource, seek the new way of blast furnace slag recycling and turn into the country using blast furnace slag exploitation high value added product
Outer focus of attention.
Patent 201310353062.9 proposes a kind of high-temperature slag dry process and recovery sensible heat apparatus and method, the invention
Device include chain grate machine, water-cooling wall, scum board, slag particle collector and waste-heat recovery device, the first drive sprocket of chain grate machine
Positioned at the lower section of tundish, water-cooling wall is located above grate plate, and one end and the grate plate of scum board leave gap, are set below the other end
There is slag particle collector, the bottom of slag particle collector is provided with disintegrating machine and waste-heat recovery device.Method is：Start chain grate machine, by height
Warm slag is put into by tundish on the grate plate on chain grate machine top, after the cooled solidification of high-temperature slag by scum board from grate plate
Separation, is sent in slag particle collector, enters back into disintegrating machine, after crushed into waste-heat recovery device, the method for the invention
Although low in the pollution of the environment with simple to operate, the features such as process costs are low, its vitreum particle diameter is larger, and application field is relative
It is single.Patent 201210339309.4 proposes a kind of method and system of slag granulating and Exposure degree, and the method for the invention is
Water is pressurizeed and it is sprayed from nozzle, forms column high-speed water jet, the flat belt-like slag stream for impacting free-falling is narrower
Side, slag is smashed, broken rear slag falls on fluidisation after wall cooling and recovery section sensible heat are water cooled in dropping process
Solidified completely after the air cooling being externally entering in bed bed or on air-cooled mobile grate, complete to be granulated and obtain heat
The hot blast obtained at wind, fluid bed or mobile grate is sent to and reclaims what heat exported fluid bed or mobile grate at waste heat boiler
Slag particles are sent into moving bed and further reclaim sensible heat after granulation.The invention crushes slag using high-speed water jet, though it is broken
Good with the effect dispersed, slag wool growing amount is small, but its water consumption is big, and a large amount of SO can be produced in current cooling procedure2With
H2S gases, cause environmental pollution.
The content of the invention
In view of the shortcomings of the prior art, using liquid blast furnace cinder to prepare glass it is an object of the invention to provide one kind micro-
Pearl and the method for reclaiming dross sensible heat, this method using air quenching beading, directly produce glass microballoon, simultaneously by simple quenched
Microballon sensible heat is reclaimed, up to more than 75%, the energy-conservation for both having met the blast furnace utilization of country's proposition subtracts its Exposure degree utilization rate
Row's policy, glass microballoon production cost is reduced again, have and save energy consumption, recycle and continuous production.
The purpose of the present invention is achieved by following technical proposals.
A kind of method for preparing glass microballoon using liquid blast furnace cinder and reclaiming dross sensible heat, comprises the following steps：
1) add and modulator and uniformly mix in liquid blast furnace, obtain quenched liquid blast furnace, the modulator and
The ratio of the mass parts of liquid blast furnace is (1~3)：10, the modulator by 12.6~16.2wt% SiO2, 36.5~
42wt% CaO, 6.7~10.2wt% MgO, 0.54~3.2wt% Al2O3, 11.1~15.1wt% Fe2O3With it is remaining
The MnO compositions of amount；
In the above-mentioned technical solutions, in the step 1), the modulator by 12.6~13.5wt% SiO2、36.5
~38wt% CaO, 6.7~8.3wt% MgO, 0.54~1.7wt% Al2O3, 11.1~12.1wt% Fe2O3With it is remaining
The MnO compositions of amount.
In the above-mentioned technical solutions, in the step 1), the modulator by 14.2~15.5wt% SiO2、38.5
~41.3wt% CaO, 9~9.6wt% MgO, 2.2~3wt% Al2O3, 13.4~15wt% Fe2O3With surplus
MnO is formed.
In the above-mentioned technical solutions, the modulator is flyash, iron tailings powder, agstone, slag, alkaline residue and fluorite
In one or more.
In the step 1), the liquid blast furnace is located in slag ladle.
2) quenched liquid blast furnace obtained by step 1) is heated, so that modulator melts, treats the modulator fusing
Afterwards, 10~30 minutes are incubated in 1400~1750 DEG C；
In the step 2), the heat time is 10~30 minutes, and heating-up temperature is 1400~1750 DEG C.
In the step 2), during the quenched liquid blast furnace heating, it is blown from the bottom of the slag ladle
Inert gas, for promoting quenched liquid blast furnace convection current.
3) quenched liquid blast furnace obtained by step 2) is passed through into the drainage of slagging tray under the exit normal of slagging tray
Fall, one Laval nozzle is set in the side of liquid blast furnace fall trajectory, the air-spray sprayed by Laval nozzle will
The broken granulation of the liquid blast furnace of vertical drop, obtains slag particle；In the presence of the air-spray, the slag particle is from swinging
The entrance of lag cooler enters swinging lag cooler and stopped 10~15 minutes in the swinging lag cooler, so that slag particle shrinks shape
Into glass microballoon, glass microballoon is discharged from the swinging lag cooler；Wherein, the pressure of the Laval nozzle injection is
0.1~0.3MPa, the speed of the air-spray is supersonic speed, and the rotating speed of the swinging lag cooler is 3~6r/min.
In the step 3), cooling jacket is provided with the swinging lag cooler, for carrying out heat to the slag particle
Amount recovery.
In the step 3), the temperature from the glass microballoon of swinging lag cooler discharge is 100~150 DEG C.
Compared to prior art, the present invention provide after one kind mixes liquid blast furnace with a certain amount of modulator air quenching into
Pearl, then the liquid blast furnace cinder processing for carrying out waste heat recovery through slag cooler and collecting glass microballoon product utilize new method.The party
Toxic and harmful gas is not produced during method processing liquid blast furnace cinder, waste heat in blast furnace slag can rationally be reclaimed, saved
The energy, reduces the pollution to environment, the glass microballoon product produced has light, hardness is high, corrosion resistance is good etc.
Advantage, it can partly substitute existing glass microballoon product, extensively using fields such as building materials, chemical industry, oil, traffic.
Brief description of the drawings
Fig. 1 is the microphoto of the preparation-obtained glass microballoon of method of the present invention.
Embodiment
Glass microballoon excellent performance, the steady quality prepared according to the inventive method, can be applied to multiple fields.
In the embodiment of the present invention, modulator passes through flyash, iron tailings powder, agstone, slag, alkaline residue
Configured with the one or more in fluorite.Cooling jacket is provided with swinging lag cooler, for carrying out heat to slag particle
Recovery.
Technical scheme is further illustrated with reference to specific embodiment.
Embodiment 1
A kind of method for preparing glass microballoon using liquid blast furnace cinder and reclaiming dross sensible heat, comprises the following steps：
1) liquid blast furnace is flowed into slag ladle from blast furnace slag chute, modulator and uniform is added in the liquid blast furnace (slag ladle)
Mixing, obtains quenched liquid blast furnace, wherein, the ratio of the mass parts of modulator and liquid blast furnace is 1.5：10, modulator by
15wt% SiO2, 38.5wt% CaO, 9.5wt% MgO, 2.2wt% Al2O3, 13.4wt% Fe2O3With surplus
MnO is formed.
2) slag ladle equipped with quenched liquid blast furnace obtained by step 1) is transported to heating station, slag ladle is placed under electrode
Fang Jinhang is heated, and the heat time is 20 minutes, and heating-up temperature is 1450 DEG C, so that modulator melts, meanwhile, it is high in quenched liquid
During clinker heats, inert gas is blown from the bottom of slag ladle, every 10min observation modulator fusing situations, is constantly adjusted
Whole heating power, make modulator rapid melting, for promoting quenched liquid blast furnace convection current, its uniform temperature component.It is to be modulated
After agent fusing, the liquid blast furnace to have been stirred in slag ladle is poured into direct current electric arc furnace, 10 minutes are incubated in 1500 DEG C；
3) blow-on is slagged tap, and quenched liquid blast furnace obtained by step 2) is passed through to drainage the going out from slagging tray of slagging tray
Mouth vertical drop, a Laval nozzle is set in the side of liquid blast furnace fall trajectory, the Laval nozzle is located at simultaneously to slip
The lower section of the outlet of slag chute, the liquid blast furnace of vertical drop is crushed by granulation by the air-spray that Laval nozzle sprays,
Obtain slag particle；Meanwhile in the presence of air-spray, slag particle enters the swinging lag cooler simultaneously from the entrance of swinging lag cooler
Stopped 10 minutes in the swinging lag cooler, in the presence of surface tension, slag particle shrinks to form glass microballoon, from swinging
Lag cooler discharges glass microballoon, and now, the temperature from the glass microballoon of swinging lag cooler discharge is 110 DEG C.Wherein, draw
The pressure of Wa Er nozzles injection is 0.2MPa, and the speed of air-spray is supersonic speed, and the rotating speed of swinging lag cooler is 6r/min.
After swinging lag cooler carries out sufficient heat exchange with glass microballoon, the sensible heat in glass microballoon is largely recovered,
Waste heat recovery rate is 79%.The microballon of cooling is discharged in microballon collector, by sieving and being packaged to be microballon product.It will collect
Glass microballoon detected, testing result is that bead yield rate is 81.12%.Wherein, glass of the particle diameter in the range of 2.5~5mm
Microballon quantity proportion is 20.19%, and glass microballoon quantity proportion of the particle diameter in the range of 1~2.5mm is 46%, grain
Glass microballoon quantity proportion of the footpath in the range of the mesh of 1mm~50 is 12.9%, glass microballoon number of the particle diameter in 50~100 mesh
It is 2.06% to measure proportion, and glass microballoon quantity proportion of the particle diameter below 100 mesh is 1.59%.
Embodiment 2
A kind of method for preparing glass microballoon using liquid blast furnace cinder and reclaiming dross sensible heat, comprises the following steps：
1) liquid blast furnace is flowed into slag ladle from blast furnace slag chute, modulator and uniform is added in the liquid blast furnace (slag ladle)
Mixing, obtains quenched liquid blast furnace, wherein, the ratio of the mass parts of modulator and liquid blast furnace is 2：10, modulator by
13wt% SiO2, 36.8wt% CaO, 8wt% MgO, 1.7wt% Al2O3, 12wt% Fe2O3With the MnO groups of surplus
Into.
2) slag ladle equipped with quenched liquid blast furnace obtained by step 1) is transported to heating station, slag ladle is placed under electrode
Fang Jinhang is heated, and the heat time is 25 minutes, and heating-up temperature is 1600 DEG C, so that modulator melts, meanwhile, it is high in quenched liquid
During clinker heats, inert gas is blown from the bottom of slag ladle, every 10min observation modulator fusing situations, is constantly adjusted
Whole heating power, make modulator rapid melting, for promoting quenched liquid blast furnace convection current, its uniform temperature component.It is to be modulated
After agent fusing, the liquid blast furnace to have been stirred in slag ladle is poured into direct current electric arc furnace, 20 minutes are incubated in 1700 DEG C；
3) blow-on is slagged tap, and quenched liquid blast furnace obtained by step 2) is passed through to drainage the going out from slagging tray of slagging tray
Mouth vertical drop, a Laval nozzle is set in the side of liquid blast furnace fall trajectory, the Laval nozzle is located at simultaneously to slip
The lower section of the outlet of slag chute, the liquid blast furnace of vertical drop is crushed by granulation by the air-spray that Laval nozzle sprays,
Obtain slag particle；Meanwhile in the presence of air-spray, slag particle enters the swinging lag cooler simultaneously from the entrance of swinging lag cooler
Stopped 15 minutes in the swinging lag cooler, in the presence of surface tension, slag particle shrinks to form glass microballoon, from swinging
Lag cooler is discharged, and now, the temperature from the glass microballoon of swinging lag cooler discharge is 120 DEG C.Wherein, Laval nozzle
The pressure of injection is 0.3MPa, and the speed of air-spray is supersonic speed, and the rotating speed of swinging lag cooler is 5r/min.
After swinging lag cooler carries out sufficient heat exchange with glass microballoon, the sensible heat in glass microballoon is largely recovered,
Waste heat recovery rate is 75%.The glass microballoon of cooling is discharged in microballon collector, by sieving and being packaged to be microballon product.Will
The glass microballoon of collection is detected, and testing result is that bead yield rate is 78.9%.Wherein, glass of the particle diameter in the range of 2.5~5mm
Glass microballon quantity proportion is 10.82%, and glass microballoon quantity proportion of the particle diameter in the range of 1~2.5mm is
42.56%, glass microballoon quantity proportion of the particle diameter in the range of the mesh of 1mm~50 is 19.96%, and particle diameter is in 50~100 mesh
In the range of glass microballoon quantity proportion be 3.43%, glass microballoon quantity proportion of the particle diameter below 100 mesh be
2.14%.
1) bulk density
The glass microballoon prepared by the embodiment of the present invention 1 is taken, is put into drying box and dries to constant, by dried glass
Microballon is classified according to particle size range described in table 1 below, after classification, will be surveyed per class glass microballoon according to following bulk densities
Method for testing is tested, and obtains bulk density of the glass microballoon under different-grain diameter prepared by the present invention.
Bulk density method of testing：Prepare a cylinder, incited somebody to action above cylinder nozzle at 50mm with sample spoon or shovel
Glass microballoon uniformly pours into, and allows glass microballoon to fall naturally, must not collide cylinder, and it is in cone that glass microballoon above nozzle is made after filling
Shape, then struck off from center to both sides along cylinder nozzle edge with ruler, filled and led up at surface indentation with less the gathering materials of particle diameter
Afterwards, weigh
ρ=(m1-m2)/v
M1 --- sample and cylinder gross mass
M2 --- cylinder quality
V --- cylinder volume
The bulk density test result of table 1
2) microhardness
Appoint in the glass microballoon that particle diameter made from embodiment 2 is 2.5~5mm and take 5, using HVS-1000A type digital displays
Microhardness instrument, its micro-vickers hardness is surveyed, wherein, experiment power F=2.942N.The Vickers hardness of 5 glass microballoons is as follows：
Appoint in the glass microballoon that the particle diameter obtained from embodiment 2 is 1~2.5mm and take 5, using HVS-1000A type digital displays
Microhardness instrument, its micro-vickers hardness is surveyed, wherein, experiment power F=1.962N.The Vickers hardness of 5 glass microballoons is as follows：
3) chemical corrosion
Glass microballoon made from embodiment 1 is classified according to particle size range, after classification, by every kind of particle size range
Glass microballoon is immersed in the solution of acid or alkali, and its weight loss is surveyed after boiling in the solution four hours.Wherein, every kind of particle size range
The quality of interior glass microballoon is 5.0000 ± 0.01g.
Soak is as follows：
N represents equivalent concentration：The gram-equivalent number of solution concentration contained solute in 1 liter of solution, for example, in 1 liter of concentrated hydrochloric acid
Containing 12 gram equivalents of hydrochloric acid (HCL), then solubility is 12N.
(quality) loss late
In summary, the glass microballoon bulk density that method of the invention is prepared is 1450~1850kg/m3, beading
Rate be 78~82%, glass microballoon quantity proportion of the particle diameter in the range of 1~2.5mm be 42~46%, particle diameter be 2.5~
5mm glass microballoon Vickers hardness is 1034~1252, and the glass microballoon Vickers hardness that particle diameter is 1~2.5mm is 600~817；
H2O corrode loss late be 0.06~0.1%, HCl corrode loss late be 3~4.3%, NaOH erosion loss lates be 0.05~
0.31%.
In the inventive solutions, it is reachable by adjusting heating-up temperature, heat time and modulator composition etc.
To the property consistent with above-described embodiment.
Exemplary description has been done to the present invention above, it should explanation, in the situation for the core for not departing from the present invention
Under, any simple deformation, modification or other skilled in the art can not spend the equivalent substitution of creative work equal
Fall into protection scope of the present invention.
Claims (10)
- A kind of 1. method for preparing glass microballoon using liquid blast furnace cinder and reclaiming dross sensible heat, it is characterised in that including with Lower step：1) modulator is added in liquid blast furnace and is uniformly mixed, obtains quenched liquid blast furnace, the modulator and liquid The ratio of the mass parts of blast furnace slag is (1~3)：10, the modulator by 12.6~16.2wt% SiO2, 36.5~42wt% CaO, 6.7~10.2wt% MgO, 0.54~3.2wt% Al2O3, 11.1~15.1wt% Fe2O3With the MnO groups of surplus Into；2) quenched liquid blast furnace obtained by step 1) is heated, so that modulator melts, after modulator fusing, in 1400~1750 DEG C are incubated 10~30 minutes；3) quenched liquid blast furnace obtained by step 2) is fallen by the drainage of slagging tray from the exit normal of slagging tray, The side of liquid blast furnace fall trajectory sets a Laval nozzle, under the air-spray sprayed by Laval nozzle is incited somebody to action vertically The broken granulation of liquid blast furnace fallen, obtains slag particle；In the presence of the air-spray, the slag particle is from swinging lag cooler Entrance enter and swinging lag cooler and stopped 10~15 minutes in the swinging lag cooler so that slag particle shrinks to form glass Microballon, the glass microballoon are discharged from the swinging lag cooler；Wherein, the pressure of the Laval nozzle injection is 0.1~0.3MPa, the speed of the air-spray is supersonic speed, and the rotating speed of the swinging lag cooler is 3~6r/min.
- 2. according to the method for claim 1, it is characterised in that in the step 1), the modulator by 12.6~ 13.5wt% SiO2, 36.5~38wt% CaO, 6.7~8.3wt% MgO, 0.54~1.7wt% Al2O3, 11.1~ 12.1wt% Fe2O3Formed with the MnO of surplus.
- 3. according to the method for claim 1, it is characterised in that in the step 1), the modulator by 14.2~ 15.5wt% SiO2, 38.5~41.3wt% CaO, 9~9.6wt% MgO, 2.2~3wt% Al2O3, 13.4~ 15wt% Fe2O3Formed with the MnO of surplus.
- 4. according to the method in claim 2 or 3, it is characterised in that the modulator is flyash, iron tailings powder, lime One or more in stone flour, slag, alkaline residue and fluorite.
- 5. according to the method for claim 4, it is characterised in that in the step 1), the liquid blast furnace is located at slag In tank.
- 6. according to the method for claim 5, it is characterised in that in the step 2), the heat time is 10~30 minutes, Heating-up temperature is 1400~1750 DEG C.
- 7. according to the method for claim 6, it is characterised in that in the step 2), in the quenched liquid blast furnace During heating, inert gas is blown from the bottom of the slag ladle, for promoting quenched liquid blast furnace convection current.
- 8. according to the method for claim 7, it is characterised in that in the step 3), set in the swinging lag cooler Cooling jacket is equipped with, for carrying out heat recovery to the slag particle.
- 9. according to the method for claim 8, it is characterised in that in the step 3), arranged from the swinging lag cooler The temperature of the glass microballoon gone out is 100~150 DEG C.
- 10. such as application of any one methods described in glass microballoon is prepared in claim 1~9, it is characterised in that described The bulk density for the glass microballoon that method is prepared is 1450~1850kg/m3, glass microballoon that methods described is prepared Bead yield rate be 78~82%；The glass microballoon Vickers hardness that particle diameter is 1~2.5mm is 600~817；Particle diameter is that 2.5~5mm glass microballoon Vickers is hard Spend for 1034~1252；H2It is that 0.06~0.1%, HCl erosions loss late is that 3~4.3%, NaOH corrodes damage that O, which corrodes loss late, Mistake rate is 0.05~0.31%.
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|---|---|---|---|---|
| CN110218100A (en) * | 2019-07-20 | 2019-09-10 | 兰州理工大学 | A kind of method that nickel-iron smelting high-temperature slag prepares hollow ceramic microspheres |
| CN110218008A (en) * | 2019-06-24 | 2019-09-10 | 华北理工大学 | A kind of carbon containing molten iron carries out the method modified except iron to liquid steel slag of coming out of the stove |
| CN110512038A (en) * | 2019-10-11 | 2019-11-29 | 攀钢集团攀枝花钢铁研究院有限公司 | Vanadium slag wind quenching thinning processing method |
| CN113322360A (en) * | 2020-02-28 | 2021-08-31 | 宝山钢铁股份有限公司 | Blast furnace slag granulation and waste heat recovery device and method |
| CN114105474A (en) * | 2022-01-27 | 2022-03-01 | 华北理工大学 | Blast furnace slag and waste medicinal glass co-processing method |
| CN115246703A (en) * | 2022-09-26 | 2022-10-28 | 华北理工大学 | Method for controlling particle size of blast furnace slag-based glass beads by utilizing shear thinning characteristic |
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| CN110218008A (en) * | 2019-06-24 | 2019-09-10 | 华北理工大学 | A kind of carbon containing molten iron carries out the method modified except iron to liquid steel slag of coming out of the stove |
| CN110218008B (en) * | 2019-06-24 | 2021-11-05 | 华北理工大学 | Method for carrying out iron removal modification on liquid steel slag discharged from furnace by using carbon-containing molten iron |
| CN110218100A (en) * | 2019-07-20 | 2019-09-10 | 兰州理工大学 | A kind of method that nickel-iron smelting high-temperature slag prepares hollow ceramic microspheres |
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| CN115246703A (en) * | 2022-09-26 | 2022-10-28 | 华北理工大学 | Method for controlling particle size of blast furnace slag-based glass beads by utilizing shear thinning characteristic |
| CN115246703B (en) * | 2022-09-26 | 2022-11-25 | 华北理工大学 | Method for controlling particle size of blast furnace slag-based glass beads by utilizing shear thinning characteristic |
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