CN103979795B - A kind of method utilizing blast furnace cinder to produce foam pyroceram sheet material and equipment thereof - Google Patents
A kind of method utilizing blast furnace cinder to produce foam pyroceram sheet material and equipment thereof Download PDFInfo
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- CN103979795B CN103979795B CN201410207238.1A CN201410207238A CN103979795B CN 103979795 B CN103979795 B CN 103979795B CN 201410207238 A CN201410207238 A CN 201410207238A CN 103979795 B CN103979795 B CN 103979795B
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Abstract
The invention belongs to metallurgy and field of inorganic nonmetallic material, it is provided that a kind of method utilizing blast furnace cinder to produce foam pyroceram.The method step is as follows: (1) blast furnace cinder is transferred to the quenched stirring pool of composition, adds modification agent, stirs, it is ensured that slag temperature；(2) slag is transferred to depositing reservoir, adds fining agent, stirs, and keeps slag temperature；(3) slag enters water quenching pool, is become crystallite pellet by shrend；(4), after crystallite pellet is dried and ground, the crystallite pellet that granule size is different is screened out；(5) qualified crystallite pellet adds foaming agent, and stir；(6) crystallite pellet is layered on refractory slab, enters coring district and is incubated a period of time；(7) enter crystallization region and be incubated a period of time；(8) enter cooling area cooling, obtain finished foam devitrified glass.The present invention takes full advantage of blast furnace cinder and solid waste resource, and the energy of blast furnace cinder, and product strength is high, and density is little, corrosion-resistant, heat insulation, sound insulation.
Description
Technical field
The invention belongs to metallurgy and field of inorganic nonmetallic material, particularly relate to one and utilize blast furnace cinder raw
Produce method and the equipment thereof of foam pyroceram sheet material.
Background technology
Showing according to the data that world steel association announces, within 2012, global pig iron yield is 1,100,000,000 tons,
The country that wherein yield is the highest is China, and the yield of 2012 1 year is up to 6.5 hundred million tons.At blast furnace process
During, even if calculating according to the slag ratio of 300Kg, the yield of blast-furnace slag also up to nearly 200,000,000 tons.
These high temperature furnace slags are utilized to be increasingly becoming focus of concern the most efficiently.The State of Blast Furnace of present stage
Residues processing technique is substantially all and uses flush slag technique, and the product obtained is basically used for manufacture of cement,
And the blast furnace granulated slag being used as cement producting material almost has no profit and can say.The most every quenching 1t temperature exists
The high temperature furnace slag of 1450～1550 DEG C needs consumption of new water 1.2t, and produces a large amount of waste water, the steaming of corrosivity heat
Vapour and heat can not reclaim, and the most a large amount of water resources used can not be reused by circulation, high temperature furnace slag
Present in a large amount of sensible heats and latent heat hardly result in effective recycling.
Foam pyroceram is made up of glass phase, crystal and pore three part, is being uniform-distribution with a large amount of gas
In the glass phase matrix in hole, it is dispersed with substantial amounts of tiny crystals, makes glass link together with crystal network,
Form hyalopilitic texture, be the Multifunction material of a kind of superior performance.Due to foam pyroceram
Architectural feature itself and material behavior, make foam pyroceram have many premium properties: do not absorb water,
Non-hygroscopic, will not be because using reduction heat insulation and preservation effect all the year round；2. there is good heat-proof quality, do not burn,
Can use in-270～500 DEG C of wide temperature range；3. there is good sound insulation value；4. mechanical strength is high,
And be prone to process, cut or glue be combined into variously-shaped goods；The most non-efflorescing cementitious, the most aging, itself is nontoxic,
"dead" and corrosivity；Insect bite and microbiologic(al) corrosion is not eaten by mouse；7. there is good acid-fast alkali-proof.
At published Chinese patent (application number: 201010537506.8, date of publication: in May, 2011
18 days) disclose one and utilize blast furnace hot slag to prepare foam pyroceram and method thereof, with blast furnace hot melt
Slag is primary raw material, and by flyash, borax, soda ash, dilute mine tailing that selects, quartz sand etc. measures respectively, mixed
Even, it is fired into porous blocks and adds in cinder ladle, utilize blast furnace hot slag to melt, melting charge is through shrend
Obtain varigrained glass shrend material；Glass shrend material is dried, ball milling, adds foaming agent, mix,
Compacting or stone shaping, then prepare foam pyroceram through coring, crystallization, sintering.Chinese patent
Application (application number: 201210383926.4, date of publication: on December 26th, 2012) discloses one
The method utilizing composite industrial residue to produce foam pyroceram, is characterized in that crushing difference industrial residue,
Grind to form raw meal powder after mixing in proportion, by raw meal powder heating and melting, quenching, grind to form grog after drying
Powder, then adds Nucleating Agent, foaming agent, foam stabilizer, flux, reinforcing agent formation foam pyroceram
Batch, after compressing for batch, through preheating, foaming, steady bubble, annealing stage, after burning till
Obtain foam pyroceram.Chinese patent application (application number: 201210326090.4, date of publication: 2012
On December 12) disclose one and utilize liquid red heat iron and steel slag as primary raw material, add certain
The auxiliary materials such as the raw mineral materials of amount and a small amount of industrial chemicals are prepared from.Its preparation method includes following
Step: (1) liquid red heat steel slag first removes iron and steel through cinder ladle precipitation and obtains iron-free liquid red heat steel slag,
The auxiliary material wherein mixed is added simultaneously in stirring pool；Stirring pool is built with one group
Rotary agitator, agitator by steel slag and auxiliary material and both to react the bubble agitation of generation uniform,
Form foam glass；(2) foam glass is obtained foamed glass blank in 1000～1250 DEG C of shapings；(3)
Foamed glass blank is sent into holding furnace, with in stove cooling procedure, makes foam glass crystallization and annealing,
It is changed into foam pyroceram blank；(4) foam pyroceram blank is processed into product required size.
Patent description disclosed above, the raw material of foam pyroceram is mainly blast furnace hot slag, Industry Waste
Slag and liquid red heat steel slag, though make use of the partial heat energy of slag, but energy consumption in heat treatment production process
Greatly.And its product is mainly foam pyroceram, porous surface is coarse, and appreciation effect is poor.
Summary of the invention
For deficiencies of the prior art, it is an object of the invention to provide one and utilize blast furnace to melt
Slag produces method and the equipment thereof of foam pyroceram sheet material, such that it is able to use in a large number contained by blast furnace cinder
Heat energy and the by-product gas of iron and steel enterprise, decrease the generation of waste water,waste gas and industrial residue and flue dust, subtract
Lack blast furnace process to the pollution of environment and consuming excessively of resource, substantially increase the applicable model of blast furnace slag
Enclose, improve the economic profit of iron and steel enterprise.
In order to achieve the above object, the present invention uses following technical proposals:
The present invention provides a kind of method utilizing blast furnace cinder to produce foam pyroceram sheet material, described method
Including following raw material, described percentage is mass percent, and blast furnace cinder accounts for the 40-80% of total raw material quality,
The addition of composition modification agent accounts for the 15-55% of total raw material quality, and the addition of fining agent accounts for total raw material quality
0.2～10%；Color additive accounts for the 0-5% of total raw material quality；
Described method includes following key step:
(1) quenched stirring: blast furnace cinder is transferred in the quenched stirring pool of composition, adds composition modification agent, slag
It is in 1450～1550 DEG C of high temperature intervals；
(2) clarification stirring: slag is entered in slag depositing reservoir by the cinder notch bottom the quenched stirring pool of composition, adds
Entering fining agent, stirring makes its composition uniform；
(3) cinder ladle buffering: slag is entered in cinder ladle by the cinder notch bottom depositing reservoir；
(4) slag water quenching: slag cinder notch from cinder ladle enters water quenching pool, carries out Water Quenching, forms crystallite
Pellet；
(5) drying and grinding: after carrying out the crystallite pellet that step (4) obtains drying grinding, screen out big grain
Footpath crystallite pellet and small particle crystallite pellet；By little crystallite pellet adds foaming agent, stirred by solid
Device stirs so that it is composition is uniform, obtains the crystallite compound that foams；
(6) cloth: foaming crystallite compound is layered cloth on mould with big crystallite pellet；
(7) coring: nucleation temperature is 700～850 DEG C, nucleation time is 0.5～3h；
(8) crystallization: crystallization temperature is 900～1150 DEG C, crystallization time is 0.5～3h；
Described nucleation time is the time kept under nucleation temperature.Described crystallization time is at crystallization temperature
The time of lower holding.
(9) cooling: product step (8) obtained, is cooled to less than 100 DEG C, and air cooling obtains foam crystallite
Glass board material.Preferably, it is 5 DEG C/min-10 DEG C/min with cooling velocity, is cooled to less than 100 DEG C.Excellent
Choosing, aforementioned cooling velocity is 10 DEG C/min.
Gained devitrified glass principal crystalline phase of the present invention is wollastonite.
Above-mentioned total raw material quality does not include the foaming agent added in little crystallite pellet in above-mentioned steps (5)
Quality.
Further, the addition of fining agent accounts for the 0.2～5% of total raw material quality.
Further, in above-mentioned steps (1), blast furnace cinder stirs 1 hour in quenched stirring pool.
Further, in above-mentioned steps (6), by crystallite pellet by distributing device paving to mould.
Further, in above-mentioned steps (7), nucleation temperature is 840～850 DEG C, and nucleation time is 1h.
Further, in above-mentioned steps (8), crystallization temperature is 1140～1150 DEG C, and crystallization time is 1h.
Further, said method also includes, is carried out by the foam pyroceram product that step (9) obtains
Cutting, big particle diameter crystallite pellet the glass obtained is referred to as pure devitrified glass, enters pure devitrified glass surface
Row sanding and polishing, obtains finished foam crystallizing glass sheet material.
Further, described method is made up of following raw material, and described percentage is mass percent, blast furnace
Slag accounts for the 40-80% of total raw material quality, and the addition of composition modification agent accounts for the 15-55% of total raw material quality,
The addition of fining agent accounts for the 0.2～10% of total raw material quality；Color additive accounts for total raw material quality
0-5%.
In the application, big particle diameter crystallite pellet is also referred to as big crystallite pellet, and small particle crystallite pellet is also referred to as
Little crystallite pellet.Described little crystallite pellet is also referred to as glass dust.Described big particle diameter crystallite pellet is also referred to as glass
Glass particle.Further, the granularity of described little crystallite pellet is 200～325 mesh.Described big crystallite pellet
Granularity be 10～100 mesh.
Further, the composition modification agent of use includes: quartz sand, fluorite, potassium feldspar, albite,
Clay, diatomite, kaolin, potter's clay, mine tailing, Power Plant Ash, flyash, domestic sludge, blast furnace titanium
A kind of or the combination of at least two in slag and waste computer circuit board of mobile phone.
The selection of composition modification agent (referred to as modification agent or adjusting material) and addition are according to producing product
Component requirements and the price of modification agent and available sources determine.
Further, in said method, the fining agent of use includes: nitrate, arsenic trioxide, awns
The combination of a kind of or at least two in nitre, sulfate of ammoniac, antimony oxide and fluoride, fining agent
Addition is 0.1-10%.
Further, in said method, the colouring agent of use includes: TiO2、Cr2O3、Cu2O、CoO、
NiO、Fe2O3And rare earth oxide etc..Selection and the addition of colouring agent are wanted according to product colour
Ask and be added.
Further, the foaming agent of use includes: urea, starch, carbon dust, Na2CO3、K2CO3、
SiC、CaCO3、MnO2、(NH4)2CO3Or composite foamable agent, the addition of foaming agent is little crystallite
The 0.1-10% of pellet mass, the granularity of foaming agent is 100～200 mesh.Further, the addition of foaming agent
Amount is the 5% of little crystallite pellet mass.
Further, in said method, the blast furnace cinder used includes following compositions: SiO2For 30-40%,
CaO be 30-40%, MgO be 5-15%, Al2O3It is that 0.1-5%, MnO are for 5-25%, FeO
0.1-5%, K2O is 0.1-5%, Na2O is 0.1-5%, and other composition is 2-10%.
Further, in said method, the blast furnace cinder used includes following compositions: SiO2It is 34%,
CaO is 37%, and MgO is 11%, Al2O3Being 10%, FeO is 3%, and MnO is 2%, and K2O is
0.5%, Na2O is 0.5%, and other composition is 2%.Other composition is impurity, and content is relatively low, to preparation
The foam pyroceram sheet material obtained is without impact.
Further, described method includes that following raw material, described percentage are mass percent, and blast furnace melts
Slag accounts for the 63-80% of total raw material quality, and the addition of composition modification agent accounts for the 20-35% of total raw material quality, clear
The addition of clear agent accounts for the 1～2% of total raw material quality；Described composition modification agent is quartz sand, described fining agent
For antimony oxide.
Further, described method includes that following raw material, described percentage are mass percent, and blast furnace melts
Slag accounts for the 63% of total raw material quality, and the addition of composition modification agent accounts for the 35% of total raw material quality, fining agent
Addition account for the 2% of total raw material quality；Described composition modification agent is quartz sand, and described fining agent is three oxygen
Change two antimony.
Further, described method includes following key step:
(1) quenched stirring: blast furnace cinder is transferred in the quenched stirring pool of composition, keeps it when tap cinder mouth
1450～1550 DEG C of temperature ranges, add composition modification agent, inertia of jetting in pond at stirring pool top
Gas, stirs the composition in stirring pool, the blast furnace gas of simultaneously jetting appropriate, coal gas of converter or
Coke-stove gas is to ensure that slag is in 1450～1550 DEG C of high temperature intervals in whipping process；
(2) clarification stirring: slag is entered in slag depositing reservoir by the cinder notch bottom the quenched stirring pool of composition, adds
Entering fining agent makes slag composition uniform with all kinds of impurity in eliminating slag and bubble, stirring；
(3) cinder ladle buffering: slag is entered in cinder ladle by the cinder notch bottom depositing reservoir；
(4) slag water quenching: slag cinder notch from cinder ladle enters water quenching pool, carries out Water Quenching, forms crystallite
Pellet；
(5) drying and grinding: after carrying out the crystallite pellet that step (4) obtains drying grinding, screen out big grain
Footpath crystallite pellet and small particle crystallite pellet；By little crystallite pellet adds foaming agent, stirred by solid
Device stirs so that it is composition is uniform, obtains the crystallite compound that foams；
(6) cloth: foaming crystallite compound is layered cloth on mould with big crystallite pellet；
(7) coring: be warming up to nucleation temperature with the firing rate of 8～15 DEG C/min, nucleation temperature is 700～850
DEG C, nucleation time is 0.5～3h；Preferably, firing rate is 10 DEG C/min；
(8) crystallization: after coring processes, be warming up to crystallization temperature, crystallization temperature with the programming rate of 8～15 DEG C/min
Degree is 900～1150 DEG C, and crystallization time is 0.5～3h；Preferably, programming rate is 10 DEG C/min.
Further, in said method, whole during use mode of heating include flammable blast furnace of jetting
Coal gas, coal gas of converter, coke-stove gas；The type of cooling used includes circulating water, air cooling.
Further, in said method, slag is in quenched stirring and clarification whipping process, and temperature keeps
At 1540-1550 DEG C；Nucleation temperature is 850 DEG C, and nucleation time is 1h；Crystallization temperature is 1150 DEG C, brilliant
The change time is 1h.
Further, the slag temperature when entering water quenching pool is more than 1350 DEG C.
Further, in said method, described mould is fire resistance hollow plate, the fire-resistant fibre in one layer of its upper berth
Dimension paper, makes required form with refractory brick.
Further, in said method, during cloth, crystallite pellet is spread to mould by distributing device,
Spreading three layers, the big particle diameter crystallite pellet that ground floor and third layer paving step (4) obtain is (the purest micro-
Crystal glass pellet), the foaming crystallite compound that second layer paving step (5) obtains, the grain of little crystallite pellet
Degree is 200～325 mesh, and the granularity of big crystallite pellet is 10～100 mesh.
The thickness of above-mentioned three layers can need cloth according to client, and such as, the thickness of the second layer is 20mm, the
One layer is respectively 5mm with the thickness of third layer.
Further, in said method, the time of quenched stirring is 1 hour, described clarification stirring and slag
The time of bag buffering is 1 hour.
The present invention also provide for a kind of utilize blast furnace cinder produce foam pyroceram sheet material equipment, described in set
Standby include: quenched stirring pool, clarification stirring pool (abbreviation depositing reservoir), cinder ladle, water quenching pool, drying machine,
Grinder, distributing device (or material distributing machine), heat-treatment furnace.
Further, described equipment also includes cutting machine and polishing machine etc..
In the above-mentioned equipment preparing foam pyroceram sheet material:
(1) quenched stirring pool: composition modification agent is added in quenched stirring pool, blast furnace cinder is adjusted
Matter, top blast inert gas is stirred, and by-product gas heating and thermal insulation of jetting；
(2) clarification stirring pool: fining agent is added in clarification stirring pool, the raw material of fining molten, top blast
Inert gas is stirred, and by-product gas heating and thermal insulation of jetting；
(3) cinder ladle: by the uniform fused raw material of composition after quenched clarification, be stored in cinder ladle, under cinder ladle
Having lower cinder notch, cinder ladle is placed on cinder ladle panoramic table, can ensure continuous shrend, and shape by cinder ladle panoramic table
Become a buffering area；
(4) water quenching pool: the temperature slag more than 1350 DEG C flows in water quenching pool by the lower cinder notch of cinder ladle,
Water quenching pool has water inlet and delivery port, and the water temperature being made water quenching pool by the flow velocity of regulation water will not be too high；
(5) drying machine: the slag through shrend is dried so that glass particle that shrend obtains (or
Be referred to as crystallite pellet) in do not contain moisture；
(6) grinder: the glass particle obtained is crushed, and sieved by screening function therein
Go out suitable crystallite pellet；
(7) material distributing machine: by the qualified uniform cloth of crystallite pellet on refractory slab, first will foaming crystallite mixing
Material cloth is on mould, then by pure devitrified glass material cloth thereon；
(8) heat-treatment furnace: crystallite pellet good for cloth is carried out at the heat such as coring, crystallization in heat-treatment furnace
Reason process, heat-treatment furnace includes coring district, crystallization region；
(9) cutting machine and polishing machine: after the product of shaping cools down, carries out cutting and polishing polishing to it,
Eventually become foam pyroceram sheet material.
Further, the quenched stirring pool of above-mentioned composition has stand-by equipment, is changed by huge revolving platform,
The quenched mixing plant of composition for changing needs to carry out before the use baking process.
Compared with prior art, provided by the present invention utilize blast furnace cinder produce foam pyroceram sheet material
Method there is following beneficial effect.
1, the raw material of traditional mode of production devitrified glass is cold conditions, needs to add during producing devitrified glass
Heat becomes molten state thus consumes substantial amounts of heat, uses blast furnace cinder then can save as raw material
The amount of heat consumed in heating process, and blast furnace cinder can the cost of conservation in a large number, not only
Improve the economic benefit of blast furnace cinder, also make substantial amounts of blast furnace cinder be able to good application and process；
2, this type of devitrified glass product is foam pyroceram sheet material, and it is micro-that on the one hand this product has foam
Crystal glass density is little, light weight, insulation, prevents the performances such as noise, on the other hand has pure crystallite concurrently
Glass be prone to processing polished, the feature that ornamental performance is high, additionally, this type of sheet material is in heat treatment process
Middle foam pyroceram and pure devitrified glass being bonded together, have adhesive property good, intensity is high
Feature；
3, slag composition employs such as mine tailing, Power Plant Ash, flyash, life dirt in a large number during adjusting
The cheap trade waste such as mud, and use waste computer circuit board of mobile phone as additive, for processing
Heavy metal in waste computer circuit board of mobile phone provides a kind of new thinking, thus minimizing is buried and processed
In journey, plurality of heavy metal enters the pollution that soil and groundwater produces, and improves value-added content of product, is to follow
Ring economy, it is possible to realize the doulbe-sides' victory of economic benefit and environmental benefit.
Accompanying drawing explanation
Fig. 1 is that the blast furnace cinder that utilizes that the present invention provides produces the process chart of foam pyroceram sheet material；
Fig. 2 is that the blast furnace cinder that utilizes that the present invention provides produces the process equipment figure of foam pyroceram sheet material.
Detailed description of the invention
Below in conjunction with embodiment and Figure of description, technical scheme is described in detail.
As it is shown in figure 1, the technique utilizing blast furnace cinder to produce foam pyroceram sheet material that the present invention provides
Flow process includes: blast furnace cinder forms glass after quenched stirring, clarification stirring, cinder ladle buffering, shrend
Glass particle, by drying and grinding, cloth, coring, crystallization, cools down, forms foam pyroceram, after
Cleaved polishing obtains foam pyroceram finished product.
As in figure 2 it is shown, the blast furnace cinder that utilizes that the present invention provides produces the equipment of foam pyroceram sheet material
Including: quenched stirring pool 1, clarification stirring pool 2, cinder ladle 3, water quenching pool 4, drying machine 5, grinder 6,
Distributing device (or material distributing machine) 7, heat-treatment furnace 8, cutting machine 9, polishing machine 10.
In the above-mentioned equipment preparing foam pyroceram sheet material:
(1) quenched stirring pool 1: composition modification agent is added quenched stirring pool by modification agent funnel 101
In, blast furnace cinder is carried out quenched, is stirred by top blast stirring rifle 102 top blast inert gas, and
Jetted by-product gas heating and thermal insulation by heated by gas rifle 103；
(2) clarification stirring pool 2: being added in clarification stirring pool by funnel 201 by fining agent, clarification is molten
Melt raw material, be stirred by top blast stirring rifle 202 top blast inert gas, and by heated by gas rifle 203
Winding-up by-product gas heating and thermal insulation；
(3) cinder ladle 3: by the uniform fused raw material of composition after quenched clarification, be stored in cinder ladle, cinder ladle
Under have lower cinder notch 301, cinder ladle is placed on cinder ladle panoramic table 302, can ensure continuous water by cinder ladle panoramic table
Quench, and form a buffering area；
(4) water quenching pool 4: the temperature slag more than 1350 DEG C flows into shrend by the lower cinder notch 301 of cinder ladle
In pond 4, water quenching pool has water inlet 401 and delivery port 402, makes water quenching pool by the flow velocity of regulation water
Water temperature will not be too high；
(5) drying machine 5: the slag through shrend is dried so that the glass particle that shrend obtains
(or referred to as crystallite pellet) does not contains moisture；
(6) grinder 6: the glass particle obtained is crushed, and sieved by screening function therein
Separate suitable crystallite pellet；
(7) material distributing machine 7: by the qualified uniform cloth of crystallite pellet on refractory slab, first foaming crystallite is mixed
Close material cloth on mould, then by pure devitrified glass material cloth thereon；
(8) heat-treatment furnace 8 is for coring, crystallization；
(9) cutting machine 9 and polishing machine 10: after the product of shaping cools down, it is carried out cutting and polishing
Polishing, eventually becomes foam pyroceram sheet material.
Example below uses the blast furnace cinder that certain steel plant produces as main material, add different one-tenth
Divide modification agent, fining agent so that the foam pyroceram sheet material produced has different performances.
In example below, the method provided according to the present invention prepares foam pyroceram sheet material, during cloth,
By crystallite pellet by, on distributing device paving to mould, spreading three layers, ground floor and third layer paving step (4) obtain
The big particle diameter crystallite pellet (the purest devitrified glass pellet) arrived, second layer paving step (5) obtains
Foaming crystallite compound, the granularity of little crystallite pellet is 200～325 mesh, and the granularity of big crystallite pellet is
10～100 mesh.The thickness of the above-mentioned second layer is that the thickness of 20mm, ground floor and third layer is respectively 5mm.
Table 1 gives the one-tenth of the blast furnace cinder that embodiment of the present invention 1-8 is used and is grouped into.
Table 2 gives the performance test results of product obtained by embodiment of the present invention 1-8.
The one-tenth of the blast furnace cinder used in table 1 embodiment 1-8 is grouped into
The present invention given below use blast furnace cinder produce the concrete enforcement of foam pyroceram sheet material
Example.
Embodiment 1
What the present embodiment provided utilizes the method for blast furnace cinder production foam pyroceram sheet material to include following step
Rapid:
(1) the 1450-1550 DEG C of slag flowed out by blast furnace is transferred to composition tune by mixed iron blast heating and thermal insulation
In matter stirring pool；The addition of blast furnace cinder is 40%；
(2) being added to the quenched stirring pool of composition by composition modification agent, composition is mixed by top blast inert gas
Uniformly, and iron and steel byproduct coal gas of jetting, make slag be incubated at 1450～1500 DEG C of interval 1h；Modification agent
Being quartz sand, addition is 55%；
(3) slag enters in slag depositing reservoir by the cinder notch bottom the quenched stirring pool of composition, adds clarification
Agent is to get rid of all kinds of impurity in slag and bubble so that it is composition is uniform, and iron and steel byproduct coal gas of jetting,
Slag is made to be incubated at 1450～1500 DEG C；Fining agent is antimony oxide, and addition is 5%；Colouring agent adds
Dosage is 0；
(4) slag enters in cinder ladle by the cinder notch bottom depositing reservoir, and the flow of regulation slag, from cinder ladle
The cinder notch of lower section enters water quenching pool, carries out Water Quenching, forms crystallite pellet；
(5), after the glass particle after shrend carries out drying grinding, big particle diameter crystallite pellet and granule are screened out
Footpath crystallite pellet；
(6) successively by glass dust (small particle crystallite pellet) and glass particle (big particle diameter crystallite pellet)
By on distributing device place Min layers to mould, enter coring district immediately, in coring district, with adding of 8 DEG C/min
Thermal velocity is warming up to 850 DEG C, and is incubated 0.5h；
(7), after coring processes, enter crystallization region, be warming up to 1100 DEG C also with the programming rate of 8 DEG C/min
Insulation 2h；
(8) going out crystallization region, be cooled to less than 100 DEG C according to 10 DEG C/min cooling velocity, air cooling is produced
Product, cut qualified product, and surface carries out sanding and polishing, obtain finished foam microcrystal glass plate
Material.
Result: the product devitrified glass principal crystalline phase obtained is wollastonite, uneven owing to not adding foaming agent pore
Even.The main performance testing results of finished foam crystallizing glass sheet material is shown in Table 2.
Embodiment 2
The blast furnace cinder that the present invention provides is produced the method for foam pyroceram sheet material and is comprised the steps:
(1) the 1450-1550 DEG C of slag flowed out by blast furnace is transferred to composition tune by mixed iron blast heating and thermal insulation
In matter stirring pool；The addition of slag is 80%；
(2) being added to the quenched stirring pool of composition by composition modification agent, composition is mixed by top blast inert gas
Uniformly, and iron and steel byproduct coal gas of jetting, make slag be incubated at 1500～1550 DEG C of interval 1h；Modification agent
Being quartz sand, addition is 15%；
(3) slag enters in slag depositing reservoir by the cinder notch bottom the quenched stirring pool of composition, adds clarification
Agent is to get rid of all kinds of impurity in slag and bubble so that it is composition is uniform, and iron and steel byproduct coal gas of jetting,
Slag is made to be incubated at 1500～1550 DEG C；Fining agent is nitrate, and addition is 5%；Color additive
It is 0；
(4) slag enters the flow regulating slag in cinder ladle by the cinder notch bottom depositing reservoir, from cinder ladle
The cinder notch in portion enters water quenching pool, carries out Water Quenching, forms crystallite pellet；
(5), after the crystallite pellet after shrend carries out drying grinding, big particle diameter crystallite pellet and granule are screened out
Footpath crystallite pellet；
(6) in small particle crystallite pellet, addition accounts for the foaming agent of small particle crystallite pellet mass 5%
Na2CO3, stirred by solid agitator so that it is composition is uniform, obtain the crystallite compound that foams；
(7) successively big particle diameter crystallite pellet and foaming crystallite compound are passed through distributing device place Min layers to mould
On, enter coring district immediately, in coring district, be warming up to 700 DEG C with the firing rate of 15 DEG C/min,
And it is incubated 3h；
(8), after coring processes, enter crystallization region, be warming up to 1150 DEG C with the programming rate of 15 DEG C/min
And it is incubated 0.5h；
(9) going out crystallization region, be cooled to less than 100 DEG C according to 5 DEG C/min cooling velocity, air cooling is produced
Product, cut qualified product, and surface carries out sanding and polishing, obtain finished foam microcrystal glass plate
Material.
Wherein: embodiment 2 uses Na2CO3Foaming agent, the product principal crystalline phase obtained is wollastonite.
The main performance testing results of finished foam crystallizing glass sheet material is shown in Table 2.
Embodiment 3
The blast furnace cinder that the present embodiment provides is produced the method for foam pyroceram sheet material and is comprised the following steps:
(1) slag of about 1500 DEG C flowed out by blast furnace is transferred to composition tune by mixed iron blast heating and thermal insulation
In matter stirring pool；The addition of slag is 60%；
(2) being added to the quenched stirring pool of composition by composition modification agent, composition is mixed by top blast inert gas
Uniformly, and iron and steel byproduct coal gas of jetting, make slag be incubated at 1450～1500 DEG C of interval 1h；Modification agent
For kaolin, addition is 39.8%；
(3) slag enters in slag depositing reservoir by the cinder notch bottom the quenched stirring pool of composition, adds clarification
Agent is to get rid of all kinds of impurity in slag and bubble so that it is composition is uniform, and iron and steel byproduct coal gas of jetting,
Slag is made to be incubated at 1450～1500 DEG C；Fining agent is sulfate of ammoniac, and addition is 0.2%；Colouring agent adds
Amount is 0；
(4) slag enters the flow regulating slag in cinder ladle by the cinder notch bottom depositing reservoir, from cinder ladle
Cinder notch enter water quenching pool, carry out Water Quenching, form crystallite pellet；
(5), after the crystallite pellet after shrend carries out drying grinding, qualified glass dust (small particle is screened out
Crystallite pellet) and glass particle (big particle diameter crystallite pellet)；
(6) in small particle crystallite pellet, addition accounts for the foaming agent of small particle crystallite pellet mass 5%
CaCO3, stirred by solid agitator so that it is composition is uniform, obtain the crystallite compound that foams；
(7) successively big particle diameter crystallite pellet and foaming crystallite compound are passed through distributing device place Min layers to mould
On, enter coring district immediately, in coring district, be warming up to 800 DEG C with the firing rate of 12 DEG C/min,
And it is incubated 1.5h；
(8), after coring processes, enter crystallization region, be warming up to 900 DEG C also with the programming rate of 10 DEG C/min
Insulation 3h；
(9) going out crystallization region, be cooled to less than 100 DEG C according to 10 DEG C/min cooling velocity, air cooling is produced
Product, cut qualified product, and surface carries out sanding and polishing, obtain finished foam microcrystal glass plate
Material.
Wherein: embodiment 3 uses CaCO3Foaming agent, the product principal crystalline phase obtained is wollastonite.
The main performance testing results of finished foam crystallizing glass sheet material is shown in Table 2.
Embodiment 4
The blast furnace cinder that the present embodiment provides is produced foam pyroceram sheet material and is comprised the following steps:
(1) slag of about 1500 DEG C flowed out by blast furnace is transferred to composition tune by mixed iron blast heating and thermal insulation
In matter stirring pool；The addition of slag is 78%.
(2) being added to the quenched stirring pool of composition by composition modification agent, composition is mixed by top blast inert gas
Uniformly, and iron and steel byproduct coal gas of jetting, make slag be incubated at 1450～1500 DEG C of interval 1h；Modification agent
Being potassium feldspar, addition is 20%.
(3) slag enters in slag depositing reservoir by the cinder notch bottom the quenched stirring pool of composition, adds clarification
Agent is to get rid of all kinds of impurity in slag and bubble so that it is composition is uniform, and iron and steel byproduct coal gas of jetting,
Slag is made to be incubated at 1450～1500 DEG C；Fining agent is saltcake, and addition is 2%；Color additive is
0；
(4) slag enters the flow regulating slag in cinder ladle by the cinder notch bottom depositing reservoir, from cinder ladle
Cinder notch enter water quenching pool, carry out Water Quenching, form glass particle；
(5), after the glass particle after shrend carries out drying grinding, qualified glass dust and glass are screened out
Grain；
(6) in glass dust, addition accounts for the foaming agent MgCO of glass dust quality 5%3, by solid agitator
Stirring so that it is composition is uniform, obtains the crystallite compound that foams；
(7) foaming crystallite compound and glass particle are successively by distributing device place Min layers to mould, immediately
Enter coring district, in coring district, be warming up to 700 DEG C with the firing rate of 11 DEG C/min, and be incubated 3h；
(8), after coring processes, enter crystallization region, be warming up to 900 DEG C also with the programming rate of 11 DEG C/min
Insulation 3h；
(9) going out crystallization region, be cooled to less than 100 DEG C according to 6 DEG C/min cooling velocity, air cooling is produced
Product, cut qualified product, and surface carries out sanding and polishing, obtain finished foam microcrystal glass plate
Sheet material.
Wherein: embodiment 4 uses MgCO3Foaming agent, the product principal crystalline phase obtained is wollastonite.
The main performance testing results of finished foam crystallizing glass sheet material is shown in Table 2.
Embodiment 5
The blast furnace cinder that the present embodiment provides is produced the method for foam pyroceram sheet material and is comprised the following steps:
(1) slag of about 1500 DEG C flowed out by blast furnace is transferred to composition tune by mixed iron blast heating and thermal insulation
In matter stirring pool；The addition of slag is 69%；
(2) being added to the quenched stirring pool of composition by composition modification agent, composition is mixed by top blast inert gas
Uniformly, and iron and steel byproduct coal gas of jetting, make slag be incubated at 1450～1500 DEG C of interval 1h；Modification agent
For kaolin, addition is 30%；
(3) slag enters in slag depositing reservoir by the cinder notch bottom the quenched stirring pool of composition, adds clarification
Agent is to get rid of all kinds of impurity in slag and bubble so that it is composition is uniform, and iron and steel byproduct coal gas of jetting,
Slag is made to be incubated at 1450～1500 DEG C；Fining agent is sodium nitrate, and addition is 1%；Color additive
It is 0；
(4) slag enters the flow regulating slag in cinder ladle by the cinder notch bottom depositing reservoir, from cinder ladle
Cinder notch enter water quenching pool, carry out Water Quenching, form crystallite pellet；
(5), after the crystallite pellet after shrend carries out drying grinding, qualified glass dust (small particle is screened out
Crystallite pellet) and glass particle (big particle diameter crystallite pellet)；
(6) glass dust adds the foaming agent SiC of 2%, is stirred by solid agitator so that it is composition is equal
Even, obtain the crystallite compound that foams；
(7) successively big particle diameter crystallite pellet and foaming crystallite compound are passed through distributing device place Min layers to mould
On, enter coring district immediately, in coring district, be warming up to 850 DEG C with the firing rate of 10 DEG C/min,
And it is incubated 0.5h；
(8), after coring processes, enter crystallization region, be warming up to 1150 DEG C also with the programming rate of 8 DEG C/min
Insulation 0.5h；
(9) going out crystallization region, be cooled to less than 100 DEG C according to 10 DEG C/min cooling velocity, air cooling is produced
Product, cut qualified product, and surface carries out sanding and polishing, obtain finished foam microcrystal glass plate
Material.
Wherein: using SiC foaming agent in embodiment 3, the product principal crystalline phase obtained is wollastonite.
The main performance testing results of finished foam crystallizing glass sheet material is shown in Table 2.
Embodiment 6
The blast furnace cinder that the present embodiment provides is produced the method for foam pyroceram sheet material and is comprised the following steps:
(1) slag of about 1500 DEG C flowed out by blast furnace is transferred to composition tune by mixed iron blast heating and thermal insulation
In matter stirring pool；The addition of slag is 63%；
(2) being added to the quenched stirring pool of composition by composition modification agent, composition is mixed by top blast inert gas
Uniformly, and iron and steel byproduct coal gas of jetting, make slag be incubated at 1450～1500 DEG C of interval 1h；Modification agent
For blast furnace titaniferous slag, addition is 35%；
(3) slag enters in slag depositing reservoir by the cinder notch bottom the quenched stirring pool of composition, adds clarification
Agent is to get rid of all kinds of impurity in slag and bubble so that it is composition is uniform, and iron and steel byproduct coal gas of jetting,
Slag is made to be incubated at 1450～1500 DEG C；Fining agent is fluorite (CaF2), addition is 2%；Colouring agent adds
Dosage is 0；
(4) slag enters the flow regulating slag in cinder ladle by the cinder notch bottom depositing reservoir, from cinder ladle
Cinder notch enter water quenching pool, carry out Water Quenching, form crystallite pellet；
(5), after the crystallite pellet after shrend carries out drying grinding, qualified glass dust (small particle is screened out
Crystallite pellet) and glass particle (big particle diameter crystallite pellet)；
(6) glass dust adds foaming agent 5%MnO2, stirred by solid agitator so that it is composition is equal
Even, obtain the crystallite compound that foams；
(7) successively big particle diameter crystallite pellet and foaming crystallite compound are passed through distributing device place Min layers to mould
On, enter coring district immediately, in coring district, be warming up to 800 DEG C with the firing rate of 15 DEG C/min,
And it is incubated 1.5h；
(8), after coring processes, enter crystallization region, be warming up to 1000 DEG C with the programming rate of 10 DEG C/min
And it is incubated 1.5h；
(9) going out crystallization region, be cooled to less than 100 DEG C according to 10 DEG C/min cooling velocity, air cooling is produced
Product, cut qualified product, and surface carries out sanding and polishing, obtain finished foam microcrystal glass plate
Material.
Wherein: embodiment 3 uses MnO2Foaming agent, the product principal crystalline phase obtained is wollastonite.
The main performance testing results of finished foam crystallizing glass sheet material is shown in Table 2.
Embodiment 7
The blast furnace cinder that the present embodiment provides is produced the method for foam pyroceram sheet material and is comprised the following steps:
(1) slag of about 1500 DEG C flowed out by blast furnace is transferred to composition tune by mixed iron blast heating and thermal insulation
In matter stirring pool；The addition of slag is 63%；
(2) being added to the quenched stirring pool of composition by composition modification agent, composition is mixed by top blast inert gas
Uniformly, and iron and steel byproduct coal gas of jetting, make slag be incubated at 1540～1550 DEG C of interval 1h；Modification agent
For quartz sand, addition is 35%；
(3) slag enters in slag depositing reservoir by the cinder notch bottom the quenched stirring pool of composition, adds clarification
Agent is to get rid of all kinds of impurity in slag and bubble so that it is composition is uniform, and iron and steel byproduct coal gas of jetting,
Slag is made to be incubated at 1540～1550 DEG C；Fining agent is antimony oxide (Sb2O3), addition is 2%；
Color additive is 0；
(4) slag enters the flow regulating slag in cinder ladle by the cinder notch bottom depositing reservoir, from cinder ladle
Cinder notch enter water quenching pool, carry out Water Quenching, form crystallite pellet；
(5), after the crystallite pellet after shrend carries out drying grinding, qualified glass dust (small particle is screened out
Crystallite pellet) and glass particle (big particle diameter crystallite pellet)；
(6) in glass dust, addition accounts for the foaming agent carbon dust of glass dust quality 5%, is stirred by solid agitator
Mix so that it is composition is uniform, obtain the crystallite compound that foams；
(7) successively big particle diameter crystallite pellet and foaming crystallite compound are passed through distributing device place Min layers to mould
On, enter coring district immediately, in coring district, be warming up to 850 DEG C with the firing rate of 10 DEG C/min,
And it is incubated 1h；
(8), after coring processes, enter crystallization region, be warming up to 1150 DEG C with the programming rate of 10 DEG C/min
And it is incubated 1h；
(9) going out crystallization region, be cooled to less than 100 DEG C according to 10 DEG C/min cooling velocity, air cooling is produced
Product, cut qualified product, and surface carries out sanding and polishing, obtain finished foam microcrystal glass plate
Material.
Using carbon dust foaming agent in embodiment 7, the product principal crystalline phase obtained is wollastonite.
The main performance testing results of finished foam crystallizing glass sheet material is shown in Table 2.
Embodiment 8
The method that blast furnace cinder produces foam pyroceram sheet material as described in Example 7, except for the difference that,
Wherein, nucleation temperature is 800 DEG C.Crystallization temperature is 1100 DEG C.
Fire resistance rating in table 2 determines according to " Code for fire protection design of buildings ".
The foam pyroceram sheet material main performance testing result that table 2 embodiment of the present invention provides
| Project | Density | Thermal conductivity factor | Rupture strength | Fire resistance rating | Water absorption rate |
| Unit | Kg/m3 | W/(m·k) | MPa | - | % |
| Qualified index | 200～400 | ≤0.10 | ≥3.6 | A1 level | ≤5 |
| Embodiment 1 | 353 | 0.08 | 4.4 | A1 level | ≤5 |
| Embodiment 2 | 292 | 0.07 | 5 | A1 level | ≤5 |
| Embodiment 3 | 291 | 0.06 | 5.3 | A1 level | ≤4 |
| Embodiment 4 | 280 | 0.05 | 3.9 | A1 level | ≤4 |
| Embodiment 5 | 281 | 0.07 | 4.2 | A1 level | ≤4 |
| Embodiment 6 | 282 | 0.06 | 3.9 | A1 level | ≤4 |
| Embodiment 7 | 253 | 0.04 | 6.9 | A1 level | ≤2 |
| Embodiment 8 | 279 | 0.07 | 3.9 | A1 level | ≤5 |
Can be drawn by above-described embodiment and test result, use blast furnace cinder micro-directly as producing foaming
The raw material of crystal glass is possible not only to reduce the heat consumption melting raw material in a large number, utilizes steel in heat treatment process
The by-product gas that iron enterprise produces, the component content simultaneously for raw material blast furnace cinder is not strict with,
Show that the blast furnace cinder that existing steel plant of China produce is used equally to produce, it is possible to add substantial amounts of solid
Waste material, thus reach the purpose becoming " giving up " into treasured, not only reduce raw materials for production cost, and
And improve circular biological economic benefit.
The above, only presently preferred embodiments of the present invention, it is not intended to limit the protection of the present invention
Scope.Every impartial change done according to present invention and modification, be encompassed by the patent of the present invention
In the range of.
Claims (5)
1. one kind utilizes the method that blast furnace cinder produces foam pyroceram sheet material, it is characterized in that, described method includes following raw material, percentage is mass percent, blast furnace cinder accounts for the 63% of total raw material quality, the addition of composition modification agent accounts for the 35% of total raw material quality, and the addition of fining agent accounts for the 2% of total raw material quality；Described composition modification agent is quartz sand, and described fining agent is antimony oxide；Color additive accounts for the 0% of total raw material quality；The blast furnace cinder used includes following compositions: SiO2Being 34%, CaO is 37%, and MgO is 11%, Al2O3Being 10%, FeO is 3%, and MnO is 2%, K2O is 0.5%, Na2O is 0.5%, and other composition is 2%；
Described method includes following key step:
(1) quenched stirring: blast furnace cinder is transferred in the quenched stirring pool of composition, adds composition modification agent, and slag is in 1540～1550 DEG C of high temperature intervals；
(2) clarification stirring: slag enters in slag depositing reservoir by the cinder notch bottom the quenched stirring pool of composition, adds fining agent, and stirring makes its composition uniform；
(3) cinder ladle buffering: slag is entered in cinder ladle by the cinder notch bottom depositing reservoir；
(4) slag water quenching: slag cinder notch from cinder ladle enters water quenching pool, carries out Water Quenching, forms crystallite pellet；
(5) drying and grinding: after carrying out the crystallite pellet that step (4) obtains drying grinding, screen out big particle diameter crystallite pellet and small particle crystallite pellet；By little crystallite pellet adds foaming agent, stirred by solid agitator so that it is composition is uniform, obtain the crystallite compound that foams；
(6) cloth: foaming crystallite compound is layered cloth on mould with big crystallite pellet；
(7) coring: nucleation temperature is 850 DEG C, nucleation time is 1h；
(8) crystallization: crystallization temperature is 1150 DEG C, crystallization time is 1h；
(9) cooling: product step (8) obtained, is cooled to less than 100 DEG C, and air cooling obtains foam pyroceram sheet material.
The method utilizing blast furnace cinder to produce foam pyroceram sheet material the most according to claim 1, it is characterised in that the foaming agent of use includes: urea, starch, carbon dust, Na2CO3、K2CO3、SiC、CaCO3、 MnO2、(NH4)2CO3Or composite foamable agent, the addition of foaming agent is the 0.1-10% of little crystallite pellet mass, and the granularity of foaming agent is 100～200 mesh.
The method utilizing blast furnace cinder to produce foam pyroceram sheet material the most according to claim 1, it is characterised in that described foaming agent is carbon dust.
The method utilizing blast furnace cinder to produce foam pyroceram sheet material the most according to claim 1, it is characterized in that, during cloth, by crystallite pellet by distributing device paving to mould, spread three layers, the big particle diameter crystallite pellet that ground floor and third layer paving step (5) obtain, the foaming crystallite compound that second layer paving step (5) obtains, the granularity of little crystallite pellet is 200～325 mesh, and the granularity of big crystallite pellet is 10～100 mesh.
The method utilizing blast furnace cinder to produce foam pyroceram sheet material the most according to claim 1, it is characterised in that the time of quenched stirring is 1 hour, the time of described clarification stirring and cinder ladle buffering is 1 hour.
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| CN110194595A (en) * | 2018-10-24 | 2019-09-03 | 商洛学院 | A kind of technique preparing crystallite foam glass using Shanglou iron tailings |
| CN111517624A (en) * | 2020-05-20 | 2020-08-11 | 武汉科技大学 | Microcrystalline glass prepared from power plant slag and preparation method thereof |
| CN112321178B (en) * | 2020-11-05 | 2022-05-20 | 苏州大学 | Online continuous treatment method for molten titanium-containing blast furnace slag |
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| CN101323503B (en) * | 2008-07-22 | 2010-06-02 | 东北大学 | Method for preparing microcrystalline foamed glass by titanium-containing blast furnace slag |
| CN102060444B (en) * | 2010-11-10 | 2012-09-26 | 内蒙古科技大学 | Foam glass ceramic and preparation method thereof |
| CN102515553A (en) * | 2011-12-13 | 2012-06-27 | 淄博钰晶新型材料科技有限公司 | Method for producing microcrystalline foam thermal-insulation sheet material through utilizing industrial lithium tailings |
| CN102815869B (en) * | 2012-09-05 | 2014-06-25 | 北京盛康宁科技开发有限公司 | Foam microcrystalline glass and preparation method thereof |
| CN102838283B (en) * | 2012-10-11 | 2014-12-17 | 南京师范大学 | Method for producing foam microcrystal glass by utilizing composite industrial residue and product |
| CN103342468B (en) * | 2013-06-28 | 2016-03-09 | 北京晶雅石科技有限公司 | Composite sheet of foam pyroceram and pure devitrified glass and preparation method thereof |
| CN103553337B (en) * | 2013-11-05 | 2015-08-12 | 北京科技大学 | Blast furnace slag produces sintering process method and the equipment thereof of devitrified glass |
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