CN106999884A - Use the gas atomization of the melted material of accessory substance waste gas - Google Patents
Use the gas atomization of the melted material of accessory substance waste gas Download PDFInfo
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- CN106999884A CN106999884A CN201580050666.0A CN201580050666A CN106999884A CN 106999884 A CN106999884 A CN 106999884A CN 201580050666 A CN201580050666 A CN 201580050666A CN 106999884 A CN106999884 A CN 106999884A
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- Prior art keywords
- gas
- waste gas
- melted material
- accessory substance
- partical
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F9/00—Making metallic powder or suspensions thereof
- B22F9/02—Making metallic powder or suspensions thereof using physical processes
- B22F9/06—Making metallic powder or suspensions thereof using physical processes starting from liquid material
- B22F9/08—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying
- B22F9/082—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying atomising using a fluid
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2/00—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic
- B01J2/02—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic by dividing the liquid material into drops, e.g. by spraying, and solidifying the drops
- B01J2/04—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic by dividing the liquid material into drops, e.g. by spraying, and solidifying the drops in a gaseous medium
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D17/00—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
- F27D17/001—Extraction of waste gases, collection of fumes and hoods used therefor
- F27D17/002—Details of the installations, e.g. fume conduits or seals
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F9/00—Making metallic powder or suspensions thereof
- B22F9/02—Making metallic powder or suspensions thereof using physical processes
- B22F9/06—Making metallic powder or suspensions thereof using physical processes starting from liquid material
- B22F9/08—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying
- B22F9/082—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying atomising using a fluid
- B22F2009/0832—Handling of atomising fluid, e.g. heating, cooling, cleaning, recirculating
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/10—Reduction of greenhouse gas [GHG] emissions
Abstract
Metallurgical technology and system for the gas atomization of molten slag and/or molten metal from metallurgical furnace are integrated with waste gas management technique and equipment, so that waste gas infeed to be used for the gas atomization equipment of atomized molten clinker and/or molten metal.Accessory substance waste gas is used for atomized molten clinker and/or molten metal has a variety of advantages, including saves waste gas management and processing equipment, neutralization rise heat is collected by being atomized to increase recuperation of heat, prevents from being atomized the oxidation of partical, and reduces CO2Release.Technique for preparing partical includes：Melted material and accessory substance waste gas are fed into dispersal device；Gas is set to be contacted with melted material in dispersal device, wherein melted material is disperseed and solidified by being contacted with gas, to form partical.
Description
The cross reference of related application
The priority for the U.S. Provisional Patent Application the 62/053,170th submitted for 21st this application claims September in 2014 and
Rights and interests, are included disclosure of which herein by quoting.
Technical field
This disclosure relates to Metal Production technique and facility, more particularly to using accessory substance waste gas with the technique and facility
Such as clinker and/or metal melted material carry out gas atomization.
Background technology
In the facility of the melted material of production such as metal, gas (waste gas or air) is transferred to from a part for technique
Another part, to reach the following first purpose：
(1) waste gas is discharged from process equipment, so as to keep the cleaning of the working environment around process equipment；And/or
(2) in order to process equipment is heated or cooled.
In any of the above-described kind of situation, waste gas：
A particle can) be carried；
B) there can be the composition of wide scope (for example, similar air, not oxygen-containing (to be rich in N2,H2O,CO2), rich in fuel (CO,
H2) or rich in sulphur (SO2))；
C can be cold waste gas or hot waste gas) according to the technique of discharge waste gas.
In all situations, gas used in these techniques or generation required rotated equipment (such as air-introduced machine, drum
Blower fan or compressor) shift or removed from the technique, it is necessary to purchase the slewing to reach this in the process
Purpose.Therefore, most of metallurgical facilities have many this slewings.
In addition, except non-pneumatic is low temperature and cleaning, the gas otherwise produced by metallurgical application must be by waste gas
Processing system is burnt and/or cooling and/or cleaning, and reason is that these byproduct gas are useless.These gas treatment systems
System is expensive, hence in so that the cost of metallurgical extraction device is significantly improved, accounts for the about 30-50% of plant running Capital expenditure.Therefore
Need to reduce or cancel possible waste gas management equipment, while keeping in good factory building working environment and maintaining waste gas to discharge mesh
Mark.
Further, the energy in gaseous by-product is seldom recovered, and reason is that gas is dispersed in whole equipment and temperature
Spend energy regenerating low that economy carries out.Therefore, the chance that low-level heat is reclaimed in smeltery is lost.
Finally, the purposes of the byproduct gas from metallurgical application is not can determine that, and due to the reason, byproduct gas
It is discharged into by above-mentioned expensive exhaust treatment system in air with being wasted, due to lacking heat concentrate and enough
Quality and do not carry out recuperation of heat.
For example, in FeNi smelting furnaces, cooling air is discharged into air without energy regenerating with being wasted；And two grades
Calcine and smog waste gas of slagging tap is discharged into air with being wasted similarly by two grades of dust storage chamber cleaning systems.Due to not sending out
The purposes of these existing byproduct gas, they are at being released to before air and must be carried out with expensive waste gas management equipment
Reason.
Similarly, in FeCr smelteries, rich in CO2Furnace exhaust it is cooled and be lavishly discharged into air, not
Carry out energy regenerating or the property using waste gas.Same, because the purposes of these exhaust gas products is not found, therefore this
A little gases are discharged into air with being wasted by expensive exhaust treatment system, do not carry out value recovery.
In addition, the CO of Metallurgical Factory2Discharge is an environmental problem, and all Metal Production commercial cities are faced with reduction greenhouse gases
The pressure of discharge.Therefore, will be enriched in CO using CO 2 reformation unit2Exhaust gas conversion into hydrogen and carbon monoxide
Mixture (forming gas), it then can be in different technique (such as upstream dryer, calcining furnace, stove or pre-reduction unit)
In be used as fuel.However, for this in thermally favourable reforming process, rich in CO2Gas need be preheated to greater than about
900 DEG C, it means that extra operating cost.
Carbon dioxide is only the example of a discharge gas that can cause environmental concerns.Emission from metallurgical facility
It may include a variety of other undesirable compositions, including be discharged into and can trigger the gas and granular solids of worry in environment.Further,
Equipment and technique that these undesirable compositions usually require costliness are reduced or removed from the waste gas from metallurgical facility.It can wrap
The example for the undesirable gas being contained in the waste gas of metallurgical facility includes CO2, such as SO2、SO3And H2S sulphur-containing substance, it is all
Such as NO and NO2Nitrogen oxides (NOx), phosphorous gas, fluoride (such as HF and SiF4) and/or such as furans He bioxin
Organic substance.The example of undesirable granular solids includes dust, typically required to remove it from waste gas.
Clinker is another accessory substance of progress Metal Production technique in metallurgical furnace.Clinker generally include metal oxide with
The mixture of silica, and the amount of the clinker produced produced for the technique about the 10% of amount of metal to several times.
Molten slag is periodically slagged tap from stove, it is carried out air cooling and solidification, heat losses to environment.
Many clinkers that these techniques are produced constantly are discharged as waste.However, people are in various commercial products recently
Interest is generated using granulated slag, and has developed the equipment and technique of granulation and the processing for clinker, to produce
Such as the proppant in production of hydrocarbons and the pelletized product of covering particle.
Clinker is converted into commonly assigned by the promising technique of especially tool and equipment of partical by gas atomization
The U.S. Provisional Patent Application No.62/007,180 and U.S. Provisional Patent Application No.62/ that are submitted on June 3rd, 2014
007,284 is disclosed.According to disclosed technique, gas atomization of the molten slag from stove through use environment air is straight
Connect and be economically converted into a variety of particals, the surrounding air is fed into atomising device through conventional air-blaster.
But still need the equipment of simpler and more economical technique to handle the accessory substance of such as clinker and waste gas, with
Alleviate at least one of above mentioned problem.
Summary of the invention
In one embodiment there is provided a kind of method for preparing partical, it includes:(a) melting material is provided
Material；(b) melted material is fed into dispersal device；(c) gas is fed into dispersal device, wherein, gas is accessory substance waste gas；(d)
Gas is set to be contacted with melted material in dispersal device, wherein melted material is disperseed and solidified by being contacted with gas, with
Form the partical.
In another embodiment there is provided the system for preparing partical, it includes:(a) accommodate selected from one kind
Or the metallurgical furnace of the melted material of a variety of molten metals and molten slag；(b) it is located proximate to the gas atomization equipment of metallurgical furnace；
(c) it is used for the gas supply system that accessory substance waste gas is provided to gas atomization equipment；(d) it is used to turn melted material from metallurgical furnace
It is transported to the melted material feed system of gas atomization equipment.
The brief description of accompanying drawing
Only described in an illustrative manner in the present invention, accompanying drawing now with reference to accompanying drawing：
Fig. 1 is a part for the flow chart of the technique of the first embodiment according to this paper；And
Fig. 2 is a part for the flow chart of the technique of the second embodiment according to this paper.
Detailed description of the invention
The following is the detailed description of metallurgical technology and facility, it includes being used for the gas of molten slag and/or molten metal
The technique and equipment of atomization, and wherein incorporate at least one waste gas management technique and at least one gas atomization technique and
The equipment related to these techniques.
The inventors discovered that the byproduct gas from metallurgical technology can be used for the gas of clinker and metal from metallurgical furnace
Body is atomized, to bring one or more advantages below：
A. waste gas management equipment is saved, exhaust-gas treatment facilities, which are focused on, only to be needed to carry out molten slag and/or molten metal
Atomization part.
B. stove, metal are saved to slag tap (tapping), calcine transfer, dust control, equipment blower fan is reduced.On the contrary, atomization wind
Machine can discharge gas from these techniques and be used to them be atomized.
C. compared with using the system of air atomizing clinker and/or metal, save with being slagged tap using stove, metal, calcining turns
Move, the related operation expenditure of dust control reduces equipment wind blower fan.
D. the hot concentration from above-mentioned technique, and improve the heat to provide more by clinker and/or metal atomization
Economic clinker and molten metal hot (energy) are reclaimed.
E. the waste gas (relative to the air with lower temperature) with high temperature, the processing unit for needing heat are produced
(drying unit, water preheating etc.).
F. the exhaust treatment system related with being atomized to granulating and Capital expenditure are saved, because high-temp waste gas can be
Recycled in the technique for having been equipped with this equipment.Specific example is in FeNi rotary kiln types electric furnace (RKEF) equipment
Dry.
G. metal or clinker are atomized pelletization or powder using inert gas, to prevent their oxidation.
H. with existing clinker is broken, sorting and screening operation are compared with the metal recovery efficiency improved, and reduction
Or save the use of this accessory substance equipment for after-treatment.
If being I. rich in CO using from the technique2Waste gas be atomized：A) a part of carbon containing gaseous material can
It is dissolved in melted material (because scattered can increase specific surface area, so as to strengthen dissolving)；And B) it is rich in CO2The temperature of gas will
Increase due to being contacted with melted material, this is conducive to less preheating or without any reforming process additionally preheated.
It is appreciated that above-mentioned advantage causes compared with prior art there is more significant cost to decline, this causes：
- recovered energy from clinker it is more feasible；
- recovered energy from smelting exhaust gas it is more feasible；
- by the way that the waste gas used at present, clinker and metal working system is reduced or eliminated, smeltery's cost is significantly reduced；
- greenhouse gas emission of smeltery is reduced in more cost effective mode.
Fig. 1 is a part for the flow chart of technique according to the first embodiment of the invention.Flow chart is partly shown
Metalliferous technique and system are given birth to by metallurgical furnace 10, the metallurgical furnace includes multiple electrodes 12, and the electrode is used to provide
Heat is with the generation in furnace chamber and maintains melting metal layer 14 and molten slag layer 16.Fig. 1 shows that stove includes and molten slag
The clinker slag notch 18 of the connection of layer 16 and the molten metal slag notch 20 connected with melting metal layer 14.
Molten slag is discharged periodically by clinker slag notch 18 from stove 10, be directly discharged into removable clinker container or
Clinker chute or running channel (runner), molten slag are therefrom transported to another region of factory.During transport, clinker is maintained at
Molten condition.Conveying of the slag in slag reservoir or chute is represented by the arrow 22 in Fig. 1.
Stove 10 in Fig. 1 is cooled down by air at least in part.More specifically, the bottom wall and lower wall of stove 10 are cold by air
But.In known technique and system, the air of cooling furnace is supplied to stove by blower fan or air blower.However, according to this implementation
The technique and system of mode eliminate this blower fan or air blower.
As being appreciated that, air heating in the bottom wall and side wall of its cooling furnace of cooling furnace.In Fig. 1, from stove
The cooling air stream of the discharge of bottom wall and lower wall is represented by arrow 24 and 26 respectively.In typical technique and system, heating
Cooling air be discharged into air.
Gas atomization equipment 28 is also included with atomized molten clinker according to the system of present embodiment and produced suitable for business
The slag granules of industry product (such as proppant and/or covering particle).Gas atomization equipment 28 is located near metallurgical furnace 10, and such as
Shown in arrow 22, the molten slag from stove 10 is received by clinker container or chute.
Molten slag is atomization in equipment 28 by the air-flow for carrying out self-induced-air (ID) blower fan 30, wherein from ID blower fans 30 to gas
The supply of the atomization gas of body atomization plant 28 is represented by the arrow 32 in Fig. 1.When the air-flow supplied by ID fans 30 is in gas
When the whereabouts stream of molten slag is contacted in the spray chamber of atomization plant 28, molten slag is separated into drop simultaneously and is cooled to solid
State, so as to form the solid slag particle for falling into spray chamber bottom.
In typical install, be input to gas atomization equipment 28 gas be changed to by air-blaster (it is not shown, but
Substitute ID fans), and may include the air in environment temperature and pressure.However, in the technique according to present embodiment and
In system, the waste gas that the gas of ID blower fans 30 includes discharging from furnace hearth wall and/or lower wall, such as arrow 24 and/or 26 are input to
It is shown.The waste gas of this discharge can not be for the air blower that is used in existing air atomization device, because they are hot and unclear
Clean.In the present embodiment, being input to the gas of ID blower fans 30 includes the combined exhaust gas from furnace hearth wall and lower wall, therefore
Fig. 1 shows the arrow 24 and 26 of combination to form arrow 34, and arrow 34 represents to be input to the waste gas of ID blower fans 30.As managed
Solution, the waste gas for being fed to gas atomization equipment 28 by ID blower fans 30 includes the heat extracted from stove, and therefore in height
In the temperature of environment temperature.
According to present embodiment, stove is also drawn air into for the ID blower fans 30 to the supply waste gas of gas atomization equipment 28 cold
But in system.This makes it possible to any blower fan that province's whereabouts stove 10 supplies cooling air, so as to reduce Capital expenditure and run into
This.Make it possible to save the single exhaust treatment system for waste gas in addition, being used to be atomized using waste gas, so as to further drop
Low Capital expenditure and operating cost.
Therefore, in the present embodiment, the air circulation in stove air cooling system is provided by identical ID blower fans 30
With the waste gas circulation for reaching gas atomization equipment.It should be appreciated that ID blower fans 30 can need be not necessarily positioned at stove 10 and gas atomization plant 28
Between, the upstream of stove 10 can be located at, so that cooling air is blown into furnace wall, and the air of heating gas atomization equipment is blown to
28。
In Fig. 1, the solid slag particle produced by gas atomization equipment 28 represents that they set from gas atomization by frame 36
Standby 28 removal is represented by arrow 38.
Waste gas for atomization is discharged by gas atomization equipment 28 in the way of slag granulation waste gas, is represented by frame 40, is given up
Gas is represented from the removal of gas atomization equipment 28 by arrow 42.Waste gas 40 includes the heat extracted from furnace sidewall and bottom wall, and
The heat extracted from molten slag.Therefore, using the waste gas increase discharged from the stove cooling system in gas atomization equipment 28
Heat in waste gas, so as to be used for energy transfer in downstream process equipment.For example, from gas atomization equipment 28
Hot waste gas 40 can therefrom reclaim heat through handling, or it can be fed into other processing units of needs heat, such as dry
Dry unit, water preheating unit etc..These other processing units are represented by frame 44 in the accompanying drawings.
Although above description is related to a kind of embodiment, wherein the waste gas for atomization is the sky from stove cooling system
Gas, and wherein molten slag is the material being atomized, but it is not necessarily such case.For example, Fig. 2 shows to implement according to second
A part for the process chart of mode, wherein waste gas are changed to include to arrange from the inside of stove and/or from flue gas and dust arrestment cover
The waste gas gone out.First and second embodiments have multiple same components, and these same components are attached using identical in fig. 2
Icon is remembered to identify.In addition, unless be hereafter otherwise noted, otherwise the above description of these same components is equally applicable to second in fact
Apply mode.
Fig. 2 embodiment includes metallurgical furnace 10 as described above, in addition to for discharging accessory substance from the inside of stove 10
The waste gas port 50 of waste gas.The furnace exhaust of discharge is represented by the arrow 52 in Fig. 2.In the present embodiment, at least a portion stove
Waste gas may collect in flue gas and dust arrestment cover 54, and be taken out setting to be transported to gas atomization by ID blower fans 30
Standby 28.Therefore, Fig. 2 shows arrow 56,58,34 to represent from flue gas and dust capture cover 54 to the waste gas stream of ID blower fans 30.
At least a portion for the waste gas discharged from stove 10 can be delivered directly to gas atomization equipment 28 by ID blower fans 30,
Rather than collect in cover 54.Therefore, Fig. 2 shows arrow 52,60,58,34 to represent from waste gas port 50 to ID blower fans 30
Waste gas stream.It should be understood that all waste gases or a part of waste gas can be collected in cover before gas atomization equipment 28 is transported to
In 54, and/or all or part of of waste gas directly can be transported to gas atomization equipment (by ID blower fans 30) from stove 10, or
Its any combinations.
Due to the changeability of technique carried out in metallurgical furnace, waste gas can have different compositions, below will be further
Discuss.Regardless of the composition of the waste gas for being atomized, it is emphasized that, an importance of the invention is to use air inducing
Machine 30 come extract waste gas (such as from the inside of stove or the bottom from stove) and by waste gas for atomization.This instead of traditional drum
Blower fan, it, which sucks surrounding air and blows air, is used to be atomized.This improve is applied to all of the embodiments disclosed herein.
Need also exist for, it is emphasized that compared with surrounding air to be used as to the situation of atomization gas, being used to granulate using waste gas
Purpose can make the degree of oxidation of melted material lower.In this respect, waste gas can exhaust oxidizing substance (such as oxygen) or can be with
Substantially free of oxidizing substance.The degree of oxidation depends on the composition of waste gas, but the reduction of oxidation level can be by from system
The various waste gas in interior multiple sources are realized, the waste gas for example gone out from the fire grate in Fig. 2, and it with oxygen depleted and/or be able to can be wrapped
Include one or more gaseous by-products.
Another importance of the present invention is to be used to be atomized by waste gas to cause the rise of waste-gas heat.This is one important
Advantage, wherein need from waste gas reclaim heat or in another processing step for need heat use waste gas, for example,
Dry or hanker in advance, and realized in all of the embodiments disclosed herein.
In certain embodiments, for atomized molten metal or clinker and be fed to the waste gas of gas atomization equipment 28 can
To carry particle.Make it possible to save single exhaust treatment system using method and system as described herein, and as above
Described in literary first and second embodiments, the waste gas for carrying particle is supplied to by gas atomization equipment 28 by ID blower fans 30.
The waste gas from gas atomization equipment 28 is handled as described above.
Another importance of the present invention is that the atomization of metal/clinker can be used rich in CO2Waste gas be used as atomization gas
Body.Therefore, according to this aspect, the atomization of metal/clinker is not only realized by using waste gas, and is reduced simultaneously from equipment
CO2Discharge.CO2Reduction pass through CO2The part CO of dissolving in metal/clinker2Trap to realize.In addition, rich in CO2's
Waste gas is heated in atomization plant, therefore the waste gas from atomization plant is fully warmed-up, so that it can reformed
Directly (or with minimum preheating) is converted into forming gas (CO+H in device2).Therefore, in this aspect of the invention, by the table of frame 44
The other processing units shown include the reformer for being used to produce forming gas.
The atomization of metal/clinker can also be carried out with the waste gas containing one or more other undesirable compositions,
The gas and granular solids of worry can be triggered by being defined herein as including being discharged into when in environment, and be generally had to by waste gas
Processing partially or completely remove.
For example, undesirable composition includes one or two kinds of gases, such as CO2, such as SO2、SO3And H2S sulfur-bearing thing
Matter, such as NO and NO2Nitrogen oxides (NOx), phosphorous gas, fluoride (such as HF and SiF4) and/or such as furans He Er Evil
The organic substance of English (dioxin).The reduction of the concentration of the gas of these in waste gas is such as above for CO2The mode discussed is real
Existing, i.e. by the way that undesirable component is dissolved in into melting gold in the forming process of the partical in materialization equipment
In category/clinker, so that the concentration of the undesirable composition in the hot waste gas of gas atomization equipment, which is less than, is supplied to gas mist
Change the concentration of the undesirable composition in the waste gas of equipment.This can reduce to for removed from waste gas these it is undesirable into
The need for the expensive device and technique divided.
Wherein undesirable composition includes one or more gaseous organic substance matter, and such as furans is He bioxin.This in waste gas
The reduction of the concentration of a little organic substances can be by the organic substance in the presence of the oxygen in the offgas and/or in metal/clinker
Contact with molten metal/clinker realizes organic substance burning.Further, in the forming process of partical, burning
At least a portion of the gas produced by organic substance in gas atomization equipment may be dissolved in molten metal/clinker.Therefore,
When some or all of organic substances burn to form carbon dioxide and water, gas atomization equipment can be further used as after burner.
In the case where undesirable composition includes granular solids (such as dust), the melting gold in gas atomization equipment
In the atomization process of category/clinker, dust granule can be directed in partical.This can be reduced to for being removed from waste gas
The need for the expensive device and technique of dust.
Finally, the invention allows to one or more waste gas streams are pooled in the waste gas from gas atomization equipment.
This can be in reduction system waste gas treatment equipment so that capital and operation expenditure are reduced, and in all realities disclosed herein
The advantage can be realized by applying in mode.
In another embodiment, the molten metal discharged from stove 10 by slag notch 20 can be set by gas atomization
Standby 28 granulation, rather than clinker.In this respect, Fig. 2 includes representing molten metal from slag notch 20 to gas atomization device 28
The dotted line 62 of conveying, wherein molten metal with molten slag exact same way as described above granulate.Implement this
In mode, it should be understood that as shown in arrow 22, clinker is not had and flows to gas atomization device 28.It should also be understood that this modification also may be used
With the process chart applied to Fig. 1, it is related to first embodiment.
The composition for the metal discharged from stove 10 is of course depend upon the specific metallurgical process carried out wherein.For example, in stove
In the case that 10 are ferronickel smelting furnace, the molten metal discharged by scum hole 20 can include iron nickel (FeNi).However, should manage
Solution, method disclosed herein and system are not limited to any specific metallurgical method.For example, method disclosed herein and system are available
In producing the pig iron in blast furnace.
Using heat and/or uncleanly waste gas be used for atomization and may need ID blower fans 30, including with can handle not
The blower fan of the radial blade of cleaning exhaust gas, rather than the fresh air blower with recurvate impeller blade.This is applicable
In all of the embodiments disclosed herein.
In some embodiments, oxygen can be substantially free of by being fed to the waste gas of gas atomization equipment 28.For example, in some realities
Apply in mode, waste gas can be rich in gas, such as N2、H2O or CO2, this will cause to be included in molten slag during being atomized or molten
Melt the metal in metal to be seldom oxidized or not oxidized.For example, the furnace exhaust from FeCr smelting furnaces is rich in CO2, and they
It is probably particularly advantageous in the production of the pig iron or other metals as the purposes of atomization gas, wherein to avoid atomization process
In oxidation.In other embodiments, waste gas can be rich in such as CO or H2Fuel, or can be rich in such as SO2Sulfur-bearing thing
Matter.
Although the present invention has combined some embodiments to be described, the invention is not restricted to these specific implementations
Mode.On the contrary, the present invention includes all embodiments that may be fallen within the scope of the appended claims.
Claims (31)
1. the method for preparing partical, it includes:
(a) melted material is provided；
(b) melted material is fed into dispersal device；
(c) gas is fed into dispersal device, wherein, gas is accessory substance waste gas；
(d) gas is contacted with melted material in dispersal device, wherein melted material by contacted with gas and by scattered and
Solidification, to form the partical.
2. the method for claim 1, wherein the melted material is molten metal or molten slag, the melting gold
Category or molten slag are produced by the metallurgical technology carried out in metallurgical furnace.
3. method as claimed in claim 2, wherein, melted material is molten metal, and wherein, partical includes metal
Grain.
4. method as claimed in claim 2, wherein, melted material is molten slag, and wherein, partical includes clinker
Grain.
5. the method as any one of claim 2-4, it is characterised in that dispersal device includes gas atomization equipment.
6. method as claimed in claim 5, wherein, the dispersal device also includes being used to accessory substance waste gas being blown into scattered dress
Air inducing (ID) blower fan put.
7. method as claimed in claim 6, wherein, accessory substance waste gas includes the gas discharged by stove cooling system, and ID
Blower fan extracts gas from stove cooling system.
8. method as claimed in claim 6, wherein, accessory substance waste gas includes the furnace exhaust inside metallurgical furnace, and ID
Blower fan extracts furnace gases from stove.
9. the method as any one of claim 6-8, wherein, gas atomization equipment produces hot waste gas, and wherein, heat is useless
Gas is used in downstream process equipment, for energy transfer.
10. method as claimed in claim 9, wherein, downstream process equipment includes drying unit or preheating unit.
11. method as claimed in claim 10, wherein, the accessory substance exhaust gases carry particulate for gas atomization equipment.
12. the method as any one of claim 3-11, wherein, the waste gas for gas atomization equipment is substantially free of
Oxygen.
13. the method as any one of claim 1-11, wherein, accessory substance waste gas is substantially free of oxygen and rich in selected from N2、
H2O、CO2、CO、H2And SO2One or more gases.
14. the method as described in claim 12 or 13, wherein, compared with the material being atomized using air, use accessory substance
Waste gas is lower come the degree of oxidation for the melted material being atomized.
15. the method for claim 1, wherein dispersal device includes gas atomization equipment；
Wherein, the gas atomization equipment produces hot waste gas；
Wherein, the waste gas for gas atomization equipment includes undesirable composition；And
Wherein, during partical formation, in the waste gas of gas atomization equipment it is contained it is undesirable into
Divide and contacted with melted material, so that the concentration of undesirable composition is less than in the waste gas for gas atomization equipment in hot waste gas
The concentration of undesirable composition.
16. method as claimed in claim 15, wherein, it is undesirable to composition be gas or granular solids.
17. method as claimed in claim 15, wherein, it is undesirable to composition be CO2, such as SO2、SO3And H2S sulfur-bearing thing
Matter；Selected from NO and NO2Nitrogen oxides, phosphorous gas；Gaseous organic substance matter；Fluoride (such as HF and SiF4), and wherein one
Plant or a variety of combinations；And
Wherein, in the forming process of the partical, it is undesirable at least a portion of composition be dissolved in melted material.
18. method as claimed in claim 16, wherein, the gaseous organic substance matter is selected from furans, bioxin and combinations thereof；And
Wherein, in the forming process of the partical, at least a portion of gaseous organic substance matter is burnt in melted material
And/or dissolving.
19. method as claimed in claim 15, wherein, it is undesirable to composition be granular solids.
20. method as claimed in claim 19, wherein, granular solids are dusts；And wherein, in the forming process of partical
In, dust is imported into partical.
21. method as claimed in claim 15, wherein, it is undesirable to composition be CO2；And wherein, for gas atomization equipment
CO in waste gas2A part be trapped in partical.
22. method as claimed in claim 21, wherein, reformer of the hot waste gas produced by gas atomization equipment in downstream
In be converted to forming gas.
23. the system for preparing partical, it includes:
(a) metallurgical furnace of the melted material selected from one or more molten metals and molten slag is accommodated；
(b) it is located proximate to the gas atomization equipment of metallurgical furnace；
(c) it is used for the gas supply system that accessory substance waste gas is provided to gas atomization equipment；
(d) it is used for the melted material feed system that melted material is transported to gas atomization equipment from metallurgical furnace.
24. system as claimed in claim 23, wherein, melted material includes clinker, and wherein, melted material feed system bag
Include clinker container or chute.
25. the system as described in claim 23 or 24, wherein, the dispersal device also includes being used to accessory substance waste gas being blown into
The ID blower fans of gas atomization device.
26. system as claimed in claim 25, wherein, the system also includes the air cooling system for cooling furnace.
27. system as claimed in claim 26, wherein, accessory substance waste gas includes the air discharged by stove air cooling system,
And wherein, the system also includes the pipeline for being used to being transferred to accessory substance waste gas into gas atomization equipment from stove.
28. the system as any one of claim 23-25, wherein, accessory substance waste gas includes the waste gas discharged by stove, and
Wherein, the system also includes the pipeline for being used to being transferred to accessory substance waste gas into gas atomization equipment from stove.
29. system as claimed in claim 28, the system also includes the smog and ash for being used to collect the waste gas that stove is discharged
Dirt fume trap cover, wherein, pipeline for accessory substance waste gas to be transferred to gas atomization equipment is adjusted to be caught from smog and dust
Collection cover receives waste gas.
30. the system as any one of claim 23-29, wherein, compared with by air-atomized material, by making
The degree of oxidation for the melted material being atomized with accessory substance waste gas is lower.
31. the product as obtained by being atomized waste gas, the product is compared with the same product being atomized by air atomization device, oxygen
Change degree is lower.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US201462053170P | 2014-09-21 | 2014-09-21 | |
| US62/053,170 | 2014-09-21 | ||
| PCT/CA2015/050923 WO2016041092A1 (en) | 2014-09-21 | 2015-09-21 | Gas atomization of molten materials using by-product off-gases |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106999884A true CN106999884A (en) | 2017-08-01 |
Family
ID=55532400
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201580050666.0A Pending CN106999884A (en) | 2014-09-21 | 2015-09-21 | Use the gas atomization of the melted material of accessory substance waste gas |
Country Status (13)
| Country | Link |
|---|---|
| US (1) | US20170297113A1 (en) |
| EP (1) | EP3194063A1 (en) |
| JP (1) | JP2017527770A (en) |
| KR (1) | KR20170060029A (en) |
| CN (1) | CN106999884A (en) |
| AU (1) | AU2015318566A1 (en) |
| BR (1) | BR112017005583A2 (en) |
| CA (1) | CA2961075C (en) |
| CO (1) | CO2017002625A2 (en) |
| DO (1) | DOP2017000074A (en) |
| MX (1) | MX2017003520A (en) |
| RU (1) | RU2017110486A (en) |
| WO (1) | WO2016041092A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109079149A (en) * | 2018-08-30 | 2018-12-25 | 深圳市晶莱新材料科技有限公司 | A kind of method and apparatus producing Fe-Mn-Pt metal powder |
| CN111587296A (en) * | 2017-09-28 | 2020-08-25 | 安赛乐米塔尔公司 | Method for continuously producing solidified steelmaking slag and associated device |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3714970A1 (en) | 2019-03-28 | 2020-09-30 | Catalytic Instruments GmbH & Co. KG | Apparatus for the production of nanoparticles and method for producing nanoparticles |
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Also Published As
| Publication number | Publication date |
|---|---|
| CA2961075C (en) | 2017-07-25 |
| CA2961075A1 (en) | 2016-03-24 |
| KR20170060029A (en) | 2017-05-31 |
| RU2017110486A (en) | 2018-10-01 |
| US20170297113A1 (en) | 2017-10-19 |
| MX2017003520A (en) | 2017-07-28 |
| AU2015318566A1 (en) | 2017-04-06 |
| DOP2017000074A (en) | 2017-04-30 |
| BR112017005583A2 (en) | 2018-01-23 |
| EP3194063A1 (en) | 2017-07-26 |
| JP2017527770A (en) | 2017-09-21 |
| CO2017002625A2 (en) | 2017-06-20 |
| WO2016041092A1 (en) | 2016-03-24 |
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Application publication date: 20170801 |