CN106222451A - The smelting process of antimony concentrate - Google Patents
The smelting process of antimony concentrate Download PDFInfo
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- CN106222451A CN106222451A CN201610665922.3A CN201610665922A CN106222451A CN 106222451 A CN106222451 A CN 106222451A CN 201610665922 A CN201610665922 A CN 201610665922A CN 106222451 A CN106222451 A CN 106222451A
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- antimony
- antimony concentrate
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B30/00—Obtaining antimony, arsenic or bismuth
- C22B30/02—Obtaining antimony
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Abstract
The invention discloses the smelting process of antimony concentrate, including: antimony concentrate is dried process, in order to obtain being dried antimony concentrate；Dry antimony concentrate is carried out ball-milling treatment, in order to obtain antimony concentrate powder；Utilize oxidizing semlting stove that antimony concentrate powder is carried out oxidizing semlting, in order to obtain liquid height antimony slag, wherein, antimony concentrate powder, oxygen-enriched and coal dust are sprayed in molten bath from the sidewall of oxidizing semlting stove, flux is added from the furnace roof of oxidizing semlting stove；Liquid height antimony slag is carried out reduction melting in side-blown reduction stove, in order to obtain liquid antimony and reducing slag.Use the method can complete the oxidizing semlting of antimony concentrate with single step, and then significantly improve antimony concentrate efficiency, reduce energy consumption.
Description
Technical field
The invention belongs to field of metallurgy, specifically, the present invention relates to the smelting process of antimony concentrate.
Background technology
Antimony metallurgy is divided into pyrogenic process and wet method, and in current antimony metallurgical production, fire metallurgy process has comparative advantage, and reaches 95%
Above；And the technological process of " antimony concentrate blast furnace volatile smelting-thick antimony oxide reduction smelting in reverberatory furnace " is current China
The basic technology of overwhelming majority antimony smeltery.Stibium blast furnace volatile smelting technique has that adaptability to raw material is strong, disposal ability is relatively big,
It is prone to mechanically operated advantage, but the special operation condition of " low column, the thin bed of material, high coke yield, High-temperature furnace top " also determines this
It is high to there is energy consumption in technique, and metal recovery rate is low, returns product rate high, the defects such as direct yield is low.
Therefore, current antimony metallurgical technology is still further improved.
Summary of the invention
It is contemplated that one of technical problem solved the most to a certain extent in correlation technique.To this end, the present invention
One purpose is to propose a kind of smelting process with efficient, energy-conservation antimony concentrate and smelting system.
According to an aspect of the present invention, the present invention proposes the smelting process of a kind of antimony concentrate, including:
Antimony concentrate is dried process, in order to obtain being dried antimony concentrate；
Dry antimony concentrate is carried out ball-milling treatment, in order to obtain antimony concentrate powder；
Utilize oxidizing semlting stove that described antimony concentrate powder is carried out oxidizing semlting, in order to obtain liquid height antimony slag, wherein, by institute
State antimony concentrate powder, oxygen-enriched and coal dust sprays in molten bath from the sidewall of described oxidizing semlting stove, by flux from described oxidizing semlting stove
Furnace roof add；
Described liquid height antimony slag is carried out reduction melting in side-blown reduction stove, in order to obtain liquid antimony and reducing slag.
The smelting process of the antimony concentrate of the above embodiment of the present invention, is processed into granule in advance by antimony concentrate, and by antimony concentrate
Powder sprays in the molten bath in oxidizing semlting at a high speed through side-blown spray gun, uses side-blown mode to spray into oxygen-enriched and coal dust simultaneously, carries out oxygen
Change melting, finally carry out reduction melting and obtain liquid antimony.The method uses side-blown mode that antimony concentrate is injected directly into molten bath slag
Direct oxidation melting is carried out in Ceng, the volatile smelting technique of more existing antimony concentrate, eliminate volatilisation step, a step can realize antimony essence
The smelting in ore deposit.This method avoid the volatilization carrying out antimony concentrate, operating environment is more friendly, and efficiency is high.The method is beaten
Break the constraint of traditional antimony concentrate smelting process, a kind of method opening brand-new single step smelting antimony concentrate.The method can
To significantly improve antimony concentrate efficiency and antimony recovery.
It addition, the smelting process of antimony concentrate according to the above embodiment of the present invention can also have following additional technology spy
Levy:
In some embodiments of the invention, the mean diameter of described antimony concentrate powder is 40-500 micron, preferably 75-150
Micron.
In some embodiments of the invention, use immersion side-blown spray gun that described antimony concentrate powder is sprayed into described oxidation to melt
Slag blanket bottom, molten bath in furnace.
In some embodiments of the invention, the thickness of described slag blanket is 0.5-1.5 rice.
In some embodiments of the invention, use drawable type spray gun will described oxygen-enriched with coal dust from described oxidizing semlting stove
Sidewall spray in molten bath, wherein, the inner nozzle Coal powder spray of described drawable type spray gun, outer nozzle spray oxygen-enriched.
In some embodiments of the invention, the spray spraying into position and described antimony concentrate powder of described oxygen-enriched and described coal dust
Enter position not in same level.
In some embodiments of the invention, the position that sprays into of described oxygen-enriched and described coal dust is less than described antimony concentrate powder
Spray into position.
Accompanying drawing explanation
Fig. 1 is the flow chart of the smelting process of antimony concentrate according to an embodiment of the invention.
Fig. 2 is the structural representation of the system of the smelting process implementing antimony concentrate according to an embodiment of the invention.
Fig. 3 be the smelting process implementing antimony concentrate according to an embodiment of the invention system in the smelting of oxidizing semlting stove
The schematic diagram of antimony regulus concentrate.
Detailed description of the invention
Embodiments of the invention are described below in detail, and the example of described embodiment is shown in the drawings, the most from start to finish
Same or similar label represents same or similar element or has the element of same or like function.Below with reference to attached
The embodiment that figure describes is exemplary, it is intended to is used for explaining the present invention, and is not considered as limiting the invention.
According to an aspect of the present invention, the present invention proposes the smelting process of a kind of antimony concentrate.Concrete according to the present invention
The smelting process of the antimony concentrate of embodiment includes: antimony concentrate is dried process, in order to obtain being dried antimony concentrate；By dry antimony
Concentrate carries out ball-milling treatment, in order to obtain antimony concentrate powder；Utilize oxidizing semlting stove that antimony concentrate powder is carried out oxidizing semlting, in order to
To liquid height antimony slag, wherein, antimony concentrate powder, oxygen-enriched and coal dust are sprayed in molten bath from the sidewall of oxidizing semlting stove, by flux from
The furnace roof of oxidizing semlting stove adds；Liquid height antimony slag is carried out reduction melting in side-blown reduction stove, in order to obtain liquid antimony and
Reducing slag.
The smelting process of the antimony concentrate of the above embodiment of the present invention, is processed into granule in advance by antimony concentrate, and by antimony concentrate
Powder sprays in the molten bath in oxidizing semlting at a high speed through side-blown spray gun, uses side-blown mode to spray into oxygen-enriched and coal dust simultaneously, carries out oxygen
Change melting, finally carry out reduction melting and obtain liquid antimony.The method uses side-blown mode that antimony concentrate is injected directly into molten bath slag
Direct oxidation melting is carried out in Ceng, the volatile smelting technique of more existing antimony concentrate, eliminate volatilisation step, a step can realize antimony essence
The smelting in ore deposit.This method avoid the volatilization carrying out antimony concentrate, operating environment is more friendly, and efficiency is high.The method is beaten
Break the constraint of traditional antimony concentrate smelting process, a kind of method opening brand-new single step smelting antimony concentrate.The method can
To significantly improve antimony concentrate efficiency and antimony recovery.
It addition, use the method to smelt antimony concentrate, oxygen-enriched, coal dust, antimony concentrate powder blast through body of heater both sides spray gun
In molten bath, antimony concentrate powder, pulverized coal particle and air bubble in slag in high degree of dispersion shape.Owing to blasting the gas in molten bath to high temperature
Melt have input the biggest power of agitator, makes molten bath strong agitation, enhances the mass-and heat-transfer process between gas-liquid-solid, Jin Erjia
The oxidation sweetening reaction of speed antimony concentrate, and the burning of coal dust.Therefore, the smelting of the antimony concentrate of the above embodiment of the present invention is used
Smelting method can significantly improve antimony concentrate efficiency, reduces smelting cost.
The smelting process of the antimony concentrate of the specific embodiment of the invention is described in detail below with reference to Fig. 1.
S100 smelts pre-treatment
According to a particular embodiment of the invention, antimony concentrate is dried process, in order to obtain being dried antimony concentrate；To be dried
Antimony concentrate carries out ball-milling treatment, in order to obtain antimony concentrate powder.The antimony concentrate powder being thus prepared as antimony concentrate being dried can pass through
Reduce antimony concentrate particle diameter, increase the contact area of itself and oxidizing atmosphere, and then be effectively improved oxidation sweetening efficiency.
According to a particular embodiment of the invention, the mean diameter of the antimony concentrate powder that ball-milling treatment obtains can be that 40-500 is micro-
Rice.Thus can effectively prevent from blocking spray gun.According to the concrete example of the present invention, the mean diameter of antimony concentrate powder is preferably 75-
150 microns.Inventor finds, in the case of not blocking spray gun, if particle diameter is too small, and solvent bonding between granule, so that unfavorable
In dispersion, and increase ball milling energy consumption；If particle diameter is excessive, can reduce oxidation sweetening reaction efficiency, antimony recovery is low.Thus control
This particle diameter can also improve Quick Oxidation desulphurization reaction simultaneously so that spray gun sprays into rear rapid dispersion, improve and smelt effect
Rate and antimony recovery.
According to a particular embodiment of the invention, antimony concentrate is generally containing mechanical water 10～about 20%, and can send into fine coal is
The dry kiln of fuel carries out preliminary hydro-extraction, reduces to 8%-10% by aqueous for physics, improves the transportation performance of its material.To be the most dry
Dry rear antimony concentrate is sent in steam dryer and is carried out depth drying, makes containing mechanical water less than 0.5%, and then completes dried,
Obtain being dried antimony concentrate.Dried antimony concentrate release is ground, and granularity is 40-500 micron, preferably 75-150 micron.Steam is done
Dry machine heat source stream takes from the low-pressure steam after follow-up antimony concentrate oxidizing semlting stove waste heat boiler steam-electric power, and steam is done simultaneously
Dry produced tail gas is air and water vapour, beneficially environmental conservation, it is to avoid environmental pollution.And tail is narrow-minded, temperature is low,
Bagroom is used to process.
The side-blown oxidizing semlting of S200
According to a particular embodiment of the invention, utilize oxidizing semlting stove that antimony concentrate powder is carried out oxidizing semlting, in order to obtain
Liquid height antimony slag, wherein, sprays in molten bath, by flux from oxygen by antimony concentrate powder, oxygen-enriched and coal dust from the sidewall of oxidizing semlting stove
The furnace roof changing smelting furnace adds.
According to a particular embodiment of the invention, the antimony concentrate powder obtained after pre-treatment is carried by gas, sends into molten
Refining workshop antimony concentrate receives storehouse.Sprayed by pot-string type blowing device, oxidizing melting after Cornu Caprae seu Ovis allotter mean allocation
The antimony concentrate powder spray gun of stove.Antimony concentrate powder spray gun is multiple, and is evenly distributed in horizontal direction on the sidewall of oxidizing semlting stove,
Antimony concentrate powder sprays in the molten bath slag blanket in stove at a high speed through side-blown spray gun, and in high degree of dispersion shape, is quickly completed oxidation sweetening anti-
Should.Simultaneously there is pulverized coal gun (drawable type) with concentrate spray gun interlaced arrangement, according to stove interior-heat balance, coal injection and oxygen-enriched
Concurrent heating.Thus, use the mode of side-blown melting can significantly improve the oxidation sweetening reaction efficiency of fine iron breeze, the most all right
Improve smelting degree further, and then improve antimony recovery.
According to a particular embodiment of the invention, immersion side-blown spray gun is used to be sprayed in oxidizing semlting stove by antimony concentrate powder
Slag blanket bottom, molten bath.Thus can be prevented effectively from antimony concentrate ejection slag blanket surface, and then effective volatilization reducing iron ore concentrate, thus
Improve antimony recovery.
According to a particular embodiment of the invention, the thickness of slag blanket is 0.5-1.5 rice.This slag blanket can be made by blow-on in advance
Pond is formed.The thickness controlling slag blanket is 0.5-1.5 rice, can effectively prevent the volatilization of antimony concentrate, and provide smelting for antimony concentrate
The environment of refining, it is ensured that the Sb in antimony concentrate powder2S3After spraying into slag blanket, the oxygen sprayed into side-blown spray gun fully reacts, and then improves
Antimony concentrate powder oxidizing semlting degree, and then improve antimony recovery.
It addition, take thick slag blanket operation in oxidizing semlting stove, so that spray into the direct oxygen of antimony concentrate powder in deep, molten bath
Change.Therefore, the oxidized slag making of most antimony, form liquid height antimony slag, liquid height antimony slag is periodically discharged into side-blown from cinder notch
Reduction furnace carries out reduction dilution and processes.Therefore, carry out oxidation smelt by antimony concentrate be injected directly in slag blanket from sidewall, relatively from
Furnace roof is directly added into the smelting process of antimony concentrate, significantly reduces the volatilization of antimony trisulfide.
According to a particular embodiment of the invention, drawable type spray gun is used oxygen-enriched and coal dust to be sprayed from the sidewall of oxidizing semlting stove
Entering in molten bath, wherein, the inner nozzle Coal powder spray of drawable type spray gun, outer nozzle spray is oxygen-enriched.According to a particular embodiment of the invention, may be used
Odd test spray gun is spray gun disclosed in patent CN105737614, and it has outer nozzle, inner nozzle, has inserting of self-locking closure function
Connect self-locking body and closeouts.
Thus, use drawable type spray gun to spray into coal dust and oxygen-enriched, can effectively process for producing time center fine coal blockage or
Abrasion, simultaneously in the case of not slagging, it is also possible to realizes changing rifle core, ensures working continuously of side-blown converter.Because generally existing
The side-blown converter of process cold burden, when molten bath is less than spray gun, is again made molten bath and was not had spray gun to be to need 8-12 hour, have a strong impact on work
Industry efficiency.Use drawable type spray gun to spray into coal dust and oxygen-enriched, the above-mentioned situation of generation can be prevented effectively from, and then be effectively improved
Antimony concentrate efficiency.
According to a particular embodiment of the invention, oxygen-enriched and coal dust spray into position and antimony concentrate powder spray into position not with
In one horizontal plane.According to a particular embodiment of the invention, oxygen-enriched and coal dust the position that sprays into can be in oxidizing semlting stove both sides, often
Side can arrange multiple drawable type spray gun, is used for spraying into oxygen-enriched and coal dust, antimony concentrate powder spray into position equally in oxidizing semlting
Stove both sides, every side can arrange multiple immersion side-blown spray gun, is used for spraying into antimony concentrate powder.All of drawable type spray gun is positioned at same
One horizontal plane, all of immersion side-blown spray gun is positioned at same level, and all of drawable type spray gun and all of submergence
Formula side-blown spray gun is not in same level.Thus can improve the oxidation efficiency of antimony concentrate further.
Concrete example according to the present invention, it is preferable that the position that sprays into of oxygen-enriched and coal dust sprays into position less than antimony concentrate powder
Put.The position that sprays into of the most oxygen-enriched and coal dust is positioned at the spraying into below position of antimony concentrate powder.Oxygen-enriched and the coal dust thus sprayed into is formed
Oxidizing atmosphere can slag blanket surface passage, and then can effectively be pointed to top the antimony concentrate sprayed into provide high temperature oxidation
Environment, and then significantly improve the oxidizing semlting efficiency of antimony concentrate powder.
Thus, using the smelting process of antimony concentrate of the above embodiment of the present invention, oxygen-enriched, coal dust, antimony concentrate powder are through body of heater
Both sides spray gun blasts in molten bath simultaneously, antimony concentrate powder, pulverized coal particle and air bubble in slag in high degree of dispersion shape.Owing to blasting
The gas in molten bath have input the biggest power of agitator to high-temperature fusant, makes molten bath strong agitation, enhances the biography between gas-liquid-solid
Matter diabatic process, and then accelerate the oxidation sweetening reaction of antimony concentrate, and the burning of coal dust.Therefore, use the present invention above-mentioned
The smelting process of the antimony concentrate of embodiment can significantly improve antimony concentrate efficiency, reduces smelting cost.
According to a particular embodiment of the invention, use the oxidizing semlting method of side-blown antimony concentrate powder in the thickness slag blanket of molten bath,
Antimony concentrate can not volatilize the most substantially in a large number.Therefore, the oxygen material during oxidizing semlting is more controlled than being substantially.Specifically,
Oxygen demand can turn to antimony oxide according to antimony trisulfide total oxygen and two kinds of situations of antimony pentoxide calculate, and obtains oxygen
Winding-up weight range.And specifically oxygen demand can be according to practical condition in the scope of calculated oxygen spray volume
Inside carry out flexible.Therefore, using the smelting process of the antimony concentrate of the above embodiment of the present invention, raw material dosage proportioning more may be used
Control, and then cost can be reduced further.
As it is shown on figure 3, according to the oxidation mechanism of antimony, the reaction after antimony concentrate powder sprays into molten bath can be divided into two stages,
First stage is that antimony trisulfide oxidation sweetening forms antimony oxide, and second stage antimony oxide is oxidized to antimony pentoxide.Root
According to side-blown melting oxidation mechanisms dominant response it is:
Sb2S3+4.5O2(g)=Sb2O3+3SO2(g) (1)
Sb2O3+O2(g)=Sb2O5 (2)
Stibium oxide forms slag with stone-like pulse and flux slag making, and this slag is liquid height antimony slag.Liquid height antimony slag reaches a depthkeeping
After degree, enter side-blown reduction furnace by warm sludge chute.A small amount of antimony matte periodic exhaustion that oxidizing semlting obtains.
The high-temperature flue gas that oxidizing semlting stove produces leaks out in upper of furnace body and uptake flue, by CO second-time burning in flue gas
After, flue-gas temperature rises to 1200-1300 DEG C and send steam drying through waste heat boiler recovery waste heat, institute's producing steam after sending cogeneration
Machine.After flue gas after waste heat boiler cools down is processed by cottrell, flue gas send antacid, flue dust to have bad luck and returns side-blown reduction stove and join
Material.
S300 side-blown reduction melting
According to a particular embodiment of the invention, liquid height antimony slag is carried out reduction melting in side-blown reduction stove, in order to
To liquid antimony and reducing slag.Thus can effectively obtain the antimony that purity is higher.
According to the concrete example of the present invention, the liquid height antimony slag from oxidizing semlting stove passes through side-blown reduction stove warm sludge import
Entering in side-blown reduction furnace molten bath, side-blown reduction stove sprays into coal dust and antimony oxygen cigarette by being immersed in the side-blown spray gun in molten bath simultaneously
, there is the reduction melting reaction of antimony oxygen in dirt, it is broken that the reducing slag less than less than 1% containing antimony releases water in side-blown reduction stove, and liquid
Antimony is discharged by being siphoned off antimony mouth, takes out or liquid metal antimony flows directly into stibium trioxide stove by hot antimony chute and carries out after being cast into ingot
Blowing, prepares product stibium trioxide powder.
Following for the smelting process of the antimony concentrate readily appreciating the above embodiment of the present invention, below to this smelting process
Detailed description of the invention is described, and specifically, the method can utilize the smelting system of example below to implement.
According to a particular embodiment of the invention, the antimony concentrate of the specific embodiment of the invention is described in detail below with reference to Fig. 2
Smelting system.
The system of the antimony concentrate according to the specific embodiment of the invention includes: drying device 10, ball mill device 20, oxidizing semlting
Stove 30 and side-blown reduction stove 40.
Wherein, drying device 10 has antimony concentrate entrance 11 and dry antimony concentrate outlet 12.Drying device 10 is suitable to antimony
Concentrate is dried process, in order to obtain being dried antimony concentrate.
Ball mill device 20 has dry antimony concentrate entrance 21 and antimony concentrate powder outlet 22, is dried antimony concentrate entrance 21 and is dried
Antimony concentrate outlet connected 12.Dry antimony concentrate is carried out ball-milling treatment by ball mill device 20, in order to obtain antimony concentrate powder.
Oxidizing semlting stove 30 has flux entrance 31, antimony concentrate powder spray gun 32, Fuel lance 33, liquid height antimony slag outlet 34
With exhanst gas outlet 35, flux entrance 31 is arranged on the roof of oxidizing semlting stove 30, antimony concentrate powder spray gun 32 and Fuel lance 33
Being arranged on the sidewall of oxidizing semlting stove 30, antimony concentrate powder spray gun 32 is connected with antimony concentrate powder outlet 22.Thus can utilize oxygen
Change smelting furnace 30 and antimony concentrate powder is carried out oxidizing semlting, in order to obtain liquid height antimony slag, wherein, by antimony concentrate powder, oxygen-enriched and coal
Powder sprays in molten bath from the sidewall of oxidizing semlting stove, is added from the furnace roof of oxidizing semlting stove by flux.
Side-blown reduction stove 40 has liquid height antimony slag entrance 41, liquid antimony outlet 42 and reducing slag outlet 43, liquid height antimony
Slag entrance 41 is connected with liquid height antimony slag outlet 34.Side-blown reduction stove 40 is suitable to carry out liquid height antimony slag in side-blown reduction stove
Reduction melting, in order to obtain liquid antimony and reducing slag.
According to a particular embodiment of the invention, the smelting system utilizing the antimony concentrate of above-described embodiment carries out smelting to antimony concentrate
Refining, specifically can be carried out according to the following step:
(1) in utilizing drying device 10, antimony concentrate is dried process, in order to obtain being dried antimony concentrate；Ball milling is utilized to fill
Put 20 and dry antimony concentrate is carried out ball-milling treatment, in order to obtain antimony concentrate powder.This completes the smelting pre-treatment of antimony concentrate.
(2) utilize oxidizing semlting stove 30 that antimony concentrate powder is carried out oxidizing semlting, in order to obtain liquid height antimony slag, wherein, incite somebody to action
Antimony concentrate powder sprays into molten bath from the antimony concentrate powder spray gun 32 of the sidewall being positioned at oxidizing semlting stove, by oxygen-enriched and coal dust from being positioned at oxygen
The Fuel lance 33 of the sidewall changing smelting furnace sprays in molten bath, is added from the flux entrance 31 of the roof of oxidizing semlting stove 30 by flux
Enter.
(3) it is molten that the liquid height antimony slag utilizing side-blown reduction stove 40 oxidizing semlting stove 30 internal oxidition melting to be obtained carries out reduction
Refining, in order to obtain liquid antimony and reducing slag.
Use the smelting system of the antimony concentrate of the above embodiment of the present invention, in advance antimony concentrate is processed into granule, and by antimony
Fine ore sprays in the molten bath in oxidizing semlting at a high speed through side-blown spray gun, uses side-blown mode to spray into oxygen-enriched and coal dust simultaneously, enters
Row oxidizing semlting, finally carries out reduction melting and obtains liquid antimony.Use this system that antimony concentrate is smelted, oxygen-enriched, coal dust, antimony
Fine ore blasts in molten bath through body of heater both sides spray gun, antimony concentrate powder, pulverized coal particle and air bubble in slag in high degree of dispersion shape.
Have input the biggest power of agitator owing to blasting the gas in molten bath to high-temperature fusant, make molten bath strong agitation, enhance gas-liquid-solid
Between mass-and heat-transfer process, and then accelerate the oxidation sweetening reaction of antimony concentrate, and the burning of coal dust.Therefore, this is used
The smelting system of the antimony concentrate of invention above-described embodiment can significantly improve antimony concentrate efficiency, reduces smelting cost.
Thus, the smelting system of the antimony concentrate of the above embodiment of the present invention, the volatile smelting of more existing antimony concentrate are used
Technique, eliminates volatilisation step, a step can realize the smelting of antimony concentrate.This method avoid the volatilization that antimony concentrate is carried out, behaviour
Making more environment-friendly, efficiency is high.The method has broken the constraint of traditional antimony concentrate smelting process, easy for antimony concentrate
The feature of volatilization, a kind of method opening brand-new single step smelting antimony concentrate.This system can significantly improve antimony concentrate smelting
Refining efficiency and antimony recovery.
According to a particular embodiment of the invention, antimony concentrate powder spray gun is immersion side-blown spray gun, and according to the present invention's
Specific embodiment, immersion side-blown spray gun is arranged on the sidewall being positioned at molten bath slag blanket of oxidizing semlting stove, is preferably placed at molten bath
On the sidewall of slag blanket bottom.Thus can be prevented effectively from antimony concentrate ejection slag blanket surface, and then effective volatilization reducing iron ore concentrate,
Thus improve antimony recovery.
According to a particular embodiment of the invention, Fuel lance is drawable type spray gun, and the inner nozzle of drawable type spray gun is suitable to spray
Coal dust, outer nozzle is suitable to spray oxygen-enriched.According to a particular embodiment of the invention, drawable type spray gun is that patent CN105737614 is open
Spray gun, it has outer nozzle, inner nozzle, the grafting self-locking body with self-locking closure function and closeouts.
Thus, use drawable type spray gun to spray into coal dust and oxygen-enriched, can effectively process for producing time center fine coal blockage or
Abrasion, simultaneously in the case of not slagging, it is also possible to realizes hot replacing rifle core, ensures working continuously of side-blown converter.Because it is logical
Often when the side-blown converter processing cold burden is less than spray gun when molten bath, again make molten bath and do not had spray gun to be to need 8-12 hour, serious shadow
Ring working performance.Use drawable type spray gun to spray into coal dust and oxygen-enriched, can be prevented effectively from the above-mentioned situation of generation, and then effectively
Improve antimony concentrate efficiency.
According to a particular embodiment of the invention, Fuel lance and antimony concentrate powder spray gun be not in same level.According to this
The specific embodiment of invention, Fuel lance can arrange multiple Fuel lance in oxidizing semlting stove both sides, every side, be used for spraying
Entering oxygen-enriched and coal dust, antimony concentrate powder spray gun is equally in oxidizing semlting stove both sides, and every side can arrange multiple antimony concentrate powder spray gun, uses
In spraying into antimony concentrate powder.All of Fuel lance (drawable type spray gun) is positioned at the same level, (leaching of all of antimony concentrate powder spray gun
Do not have formula side-blown spray gun) it is positioned at same level, and all of drawable type spray gun and all of immersion side-blown spray gun be not same
One horizontal plane.Thus can improve the oxidation efficiency of antimony concentrate further.
Concrete example according to the present invention, it is preferable that Fuel lance is positioned at the lower section of antimony concentrate powder spray gun.Thus by fuel
The oxidizing atmosphere that the oxygen-enriched and coal dust that spray gun sprays into is formed can elapse on slag blanket surface, and then can effectively be pointed to the antimony of top
The antimony concentrate that fine ore spray gun sprays into provides the oxidation environment of high temperature, and then significantly improves the oxidizing semlting efficiency of antimony concentrate powder.
According to the concrete example of the present invention, at least 0.4 meter of slag blanket surface, molten bath of antimony concentrate powder spray gun distance.Thus can have
Effect avoids the volatilization of antimony concentrate, significantly improves antimony recovery.
Thus, using the smelting system of antimony concentrate of the above embodiment of the present invention, oxygen-enriched, coal dust, antimony concentrate powder are through body of heater
Both sides spray gun blasts in the slag blanket of molten bath simultaneously, antimony concentrate powder, pulverized coal particle and air bubble in slag in high degree of dispersion shape.Due to
The gas blasting molten bath have input the biggest power of agitator to high-temperature fusant, makes molten bath strong agitation, enhances between gas-liquid-solid
Mass-and heat-transfer process, and then accelerate the oxidation sweetening reaction of antimony concentrate, and the burning of coal dust.Therefore, the present invention is used
The smelting system of the antimony concentrate of above-described embodiment can significantly improve antimony concentrate efficiency, reduces smelting cost.
In describing the invention, it is to be understood that term " " center ", " longitudinally ", " laterally ", " length ", " width ",
" thickness ", " on ", D score, "front", "rear", "left", "right", " vertically ", " level ", " top ", " end " " interior ", " outward ", " up time
Pin ", " counterclockwise ", " axially ", " radially ", the orientation of the instruction such as " circumferential " or position relationship be based on orientation shown in the drawings or
Position relationship, is for only for ease of the description present invention and simplifies description rather than instruction or imply that the device of indication or element must
Must have specific orientation, with specific azimuth configuration and operation, be therefore not considered as limiting the invention.
In the present invention, unless otherwise clearly defined and limited, term " install ", " being connected ", " connection ", " fixing " etc.
Term should be interpreted broadly, and connects for example, it may be fixing, it is also possible to be to removably connect, or integral；Can be that machinery connects
Connect, it is also possible to be electrical connection；Can be to be joined directly together, it is also possible to be indirectly connected to by intermediary, in can being two elements
The connection in portion or the interaction relationship of two elements.For the ordinary skill in the art, can be according to concrete feelings
Condition understands above-mentioned term concrete meaning in the present invention.
In the present invention, unless otherwise clearly defined and limited, fisrt feature second feature " on " or D score permissible
It is that the first and second features directly contact, or the first and second features are by intermediary mediate contact.And, fisrt feature exists
Second feature " on ", " top " and " above " but fisrt feature directly over second feature or oblique upper, or be merely representative of
Fisrt feature level height is higher than second feature.Fisrt feature second feature " under ", " lower section " and " below " can be
One feature is immediately below second feature or obliquely downward, or is merely representative of fisrt feature level height less than second feature.
In the description of this specification, reference term " embodiment ", " some embodiments ", " example ", " specifically show
Example " or the description of " some examples " etc. means to combine this embodiment or example describes specific features, structure, material or spy
Point is contained at least one embodiment or the example of the present invention.In this manual, to the schematic representation of above-mentioned term not
Identical embodiment or example must be directed to.And, the specific features of description, structure, material or feature can be arbitrary
Individual or multiple embodiment or example combine in an appropriate manner.Additionally, in the case of the most conflicting, the technology of this area
The feature of the different embodiments described in this specification or example and different embodiment or example can be combined by personnel
And combination.
Although above it has been shown and described that embodiments of the invention, it is to be understood that above-described embodiment is example
Property, it is impossible to being interpreted as limitation of the present invention, those of ordinary skill in the art within the scope of the invention can be to above-mentioned
Embodiment is changed, revises, replaces and modification.
Claims (7)
1. the smelting process of an antimony concentrate, it is characterised in that including:
Antimony concentrate is dried process, in order to obtain being dried antimony concentrate；
Described dry antimony concentrate is carried out ball-milling treatment, in order to obtain antimony concentrate powder；
Utilize oxidizing semlting stove that described antimony concentrate powder is carried out oxidizing semlting, in order to obtain liquid height antimony slag, wherein, by described antimony
Fine ore, oxygen-enriched and coal dust spray in molten bath from the sidewall of described oxidizing semlting stove, by flux from the stove of described oxidizing semlting stove
Top adds；
Described liquid height antimony slag is carried out reduction melting in side-blown reduction stove, in order to obtain liquid antimony and reducing slag.
The smelting process of antimony concentrate the most according to claim 1, it is characterised in that the mean diameter of described antimony concentrate powder is
40-500 micron, preferably 75-150 micron.
The smelting process of antimony concentrate the most according to claim 1, it is characterised in that use immersion side-blown spray gun by described
Antimony concentrate powder sprays into the slag blanket bottom, molten bath in described oxidizing semlting stove.
The smelting process of antimony concentrate the most according to claim 3, it is characterised in that the thickness of described slag blanket is 0.5-1.5
Rice.
The smelting process of antimony concentrate the most according to claim 1, it is characterised in that use drawable type spray gun by described oxygen-enriched
Slag blanket bottom, molten bath, wherein, the inner nozzle coal powder injection of described drawable type spray gun is sprayed into from the sidewall of described oxidizing semlting stove with coal dust
Powder, outer nozzle spray is oxygen-enriched.
The smelting process of antimony concentrate the most according to claim 1, it is characterised in that spraying into of described oxygen-enriched and described coal dust
Position sprays into position not in same level with described antimony concentrate powder.
The smelting process of antimony concentrate the most according to claim 6, it is characterised in that spraying into of described oxygen-enriched and described coal dust
Position sprays into position less than described antimony concentrate powder.
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| CN112981136A (en) * | 2021-04-16 | 2021-06-18 | 中国恩菲工程技术有限公司 | One-step zinc smelting method for spraying zinc concentrate in molten pool |
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| CN106222451B (en) | 2018-04-17 |
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