CN105907988B - The equipment smelted for Pb-Zn deposits - Google Patents
The equipment smelted for Pb-Zn deposits Download PDFInfo
- Publication number
- CN105907988B CN105907988B CN201610439929.3A CN201610439929A CN105907988B CN 105907988 B CN105907988 B CN 105907988B CN 201610439929 A CN201610439929 A CN 201610439929A CN 105907988 B CN105907988 B CN 105907988B
- Authority
- CN
- China
- Prior art keywords
- zinc
- outlet
- melt
- lead
- deposits
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- 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
- C22B19/00—Obtaining zinc or zinc oxide
- C22B19/04—Obtaining zinc by distilling
- C22B19/16—Distilling vessels
- C22B19/18—Condensers, Receiving vessels
-
- 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
- C22B13/00—Obtaining lead
- C22B13/02—Obtaining lead by dry processes
-
- 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
- F27D17/004—Systems for reclaiming waste heat
-
- 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
- F27D17/008—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases cleaning gases
-
- 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
- F27D17/004—Systems for reclaiming waste heat
- F27D2017/006—Systems for reclaiming waste heat using a boiler
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
Equipment the invention discloses being smelted for Pb-Zn deposits, comprising: there is oxidizing semlting furnace Pb-Zn deposits entrance, flux entrance, melting exhanst gas outlet and melt outlet, melt to contain zinc oxide and lead oxide；There is power frequency electric reduction furnace melt inlet, reducing agent entrance, liquid lead outlet, slag outlet and exhanst gas outlet containing zinc, melt inlet to be connected with melt outlet；There is zinc rain condenser smoke inlet containing zinc, liquid Zn outlet and gas exit, smoke inlet containing zinc to be connected with exhanst gas outlet containing zinc.Can be directly by Pb-Zn deposits after oxidizing fusion using the equipment, to power frequency electric reduction furnace, in the furnace body, zinc oxide is reduced to metal zinc fume by pyrocarbon, further obtains liquid metal zinc by condensation for supply under high-temperature fusant state.Into the lead oxide in furnace body, liquid metal lead is reduced to by pyrocarbon, drops to straight well formula power frequency electrothermal furnace lower part expansion chamber together with the liquid metal lead skim that the oxides such as iron, silicon, calcium, aluminium, magnesium form.
Description
Technical field
The present invention relates to field of metallurgy.Specifically, the equipment the present invention relates to being smelted for Pb-Zn deposits.
Background technique
It is mostly mineral intergrowth based on led-zinc-silver deposit, is generally sorted after exploitation at present as lead concentrate and zinc concentrate, difference
The smeltery Song Qian and zinc smelting factory are separately handled.It is always miscellaneous in lead concentrate to have a certain number of zinc, zinc essence since sorting is difficult to thoroughly
It is miscellaneous in mine to have a certain number of lead.Smelt Hou Qian factory output Zn dust Xu Song zinc factory and office reason, output lead smelting gas Xu Song lead factory, zinc factory
Processing.
Current Pb-Zn deposits smelt means and still have much room for improvement as a result,.
Summary of the invention
The present invention is directed to solve one of above-mentioned technical problem at least to a certain extent or at least provide one kind useful quotient
Industry selection.For this purpose, an object of the present invention is to provide a kind of with the means that can be effectively smelted to Pb-Zn deposits.
The present invention is the following discovery based on inventor and completes:
When carrying out reduction treatment by using melt of the main frequency furnace to zinc oxide and lead oxide, reduzate zinc can become gas
State, and reduzate lead can then maintain liquid.
In one aspect of the invention, according to the present invention the invention proposes a kind of equipment smelted for Pb-Zn deposits
Embodiment, the equipment include: oxidizing semlting furnace, and the oxidizing semlting stove has Pb-Zn deposits entrance, flux entrance, melting flue gas to go out
Mouth and melt outlet, the melt contain zinc oxide and lead oxide；Power frequency electric reduction furnace, the power frequency electric reduction furnace have
Melt inlet, reducing agent entrance, liquid lead outlet, slag outlet and exhanst gas outlet containing zinc, the melt inlet and the melt
Outlet is connected；And zinc rain condenser, the zinc rain condenser have smoke inlet containing zinc, liquid Zn outlet and gas exit,
The smoke inlet containing zinc is connected with the exhanst gas outlet containing zinc.
Using the equipment, effectively Pb-Zn deposits can be smelted, as previously mentioned, not needed using the technique to lead
Zinc ore is sorted, and directly by Pb-Zn deposits after oxidizing fusion, is supplied under high-temperature fusant state to power frequency electric reduction furnace,
In the furnace body, zinc oxide can be reduced to metal zinc fume by pyrocarbon, further obtain liquid metal zinc by condensation.Into
Lead oxide in furnace body is reduced to liquid metal lead by pyrocarbon, the liquid lead formed with oxides such as iron, silicon, calcium, aluminium, magnesium
Slag drops to straight well formula power frequency electrothermal furnace lower part expansion chamber together.The separation of slag lead is carried out in expansion chamber.It is released by expansion chamber lower part
Mouth releases metallic lead.According to an embodiment of the invention, clinker can be released by expansion chamber top discharge port.It is outer after furnace slag granulating
It sells.
In addition, the equipment according to the above embodiment of the present invention smelted for Pb-Zn deposits can also have following additional skill
Art feature:
In some embodiments of the invention, the reducing agent inlet is provided with double-charging bell feeder.Thus, it is possible to aobvious
It writes and improves equipment sealing performance.
It in some embodiments of the invention, further include waste heat boiler, the smoke inlet of the waste heat boiler and the melting
Exhanst gas outlet is connected.Thus, it is possible to which system waste heat is made to be fully utilized.
It in some embodiments of the invention, further include deduster, the import of the deduster and the waste heat boiler
Outlet flue is connected.
In some embodiments of the invention, the deduster is electric precipitator.
In some embodiments of the invention, the power frequency electric reduction furnace includes vertical reduction section and Horizontal sedimentation section,
And coil is provided on the vertical reduction section and the outer wall of the Horizontal sedimentation section.Thus, it is possible to effectively maintain furnace temperature.
In some embodiments of the invention, by siphon port, the melt is input to the power frequency electric reduction furnace
In.Thus, it is possible to further increase equipment sealing performance.
In some embodiments of the invention, the reducing agent is coke.
In some embodiments of the invention, the reducing agent further comprises magnetizer.
In some embodiments of the invention, the magnetizer is graphite.
In some embodiments of the invention, the graphite is the 10~50% of the reducing agent quality.
In some embodiments of the invention, the temperature of the melt is at least 900 degrees Celsius.
In some embodiments of the invention, liquid lead is discharged by siphon port.Thus, it is possible to which it is close to further increase equipment
Sealing property.
Additional aspect and advantage of the invention will be set forth in part in the description, and will partially become from the following description
Obviously, or practice through the invention is recognized.
Detailed description of the invention
Above-mentioned and/or additional aspect of the invention and advantage will become from the description of the embodiment in conjunction with the following figures
Obviously and it is readily appreciated that, in which:
Fig. 1 shows the cross section structure schematic diagram for the equipment of one embodiment of the invention smelted for Pb-Zn deposits；
Fig. 2 shows the part-structure top view in the equipment of further embodiment of the present invention smelted for Pb-Zn deposits；
Fig. 3 shows the structural schematic diagram for the equipment of another embodiment of the invention smelted for Pb-Zn deposits；
Fig. 4 shows the structural schematic diagram for the equipment of another embodiment of the invention smelted for Pb-Zn deposits；
Fig. 5, which is shown, implements Pb-Zn deposits smelting process using the equipment of one embodiment of the invention smelted for Pb-Zn deposits
Flow diagram.
Specific embodiment
The embodiment of the present invention is described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning to end
Same or similar label indicates same or similar element or element with the same or similar functions.Below with reference to attached
The embodiment of figure description is exemplary, it is intended to is used to explain the present invention, and is not considered as limiting the invention.
In the description of the present invention, it is to be understood that, term " center ", " longitudinal direction ", " transverse direction ", " length ", " width ",
" thickness ", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outside", " up time
The orientation or positional relationship of the instructions such as needle ", " counterclockwise ", " axial direction ", " radial direction ", " circumferential direction " be orientation based on the figure or
Positional relationship is merely for convenience of description of the present invention and simplification of the description, rather than the device or element of indication or suggestion meaning must
There must be specific orientation, be constructed and operated in a specific orientation, therefore be not considered as limiting the invention.
In addition, term " first ", " second " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance
Or implicitly indicate the quantity of indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or
Implicitly include at least one this feature.In the description of the present invention, the meaning of " plurality " is at least two, such as two, three
It is a etc., unless otherwise specifically defined.
In the present invention unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " fixation " etc.
Term shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integral；It can be mechanical connect
It connects, is also possible to be electrically connected；It can be directly connected, can also can be in two elements indirectly connected through an intermediary
The interaction relationship of the connection in portion or two elements, unless otherwise restricted clearly.For those of ordinary skill in the art
For, the specific meanings of the above terms in the present invention can be understood according to specific conditions.
In the present invention unless specifically defined or limited otherwise, fisrt feature in the second feature " on " or " down " can be with
It is that the first and second features directly contact or the first and second features pass through intermediary mediate contact.Moreover, fisrt feature exists
Second feature " on ", " top " and " above " but fisrt feature be directly above or diagonally above the second feature, or be merely representative of
First feature horizontal height is higher than second feature.Fisrt feature can be under the second feature " below ", " below " and " below "
One feature is directly under or diagonally below the second feature, or is merely representative of first feature horizontal height less than second feature.
The embodiment of the present invention is described below in detail, the embodiments described below with reference to the accompanying drawings are exemplary, purport
It is being used to explain the present invention, and is being not considered as limiting the invention.
All bibliography being mentioned herein all are incorporated herein by reference.
Unless there are indicating on the contrary, all technical and scientific terms used herein all have common with fields of the present invention
The identical meaning that technical staff is generally understood.Unless there are indicating on the contrary, technology that is used herein or mentioning is ability
Standard technique well known to the those of ordinary skill of domain.Material, method and example are only used as to illustrate, rather than limit.
The present invention is the following discovery based on inventor and completes:
When carrying out reduction treatment by using melt of the main frequency furnace to zinc oxide and lead oxide, reduzate zinc can become gas
State, and reduzate lead can then keep liquid.
In one aspect of the invention, according to the present invention the invention proposes a kind of equipment smelted for Pb-Zn deposits
Embodiment, with reference to Fig. 1, which includes: oxidizing semlting furnace 100, power frequency electric reduction furnace 200 and zinc rain condenser 300.
According to an embodiment of the invention, oxidizing semlting furnace 100 has Pb-Zn deposits entrance 101, flux entrance 102, melting cigarette
Gas outlet 103 and melt outlet 104, and be suitable for mixing Pb-Zn deposits into obtained mixture with flux and carry out oxidizing semlting, from
And the melt containing zinc oxide and lead oxide can be obtained.Specifically, Pb-Zn deposits can be lead zinc composite sulfuration mine, and in oxygen
Slag former appropriate can be added by changing in fusion process.It should be noted that those skilled in the art can be according to actual needs
The condition of used flux and oxidizing semlting is selected, and Pb-Zn deposits entrance 101 and flux entrance 102 can be
The same entrance or independent two entrances
According to one embodiment of present invention, the temperature of the melt containing zinc oxide and lead oxide is at least 900 degrees Celsius.
Thus, it is possible to further increase the Environmental Protection Level that Pb-Zn deposits are smelted in subsequent process.
According to an embodiment of the invention, power frequency electric reduction furnace 200 has melt inlet 201, reducing agent entrance 202, liquid
State lead outlet 203, slag outlet 204 and exhanst gas outlet containing zinc 205, melt inlet 201 is connected with melt outlet 104, and is suitable for
Using reducing agent, also original place is carried out in power frequency electric reduction furnace to the above-mentioned obtained melt containing zinc oxide and lead oxide
Reason and slag settlement treatment, it is hereby achieved that flue gas containing zinc, liquid lead and clinker.
According to one embodiment of present invention, zinc oxide can be contained for what oxidizing semlting process obtained by siphon port
It supplies with the melt of lead oxide into power frequency electric reduction furnace.Inventor's discovery is fed by using siphon port, can be effectively
It feeds under air-proof condition, so as to further increase the efficiency of Pb-Zn deposits smelting.
Still another embodiment in accordance with the present invention, with reference to Fig. 1 and Fig. 2, power frequency electric reduction furnace 200 may include vertical goes back
Former section 21 and Horizontal sedimentation section 22, and coil 23 is provided on vertical reduction section 21 and the outer wall of Horizontal sedimentation section 22.Tool
Body, as shown in Figure 1, the lower end passage of vertical reduction section 21 is connected with the Upper passage of Horizontal sedimentation section 22, and vertical
The lower end passage of reduction section 21 tilts upward, so as to avoid the reducing agent that reduction section is added from entering settling section.Lead to as a result,
It crosses and coil is set on vertical reduction section 21 and the outer wall of Horizontal sedimentation section 22, alternating magnetic field is generated using coil and maintains reduction section
With the furnace temperature of settling section, so as to further increase Pb-Zn deposits smelting efficiency.It according to a particular embodiment of the invention, can be with
Using 200~400 kilowatts of induction coil.
According to still another embodiment of the invention, reducing agent can be coke.Thus, it is possible to further increase Pb-Zn deposits smelting
The efficiency of refining.
According to still another embodiment of the invention, it may further include magnetizer in reducing agent.As a result, in external coil
Under the action of alternating magnetic field of generation, magnetizer can effectively keep in-furnace temperature and stablize, so as to further increase lead zinc
The efficiency of mining and metallurgy refining.
According to still another embodiment of the invention, magnetizer can be graphite.Inventor has found that graphite can effectively be led
Magnetic, and impurity will not be introduced to subsequent reactions, so as to further increase the efficiency of Pb-Zn deposits smelting.Specifically, coke
It is added directly into the reduction section in power frequency electric reduction furnace with graphite block mixture, coke is used as reducing agent, graphite block conduct
Magnetic conducting and heating material (carbon when actual production in graphite equally has certain reproducibility), reduction section furnace shell are equipped with single-core line outside
Circle, coil generates changing magnetic field when indirect current, and graphite block is influenced to start the coke of fever and circumference by the variation magnetic field
Charcoal and melt maintain reaction zone thermal balance, and the temperature for being entirely reduced directly section is made to meet the requirement of smelting charge of lead and zinc direct-reduction.
According to one embodiment of present invention, graphite can be the 10~50% of reducing agent quality.Thus, it is possible to further
Improve the efficiency that Pb-Zn deposits are smelted.Inventors have found that being insufficient to allow the temperature restored in space if the ratio of graphite is too small
Stablize, if the ratio of graphite is excessive, will affect the efficiency of reduction treatment.
According to still another embodiment of the invention, liquid lead is discharged by siphon port.Thus, it is possible to further increase lead zinc
The efficiency of mining and metallurgy refining.
According to still another embodiment of the invention, double-charging bell feeder 24 is provided at reducing agent entrance 202.Specifically,
The charging bell of incandescent coke and graphite block will be filled by Special crane, it is accurate to sit down to double-charging bell feeder, then put down
Feed bell bottom valve, and incandescent coke and graphite are fallen into the bucket of double-charging bell feeder top, then hang away charging bell, then put down extra quality
The top bottom valve of clock feeder, coke and graphite are fallen into the lower part bucket of double-charging bell feeder, promote top bottom valve at this time, are closed
Gas passage, then the lower part bottom valve of double-charging bell feeder is opened, finally incandescent coke is added with graphite block by reducing agent entrance
Enter in power frequency electric reduction furnace in reduction reaction area, and with this cycle operation, the coke of continuous consumption in reaction zone is continuously replenished
With graphite block.
In the step, specifically, when the melt containing zinc oxide and lead oxide falls into the reduction section of power frequency electric reduction furnace
In, red-hot coke is encountered, reduction reaction can occur immediately and generate molten metal lead, clinker and contain zinc fume and an oxygen
Change carbon/carbon dioxide flue gas.Molten metal lead and clinker flow downward, through reduction section lower section channel from the upper end of settling section
Channel (inclination upwards, in order to avoid coke and graphite block fall into precipitating phase) flow into precipitating phase.It is also provided with coil outside precipitating phase furnace shell,
Molten metal lead can generate heat under the action of variation magnetic field maintains furnace temperature, to keep certain mobility.Finally, melting
Metallic lead is released from precipitating phase bottom siphon lead tap, and for a small amount of slag after accumulation to a certain extent, clinker passes through top slag tap
It releases.
According to an embodiment of the invention, zinc rain condenser 300 has smoke inlet containing zinc 301, liquid Zn outlet 302 and coal
Gas outlet 303, smoke inlet containing zinc 301 is connected with exhanst gas outlet containing zinc 205, and being suitable for will be obtained in power frequency electric reduction furnace
Flue gas containing zinc is condensed, to obtain liquid Zn and coal gas.According to one embodiment of present invention, it can use the condensation of zinc rain
Device carries out the condensation of Pb-Zn deposits smelting to flue gas containing zinc.It as a result, can be cold by the metallic zinc carried in flue gas containing zinc using zinc rain
It coagulates, and carbon monoxide or/and the carbon dioxide continuation wherein carried exists in a gaseous form, and further after washing, purifying
It is recycled in the form of coal gas.Specifically, the liquid Zn rain lead that zinc rain condenser is trapped by zinc rain, with being pumped into zinc liquid
Cooling bath, after refrigerated separation lead, part zinc liquid is cast into product coarse zinc ingot metal, and part zinc liquid returns to zinc rain condenser circulation for catching
Collect zinc fume.
The equipment according to an embodiment of the present invention smelted for Pb-Zn deposits as a result, effectively can carry out smelting to Pb-Zn deposits
Refining, as previously mentioned, not needing to sort Pb-Zn deposits using the technique, directly by Pb-Zn deposits after oxidizing fusion, in high temperature
It supplies under melt state to power frequency electric reduction furnace, in the furnace body, zinc oxide can be reduced to metal zinc fume by pyrocarbon,
Liquid metal zinc is further obtained by condensation.Into the lead oxide in furnace body, liquid metal lead is reduced to by pyrocarbon, with
The liquid lead skim of the oxides such as iron, silicon, calcium, aluminium, magnesium composition drops to straight well formula power frequency electrothermal furnace lower part expansion chamber together.Heavy
It drops room and carries out the separation of slag lead.Metallic lead is released by expansion chamber lower tap hole.According to an embodiment of the invention, can be by expansion chamber
Top discharge port releases clinker.It is outer after furnace slag granulating to sell.
With reference to Fig. 3, the equipment according to an embodiment of the present invention smelted for Pb-Zn deposits further comprises: waste heat boiler 400.
According to an embodiment of the invention, the smoke inlet of waste heat boiler 400 is connected with melting exhanst gas outlet 103.Thus, it is possible to
So that system waste heat is fully utilized.
With reference to Fig. 4, the equipment according to an embodiment of the present invention smelted for Pb-Zn deposits further comprises: deduster 500.
According to an embodiment of the invention, the import of deduster 500 is connected with the outlet flue of waste heat boiler 400.According to this hair
Bright one embodiment, deduster can be electric precipitator.Thus, it is possible to further increase efficiency of dust collection.
According to an embodiment of the invention, the equipment according to an embodiment of the present invention smelted for Pb-Zn deposits can at least have
At least one following advantage:
According to an embodiment of the invention, simplifying the mineral processing circuit of lead and zinc mineral resources, improving valuable metal time
Yield reduces beneficiation cost.
According to an embodiment of the invention, lead zinc synchronous smelting together, eliminates companion between the lead factory of original technique and zinc factory
The intermediate material that bioelement generates mutually is had bad luck back and forth, transports without intermediate material, reduces main Metal Production cost.
According to an embodiment of the invention, avoiding original technique using main frequency furnace electrothermal reduction lead zinc using air-supply or sending
Oxygen just maintains reduction process thermal balance by fuel burning heat supply.Fuel burning dimension temperature, exhaust gas volumn is big, and it is more that flue gas takes away waste heat, because
This energy consumption is higher.Electrothermal reduction only has lead oxide, zinc oxide, the di-iron trioxide etc. for needing to be reduced in the high-temperature fusant being added
The oxygen that material is brought into just consumes reducing agent carbon or hydrogen.Reducing agent consumption is theoretical value, and the exhaust gas volumn of generation is also theoretical value, energy
Consumption is minimum in all techniques.
According to an embodiment of the invention, 85% or more zinc is produced by wet method smelting process in the world at present, leached mud
It is danger waste dump is one of the difficult problem of environmental protection, and its harmless treatment, prior art energy consumption are very high.This technique can economy have
Effect solves the problems, such as that zinc leaching residue pollutes environment.
According to authorization invention CN200610066648.4's " a kind of lead smelting process and for realizing the device of the lead smelting process "
Expanding test parameter, using vertical shaft type electrothermal reduction, lead, zinc metal recovery rate are all very high.Accompanying element other than lead zinc, such as
Au, Ag, Cu, Ni, Bi, Sn, the overwhelming majority are reduced into lead bullion, and the volatile matters such as Cd, Ga, In, Il, Ge be condensed into
Enter crude zinc.With lead bullion and crude zinc refining process, these associated metals can be recycled one by one respectively, realize that high integrity utilizes.Extremely
As, Hg accompanying element contained in lead and zinc industry, the overwhelming majority enters flue gas quilt during first step oxidizing semlting
It removes, is not inquired within the scope of this patent.
The furnace heat supply of mine thermal resistance is used in the prior art, there are multiple electrodes to be inserted into hole, electrode-inserting holes are difficult to be absolutely sealed,
How much having flue gas to leak influences environment.This patent uses main frequency furnace heat supply, and without electrode-inserting holes, furnace body is all sealed, nothing
Flue gas leaks, and has optimal environmental benefit.It is restored, is sprayed by air or nitrogen to inside ore-smelting electric furnace using ore-smelting electric furnace
The reduction of zinc fume concentration can be made by blowing fine coal as reducing agent, air or nitrogen, and slag contains Zn >=3%, and also with main frequency furnace
Stoste state smelting charge of lead and zinc, zinc fume concentration is high, and slag can achieve theoretical value≤0.22% containing zinc, so using ore-smelting electric furnace
It carries out reducing and smelting smelting charge of lead and zinc to need to be followed by fuming furnace slag is further processed, and is then no longer needed to using main frequency furnace pair
Slag carries out advanced treating.
In order to facilitate understanding, implement below with reference to Fig. 5 to using the equipment of the embodiment of the present invention smelted for Pb-Zn deposits
Pb-Zn deposits smelting process is described in detail.According to an embodiment of the invention, this method comprises:
S100: Pb-Zn deposits are mixed with flux, and obtained mixture is carried out oxidizing semlting
Pb-Zn deposits are mixed with flux in this step, and obtained mixture is subjected to oxidizing semlting, to obtain
Melt containing zinc oxide and lead oxide.Specifically, Pb-Zn deposits herein can refer to including lead content > 40wt% high-grade
Raw ore, or general lead zine ores lead and zinc total amount > 50wt% lead and zinc concentrate after ore dressing, and can during oxidizing semlting
Slag former appropriate is added.It should be noted that those skilled in the art can be according to actual needs to used flux
And the condition of oxidizing semlting is selected.
According to one embodiment of present invention, the temperature of the melt containing zinc oxide and lead oxide is at least 900 degrees Celsius.
Thus, it is possible to further increase the efficiency that Pb-Zn deposits are smelted in subsequent process.
S200: reducing agent is utilized, the melt containing zinc oxide and lead oxide is restored in power frequency electric reduction furnace
Processing and slag settlement treatment
In this step, using reducing agent, to the above-mentioned obtained melt containing zinc oxide and lead oxide in power frequency electric
Reduction treatment and slag settlement treatment are carried out in thermal reduction furnace, to obtain flue gas containing zinc, liquid lead and clinker.
According to one embodiment of present invention, zinc oxide can be contained for what oxidizing semlting process obtained by siphon port
It supplies with the melt of lead oxide into power frequency electric reduction furnace.Inventor's discovery is fed by using siphon port, can be effectively
It feeds under air-proof condition, so as to further increase the Environmental Protection Level of Pb-Zn deposits smelting.
Still another embodiment in accordance with the present invention, power frequency electric reduction furnace can have multiple coils, and multiple coils
It is arranged on the outer wall of power frequency electric reduction furnace.As a result, by using coil generate alternating magnetic field maintain furnace temperature, so as into
One step improves the efficiency that Pb-Zn deposits are smelted.According to a particular embodiment of the invention, 200~400 kilowatts of the line of induction can be used
Circle.
According to still another embodiment of the invention, reducing agent can be coke.Thus, it is possible to further increase Pb-Zn deposits smelting
The efficiency of refining.
According to still another embodiment of the invention, it may further include magnetizer in reducing agent.As a result, in external coil
Under the action of alternating magnetic field of generation, magnetizer can effectively keep the stabilization of in-furnace temperature, so as to further increase lead
The efficiency that zinc ore is smelted.
According to still another embodiment of the invention, magnetizer can be graphite.Inventor has found that graphite can effectively be led
Magnetic, and impurity will not be introduced to subsequent reactions, so as to further increase the efficiency of Pb-Zn deposits smelting.
According to one embodiment of present invention, graphite can be the 10~50% of reducing agent quality.Thus, it is possible to further
Improve the efficiency that Pb-Zn deposits are smelted.Inventors have found that being insufficient to allow the temperature restored in space if the ratio of graphite is too small
Stablize, if the ratio of graphite is excessive, will affect the efficiency of reduction treatment.
According to still another embodiment of the invention, liquid lead is discharged by siphon port.Thus, it is possible to further increase lead zinc
The efficiency of mining and metallurgy refining.
S300: zinc flue gas will be contained and condensed
In this step, flue gas containing zinc obtained in power frequency electric reduction furnace is condensed, so as to obtain liquid Zn and
Coal gas.According to one embodiment of present invention, it can use the condensation that zinc rain condenser carries out Pb-Zn deposits smelting to flue gas containing zinc.
The metallic zinc carried in flue gas containing zinc can be condensed out using zinc rain as a result, and the carbon monoxide wherein carried or/and two
Carbonoxide continuation exists in a gaseous form, and is further recycled in the form of coal gas after washing, purifying.
It utilizes the equipment of the embodiment of the present invention smelted for Pb-Zn deposits to implement Pb-Zn deposits smelting process as a result, does not need
Pb-Zn deposits are sorted, directly by Pb-Zn deposits after oxidizing fusion, are supplied under high-temperature fusant state to power frequency electrothermal reduction
Furnace, in the furnace body, zinc oxide can be reduced to metal zinc fume by pyrocarbon, further obtain liquid metal by condensation
Zinc.Into the lead oxide in furnace body, liquid metal lead is reduced to by pyrocarbon, is formed with oxides such as iron, silicon, calcium, aluminium, magnesium
Liquid lead skim drops to straight well formula power frequency electrothermal furnace lower part expansion chamber together.The separation of slag lead is carried out in expansion chamber.By under expansion chamber
Portion's discharge port releases metallic lead.According to an embodiment of the invention, clinker, furnace slag granulating can be released by expansion chamber top discharge port
It is outer afterwards to sell.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or spy described in conjunction with this embodiment or example
Point is included at least one embodiment or example of the invention.In the present specification, schematic expression of the above terms are not
Centainly refer to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be any
One or more embodiment or examples in can be combined in any suitable manner.
Although the embodiments of the present invention has been shown and described above, it is to be understood that above-described embodiment is example
Property, it is not considered as limiting the invention, those skilled in the art are not departing from the principle of the present invention and objective
In the case where can make changes, modifications, alterations, and variations to the above described embodiments within the scope of the invention.
Claims (5)
1. a kind of equipment smelted for Pb-Zn deposits characterized by comprising
Oxidizing semlting furnace, the oxidizing semlting stove have Pb-Zn deposits entrance, flux entrance, melting exhanst gas outlet and melt outlet,
The melt contains zinc oxide and lead oxide；
Power frequency electric reduction furnace, the power frequency electric reduction furnace have melt inlet, reducing agent entrance, liquid lead outlet, clinker
Outlet and exhanst gas outlet containing zinc, the melt inlet are connected with the melt outlet；And
Zinc rain condenser, the zinc rain condenser have smoke inlet containing zinc, liquid Zn outlet and gas exit, the cigarette containing zinc
Gas entrance is connected with the exhanst gas outlet containing zinc,
Wherein, the power frequency electric reduction furnace includes vertical reduction section and Horizontal sedimentation section, and the vertical reduction section and institute
It states and is provided with coil on the outer wall of Horizontal sedimentation section, the lower end passage of the vertical reduction section is upper with the Horizontal sedimentation section
End channel is connected, and the lower end passage of the vertical reduction section tilts upward,
The reducing agent entrance supplies the reducing agent containing coke and graphite, the graphite be the reducing agent quality 10~
50%,
By siphon port, the melt is input in the power frequency electric reduction furnace, liquid lead is discharged by siphon port, it is described
Reducing agent inlet is provided with double-charging bell feeder.
2. equipment according to claim 1, which is characterized in that it further include waste heat boiler, the smoke inlet of the waste heat boiler
It is connected with the melting exhanst gas outlet.
3. equipment according to claim 2, which is characterized in that further include deduster, the import of the deduster with it is described
The outlet flue of waste heat boiler is connected.
4. equipment according to claim 3, which is characterized in that the deduster is electric precipitator.
5. equipment according to claim 1, which is characterized in that the temperature of the melt is at least 900 degrees Celsius.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610439929.3A CN105907988B (en) | 2016-06-17 | 2016-06-17 | The equipment smelted for Pb-Zn deposits |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610439929.3A CN105907988B (en) | 2016-06-17 | 2016-06-17 | The equipment smelted for Pb-Zn deposits |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105907988A CN105907988A (en) | 2016-08-31 |
| CN105907988B true CN105907988B (en) | 2019-05-07 |
Family
ID=56750417
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610439929.3A Active CN105907988B (en) | 2016-06-17 | 2016-06-17 | The equipment smelted for Pb-Zn deposits |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105907988B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112048625A (en) * | 2020-07-16 | 2020-12-08 | 云南驰宏锌锗股份有限公司 | Lead-zinc oxide ore recycling harmless treatment system and method |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103205581A (en) * | 2013-03-11 | 2013-07-17 | 中国恩菲工程技术有限公司 | Bottom blowing smelting electrothermal reduction lead and zinc smelting device |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0324238A (en) * | 1989-06-20 | 1991-02-01 | Dowa Mining Co Ltd | Lead smelting method |
| CN201793692U (en) * | 2010-07-20 | 2011-04-13 | 中国恩菲工程技术有限公司 | Zinc concentrate smelting device |
| CN101899580B (en) * | 2010-07-20 | 2012-03-14 | 中国恩菲工程技术有限公司 | Zinc concentrate smelting equipment |
| CN203187731U (en) * | 2013-03-11 | 2013-09-11 | 中国恩菲工程技术有限公司 | Equipment for smelting lead and zinc by bottom blowing smelting and electrothermal reduction |
| CN103205582A (en) * | 2013-03-11 | 2013-07-17 | 中国恩菲工程技术有限公司 | Bottom blowing smelting electrothermal reduction lead and zinc smelting process |
| CN203498450U (en) * | 2013-09-10 | 2014-03-26 | 中国恩菲工程技术有限公司 | Side-blown reducing lead-zinc smelting equipment |
| CN103451446A (en) * | 2013-09-10 | 2013-12-18 | 中国恩菲工程技术有限公司 | Smelting side-blowing reduction lead-zinc smelting device |
| CN105671314A (en) * | 2016-04-20 | 2016-06-15 | 长沙有色冶金设计研究院有限公司 | Direct smelting method and system for producing metallic lead and zinc at the same time |
| CN205687989U (en) * | 2016-06-17 | 2016-11-16 | 中国恩菲工程技术有限公司 | The equipment smelted for Pb-Zn deposits |
-
2016
- 2016-06-17 CN CN201610439929.3A patent/CN105907988B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103205581A (en) * | 2013-03-11 | 2013-07-17 | 中国恩菲工程技术有限公司 | Bottom blowing smelting electrothermal reduction lead and zinc smelting device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105907988A (en) | 2016-08-31 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105925805B (en) | Pb-Zn deposits smelting process | |
| CN101970699B (en) | Method for separation of zinc and extraction of iron values from iron ores with high concentration of zinc | |
| CN106676281A (en) | Process for comprehensively recycling copper and iron through ore phase restructuring of copper smelting molten slag | |
| CN106048254A (en) | Continuous smelting device and method of nickel-containing material | |
| CN105087956B (en) | Smelting furnace for continuously smelting blister copper through copper sulfide concentrate and smelting method of smelting furnace | |
| CN107488791A (en) | Copper smelting apparatus | |
| CN105154659A (en) | Method for synchronously extracting iron and niobium from Bayan Obo low-grade ores | |
| CN111411234A (en) | Jet smelting electrothermal reduction furnace and method for smelting zinc-containing material | |
| CN106676269A (en) | Method for treating cyanide tailings | |
| CN105925813A (en) | Vanadium slag comprehensive treatment method and application thereof | |
| CN105838838A (en) | Method for preparing pure steel by coal gas direct reduction one-step method | |
| CN105969978B (en) | The system and method for preparing ferrochrome | |
| CN106521139A (en) | Method for preparing high titanium slag through low temperature reduction and separation of titanium-containing iron ore | |
| CN111440957A (en) | System and method for treating zinc concentrate and zinc slag | |
| CN101603141B (en) | Method for producing ferronickel by utilizing low-magnesium intermediate type laterite nickel ore | |
| CN205687989U (en) | The equipment smelted for Pb-Zn deposits | |
| CN105907988B (en) | The equipment smelted for Pb-Zn deposits | |
| CN110129507A (en) | The method of smelting and smelting apparatus of iron-based polymetallic ore material | |
| CN106086463B (en) | The smelting equipment of Pb-Zn deposits | |
| CN106086464B (en) | The smelting equipment of Pb-Zn deposits | |
| CN104762490A (en) | Gold concentrate slagging smelting gold extraction method | |
| CN206089768U (en) | Lead zinc ore 's melting equipment | |
| CN206089776U (en) | Lead zinc ore 's melting equipment | |
| CN206089775U (en) | Lead zinc ore 's melting equipment | |
| KR101494256B1 (en) | System for Recovering Valuable Metal |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |