CN206256123U - Zinc goes out the processing system of phase analysis - Google Patents
Zinc goes out the processing system of phase analysis Download PDFInfo
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- CN206256123U CN206256123U CN201621334408.3U CN201621334408U CN206256123U CN 206256123 U CN206256123 U CN 206256123U CN 201621334408 U CN201621334408 U CN 201621334408U CN 206256123 U CN206256123 U CN 206256123U
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- zinc
- leaching residue
- zinc leaching
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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
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- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
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Abstract
The utility model discloses the processing system that zinc goes out phase analysis.The processing system of the zinc leaching residue includes：Zinc leaching residue is processed using revolving bed；Zinc leaching residue after the roasting and reduction coal and water are carried out into mixed processing, to obtain mixed material；The mixed material is carried out into pelletizing treatment, to obtain mixing pelletizing；Reducing and smelting treatment is carried out to the mixing pelletizing using rotary hearth furnace, to obtain zinc powder dirt, dezincification pelletizing, metallized pellet and lead powder dirt；The metallized pellet is carried out into mill ore magnetic selection treatment, to obtain iron product.The sulphur in zinc leaching residue can be effectively removed using the system, many metal synthetical recoveries are realized, and the quality of the iron powder for obtaining is high.
Description
Technical field
The utility model is related to zinc to go out the processing system of phase analysis.
Background technology
In various zinc metallurgy methods, zinc hydrometallurgy has comparative advantage, next to that closed blast furnace zinc metallurgy, horizontal retort zinc metallurgy by
Eliminate, zinc vertical retorting and electrothermal way zinc metallurgy only occupy certain proportion.From in terms of development trend, six the seventies closed blast furnaces were once obtained
Must develop rapidly, zinc vertical retorting develops to maximization direction.Zinc hydrometallurgy be intended to now maximization, serialization, mechanization and
Automation.The above method all just automatically controlling using electronic computer implementation process, pay attention to the synthetical recovery of valuable metal.Eight
Since the ten's, injection zinc metallurgy receives the very big concern of countries in the world, has been enter into the pilot-plant test stage.If can be successful, will be right
World's zinc metallurgy industrial expansion exerts far reaching influence.How the recycling to the valuable metal such as zinc, lead in zinc leaching residue, and
The extraction of iron is the important research direction of domestic and international metallargist's research.
Traditional zinc leaching residue handling process has rotary kiln handling process and hot acid extract technology, and rotary kiln treatment zinc is leached
Slag be leached mud is allocated into more than 40% coal dust, the reduction roasting under 1250-1350 DEG C of temperature conditionss, the valuable metal such as lead zinc
Volatilization is reduced, the PROCESS FOR TREATMENT zinc leaching residue has a series of shortcomings such as lead Zinc volatilization rate is low, energy consumption is high.Hot acid extract technology
Treatment zinc leaching residue has the shortcomings that long flow path, equipment are complicated, it is big to invest.And rotary kiln technology and the treatment of hot acid extract technology
The kiln slag and iron vitriol slag produced during zinc leaching residue are likely to result in secondary pollution, and the poor circulation for " raw useless to give up " easily occur shows
As.
Thus, zinc leaching residue processing system has much room for improvement.
Utility model content
The utility model is intended at least solve one of technical problem present in prior art.Therefore, of the present utility model
One purpose is to propose that a kind of zinc goes out the processing system of phase analysis, in can effectively removing zinc leaching residue using the system
Sulphur, realizes many metal synthetical recoveries, and the quality of the iron powder for obtaining is high.
According to one side of the present utility model, the utility model provides the processing system that a kind of zinc goes out phase analysis.According to
Embodiment of the present utility model, the system includes：
Revolving bed, the revolving bed sets gradually the first feed zone, crystallization water volatilization area, desulfurization zone along Flow of Goods and Materials direction
With the first discharge zone, the crystallization water volatilization area is with the first volatilization flue, and the desulfurization zone has the second volatilization flue, described
Feed zone has zinc leaching residue entrance, and the discharge zone has the zinc leaching residue outlet after roasting；
Batch mixer, the batch mixer has the zinc leaching residue entrance after roasting, reduction coal entrance, water inlet and mixed material
Outlet, the zinc leaching residue entrance after the roasting is connected with the zinc leaching residue outlet after the roasting；
Ball press, the ball press has mixed material entrance and mixing pelletizing outlet, the mixed material entrance and institute
Mixed material outlet is stated to be connected；
Rotary hearth furnace, the rotary hearth furnace sets gradually the second feed zone, volatilization area, reducing zone and second along Flow of Goods and Materials direction
Discharge zone, second feed zone has mixing pelletizing entrance, and the volatilization area has the 3rd volatilization flue, the reducing zone tool
There is the 4th volatilization flue, there is metallized pellet to export for second discharge zone, the mixing pelletizing entrance mixes ball with described
Group's outlet is connected；
There is mill ore magnetic selection machine, the mill ore magnetic selection machine metallized pellet entrance and iron product to export, the metallization ball
Group's entrance is connected with metallized pellet outlet.
Zinc according to the utility model embodiment goes out the processing system of phase analysis, and the first feed zone, knot are set in revolving bed
Brilliant water volatilization area, desulfurization zone and the first discharge zone, the substep removing of the crystallization water and sulphur are carried out to zinc leaching residue, after being calcined
Zinc leaching residue, it is to avoid sulphur and crystallization water shape sulfuric acid in sulphur subtractive process, etching apparatus, and first take off the sulphur in zinc leaching residue
Remove, can effectively reduce the sulfur content during rotary hearth furnace is collected into oxide powder and zinc, improve the quality of iron powder and zinc oxide dust.
Then, reducing and smelting treatment will be carried out in the rotary hearth furnace of subregion after the zinc leaching residue pelletizing after roasting, the rotary hearth furnace is provided with
Second feed zone, volatilization area, reducing zone and the second discharge zone, the zinc in mixing pelletizing is reclaimed by area of volatilizing, and is made in reducing zone
Ferriferous oxide in mixing pelletizing is reduced into metallic iron, lead and silver wait with simple substance form into flue be oxidized to oxide with
Dust form is reclaimed.Thus, the system realizes the steps of various metals one such as sulphur and zinc, lead and silver during the reducing and smelting of iron
Synthetical recovery, realizes that leached mud is comprehensively utilized, while reducing pollution of the zinc leaching residue to environment.
Optionally, the revolving bed is further included：Radiant tube, radiant tube is arranged on the top of revolving bed inner body wall.
Optionally, the revolving bed is further included：Multiple heat-accumulating burners, the multiple heat-accumulating burner is respectively provided with
At the two ends of the radiant tube.
Optionally, the heat-accumulating burner positioned at the two ends of the radiant tube is using periodically alternately accumulation of heat and burning
Mode is heated.
Optionally, the system is further included：There is disintegrating machine, the disintegrating machine zinc leaching residue agglomerate entrance and zinc to leach
Solid impurity particle is exported, and the zinc leaching residue particle outlet is connected with the zinc leaching residue entrance of the revolving bed.
Optionally, the revolving bed is further included：First temperature controller, first temperature controller is arranged on institute
The crystallization water volatilization area of revolving bed is stated, the temperature for controlling the crystallization water volatilization area is 400-500 degrees Celsius；Second temperature
Controller, the second temperature controller is arranged on the desulfurization zone of the revolving bed, and the temperature for controlling the desulfurization zone is
650-950 degrees Celsius.
Optionally, the rotary hearth furnace is further included：3rd temperature controller, the 3rd temperature controller is arranged on institute
The volatilization area of rotary hearth furnace is stated, the temperature for controlling the volatilization area is 920-1000 degrees Celsius；4th temperature controller, it is described
4th temperature controller is arranged on the reducing zone of the rotary hearth furnace, controls the temperature of the reducing zone for 1250-1280 takes the photograph
Family name's degree.
Additional aspect of the present utility model and advantage will be set forth in part in the description, partly by from following description
In become obvious, or by it is of the present utility model practice recognize.
Brief description of the drawings
Of the present utility model above-mentioned and/or additional aspect and advantage will from description of the accompanying drawings below to embodiment is combined
Become substantially and be readily appreciated that, wherein：
Fig. 1 shows the schematic flow sheet of the processing method for going out phase analysis according to the zinc of the utility model one embodiment；
Fig. 2 shows the structural representation of the processing system for going out phase analysis according to the zinc of the utility model one embodiment；
Fig. 3 shows the structural representation of the processing system for going out phase analysis according to the zinc of the utility model another embodiment；
Fig. 4 shows the structural representation of the revolving bed according to the utility model one embodiment；
Fig. 5 shows the structural representation of the rotary hearth furnace according to the utility model one embodiment；
Fig. 6 shows the schematic flow sheet of the processing method for going out phase analysis according to the zinc of the utility model one embodiment.
Specific embodiment
Embodiment of the present utility model is described below in detail, the example of the embodiment is shown in the drawings, wherein ad initio
Same or similar element or element with same or like function are represented to same or similar label eventually.Below by ginseng
The embodiment for examining Description of Drawings is exemplary, is only used for explaining the utility model, and it is not intended that to of the present utility model
Limitation.
In description of the present utility model, term " longitudinal direction ", " transverse direction ", " on ", D score, "front", "rear", "left", "right",
The orientation or position relationship of the instruction such as " vertical ", " level ", " top ", " bottom " be based on orientation shown in the drawings or position relationship,
Be for only for ease of description the utility model rather than require the utility model must with specific azimuth configuration and operation, therefore
It is not intended that to limitation of the present utility model.
It should be noted that term " first ", " second " are only used for describing purpose, and it is not intended that indicating or implying phase
To importance or the implicit quantity for indicating indicated technical characteristic.Thus, " first " is defined, the feature of " second " can be with
Express or implicitly include one or more this feature.Further, in description of the present utility model, unless otherwise
Illustrate, " multiple " is meant that two or more.
According to one side of the present utility model, the utility model provides a kind of processing system of zinc leaching residue.With reference to
Fig. 2, according to embodiment of the present utility model, the system includes：Revolving bed 100, batch mixer 200, ball press 300, rotary hearth furnace 400
With mill ore magnetic selection machine 500.The processing system of the zinc leaching residue according to the utility model embodiment, setting first is entered in revolving bed
Material area, crystallization water volatilization area, desulfurization zone and the first discharge zone, the substep removing of the crystallization water and sulphur is carried out to zinc leaching residue, is obtained
Zinc leaching residue after roasting, it is to avoid sulphur and crystallization water shape sulfuric acid in sulphur subtractive process, etching apparatus, and first by zinc leaching residue
Sulphur removing, can effectively reduce the sulfur content during rotary hearth furnace is collected into oxide powder and zinc, improve iron powder and zinc oxide dust
Quality.Then, reducing and smelting treatment will be carried out in the rotary hearth furnace of subregion after the zinc leaching residue pelletizing after roasting, the rotary hearth furnace
The second feed zone, volatilization area, reducing zone and the second discharge zone are provided with, the zinc in mixing pelletizing are reclaimed by area of volatilizing, also
Former area makes the ferriferous oxide in mixing pelletizing be reduced into metallic iron, and lead and silver etc. are oxidized to oxygen with simple substance form into flue
Compound is reclaimed with dust form.Thus, the system realizes the various metals such as sulphur and zinc, lead and silver during the reducing and smelting of iron
One step synthetical recovery, realizes that leached mud is comprehensively utilized, while reducing pollution of the zinc leaching residue to environment.
For the ease of understanding the system, each device in the system is explained one by one below：
Revolving bed 100：With reference to Fig. 4, according to embodiment of the present utility model, the revolving bed 100 along Flow of Goods and Materials direction according to
Secondary setting the first feed zone 110, crystallization water volatilization area 120, the discharge zone 140 of desulfurization zone 130 and first, crystallization water volatilization area 120
With the first volatilization flue 121, desulfurization zone 130 has the second volatilization flue 131, and the first feed zone 110 enters with zinc leaching residue
Mouthful, the first discharge zone 140 has the zinc leaching residue outlet after roasting.Zinc leaching residue is fed by the first feed zone 110；Crystallized water
Volatilization area 120 carries out crystallization water volatilization treatment, obtains being dehydrated slag charge and vapor；Dehydration slag charge enters back into desulfurization zone 130 to be carried out
Desulfurization process, the zinc leaching residue after being calcined；Zinc leaching residue after the roasting is discharged by the first discharge zone 140.In revolving bed
The substep removing of the crystallization water and sulphur, the zinc leaching residue after being calcined, it is to avoid in sulphur subtractive process are carried out in 100 to zinc leaching residue
Sulphur and crystallization water shape sulfuric acid, etching apparatus, and the sulphur removing in zinc leaching residue can effectively first be reduced into rotary hearth furnace collection
Sulfur content in oxide powder and zinc, improves the quality of iron powder and zinc oxide dust.
With reference to Fig. 3, according to embodiment of the present utility model, the system is further included：Disintegrating machine 600, the disintegrating machine 600
With zinc leaching residue agglomerate entrance and zinc leaching residue particle outlet, wherein, zinc leaching residue particle outlet soaks with the zinc of revolving bed 100
Entrance of slagging tap is connected, and break process is carried out to zinc leaching residue agglomerate using disintegrating machine, obtains zinc leaching residue particle.According to this practicality
New embodiment, the particle diameter of zinc leaching residue particle is not more than 1 millimeter.If the particle diameter of zinc leaching residue particle is too thick, coarse granule
Easy formation is mutually wrapped up, and influences the removing of sulphur.When the particle diameter of zinc leaching residue particle is not more than 1 millimeter, the removal efficiency of sulphur
Height, effect is good.
If the too high levels of the crystallization water of zinc leaching residue, drying and processing is carried out before revolving bed being entered, zinc is leached
Slag is dried to moisture less than 2%, and the zinc leaching residue after drying is in caking state, granularity be substantially distributed in 0.074mm-100mm it
Between, the zinc leaching residue after drying further can be crushed to below 1mm, make zinc leaching residue be easy to be dehydrated desulfurization.
According to embodiment of the present utility model, revolving bed 100 is further included：First temperature controller, first temperature
Controller is arranged on the crystallization water volatilization area 120 of revolving bed 100, and the temperature for controlling the crystallization water volatilization area 120 is 400-500
Degree Celsius.In the temperature range, it is ensured that the crystallization water fully volatilizees on the premise of removing, and sulphur is not removed.
According to embodiment of the present utility model, revolving bed 100 is further included：Second temperature controller, the second temperature
Controller is arranged on the desulfurization zone 130 of revolving bed 100, and the temperature for controlling desulfurization zone 130 is 650-950 degrees Celsius.Zinc leaching residue
In sulphur major part in the form of zinc sulfate, zinc sulphide, elemental sulfur exist, wherein, zinc sulfate can just be decomposed more than 500 DEG C
It is zinc oxide and sulfur trioxide, zinc sulphide can just be oxidized to zinc oxide generation sulfur dioxide more than 600 DEG C, and elemental sulfur exists
Sulfur dioxide easily is easily oxidized under conditions of more than 500 DEG C, thus, the temperature of desulfurization process is 650-950 degrees Celsius, is protected
Most of sulphur in card zinc leaching residue is oxidized removing.According to embodiment of the present utility model, in revolving bed in zinc leaching residue
The sulfur removal rate of desulfurization zone is up to more than 99%, and the zinc leaching residue sulfur content being calcined by revolving bed can drop to less than 1%.Root
According to embodiment of the present utility model, sulfur trioxide that desulfurization is obtained, sulfur dioxide can carry out profit by flue into acid making system
With, the comprehensive utilization of zinc leaching residue is realized, reduce pollution of the zinc leaching residue to environment.
According to embodiment of the present utility model, the revolving bed 100 is further included：Radiant tube, the radiant tube is arranged on rotation
The top of rotated bed inner body wall.Thus, heated using radiant tube, heating-up temperature stabilization, it is easy to control.
According to embodiment of the present utility model, the revolving bed 100 is further included：Multiple heat-accumulating burners, the plurality of storage
Hot type burner is separately positioned on the two ends of radiant tube.
According to embodiment of the present utility model, the heat-accumulating burner positioned at the two ends of radiant tube is using periodically alternately accumulation of heat
Mode with burning is heated.Thus, if using radiant tube to can guarantee that the atmosphere in burner hearth is oxidizing atmosphere, contribute to
The volatilization of desulfurization
Batch mixer 200：According to embodiment of the present utility model, the batch mixer has the zinc leaching residue entrance after roasting, goes back
The outlet of raw coal entrance, water inlet and mixed material, wherein, the zinc leaching residue entrance after roasting is exported with the zinc leaching residue after roasting
It is connected.Thus, in follow-up reducing and smelting treatment, the metal oxides such as iron in zinc leaching residue are gone back using reduction coal
It is former.
According to embodiment of the present utility model, zinc leaching residue and reduction coal and water in mass ratio 100：(12-18)：(8-12)
Carry out the mixed processing.Thus, while reduction coal is fully reduced the oxide of zinc leaching residue, it is to avoid reduction coal is remaining,
The wasting of resources is caused, and influences the purity of product.Additionally, obtaining mixed material in the ratio is easy to pelletizing.
According to embodiment of the present utility model, the average grain diameter of reduction coal is 0.1-1.0 millimeters.If the particle diameter of reduction coal
Can slightly influence very much Carbon diffusion in reduction process, and if reduction coal can carefully increase very much processing cost.It is average when reduction coal
Particle diameter be 0.1-1.0 millimeters when, not only Carbon diffusion is good in follow-up reduction process, and reduction coal crushing cost
It is low.
Ball press 300：According to embodiment of the present utility model, the ball press 300 has mixed material entrance and mixing ball
Group's outlet, wherein, mixed material entrance is connected with mixed material outlet.Thus, the suitable mixing of particle diameter is obtained using ball press
Pelletizing, is easy to subsequently carry out reducing and smelting treatment in rotary hearth furnace.
According to specific embodiment of the utility model, the ball press 300 is to roll-in ball machine.Thus, pelletizing effect is good, and
And device is cheap.
Rotary hearth furnace 400：With reference to Fig. 5, according to embodiment of the present utility model, the rotary hearth furnace 400 along Flow of Goods and Materials direction according to
The second feed zone 410 of secondary setting, volatilization area 420, the discharge zone 440 of reducing zone 430 and second, the second feed zone 410 have mixing
Pelletizing entrance, volatilization area 420 has the 3rd volatilization flue 421, and reducing zone 430 has the 4th volatilization flue 422, the second discharge zone
440 with metallized pellet outlet, wherein, mixing pelletizing entrance is connected with mixing pelletizing outlet.Mixing pelletizing is by the second charging
Area feeds；Through volatilizing, area carries out volatilization treatment, obtains zinc powder dirt and dezincification pelletizing；Dezincification pelletizing carries out reduction smelting into reducing zone
Refining is processed, and obtains metallized pellet and lead powder dirt；Metallized pellet is discharged through second discharge zone.Thus, pelletizing will be mixed
Reducing and smelting treatment is carried out in the rotary hearth furnace of subregion afterwards, the zinc in mixing pelletizing is reclaimed by area of volatilizing, make to mix in reducing zone
Close the ferriferous oxide in pelletizing and be reduced into metallic iron, lead and silver etc. are oxidized to oxide with powder with simple substance form into flue
Dirt form is reclaimed.Thus, various gold such as sulphur and zinc, lead and silver are realized during the reducing and smelting of iron using the rotary hearth furnace of subregion
Belong to a step synthetical recovery, realize that leached mud is comprehensively utilized, while reducing pollution of the zinc leaching residue to environment.According to this practicality
New embodiment, degree of metalization can be obtained more than 85% by rotary hearth furnace reduction, and lead zinc removal efficiency is more than 90%, silver removing
Rate is more than 80%, metallized pellet of the sulfur content less than 0.5%.
According to embodiment of the present utility model, rotary hearth furnace 400 is further included：3rd temperature controller, the 3rd temperature
Controller is arranged on the volatilization area 420 of rotary hearth furnace 400, and the temperature for controlling the volatilization area 420 is 920-1000 degrees Celsius.Zinc is leached
The thing that is primarily present of zinc is mutually zinc ferrite in slag, and zinc ferrite is reduced coal and is reduced into zinc oxide when temperature is more than 600 DEG C,
Zinc oxide is reduced into simple substance zinc by carbon, meanwhile, under the strong reducing property atmospheric condition in volatilization area, lead oxide is reduced into metal
Lead, but metallic lead is not volatile before 1000 DEG C.Thus, when the temperature of volatilization treatment is 920-1000 degrees Celsius, zinc leaching
The metal oxide of zinc and lead in slagging tap is reduced, and zinc volatilization is reclaimed, and lead is non-volatile, it is to avoid zinc and lead volatilize simultaneously
The two is not readily separated.
According to some embodiments of the present utility model, volatilization area 420 is heated using radiant tube.Thus, heating-up temperature
Stabilization, it is easy to control.
According to embodiment of the present utility model, rotary hearth furnace 400 is further included：4th temperature controller, the 4th temperature
Controller is arranged on the reducing zone 430 of rotary hearth furnace 400, and the temperature for controlling reducing zone 430 is 1250-1280 degrees Celsius.Thus, iron
Oxide is reduced into metallic iron, and lead silver is volatilized under this condition, and oxide is oxidized to powder into flue with simple substance form
Dirt form is collected.
According to embodiment of the present utility model, the second discharge zone 440 is provided with spiral discharging machine, is easy to metallized pellet to arrange
Go out.
Mill ore magnetic selection machine 500：According to embodiment of the present utility model, the mill ore magnetic selection machine 500 enters with metallized pellet
Mouth and iron product outlet, wherein, metallized pellet entrance is connected with metallized pellet outlet, and metallized pellet is carried out into ore grinding magnetic
Choosing is processed, and obtains iron product.Due to being stripped of sulphur before reducing and smelting, the sulfur content in metallized pellet is very low, mill ore magnetic selection
The quality of the iron powder for obtaining is high.According to embodiment of the present utility model, mill ore magnetic selection treatment can obtain sulfur content and be less than
0.04% metal iron powder.
For the ease of understanding that foregoing zinc goes out the processing system of phase analysis, a kind of foregoing zinc of utilization is provided herein and phase analysis
The method that processing system treatment zinc goes out phase analysis.With reference to Fig. 1, according to embodiment of the present utility model, the treatment of phase analysis is gone out to the zinc
Method is explained, and the method includes：
S100 substep dehydration desulfurization
According to embodiment of the present utility model, zinc leaching residue is processed using revolving bed, the revolving bed is along material stream
Dynamic direction sets gradually the first feed zone, crystallization water volatilization area, desulfurization zone and the first discharge zone, and zinc leaching residue is by the first feed zone
Charging；Crystallized water volatilization area carries out crystallization water volatilization treatment, obtains being dehydrated slag charge and vapor；Dehydration slag charge enters back into desulfurization
Area carries out desulfurization process, the zinc leaching residue after being calcined；Zinc leaching residue after the roasting is discharged by the first discharge zone.In rotation
The substep removing of the crystallization water and sulphur, the zinc leaching residue after being calcined, it is to avoid in sulphur subtractive process are carried out in bed to zinc leaching residue
Sulphur and crystallization water shape sulfuric acid, etching apparatus, and the sulphur removing in zinc leaching residue can effectively first be reduced into rotary hearth furnace collection
Sulfur content in oxide powder and zinc, improves the quality of iron powder and zinc oxide dust.
According to embodiment of the present utility model, the particle diameter of zinc leaching residue is not more than 1 millimeter, and the content of the crystallization water is 8-12
Quality %.If the particle diameter of zinc leaching residue is too thick, the easy formation of coarse granule is mutually wrapped up, and influences the removing of sulphur.Work as zinc leaching residue
Particle diameter when being not more than 1 millimeter, the removal efficiency of sulphur is high, and effect is good.Meanwhile, if the crystal water content of zinc leaching residue is too high,
Revolving bed remove the crystallization water high energy consumption, also, the crystallization water easily removing it is incomplete, when the crystallization water content be 8-12 mass %
When, the ratio of the removing of the crystallization water is more thoroughly.
If the too high levels of the crystallization water of zinc leaching residue, drying and processing is carried out before revolving bed being entered, zinc is leached
Slag is dried to moisture less than 2%, and the zinc leaching residue after drying is in caking state, granularity be substantially distributed in 0.074mm-100mm it
Between, the zinc leaching residue after drying further can be crushed to below 1mm, make zinc leaching residue be easy to be dehydrated desulfurization.
According to embodiment of the present utility model, the temperature of crystallization water volatilization treatment is 400-500 degrees Celsius.In the temperature model
In enclosing, it is ensured that the crystallization water fully volatilizees on the premise of removing, and sulphur is not removed.
According to embodiment of the present utility model, the temperature of desulfurization process is 650-950 degrees Celsius.Sulphur in zinc leaching residue is big
Part exists in the form of zinc sulfate, zinc sulphide, elemental sulfur, wherein, zinc sulfate can just be decomposed into zinc oxide more than 500 DEG C
And sulfur trioxide, zinc sulphide can be just oxidized to more than 600 DEG C zinc oxide generation sulfur dioxide, elemental sulfur 500 DEG C with
Sulfur dioxide easily is easily oxidized under conditions of upper, thus, the temperature of desulfurization process is 650-950 degrees Celsius, it is ensured that zinc soaks
Most of sulphur in slagging tap is oxidized removing.According to embodiment of the present utility model, in the desulfurization zone of revolving bed in zinc leaching residue
Sulfur removal rate be up to more than 99%, by revolving bed be calcined zinc leaching residue sulfur content can drop to less than 1%.According to this reality
With new embodiment, sulfur trioxide that desulfurization is obtained, sulfur dioxide can be utilized by flue into acid making system, be realized
The comprehensive utilization of zinc leaching residue, reduces pollution of the zinc leaching residue to environment.
According to embodiment of the present utility model, desulfurization zone is heated using radiant tube.Thus, heating-up temperature stabilization, easily
In control.
S200 mixed processings
According to embodiment of the present utility model, the zinc leaching residue after roasting and reduction coal and water are carried out into mixed processing, obtained
To mixed material.Thus, in follow-up reducing and smelting treatment, the metal oxides such as iron in zinc leaching residue are entered using reduction coal
Row reduction.
According to embodiment of the present utility model, zinc leaching residue and reduction coal and water in mass ratio 100：(12-18)：(8-12)
Carry out the mixed processing.Thus, while reduction coal is fully reduced the oxide of zinc leaching residue, it is to avoid reduction coal is remaining,
The wasting of resources is caused, and influences the purity of product.Additionally, obtaining mixed material in the ratio is easy to pelletizing.
According to embodiment of the present utility model, the average grain diameter of reduction coal is 0.1-1.0 millimeters.If the particle diameter of reduction coal
Can slightly influence very much Carbon diffusion in reduction process, and if reduction coal can carefully increase very much processing cost.It is average when reduction coal
Particle diameter be 0.1-1.0 millimeters when, not only Carbon diffusion is good in follow-up reduction process, and reduction coal crushing cost
It is low.
The treatment of S300 pelletizings
According to embodiment of the present utility model, mixed material is carried out into pelletizing treatment, obtain mixing pelletizing.Thus, mix
The particle diameter of pelletizing is suitable, is easy to subsequently carry out reducing and smelting treatment in rotary hearth furnace.
According to specific embodiment of the utility model, using carrying out the pelletizing treatment, compressing ball to roll-in ball machine
Group's moisture under conditions of 200 DEG C is restored to less than 0.5%, obtains mixing pelletizing.
The treatment of S400 reducing and smeltings
According to embodiment of the present utility model, reducing and smelting treatment is carried out to mixing pelletizing using rotary hearth furnace, the rotary hearth furnace
The second feed zone, volatilization area, reducing zone and the second discharge zone are set gradually along Flow of Goods and Materials direction, mixing pelletizing is by the second charging
Area feeds；Through volatilizing, area carries out volatilization treatment, obtains zinc powder dirt and dezincification pelletizing；Dezincification pelletizing carries out reduction smelting into reducing zone
Refining is processed, and obtains metallized pellet and lead powder dirt；Metallized pellet is discharged through second discharge zone.Thus, pelletizing will be mixed
Reducing and smelting treatment is carried out in the rotary hearth furnace of subregion afterwards, the zinc in mixing pelletizing is reclaimed by area of volatilizing, make to mix in reducing zone
Close the ferriferous oxide in pelletizing and be reduced into metallic iron, lead and silver etc. are oxidized to oxide with powder with simple substance form into flue
Dirt form is reclaimed.Thus, various gold such as sulphur and zinc, lead and silver are realized during the reducing and smelting of iron using the rotary hearth furnace of subregion
Belong to a step synthetical recovery, realize that leached mud is comprehensively utilized, while reducing pollution of the zinc leaching residue to environment.According to this practicality
New embodiment, degree of metalization can be obtained more than 85% by rotary hearth furnace reduction, and lead zinc removal efficiency is more than 90%, silver removing
Rate is more than 80%, metallized pellet of the sulfur content less than 0.5%.
According to embodiment of the present utility model, the temperature for the treatment of of volatilizing is 920-1000 degrees Celsius.Zinc in zinc leaching residue
It is mutually zinc ferrite to be primarily present thing, and zinc ferrite is reduced coal and is reduced into zinc oxide, zinc oxide quilt when temperature is more than 600 DEG C
Carbon is reduced into simple substance zinc, meanwhile, under the strong reducing property atmospheric condition in volatilization area, lead oxide is reduced into metallic lead, but metal
Lead is not volatile before 1000 DEG C.Thus, when the temperature of volatilization treatment is 920-1000 degrees Celsius, the zinc in zinc leaching residue
Metal oxide with lead is reduced, and zinc volatilization is reclaimed, and lead is non-volatile, it is to avoid zinc and lead volatilize simultaneously, and the two is difficult point
From.
According to embodiment of the present utility model, the temperature of reducing and smelting treatment is 1250-1280 degrees Celsius.Thus, iron oxygen
Compound is reduced into metallic iron, and lead silver is volatilized under this condition, and oxide is oxidized to dust into flue with simple substance form
Form is collected.
The treatment of S500 mill ore magnetic selections
According to embodiment of the present utility model, metallized pellet is carried out into mill ore magnetic selection treatment, obtain iron product.Due to
Sulphur is stripped of before reducing and smelting, the sulfur content in metallized pellet is very low, the quality of the iron powder that mill ore magnetic selection is obtained is high.According to this
The embodiment of utility model, mill ore magnetic selection treatment can obtain metal iron powder of the sulfur content less than 0.04%.
Below with reference to specific embodiment, the utility model is illustrated, it is necessary to explanation is, these embodiments are only
It is illustrative, and it is not intended that to limitation of the present utility model.
Embodiment 1
With zinc leaching residue as raw material, process the zinc using the processing system of the zinc leaching residue of the utility model embodiment and leach
Slag, the flow for the treatment of as shown in fig. 6, wherein, the zinc leaching residue iron content 22%, lead 2.53%, zinc 8.28%, Ag80g/t, sulphur
4.25%, the crystallization water 5%, specific method is as follows：
(1) below 1mm will be crushed to after zinc leaching residue drying, be added in revolving bed, revolving bed crystallization water volatilization area
At 450 DEG C, sulphur volatilization area's temperature setting is 680 DEG C to temperature control.By the oxidizing roasting of revolving bed, the crystallization water in zinc leaching
All removings, sulfur content drops to 0.82%.
(2) it is cooled to room temperature by the zinc leaching residue of oxidizing roasting and allocates coal dust coal dust (fixed carbon 84%, ash content 9%) into and presses
Compare 100 according to weight:12 carry out dispensing mixing, and compound adds 8% water, pressure ball is carried out with to roll-in ball machine.Pelletizing is at 200 DEG C
Under conditions of moisture dry to ＜ 0.5%.
(3) pelletizing of drying is stepped into rotary hearth furnace, and the zinc volatilization area of rotary hearth furnace, iron reducing zone temperature are respectively set to 930
DEG C, 1260 ± 10 DEG C, by the reduction of rotary hearth furnace：Zinc volatilization area's flue can be collected into the zinc oxide dust of grade 95%, and iron is waved
Hair area's flue can be collected into leaded and silver-colored dust, the degree of metalization 86% of metallized pellet, sulfur content 0.48%, through overground
Ore deposit magnetic separation finally gives the high-quality iron powder of sulfur content 0.038%.
Embodiment 2
With zinc leaching residue as raw material, process the zinc using the processing system of the zinc leaching residue of the utility model embodiment and leach
Slag, the flow for the treatment of as shown in fig. 6, wherein, the zinc leaching residue iron content 23%, lead 5.62%, zinc 12.39%, Ag127g/t, sulphur
6.73%, the crystallization water 7%, specific method is as follows：
(1) below 1mm will be crushed to after zinc leaching residue drying, be added in revolving bed, revolving bed crystallization water volatilization area
At 460 DEG C, sulphur volatilization area's temperature setting is 750 DEG C to temperature control.By the oxidizing roasting of revolving bed, the crystallization water in zinc leaching
All removings, sulfur content drops to 0.82%.
(2) it is cooled to room temperature by the zinc leaching residue of oxidizing roasting and allocates coal dust coal dust (fixed carbon 84%, ash content 9%) into and presses
Compare 100 according to weight:16 carry out dispensing mixing, and compound adds 10% water, pressure ball is carried out with to roll-in ball machine.Pelletizing is 200
Moisture is dried to ＜ 0.5% under conditions of DEG C.
(3) pelletizing of drying is stepped into rotary hearth furnace, and the zinc volatilization area of rotary hearth furnace, iron reducing zone temperature are respectively set to 950
DEG C, 1260 ± 10 DEG C, by the reduction of rotary hearth furnace：Zinc volatilization area's flue can be collected into the zinc oxide dust of grade 97%, and iron is waved
Hair area's flue can be collected into leaded and silver-colored dust, the degree of metalization 86% of metallized pellet, sulfur content 0.52%, through overground
Ore deposit magnetic separation finally gives the high-quality iron powder of sulfur content 0.032%.
Embodiment 3
With zinc leaching residue as raw material, process the zinc using the processing system of the zinc leaching residue of the utility model embodiment and leach
Slag, the flow for the treatment of is as shown in fig. 6, wherein, the zinc leaching residue contains 25%, lead 7.69%, zinc 18.36%, Ag173g/t, sulphur
11.28%, the crystallization water 10%, specific method is as follows：
(1) below 1mm will be crushed to after zinc leaching residue drying, be added in revolving bed, revolving bed crystallization water volatilization area
At 480 DEG C, sulphur volatilization area's temperature setting is 900 DEG C to temperature control.By the oxidizing roasting of revolving bed, the crystallization water in zinc leaching
All removings, sulfur content drops to 0.93%.
(2) it is cooled to room temperature by the zinc leaching residue of oxidizing roasting and allocates coal dust coal dust (fixed carbon 84%, ash content 9%) into and presses
Compare 100 according to weight:18 carry out dispensing mixing, and compound adds 12% water, pressure ball is carried out with to roll-in ball machine.Pelletizing is 200
Moisture is dried to ＜ 0.5% under conditions of DEG C.
(3) pelletizing of drying is stepped into rotary hearth furnace, and the zinc volatilization area of rotary hearth furnace, iron reducing zone temperature are respectively set to 980
DEG C, 1270 ± 10 DEG C, by the reduction of rotary hearth furnace：Zinc volatilization area's flue can be collected into the zinc oxide dust of grade 98%, and iron is waved
Hair area's flue can be collected into leaded and silver-colored dust, the degree of metalization 87% of metallized pellet, sulfur content 0.69%, through overground
Ore deposit magnetic separation finally gives the high-quality iron powder of sulfur content 0.039%.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means to combine specific features, structure, material or spy that the embodiment or example are described
Point is contained at least one embodiment of the present utility model or example.In this manual, to the schematic table of above-mentioned term
State and be not necessarily referring to identical embodiment or example.And, the specific features of description, structure, material or feature can be
Combined in an appropriate manner in one or more any embodiments or example.
While there has been shown and described that embodiment of the present utility model, it will be understood by those skilled in the art that：
In the case where principle of the present utility model and objective is not departed from various changes, modification, replacement can be carried out to these embodiments
And modification, scope of the present utility model limits by claim and its equivalent.
Claims (7)
1. a kind of zinc goes out the processing system of phase analysis, it is characterised in that including：
Revolving bed, the revolving bed sets gradually the first feed zone, crystallization water volatilization area, desulfurization zone and the along Flow of Goods and Materials direction
One discharge zone, the crystallization water volatilization area has the first volatilization flue, and the desulfurization zone has the second volatilization flue, described first
Feed zone has zinc leaching residue entrance, and first discharge zone has the zinc leaching residue outlet after roasting；
There is batch mixer, the batch mixer zinc leaching residue entrance after roasting, reduction coal entrance, water inlet and mixed material to go out
Mouthful, the zinc leaching residue entrance after the roasting is connected with the zinc leaching residue outlet after the roasting；
There is ball press, the ball press mixed material entrance and mixing pelletizing to export, and the mixed material entrance is mixed with described
Material outlet is closed to be connected；
Rotary hearth furnace, the rotary hearth furnace sets gradually the second feed zone, volatilization area, reducing zone and the second discharging along Flow of Goods and Materials direction
Area, second feed zone has mixing pelletizing entrance, and the volatilization area has the 3rd volatilization flue, and the reducing zone has the
There is metallized pellet to export for four volatilization flues, second discharge zone, and the mixing pelletizing entrance goes out with the pelletizing that mixes
Mouth is connected；And
There is mill ore magnetic selection machine, the mill ore magnetic selection machine metallized pellet entrance and iron product to export, and the metallized pellet enters
Mouth is connected with metallized pellet outlet.
2. system according to claim 1, it is characterised in that the revolving bed is further included：
Radiant tube, the radiant tube is arranged on the top of revolving bed inner body wall.
3. system according to claim 2, it is characterised in that the revolving bed is further included：
Multiple heat-accumulating burners, the multiple heat-accumulating burner is separately positioned on the two ends of the radiant tube.
4. system according to claim 3, it is characterised in that positioned at the heat-accumulating burner at the two ends of the radiant tube
Heated by the way of periodicity alternately accumulation of heat and burning.
5. system according to claim 1, it is characterised in that further include：
Disintegrating machine, the disintegrating machine has zinc leaching residue agglomerate entrance and zinc leaching residue particle outlet, the zinc leaching residue particle
Outlet is connected with the zinc leaching residue entrance of the revolving bed.
6. system according to claim 1, it is characterised in that the revolving bed is further included：
First temperature controller, first temperature controller is arranged on the crystallization water volatilization area of the revolving bed, control
The temperature in the crystallization water volatilization area is 400-500 degrees Celsius；
Second temperature controller, the second temperature controller is arranged on the desulfurization zone of the revolving bed, controls described de-
The temperature in sulphur area is 650-950 degrees Celsius.
7. the system according to claim any one of 1-6, it is characterised in that the rotary hearth furnace is further included：
3rd temperature controller, the 3rd temperature controller is arranged on the volatilization area of the rotary hearth furnace, is waved described in control
The temperature for sending out area is 920-1000 degrees Celsius；
4th temperature controller, the 4th temperature controller is arranged on the reducing zone of the rotary hearth furnace, and control is described also
The temperature in former area is 1250-1280 degrees Celsius.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621334408.3U CN206256123U (en) | 2016-12-06 | 2016-12-06 | Zinc goes out the processing system of phase analysis |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621334408.3U CN206256123U (en) | 2016-12-06 | 2016-12-06 | Zinc goes out the processing system of phase analysis |
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| Publication Number | Publication Date |
|---|---|
| CN206256123U true CN206256123U (en) | 2017-06-16 |
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ID=59028474
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621334408.3U Expired - Fee Related CN206256123U (en) | 2016-12-06 | 2016-12-06 | Zinc goes out the processing system of phase analysis |
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| Country | Link |
|---|---|
| CN (1) | CN206256123U (en) |
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2016
- 2016-12-06 CN CN201621334408.3U patent/CN206256123U/en not_active Expired - Fee Related
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