CN205990447U - A kind of reduction reaction system of the aqueous pelletizing of efficient process lateritic nickel ore - Google Patents
A kind of reduction reaction system of the aqueous pelletizing of efficient process lateritic nickel ore Download PDFInfo
- Publication number
- CN205990447U CN205990447U CN201621051886.3U CN201621051886U CN205990447U CN 205990447 U CN205990447 U CN 205990447U CN 201621051886 U CN201621051886 U CN 201621051886U CN 205990447 U CN205990447 U CN 205990447U
- Authority
- CN
- China
- Prior art keywords
- entrance
- rotary hearth
- hearth furnace
- lateritic nickel
- nickel ore
- 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.)
- Expired - Fee Related
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Abstract
This utility model is related to chemical industry metallurgical field and in particular to a kind of System and method for of utilization lateritic nickel ore reduction reaction.For the deficiencies in the prior art, the utility model proposes a kind of reduction reaction system and method for the aqueous pelletizing of efficient process lateritic nickel ore, this system and method is passed through to improve the mode of heating of rotary hearth furnace, pelletizing stoving process before eliminating rotary hearth furnace on the premise of not affecting product index, shorten technological process, reduce equipment investment, there is handling process short, equipment investment is low, equipment operation rate is high, the low advantage of energy consumption, and, described original product of going back recycles through twice, the response rate making lateritic nickel ore increases, thus, this system achieves the high efficiente callback of lateritic nickel ore.
Description
Technical field
This utility model is related to chemical industry metallurgical field.Specifically, this utility model is related to one kind using lateritic nickel ore also
The System and method for of former reaction.
Background technology
Nickel has the advantages that antioxidation, anticorrosive, high temperature resistant, intensity are high, has extensive purposes in modern industry, and
It is mainly used in rustless steel to produce.The nickel resources in the world are broadly divided into nickel sulfide ore and lateritic nickel ore, at present, with available sulfuration
The increasingly depleted of nickel minerals, the exploitation of lateritic nickel ore is increasingly subject to pay attention to.
In current industrial production, what pyrometallurgical smelting lateritic nickel ore was most widely used is RKEF method, and the method is using revolution
Kiln plant carries out prereduction to lateritic nickel ore, and the calcining obtaining is re-fed into ore-smelting electric furnace and is smelted, and finally gives dilval
Product, but the method has the shortcomings that high energy consumption, rotary kiln device easy ring formation big to electric interdependency.
At present, think that in the industry processing lateritic nickel ore method the most economic is Japan's big rivers and mountains method, this method adopts rotary kiln
High temperature reduction roasting output granulated iron：By raw material（Garnierite）After levigate, mix with carbonaceous material and flux limestone, regulation contains
Briquetting after the water yield.Then pass through preheater and agglomerate is continuously fed rotary kiln, in rotary kiln, agglomerate and the produced heat of coal combustion
Gas flow counterflow moves, drying, dehydration, reduction and metal growth, and rotary kiln discharging product carries out water quenching, levigate, with jigging with
The dilval being reduced into is separated from the rotary kiln discharging discharged by magnetic separator, the nickel that this product produces as rustless steel
Source.The not popularization and application of this technology, and there is the intrinsic ring formation problem of rotary kiln device, production is difficult to control to.
Based on the inherent shortcoming of rotary kiln device, in recent years, some experts and scholar propose " with coal base rotary hearth furnace in the industry
The new method of process lateritic nickel ore ", reduction process completes, specially in rotary hearth furnace：First ore deposit, coal, flux etc. are mixed
It is distributed into rotary hearth furnace again, during rotary hearth furnace reduction, furnace roof, side wall maintain static, pelletizing after the pretreatment such as material, ball processed, drying
It is distributed into rotary hearth furnace from cloth end, furnace bottom drives the rear pelletizing that pelletizing rotates a circle in stove to be reduced, and via discharge end row
Go out body of heater, the pelletizing after reduction carries out melting or physical separation again.Wherein, it is divided into charging and discharging area and burning in rotary hearth furnace
Area, combustion zone outboard sidewalls are furnished with the burner of varying number, the combustion gas sent into by pipeline（Low-heat value gas can be adopted）Join and help
The temperature to control not same district for the heat that combustion air burning produces.At present, rotary hearth furnace pan feeding mostly be dried carbonaceous pelletizing and
Non- powder or wet bulb group（As patent CN 102912209 B）, this is because：（1）Powder enters stove and is easily caused burner blocking；（2）If
Wet bulb group directly enter stove can under the high temperature conditions fragmentation and in stove produce dust, under furnace gas perturbation action, can cause
Burner blocks, and makes production be unable to direct motion.It can be seen that, the series of preprocessing " batch mixing-ball-drying processed " before rotary hearth furnace reduction is with now
The necessary pre-treatment step of some rotary hearth furnace coordinative composition of equipments, but which results in the big defect of pretreatment process length, equipment investment, have
Treat further to improve.
Utility model content
For the deficiencies in the prior art, the utility model proposes a kind of reduction of the aqueous pelletizing of efficient process lateritic nickel ore is anti-
Answer system and method, this system and method is passed through to improve the mode of heating of rotary hearth furnace, goes on the premise of not affecting product index
Fall the pelletizing stoving process before rotary hearth furnace, shortened technological process, reduce equipment investment, had that handling process is short, set
The advantage that standby investment is low, equipment operation rate is high, energy consumption is low.
For solving above-mentioned technical problem, the technical solution adopted in the utility model is：
This utility model provides a kind of reduction reaction system of the aqueous pelletizing of efficient process lateritic nickel ore, and its feature exists
In, including：Mixing device, ball-making device, rotary hearth furnace device, broken jigging sorting unit and mill ore magnetic selection device, wherein：
Described mixing device includes：Lateritic nickel ore entrance, reducing agent entrance, limestone entrance, additive entrance and mixing
Material outlet, described mixing device is used for being mixed described lateritic nickel ore, reducing agent, limestone and additive, obtains raw material
Mixture；
Described ball-making device includes：Compound entrance, water inlet and aqueous pelletizing outlet, described compound entrance with described
Compound outlet is connected, and described ball-making device is used for for raw mixture carrying out ball processed, obtains aqueous pelletizing；
Described rotary hearth furnace device includes：Adjacent feed zone, drying and preheating area, reducing zone and discharge zone successively, wherein, institute
State feed zone and be provided with aqueous pelletizing entrance, described aqueous pelletizing entrance is exported with described aqueous pelletizing and is connected, and described discharge zone sets
There is reduction products export, described drying and preheating area is provided with multiple drying tubes, described reducing zone furnace wall is provided with multiple burners；Described turn
Bottom stove adopts zone heating mode, and described drying and preheating area is heated using described drying tube, and described reducing zone adopts described
Burner is heated；Described rotary hearth furnace device is used for aqueous pelletizing is dried, reduces, and obtains going back original product；
Described broken jigging sorting unit includes：Reduction product inlet, the outlet of granular ferronickel, tailings outlet, described reduction
Product inlet is connected with described reduction products export, and described broken jigging sorting unit is used for going back after original product crushes is jumped
Eliminate staged care, obtain the granular ferronickel of the first product and tailings；
Described mill ore magnetic selection device includes：Tailings entrance, the outlet of powdery ferronickel, mine tailing outlet, described tailings entrance and institute
State tailings outlet be connected, described mill ore magnetic selection device be used for by tailings carry out mill ore magnetic selection process to promote magnetic ferronickel powder with non-
Magnetic stone-like pulse separates, and obtains the second product powdery ferronickel and mine tailing.
Inventor finds, simple according to the system structure of this utility model embodiment, easy to operate, is directly entered using wet bulb
The flow processing lateritic nickel ore of rotary hearth furnace, shortens pretreatment process, reduces production cost and equipment investment.Turn bottom with tradition
Stove is all compared by the way of the heating of furnace wall burner on sidewall, and rotary hearth furnace of the present utility model, by the way of zone heating, solves
A burner susceptible to plugging difficult problem, equipment operation rate is higher it is achieved that the low-temperature reduction of lateritic nickel ore is smelted.The system is not required to also
Original product carries out high melt, and is by physical separation and can get final products, and this process energy consumption is low, low cost.And,
Described original product of going back recycles so that the response rate of lateritic nickel ore increases through twice, and thus, this system achieves red
The high efficiente callback of native nickel minerals.
According to embodiment of the present utility model, the horizontal cross-section of described rotary hearth furnace device is annular, described drying and preheating
The annulus angle 10-150 in area.
According to embodiment of the present utility model, the horizontal cross-section of described rotary hearth furnace device is annular, described reducing zone
Annulus angle 100-300.
The beneficial effects of the utility model are：
（1）The reduction reaction system and method for the aqueous pelletizing of efficient process lateritic nickel ore that this utility model provides, with biography
System rotary hearth furnace is all compared by the way of the heating of furnace wall burner on sidewall, and rotary hearth furnace of the present utility model adopts the side of zone heating
Formula, solves the susceptible to plugging difficult problem of burner.
（2）The reduction reaction system and method for the aqueous pelletizing of efficient process lateritic nickel ore that this utility model provides, with biography
System rotary hearth furnace process is compared, and this utility model rotary hearth furnace burner is not easily blocked, and equipment operation rate is higher.
（3）The reduction reaction system and method for the aqueous pelletizing of efficient process lateritic nickel ore that this utility model provides, adopts
Wet bulb directly enters the flow processing lateritic nickel ore of rotary hearth furnace, shortens pretreatment process, reduces production cost and equipment investment.
（4）The reduction reaction system and method for the aqueous pelletizing of efficient process lateritic nickel ore that this utility model provides, this reality
Obtain two kinds of products with new（The granular ferronickel of first product and the second product powdery ferronickel）, so that valuable metal nickel is fully returned
Receive, nickel recovery up to more than 88%.
（5）This utility model provide the aqueous pelletizing of efficient process lateritic nickel ore reduction reaction system and method, with should
Compared with most commonly used thermal process RKEF method, this utility model is not required to carry out high melt to going back original product, and is by
Physical separation can get final products, and this process energy consumption is low, low cost.
Brief description
Fig. 1 is the structure chart of the reduction reaction system of the aqueous pelletizing of this utility model efficient process lateritic nickel ore.
Fig. 2 is the simple diagram of the reduction reaction system of the aqueous pelletizing of this utility model efficient process lateritic nickel ore.
Fig. 3 is the workflow diagram of the reduction reaction system of the aqueous pelletizing of this utility model efficient process lateritic nickel ore.
Wherein, 10, drying tube, 20, burner, 100, mixing device, 101, lateritic nickel ore entrance, 102, reducing agent entrance,
103rd, limestone entrance, 104, additive entrance, 105, compound outlet, 200, ball-making device, 201, compound entrance, 202,
Water inlet, 203, the outlet of aqueous pelletizing, 300, rotary hearth furnace device, 301, aqueous pelletizing entrance, 302, reduction products export, 400,
Broken jigging sorting unit, 401, reduction product inlet, 402, the outlet of granular ferronickel, 403, tailings outlet, 500, mill ore magnetic selection
Device, 501, tailings entrance, 502, the outlet of powdery ferronickel, 503, mine tailing outlet.
Specific embodiment
In order that those skilled in the art more fully understand the technical solution of the utility model, with reference to specific embodiment
The utility model is described in further detail.The embodiments described below is exemplary, is only used for explaining that this practicality is new
Type, and it is not intended that to restriction of the present utility model.Unreceipted particular technique or condition in embodiment, according in the art
The technology described by document or condition or carry out according to product description.
Fig. 1 is the structure chart of the reduction reaction system of the aqueous pelletizing of this utility model efficient process lateritic nickel ore, and Fig. 2 is this
The simple diagram of the reduction reaction system of the aqueous pelletizing of utility model efficient process lateritic nickel ore, as shown in Figure 1-2, this utility model
A kind of reduction reaction system of the aqueous pelletizing of efficient process lateritic nickel ore providing is it is characterised in that include：Mixing device 100,
Ball-making device 200, rotary hearth furnace device 300, broken jigging sorting unit 400 and mill ore magnetic selection device 500, wherein：Described batch mixing
Device includes：Lateritic nickel ore entrance 101, reducing agent entrance 102, limestone entrance 103, additive entrance 104 and compound go out
Mouth 105, described mixing device is used for being mixed described lateritic nickel ore, reducing agent, limestone and additive, obtains raw material and mixes
Compound；Described ball-making device includes：Compound entrance 201, water inlet 202 and aqueous pelletizing outlet 203, described compound entrance
It is connected with the outlet of described compound, described ball-making device is used for for raw mixture carrying out ball processed, obtains aqueous pelletizing；Described turn
Bottom furnace apparatus include：Adjacent feed zone, drying and preheating area, reducing zone and discharge zone successively, wherein, described rotary hearth furnace adopts and divides
Section mode of heating, described drying and preheating area is heated using described drying tube, and described reducing zone carries out adding using described burner
Heat；Described broken jigging sorting unit includes：Reduction product inlet 401, granular ferronickel outlet 402, tailings outlet 403, described
Reduction product inlet is connected with described reduction products export；Described mill ore magnetic selection device includes：Tailings entrance 501, powdery ferronickel
Outlet 502, mine tailing outlet 503, described tailings entrance is connected with the outlet of described tailings.
Inventor finds, simple according to the system structure of this utility model embodiment, easy to operate, is directly entered using wet bulb
The flow processing lateritic nickel ore of rotary hearth furnace, shortens pretreatment process, reduces production cost and equipment investment.Turn bottom with tradition
Stove is all compared by the way of the heating of furnace wall burner on sidewall, and rotary hearth furnace of the present utility model, by the way of zone heating, solves
A burner susceptible to plugging difficult problem, equipment operation rate is higher it is achieved that the low-temperature reduction of lateritic nickel ore is smelted.The system is not required to also
Original product carries out high melt, and is by physical separation and can get final products, and this process energy consumption is low, low cost.And,
Described original product of going back recycles so that the response rate of lateritic nickel ore increases through twice, and thus, this system achieves red
The high efficiente callback of native nickel minerals.
According to specific embodiment of the utility model, this system includes described rotary hearth furnace device, for doing aqueous pelletizing
Dry, reduction, obtains going back original product, described rotary hearth furnace device includes：Successively adjacent feed zone, drying and preheating area, reducing zone and
Discharge zone.In some embodiments of the present utility model, described feed zone is provided with aqueous pelletizing entrance, described aqueous pelletizing entrance
Export with described aqueous pelletizing and be connected, described aqueous pelletizing entrance is used for adding in described rotary hearth furnace device stove by aqueous pelletizing
Row reaction；Described discharge zone is provided with reduction products export, discharges for going back original product.
According to specific embodiment of the utility model, the concrete shape of described rotary hearth furnace device is not particularly limited, as long as
It is capable of the aqueous pelletizing to lateritic nickel ore and carry out reduction reaction.In some embodiments of the present utility model, described turn
The horizontal cross-section of bottom furnace apparatus is annular, and, the annulus angle shared by each area is not particularly limited.Preferably, described
The annulus angle 10-150 in drying and preheating area, the annulus angle 100-300 of described reducing zone is it is ensured that good reduction is imitated
Really.In some embodiments of the present utility model, described rotary hearth furnace rotates a circle the time for 30min-90min, the choosing in this interval
Take the reduction effect that both can ensure pelletizing, do not result in energy waste again.
According to specific embodiment of the utility model, the mode of heating in the drying and preheating area of described rotary hearth furnace device is not had
The restriction of body, as long as the preheating of the removing of material table water, the removing of lateritic nickel ore water of crystallization and material can be completed.At this
In some embodiments of utility model, described drying and preheating area is heated by the way of drying tube 10, further, described
Drying tube 10 may be mounted at the furnace wall in described drying and preheating area, can arrange multiple drying tubes 10.Of the present utility model one
In a little embodiments, the thermal source of described drying tube may come from coal and prepares gas fitting, natural gas supply device, supply of electric power dress
One or more of put.Coal is prepared gas fitting, natural gas supply device, electric power supply apparatus and all can be dried in advance to rotary hearth furnace
Hot-zone provides effective thermal source, meets the requirement to thermal source for the system.With conventional rotary hearth furnace all using the heating of furnace wall burner on sidewall
Mode is compared, and the drying and preheating area of described rotary hearth furnace device of the present utility model is avoided into stove by the way of drying tube heating
The burner blockage problem at initial stage, the technique that can directly be distributed into rotary hearth furnace using aqueous pelletizing, ensure and produce direct motion.Meanwhile, with biography
The technique that system dry bulb enters rotary hearth furnace is compared, and the aqueous pelletizing before this utility model eliminates rotary hearth furnace dries this flow process, contracting
Short technological process, greatly reduces equipment investment.
According to specific embodiment of the utility model, the mode of heating of the reducing zone of described rotary hearth furnace device is not subject to specifically
Limit, as long as raw material can be heated.In some embodiments of the present utility model, described reducing zone adopts the side of burner 20
Formula is heated, and further, described burner 20 may be mounted at described reducing zone, can arrange multiple burners 20.In this reality
With, in some new embodiments, to pass to pelletizing by the way of the heat of burner combustion generation is by radiant heat transfer.With
Conventional rotary hearth furnace technique is compared, and this utility model rotary hearth furnace burner is not easily blocked, and equipment operation rate is higher.
According to specific embodiment of the utility model, this system also includes described broken jigging sorting unit, for going back
Original product carries out jigging staged care after crushing, and obtains the granular ferronickel of the first product and tailings.In some realities of the present utility model
Apply in example, described broken jigging sorting unit includes：Reduction product inlet, the outlet of granular ferronickel, tailings outlet, described also original
Product entrance is connected with described reduction products export, and described broken jigging sorting unit carries out jigging for going back after original product crushes
Staged care, obtains the granular ferronickel of the first product and tailings.Thus, this system achieves the efficient recovery to lateritic nickel ore, obtains
Arrive ferro-nickel product.
According to specific embodiment of the utility model, this system also includes described mill ore magnetic selection device, for entering tailings
Row mill ore magnetic selection is processed to promote magnetic ferronickel powder to be separated with non magnetic stone-like pulse, obtains the second product powdery ferronickel and mine tailing.?
In some embodiments of the present utility model, described mill ore magnetic selection device includes：Tailings entrance, the outlet of powdery ferronickel, mine tailing outlet,
Described tailings entrance is connected with the outlet of described tailings, and described mill ore magnetic selection device is used for carrying out mill ore magnetic selection process to promote by tailings
So that magnetic ferronickel powder is separated with non magnetic stone-like pulse, obtain the second product powdery ferronickel and mine tailing.Thus, this system achieves to red
The high efficiente callback of native nickel minerals, has obtained ferro-nickel product.
According to embodiment of the present utility model, the lateritic nickel ore in described system, the weight of reducing agent, limestone and additive
Amount proportioning is not particularly limited.In some embodiments of the present utility model, described step（1）In lateritic nickel ore, reduction
The weight proportion of agent, limestone and additive is：Reducing agent addition is 1.0-1.6 times of theoretical addition, the adding of limestone
Add weight is the 0-40% of lateritic nickel ore weight；Additive adds the 0-10% that weight is lateritic nickel ore weight.If the adding of reducing agent
Dosage is too low, can affect the reduction effect of lateritic nickel ore；And if the adding too much of reducing agent, the technology of product can not be improved
Index, and coal resource can be caused to waste, improve production cost.
According to embodiment of the present utility model, the reducing agent in described system and the species of additive are not specifically limited
System, as long as can be used in carrying out reacting.In some embodiments of the present utility model, additive be calcined soda for industry, Borax,
One or more of sulfate, iron powder, sodium chloride, monazite, Vermiculitum；Reducing agent is solid carbon-contg material.Preferably, described
Carbonaceous material can be one or more of semi-coke, coal, white carbon black.Thus, contribute to the carrying out of the reduction reaction of lateritic nickel ore.
In other side of the present utility model, this utility model provide one kind carried out using foregoing system red
The method of the reduction reaction of native nickel minerals, as shown in figure 3, comprise the following steps：
（1）Lateritic nickel ore, reducing agent, limestone and additive addition mixing device is carried out dispensing and mixing treatment, obtains
To raw mixture.
According to embodiment of the present utility model, described system includes mixing device, for by lateritic nickel ore, reducing agent, stone
Lime stone and additive carry out batch mixing and dispensing process, obtain raw mixture.In some embodiments of the present utility model, described
Step（1）In lateritic nickel ore, the weight proportion of reducing agent, limestone and additive be：Reducing agent addition is theoretical interpolation
1.0-1.6 times of amount, the interpolation weight of limestone is the 0-40% of lateritic nickel ore weight；It is lateritic nickel ore that additive adds weight
The 0-10% of weight.Additive is one of calcined soda for industry, Borax, sulfate, iron powder, sodium chloride, monazite, Vermiculitum or several
Kind；Reducing agent is solid carbon-contg material.Preferably, described carbonaceous material can be one or more of semi-coke, coal, white carbon black.
Thus, contribute to the carrying out of the reduction reaction of lateritic nickel ore.
（2）Raw mixture addition ball-making device is carried out ball processed process, obtain aqueous pelletizing.According to of the present utility model
Embodiment, described system includes ball-making device, processes for raw mixture is carried out ball processed, obtains aqueous pelletizing.With tradition
The technique that dry bulb enters rotary hearth furnace is compared, and the aqueous pelletizing before this utility model eliminates rotary hearth furnace dries this flow process, shortens
Technological process, greatly reduces equipment investment.
（3）By aqueous pelletizing addition rotary hearth furnace device be dried, reduction treatment, obtain going back original product.
According to specific embodiment of the utility model, this system includes described rotary hearth furnace device, for doing aqueous pelletizing
Dry, reduction, obtains going back original product, described rotary hearth furnace device includes：Successively adjacent feed zone, drying and preheating area, reducing zone and
Discharge zone, wherein, described rotary hearth furnace adopts zone heating mode, and described drying and preheating area is heated using described drying tube,
Described reducing zone is heated using described burner.With conventional rotary hearth furnace all using furnace wall burner on sidewall heating by the way of compared with,
Rotary hearth furnace of the present utility model, by the way of zone heating, solves the susceptible to plugging difficult problem of burner.Described aqueous pelletizing via
The feed zone of described rotary hearth furnace device enters, and then after drying and preheating area is dried process, reducing zone of entering is carried out also
Former reaction, finally, the original product of going back obtaining is discharged via discharge zone.Described aqueous pelletizing is in the reaction condition of rotary hearth furnace device
For：700-1000 DEG C of drying and preheating area minimum temperature, carries out material table water removing, the removing of lateritic nickel ore water of crystallization and material
Preheating；1300-1500 DEG C of reducing zone maximum temperature, reduces to nickel, ferrum in lateritic nickel ore；Rotary hearth furnace device rotates a circle
Time is 30min-90min.Compared with conventional rotary hearth furnace technique, this utility model rotary hearth furnace burner is not easily blocked, equipment availability
Rate is higher.
（4）Original product will be gone back and be added to after broken jigging sorting unit crushes and carry out jigging staged care, obtain the first product
The granular ferronickel of product and tailings.According to specific embodiment of the utility model, this system also includes described broken jigging sorting unit,
Carry out jigging staged care for going back after original product crushes, obtain the granular ferronickel of the first product and tailings.In this utility model
Some embodiments in, go back original product and obtain the granular ferronickel of the first product after broken jigging sorting unit is processed, described first
The granularity of the granular ferronickel of product is in more than 0.5mm.Thus, this system achieves the efficient recovery to lateritic nickel ore, has obtained nickel
Iron product.
（5）Tailings is added to mill ore magnetic selection device and carries out mill ore magnetic selection process, obtain the second product powdery ferronickel and tail
Ore deposit.According to specific embodiment of the utility model, this system also includes described mill ore magnetic selection device, for tailings is carried out ore grinding
Magnetic separation is processed to promote magnetic ferronickel powder to be separated with non magnetic stone-like pulse, obtains the second product powdery ferronickel and mine tailing.In this practicality
In some new embodiments, described step（4）In the granular ferronickel of the first product and described step（5）In the second product powder
The nickel recovery sum of shape ferronickel is more than 88%, so that valuable metal nickel is fully reclaimed.Thus, this system achieves to laterite
The high efficiente callback of nickel minerals, has obtained ferro-nickel product.
Inventor finds, simple according to the system structure of this utility model embodiment, easy to operate, is directly entered using wet bulb
The flow processing lateritic nickel ore of rotary hearth furnace, shortens pretreatment process, reduces production cost and equipment investment.Turn bottom with tradition
Stove is all compared by the way of the heating of furnace wall burner on sidewall, and rotary hearth furnace of the present utility model, by the way of zone heating, solves
A burner susceptible to plugging difficult problem, equipment operation rate is higher it is achieved that the low-temperature reduction of lateritic nickel ore is smelted.The system is not required to also
Original product carries out high melt, and is by physical separation and can get final products, and this process energy consumption is low, low cost.And,
Described original product of going back recycles so that the response rate of lateritic nickel ore increases through twice, and thus, this system achieves red
The high efficiente callback of native nickel minerals.
Embodiment 1
From TFe18.5%, lateritic nickel ore, as raw material, is first crushed to below 3mm by the lateritic nickel ore containing Ni 1.5%,
According to reducing agent addition be theoretical addition 1.0 times, limestone addition be the 10% of lateritic nickel ore weight, industrial soda adds
2% proportioning that dosage is the 4% of lateritic nickel ore weight, monazite addition is lateritic nickel ore weight carries out mixing-ball processed, obtains
Aqueous pelletizing moisture content be 15%, by aqueous pelletizing be directly distributed into rotary hearth furnace device be dried, reduction treatment, rotary hearth furnace fill
The drying and preheating area put is heated using drying tube, and reducing zone adopts heat-accumulating burner to heat；The annulus folder in drying and preheating area
Angle is 20 °, and the annulus angle of reducing zone is 270 °；Drying and preheating area enters stove minimum temperature and is 900 DEG C, and reducing zone maximum temperature is
1380℃；Rotary hearth furnace device rotates a circle time 35min, and what rotary hearth furnace device discharge zone obtained go back after original product crushes uses jigging
Machine carries out staged care, obtains granular ferro-nickel product and the tailings of average nickel grade 10.2%, tailings is levigate account for 70% to 200 mesh after
Carry out wet magnetic separation, obtain the magnetic powdery ferro-nickel product of nickel grade 4.9%, granular ferro-nickel product and powdery ferro-nickel product comprehensive
Closing nickel grade is 6.5%, and comprehensive nickel recovery is 90.2%.
Embodiment 2
From TFe22.3%, the lateritic nickel ore containing Ni 1.78% as raw material, first by lateritic nickel ore be crushed to 1mm with
Under, be theoretical addition according to reducing agent addition 1.4 times, limestone addition is the 25% of lateritic nickel ore weight, Borax adds
3% proportioning that dosage is the 5% of lateritic nickel ore weight, sodium chloride addition is lateritic nickel ore weight carries out mixing-ball processed, obtains
Aqueous pelletizing moisture content be 17%, by aqueous pelletizing be directly distributed into rotary hearth furnace device be dried, reduction treatment, rotary hearth furnace fill
The drying and preheating area put is heated using drying tube, and reducing zone adopts common burner heating；The annulus angle in drying and preheating area
For 120 °, the annulus angle of reducing zone is 200 °；Drying and preheating area enters stove minimum temperature and is 800 DEG C, and reducing zone maximum temperature is
1450℃；Rotary hearth furnace device rotates a circle time 60min, and what rotary hearth furnace device discharge zone obtained go back after original product is crushed to 3mm
Carry out staged care with jigging machine, obtain granular ferro-nickel product and the tailings of average nickel grade 11.8%, tailings is levigate to 200 mesh
Carry out magnetic separation after accounting for 60%, obtain the magnetic powdery ferro-nickel product of nickel grade 5.7%, granular ferro-nickel product and powdery ferro-nickel product
Comprehensive nickel grade is 7.8%, and comprehensive nickel recovery is 91%.
It is to be understood that term " first ", " second " are only used for describing purpose in description of the present utility model, and
It is not intended that instruction or hint relative importance or the implicit quantity indicating indicated technical characteristic.Thus, define
The feature of " first ", " second " can be expressed or implicitly include one or more this feature.
In this utility model, unless otherwise clearly defined and limited, term " installation ", " being connected ", " connection ", " Gu
Fixed " etc. term should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected or integral；Can be
It is mechanically connected or electrically connect；Can be to be joined directly together it is also possible to be indirectly connected to by intermediary, can be two
The connection of element internal or the interaction relationship of two elements.For the ordinary skill in the art, can basis
Concrete condition understands concrete meaning in this utility model for the above-mentioned term.
In this utility model, unless otherwise clearly defined and limited, fisrt feature second feature " on " or D score
Can be the first and second feature directly contacts, or the first and second features pass through intermediary mediate contact.And, first is special
Levy second feature " on ", " top " and " above " but fisrt feature directly over second feature or oblique upper, or only
Represent that fisrt feature level height is higher than second feature.Fisrt feature second feature " under ", " lower section " and " below " permissible
Be fisrt feature immediately below second feature or obliquely downward, or be merely representative of fisrt feature level height and be less than second feature.
In the description of this specification, reference term " embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or the spy describing with reference to this embodiment or example
Point is contained at least one embodiment of the present utility model or example.In this manual, the schematic table to above-mentioned term
State that be not necessarily referring to is identical embodiment or example.And, the specific features of description, structure, material or feature can be
Combine in an appropriate manner in any one or more embodiments or example.Additionally, in the case of not conflicting, this area
Technical staff the feature of the different embodiments described in this specification or example and different embodiment or example can be entered
Row combines and combines.
Although of the present utility model embodiment has been shown and described above it is to be understood that above-described embodiment is
Exemplary it is impossible to be interpreted as that those of ordinary skill in the art is in scope of the present utility model to restriction of the present utility model
Interior above-described embodiment can be changed, change, replacing and modification, simultaneously for one of ordinary skill in the art, foundation
The thought of the application, all will change in specific embodiments and applications.
Claims (3)
1. a kind of reduction reaction system of the aqueous pelletizing of efficient process lateritic nickel ore is it is characterised in that include：Mixing device, system
Ball device, rotary hearth furnace device, broken jigging sorting unit and mill ore magnetic selection device, wherein：
Described mixing device includes：Lateritic nickel ore entrance, reducing agent entrance, limestone entrance, additive entrance and compound go out
Mouthful, described mixing device is used for being mixed described lateritic nickel ore, reducing agent, limestone and additive, obtains raw material mixing
Thing；
Described ball-making device includes：Compound entrance, water inlet and the outlet of aqueous pelletizing, described compound entrance is mixed with described
Material outlet is connected, and described ball-making device is used for for raw mixture carrying out ball processed, obtains aqueous pelletizing；
Described rotary hearth furnace device includes：Adjacent feed zone, drying and preheating area, reducing zone and discharge zone successively, wherein, described enter
Material area is provided with aqueous pelletizing entrance, and described aqueous pelletizing entrance is exported with described aqueous pelletizing and is connected, and described discharge zone is provided with also
Original product exports, and described drying and preheating area is provided with multiple drying tubes, and described reducing zone furnace wall is provided with multiple burners；Described rotary hearth furnace
Using zone heating mode, described drying and preheating area is heated using described drying tube, and described reducing zone adopts described burner
Heated；Described rotary hearth furnace device is used for aqueous pelletizing is dried, reduces, and obtains going back original product；
Described broken jigging sorting unit includes：Reduction product inlet, the outlet of granular ferronickel, tailings outlet, described go back original product
Entrance is connected with described reduction products export, described broken jigging sorting unit be used for going back original product broken after carry out jigging and divide
Level is processed, and obtains the granular ferronickel of the first product and tailings；
Described mill ore magnetic selection device includes：Tailings entrance, the outlet of powdery ferronickel, mine tailing outlet, described tailings entrance and described tail
Slag outlet be connected, described mill ore magnetic selection device be used for by tailings carry out mill ore magnetic selection process to promote magnetic ferronickel powder with non magnetic
Stone-like pulse separates, and obtains the second product powdery ferronickel and mine tailing.
2. system according to claim 1 it is characterised in that described rotary hearth furnace device horizontal cross-section be annular, institute
State the annulus angle 10-150 in drying and preheating area.
3. system according to claim 1 it is characterised in that described rotary hearth furnace device horizontal cross-section be annular, institute
State the annulus angle 100-300 of reducing zone.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621051886.3U CN205990447U (en) | 2016-09-13 | 2016-09-13 | A kind of reduction reaction system of the aqueous pelletizing of efficient process lateritic nickel ore |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621051886.3U CN205990447U (en) | 2016-09-13 | 2016-09-13 | A kind of reduction reaction system of the aqueous pelletizing of efficient process lateritic nickel ore |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205990447U true CN205990447U (en) | 2017-03-01 |
Family
ID=58104945
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621051886.3U Expired - Fee Related CN205990447U (en) | 2016-09-13 | 2016-09-13 | A kind of reduction reaction system of the aqueous pelletizing of efficient process lateritic nickel ore |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205990447U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106191465A (en) * | 2016-09-13 | 2016-12-07 | 江苏省冶金设计院有限公司 | A kind of reduction reaction system and method for the efficient aqueous pelletizing of process lateritic nickel ore |
-
2016
- 2016-09-13 CN CN201621051886.3U patent/CN205990447U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106191465A (en) * | 2016-09-13 | 2016-12-07 | 江苏省冶金设计院有限公司 | A kind of reduction reaction system and method for the efficient aqueous pelletizing of process lateritic nickel ore |
| CN106191465B (en) * | 2016-09-13 | 2018-07-13 | 江苏省冶金设计院有限公司 | A kind of reduction reaction system and method for the aqueous pelletizing of efficient process lateritic nickel ore |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110157846B (en) | Method for adding scrap steel into blast furnace in large proportion | |
| CN101403043A (en) | Method for producing ferronickel granule with direct reduction of laterite nickel mine with rotary kiln | |
| CN104195279B (en) | A kind of red soil nickel ore prepares the technique of ferronickel | |
| CN103233114A (en) | Method for producing nickel/ferrum from nickel laterite ores | |
| CN105907990A (en) | Method of producing ferrocolumbium | |
| CN201555450U (en) | Smelting device for smelting ferronickel by nickel oxide mines | |
| CN106244758A (en) | A kind of system and method efficiently utilizing body of heater fume afterheat to process iron-containing resource | |
| CN205990447U (en) | A kind of reduction reaction system of the aqueous pelletizing of efficient process lateritic nickel ore | |
| CN105087913B (en) | The metallurgical method of pellet | |
| CN106191431B (en) | A kind of reduction reaction system and method for the aqueous pelletizing of lateritic nickel ore | |
| CN205990416U (en) | A kind of utilization body of heater fume afterheat the system of high efficiente callback iron-containing resource | |
| CN110106368A (en) | A kind of method of lateritic nickel ore indirect heating compound roasting-floating and enriching nickel cobalt | |
| CN206666572U (en) | Utilize the process system of vanadium titano-magnetite production molten casting iron | |
| CN106282468B (en) | A kind of reduction reaction system and method for fume afterheat furnace interior recycling type lateritic nickel ore dry bulb group | |
| CN205990448U (en) | A kind of pyrolysis of fume afterheat furnace interior recycling type high efficiente callback lateritic nickel ore dry bulb group and reduction reaction system | |
| CN205990417U (en) | A kind of pyrolysis of high efficiente callback lateritic nickel ore dry bulb group and reduction reaction system | |
| CN205990418U (en) | A kind of processing system of wet piece of lateritic nickel ore | |
| CN206204385U (en) | A kind of reduction reaction system of the aqueous pelletizing of lateritic nickel ore | |
| CN205990419U (en) | A kind of pyrolysis of fume afterheat furnace interior recycling type lateritic nickel ore block and reduction reaction system | |
| CN206069974U (en) | A kind of pyrolysis of lateritic nickel ore dry bulb group and reduction reaction system | |
| CN210261845U (en) | Vanadium titano-magnetite resource comprehensive utilization processing apparatus | |
| CN107326198A (en) | A kind of processing method and system of high phosphorus low-grade manganese carbonate ore | |
| CN106191465B (en) | A kind of reduction reaction system and method for the aqueous pelletizing of efficient process lateritic nickel ore | |
| CN205990420U (en) | A kind of reduction reaction system of fume afterheat furnace interior recycling type lateritic nickel ore dry bulb group | |
| CN206069921U (en) | A kind of system using wet block of lateritic nickel ore direct-reduction production granulated iron |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| PP01 | Preservation of patent right |
Effective date of registration: 20190102 Granted publication date: 20170301 |
|
| PP01 | Preservation of patent right | ||
| PD01 | Discharge of preservation of patent |
Date of cancellation: 20220102 Granted publication date: 20170301 |
|
| PD01 | Discharge of preservation of patent | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170301 Termination date: 20180913 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |