CN206204385U - A kind of reduction reaction system of the aqueous pelletizing of lateritic nickel ore - Google Patents
A kind of reduction reaction system of the aqueous pelletizing of lateritic nickel ore Download PDFInfo
- Publication number
- CN206204385U CN206204385U CN201621051882.5U CN201621051882U CN206204385U CN 206204385 U CN206204385 U CN 206204385U CN 201621051882 U CN201621051882 U CN 201621051882U CN 206204385 U CN206204385 U CN 206204385U
- Authority
- CN
- China
- Prior art keywords
- rotary hearth
- hearth furnace
- product
- drying
- entrance
- 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
Landscapes
- Manufacture And Refinement Of Metals (AREA)
Abstract
The 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.In view of the shortcomings of the prior art, the utility model proposes a kind of reduction reaction system and method for the aqueous pelletizing of lateritic nickel ore, the system and method are segmented the mode of heating of rotary hearth furnace device by improving, the pelletizing stoving process of segmentation rotary hearth furnace device stokehold is eliminated on the premise of product index is not influenceed, shorten technological process, equipment investment is reduced, had the advantages that handling process is short, equipment investment is low, equipment operation rate is high, energy consumption is low, had wide range of applications.
Description
Technical field
The utility model is related to chemical industry metallurgical field.Specifically, the utility model is related to one kind to utilize lateritic nickel ore also
The System and method for of original reaction.
Background technology
Nickel has the advantages that anti-oxidant, anticorrosive, high temperature resistant, intensity are high, there is extensive purposes in modern industry, and
It is mainly used in stainless steel production.The nickel resources in the world are broadly divided into nickel sulfide ore and lateritic nickel ore, at present, with using vulcanization
The increasingly depleted of nickel minerals, the exploitation of lateritic nickel ore is increasingly subject to pay attention to.In current industrial production, pyrometallurgical smelting lateritic nickel ore application
Most commonly used is RKEF methods, and the method carries out prereduction using rotary kiln device to lateritic nickel ore, and the calcining for obtaining is re-fed into
Ore-smelting electric furnace is smelted, and finally gives dilval product.The method has the disadvantages that：（1）Smelting technology uses electric energy
Smelt, the dependence to electricity is strong.On the one hand, China's supply of electric power constant tension, it is very tight to power consumption Industry Regulation high, and production
Once enterprise's location shortage of electric power, it is the electricity of disconnected large electricity consumer's electric furnace to stand in the breach, and makes production abnormal.On the other hand,
Undeveloped country or area that for lateritic nickel ore resource distribution is extensive, power infrastructures are relatively weak（Such as Indonesia）,
RKEF methods are subject to the restriction and limitation of electric power resource.（2）Energy consumption is big, and pollution is big.In China, the electric smelting overwhelming majority uses coal
Electricity, produces a large amount of CO in power generation process2With waste gas, water is become high temperature, high steam by coal combustion through boiler can be driven with gas
Gas-turbine rotates to form mechanical energy, and the mechanical energy of steam turbine drives generator to rotate to form electric energy again.The form of energy is often changed
Once, efficiency is just reduced once；In addition the loss of electric energy long-distance sand transport is also very big.Therefore, the transformation efficiency of coal power generation about only
It is 1/3, energy loss is very big.（3）The easy ring formation of rotary kiln device, frequent blowing out is looped, and equipment operation rate is low, and influence is normal raw
Produce.
Based on above RKEF defects, in recent years, some experts and scholar propose " to process laterite with coal base rotary hearth furnace in the industry
The new method of nickel minerals ", reduction process is completed in main equipment rotary hearth furnace, specially：First ore deposit, coal, flux etc. are mixed
Rotary hearth furnace is distributed into again after the pretreatment such as material, ball processed, drying, and during rotary hearth furnace reduction, furnace roof, side wall are maintained static, pelletizing
Rotary hearth furnace is distributed into from cloth end, furnace bottom drives the rear pelletizing that pelletizing rotates a circle in stove to be reduced, and is arranged via discharge end
Go out body of heater, the pelletizing after reduction carries out combustion gas melting or physical separation again.Wherein, be divided into rotary hearth furnace charging and discharging area and
Combustion zone, burner of the combustion zone outboard sidewalls equipped with varying number, the combustion gas sent into by pipeline（Low-heat value gas can be used）
The heat that produces with combustion air burning controls the temperature of not same district.At present, existing rotary hearth furnace pan feeding is generally dried containing
Carbon pellets rather than powder or wet bulb group, because：（1）Powder enters stove and is easily caused burner blocking；（2）If wet bulb group directly enters stove
Can under the high temperature conditions（Charging temperature is up to more than 1000 DEG C）It is chipping and in the leading portion region of cloth area and combustion zone
Dust is produced, under furnace gas perturbation action, also easily causes the burner in combustion zone leading portion region to block, prevent generation from suitable
OK.It can be seen that, the series of preprocessing " batch mixing-ball-drying processed " before rotary hearth furnace reduction is and existing rotary hearth furnace coordinative composition of equipments
Necessary pre-treatment step, but which results in the defect that pretreatment process is long, equipment investment is big, need further improvement.
Utility model content
In view of the shortcomings of the prior art, the utility model proposes a kind of aqueous pelletizing of lateritic nickel ore reduction reaction system and
Method, the system and method are segmented the mode of heating of rotary hearth furnace device by improving, and are gone on the premise of product index is not influenceed
The pelletizing stoving process of segmentation rotary hearth furnace device stokehold is fallen, has shortened technological process, equipment investment has been reduced, with processing stream
Journey is short, equipment investment is low, equipment operation rate is high, energy consumption is low, the advantages of have wide range of applications.
In order to solve the above technical problems, the technical solution adopted in the utility model is：
The utility model provides a kind of reduction reaction system of the aqueous pelletizing of lateritic nickel ore, it is characterised in that including：It is mixed
Material device, ball-making device, segmentation rotary hearth furnace device and product separator, wherein：
The mixing device includes：The outlet of lateritic nickel ore entrance, reducing agent entrance, flux entrance and compound, is used for
Lateritic nickel ore, reducing agent and flux are mixed, and obtain raw mixture；
The ball-making device includes：Compound entrance, water inlet and aqueous pelletizing outlet, the compound entrance with it is described
Compound outlet is connected, and for raw mixture to be carried out into ball processed, obtains aqueous pelletizing；
The segmentation rotary hearth furnace device includes：Adjacent feed zone, drying and preheating area, reducing zone and discharge zone successively, its
In, the feed zone is provided with aqueous pelletizing entrance, and the aqueous pelletizing entrance is connected with the aqueous pelletizing outlet, the drying
Preheating zone is provided with multiple drying tubes, is heated for being dried pipe mode to the drying and preheating area, and the reducing zone furnace wall sets
There are multiple burners, for carrying out burner mode heating to the reducing zone, the discharge zone is provided with reduction products export；Described point
Section rotary hearth furnace device uses heat stepwise mode, and the drying and preheating area is heated using drying tube mode, the reducing zone
Heated using burner mode；The segmentation rotary hearth furnace device is used to be dried aqueous pelletizing, reduce, and is also originated in
Product；
The product separator includes：Reduction product inlet, ferro-nickel product outlet, the outlet of tailings mine tailing, the reduction
Product inlet is connected with the reduction products export, and the product separator carries out high melt or mill for that will go back original product
Ore deposit magnetic separation is processed, and obtains ferro-nickel product and mine tailing or tailings.
Inventor has found that the system architecture according to the utility model embodiment is simple, easy to operate, straight using aqueous pelletizing
The flow processing lateritic nickel ore of segmentation rotary hearth furnace device is accessed, pretreatment process is shortened, production cost is reduced and is thrown with equipment
Money。With conventional rotary hearth furnace compared with by the way of furnace wall burner on sidewall is heated, segmentation rotary hearth furnace device of the present utility model is adopted
With the mode of heat stepwise, the susceptible to plugging problem of burner is solved, equipment operation rate is higher, realizes the low cost of lateritic nickel ore
Efficient reducing and smelting.
According to embodiment of the present utility model, the horizontal cross-section of the segmentation rotary hearth furnace device is annular, the drying
The annulus angle 30o-150o of preheating zone.
According to embodiment of the present utility model, the horizontal cross-section of the segmentation rotary hearth furnace device is annular, the reduction
The annulus angle 100o-280o in area.
According to embodiment of the present utility model, the thermal source of the drying tube of the segmentation rotary hearth furnace device may come from coal system
For one or more in gas fitting, natural gas supply device, electric power supply apparatus.
The beneficial effects of the utility model are：
（1）The reduction reaction system and method for the aqueous pelletizing of lateritic nickel ore that the utility model is provided, with conventional rotary hearth furnace
Compared by the way of the heating of furnace wall burner on sidewall, segmentation rotary hearth furnace device of the present utility model uses the side of heat stepwise
Formula, solves the susceptible to plugging problem of burner.
（2）The reduction reaction system and method for the aqueous pelletizing of lateritic nickel ore that the utility model is provided, with conventional rotary hearth furnace
Technique is compared, and the utility model segmentation rotary hearth furnace device burner is not easily blocked, and equipment operation rate is higher.
（3）The reduction reaction system and method for the aqueous pelletizing of lateritic nickel ore that the utility model is provided, using aqueous pelletizing
Directly enter to be segmented the flow processing lateritic nickel ore of rotary hearth furnace device, shorten pretreatment process, reduce production cost and equipment
Investment.
Brief description of the drawings
Fig. 1 is the structure chart of the reduction reaction system of the aqueous pelletizing of the utility model lateritic nickel ore.
Fig. 2 is the simple diagram of the reduction reaction system of the aqueous pelletizing of the utility model lateritic nickel ore.
Fig. 3 is the workflow diagram of the reduction reaction system of the aqueous pelletizing of the utility model lateritic nickel ore.
Wherein, 10, drying tube, 20, burner, 100, mixing device, 101, lateritic nickel ore entrance, 102, reducing agent entrance,
103rd, flux entrance, 104, compound outlet, 200, ball-making device, 201, compound entrance, 202, water inlet, 203, aqueous
Pelletizing is exported, 300, be segmented rotary hearth furnace device, 301, aqueous pelletizing entrance, 302, reduction products export, 400, product separate dress
Put, 401, reduction product inlet, 402, ferro-nickel product outlet, 403, tailings 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 limitation of the present utility model.Unreceipted particular technique or condition in embodiment, according in the art
Document described by technology or condition or carried out according to product description.
Fig. 1 is the structure chart of the reduction reaction system of the aqueous pelletizing of the utility model lateritic nickel ore, as shown in figure 1, this reality
With a kind of reduction reaction system of the aqueous pelletizing of lateritic nickel ore of new offer, including：Mixing device 100, ball-making device 200,
Segmentation rotary hearth furnace device 300 and product separator 400.As described in Figure 2, the mixing device includes：Lateritic nickel ore entrance
101st, reducing agent entrance 102, flux entrance 103 and compound outlet 104, enters for lateritic nickel ore, reducing agent and flux
Row mixing, obtains raw mixture；The ball-making device includes：The outlet of compound entrance 201, water inlet 202 and aqueous pelletizing
203, the compound entrance is connected with compound outlet, for raw mixture to be carried out into ball processed, obtains aqueous pelletizing；
The segmentation rotary hearth furnace device includes：Adjacent feed zone, drying and preheating area, reducing zone and discharge zone successively, wherein, described point
Section rotary hearth furnace device uses heat stepwise mode, and the drying and preheating area is heated using drying tube mode, the reducing zone
Heated using burner mode；The product separator includes：Reduction product inlet 401, ferro-nickel product outlet 402, tail
Slag mine tailing outlet 403, the reduction product inlet is connected with the reduction products export.
Inventor has found that the system architecture according to the utility model embodiment is simple, easy to operate, directly enters using wet bulb
The flow processing lateritic nickel ore of rotary hearth furnace device is segmented, pretreatment process is shortened, production cost and equipment investment is reduced。With
Conventional rotary hearth furnace is compared by the way of the heating of furnace wall burner on sidewall, and segmentation rotary hearth furnace device of the present utility model is using segmentation
The mode of heating, solves the susceptible to plugging problem of burner, and equipment operation rate is higher, realizes the low-cost high-efficiency of lateritic nickel ore also
Original is smelted.
According to specific embodiment of the utility model, the segmentation rotary hearth furnace device, for aqueous pelletizing to be dried,
Reduction, obtains going back original product, and the segmentation 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, the feed zone is provided with aqueous pelletizing entrance 301, the aqueous pelletizing
Entrance is connected with the aqueous pelletizing outlet, and the aqueous pelletizing entrance can be arranged on top or the side wall of feed zone, use
Reacted in the segmentation rotary hearth furnace device stove in aqueous pelletizing is added；The discharge zone is provided with reduction products export 302,
For original product discharge will to be gone back.
According to specific embodiment of the utility model, the concrete shape of the segmentation rotary hearth furnace device is not particularly limited,
As long as can realize carrying out reduction reaction to the aqueous pelletizing of lateritic nickel ore.In some embodiments of the present utility model, institute
The horizontal cross-section of segmentation rotary hearth furnace device is stated for annular, also, annulus angle shared by each area is not particularly limited.It is preferred that
, the annulus angle 30o-150o in the drying and preheating area, the annulus angle 100o-280o of the reducing zone, it is ensured that good
Reduction effect.In some embodiments of the present utility model, the segmentation rotary hearth furnace device rotates a circle the time for 30min-
90min, the selection in the interval can both ensure the reduction effect of pelletizing, and energy waste is not resulted in again.
According to specific embodiment of the utility model, the mode of heating in the drying and preheating area of the segmentation rotary hearth furnace device is not
It is particularly limited, as long as the removing of material table water, the removing of the lateritic nickel ore crystallization water and the preheating of material can be completed.
In some embodiments of the present utility model, the drying and preheating area is heated by the way of drying tube 10, further,
The drying tube may be mounted at the drying and preheating area, can set multiple drying tubes 10.In some realities of the present utility model
In applying example, the thermal source of the drying tube may come from during coal prepares gas fitting, natural gas supply device, electric power supply apparatus
One or more.Coal prepares gas fitting, natural gas supply device, electric power supply apparatus and can be done to segmentation rotary hearth furnace device
Dry preheating zone provides effective thermal source, meets requirement of the system to thermal source.Added using furnace wall burner on sidewall with conventional rotary hearth furnace
The mode of heat is compared, and the drying and preheating area of the segmentation rotary hearth furnace device of the present utility model is kept away by the way of drying tube heating
Exempt to enter the burner blockage problem at stove initial stage, the technique of segmentation rotary hearth furnace device can be directly distributed into using aqueous pelletizing, ensure life
Produce direct motion.Meanwhile, compared with the technique that traditional dry bulb enters to be segmented rotary hearth furnace device, the utility model eliminates segmentation rotary hearth furnace dress
The aqueous pelletizing for putting stokehold dries this flow, shortens technological process, greatly reduces equipment investment.
According to specific embodiment of the utility model, the mode of heating of the reducing zone of the segmentation rotary hearth furnace device is not had
The limitation of body, as long as raw material can be heated.In some embodiments of the present utility model, the reducing zone uses burner 20
Mode heated, further, the burner 20 may be mounted at the reducing zone, can set multiple burners 20.
In some embodiments of the present utility model, ball is passed to by the way of the heat that burner combustion is produced is by radiant heat transfer
Group.Compared with conventional rotary hearth furnace technique, the utility model segmentation rotary hearth furnace device burner is not easily blocked, and equipment operation rate is higher.
According to specific embodiment of the utility model, the system also includes the product separator, for will also originate in
Product carry out high melt or mill ore magnetic selection, obtain ferro-nickel product and mine tailing or tailings.In some embodiments of the present utility model,
The product separator includes：Reduction product inlet, ferro-nickel product outlet, the outlet of tailings mine tailing, the reduction product inlet
It is connected with the reduction products export, the product separator carries out high melt or mill ore magnetic selection for that will go back original product,
Obtain ferro-nickel product and mine tailing or tailings.Thus, the system realizes the effective recovery to lateritic nickel ore, has obtained ferronickel product
Product.
According to embodiment of the present utility model, the weight proportion of lateritic nickel ore, reducing agent and flux in the system
It is not particularly limited.In some embodiments of the present utility model, lateritic nickel ore, reducing agent and flux in the system
Weight proportion be：The addition weight of flux is the 0-20% of lateritic nickel ore weight；Reducing agent addition is theoretical addition
0.8-1.8 times.Because if the addition of reducing agent is too low, the reduction melting effect of lateritic nickel ore can be influenceed；And if reducing agent
Adding too much, can not improve the technical indicator of product, and coal resource can be caused to waste, and improve production cost.Flux
Addition may advantageously facilitate the reduction of lateritic nickel ore, reduce the reduction temperature of mineral, and then reducing energy consumption and cost, so, it is fluxing
The use of agent is intended to promote iron content, nickel silicate mineral to decompose, and effectively reduces mineral reduction temperature, and then reducing energy consumption, subtracts
Few cost.
According to embodiment of the present utility model, the species of lateritic nickel ore, reducing agent and flux in the system is not received
Specific limitation, as long as can be used in being reacted.In some embodiments of the present utility model, the flux is stone
One or more in lime stone, quick lime, sodium carbonate, sulfate；Reducing agent is solid carbon-contg material.Preferably, it is described carbon containing
Material can be one or more in semi-coke, coal, carbon black.Also, the system not only can be used to process lateritic nickel ore, also
One or more thing in lateritic nickel ore, chromite, high-phosphorus iron ore, ferrous manganese ore, Dust of Iron And Steel Works, iron content metallurgical slag can be processed
Material.In addition, making reducing agent using mill coal, the coke of scarcity of resources is instead of with mill coal, not only save coking cost, and
And the replacement during steel smelting procedure to the rare energy is realized, natural resources is rationally utilized to greatest extent.
In other side of the present utility model, the utility model is carried out red there is provided one kind using foregoing system
The method of the reduction reaction of native nickel minerals, as shown in figure 3, comprising the following steps：
（1）Lateritic nickel ore, reducing agent and flux addition mixing device are carried out into batch mixing and dispensing treatment, raw material is obtained and is mixed
Compound.
According to embodiment of the present utility model, the system includes mixing device, for by lateritic nickel ore, reducing agent and helping
Flux carries out batch mixing and dispensing treatment, obtains raw mixture.In some embodiments of the present utility model, in the system
The weight proportion of lateritic nickel ore, reducing agent and flux is：The addition weight of flux is the 0-20% of lateritic nickel ore weight；Also
Former agent addition is 0.8-1.8 times of theoretical addition.During the flux is lime stone, quick lime, sodium carbonate, sulfate
One or more；Reducing agent is solid carbon-contg material.Preferably, the carbonaceous material can be the one kind in semi-coke, coal, carbon black
Or it is several.Also, the system not only can be used to process lateritic nickel ore, lateritic nickel ore, chromite, ferrophosphorus high can also be processed
One or more material in ore deposit, ferrous manganese ore, Dust of Iron And Steel Works, iron content metallurgical slag.
（2）Raw mixture addition ball-making device is carried out into ball treatment processed, aqueous pelletizing is obtained.According to of the present utility model
Embodiment, the system includes ball-making device, for raw mixture to be carried out into ball treatment processed, obtains aqueous pelletizing.With tradition
The technique that dry bulb enters to be segmented rotary hearth furnace device is compared, and the aqueous pelletizing that the utility model eliminates segmentation rotary hearth furnace device stokehold dries
This flow is done, technological process is shortened, equipment investment is greatly reduced.
（3）By aqueous pelletizing add segmentation rotary hearth furnace device be dried, reduction treatment, obtain going back original product.
According to embodiment of the present utility model, the system includes segmentation rotary hearth furnace device, for aqueous pelletizing to be carried out
Dry, reduce, obtain going back original product.In some embodiments of the present utility model, the segmentation rotary hearth furnace device includes：Successively
Adjacent feed zone, drying and preheating area, reducing zone and discharge zone, wherein, the segmentation rotary hearth furnace device uses heat stepwise side
Formula, the drying and preheating area is heated using drying tube mode, and the reducing zone is heated using burner mode.With tradition
Rotary hearth furnace is compared by the way of the heating of furnace wall burner on sidewall, and segmentation rotary hearth furnace device of the present utility model uses heat stepwise
Mode, solve the susceptible to plugging problem of burner.The aqueous pelletizing enters via the feed zone of the segmentation rotary hearth furnace device,
Then after drying and preheating area is dried treatment, reducing zone of entering carries out reduction reaction, and finally, what is obtained goes back original product warp
Discharged by discharge zone.The aqueous pelletizing segmentation rotary hearth furnace device reaction condition be：Drying and preheating area minimum temperature 700-
1000 DEG C, carry out the removing of material table water, the removing of the lateritic nickel ore crystallization water and the preheating of material；Reducing zone maximum temperature
1200-1400 DEG C, nickel, iron in lateritic nickel ore are reduced；Segmentation rotary hearth furnace device rotates a circle the time for 30min-
90min.Compared with conventional rotary hearth furnace technique, the utility model segmentation rotary hearth furnace device burner is not easily blocked, and equipment operation rate is more
It is high.
（4）To go back original product be added to product separator carry out high melt treatment or mill ore magnetic selection treatment, obtain nickel
Iron product and mine tailing or tailings.The system also include the product separator, for will go back original product carry out high melt or
Mill ore magnetic selection, obtains ferro-nickel product and mine tailing or tailings.In some embodiments of the present utility model, original product is gone back in product point
Reaction condition from device is：High melt temperature is 1450 DEG C -1700 DEG C, can ensure Smelting Effect, and energy is not resulted in again
Source wastes.Thus, the system realizes the effective recovery to lateritic nickel ore, has obtained ferro-nickel product.
Embodiment 1
From TFe21.8%, the lateritic nickel ore containing Ni 1.58% as raw material, first by lateritic nickel ore be crushed to 3mm with
Under, according to 1.0 times that reducing agent addition is theoretical addition, the proportioning without flux carries out mixing-pressure ball, compacting
Aqueous pelletizing moisture be 14%, by press aqueous pelletizing be directly distributed into segmentation rotary hearth furnace device be dried, reduction treatment, be segmented
The dry section of rotary hearth furnace device is heated using drying tube, and drying tube thermal source comes from natural gas supply device, and reducing zone uses
Heat-accumulating burner is heated；The annulus angle of dry section is 30 °, and the annulus angle of reducing zone is 270 °；Dry section enters stove lowest temperature
It is 900 DEG C to spend, and reducing zone maximum temperature is 1350 DEG C；Segmentation rotary hearth furnace device rotates a circle time 30min, segmentation rotary hearth furnace dress
Put the hot feeding combustion gas smelting furnace of original product of going back for obtaining that discharges carries out melting, fusion process addition lime under the conditions of 1550 DEG C
Stone, addition is reduce product weight 2%, obtains the dilval of nickel grade 15%, nickel recovery 95%.
Embodiment 2
From TFe17.1%, the lateritic nickel ore containing Ni 1.80% as raw material, first by lateritic nickel ore be crushed to 1mm with
Under, according to 1.5 times that reducing agent addition is theoretical addition, the addition of lime stone is carried out for the 10% of lateritic nickel ore weight
Mixing-ball processed, aqueous pelletizing moisture is 18%, and pressed aqueous pelletizing is directly distributed into segmentation rotary hearth furnace device is dried-reduces
Treatment, the dry section for being segmented rotary hearth furnace device is heated using drying tube, and the mode of heating of drying tube is electrical heating, reducing zone
Heated using burner；The annulus angle of dry section is 90 °, and the annulus angle of reducing zone is 210 °；Dry section enters stove minimum temperature
It it is 700 DEG C, reducing zone maximum temperature is 1300 DEG C；Segmentation rotary hearth furnace device rotates a circle time 60min, is segmented rotary hearth furnace device
The dilval product gone back original product high melt, obtain nickel grade 19% that discharging is obtained, nickel recovery is 96%.
Embodiment 3
From TFe41.0%, the lateritic nickel ore containing Ni 1.30% as raw material, first by lateritic nickel ore be crushed to 2mm with
Under, according to 0.8 times that reducing agent addition is theoretical addition, the addition of quick lime is mixed for the 5% of lateritic nickel ore weight
Conjunction-pelletizing, aqueous pelletizing moisture be 19%, by press aqueous pelletizing be directly distributed into be segmented rotary hearth furnace device be dried-go back original place
Reason, the dry section for being segmented rotary hearth furnace device is heated using drying tube, and drying tube thermal source comes from gas generator, and reducing zone is adopted
Heated with burner；The annulus angle of dry section is 140 °, and the annulus angle of reducing zone is 160 °；Dry section enters stove minimum temperature
900 DEG C, reducing zone maximum temperature is 1250 DEG C；Segmentation rotary hearth furnace device rotates a circle time 90min, and segmentation rotary hearth furnace device goes out
What material was obtained goes back the hot feeding high temperature furnace of original product carries out melting, and 1650 DEG C or so of in-furnace temperature obtains the ferronickel of nickel grade 6%
Alloy, nickel recovery 94%.
Embodiment 4
From TFe18.5%, the lateritic nickel ore containing Ni 1.5% as raw material, lateritic nickel ore is first crushed to below 3mm,
According to 1.1 times that reducing agent addition is theoretical addition, lime stone addition is carried out for the 5% of lateritic nickel ore weight proportioning
Mixing-pressure ball, the aqueous pelletizing moisture content of compacting is 15%, and pressed aqueous pelletizing is directly distributed into segmentation rotary hearth furnace device is carried out
- reduction is dried, the drying and preheating area for being segmented rotary hearth furnace device is heated using drying tube, drying tube is located at upper furnace, also
Heated using heat-accumulating burner in former area；The annulus angle in preheating and drying area is 30 °, and the annulus angle of reducing zone is 270 °；Dry
It is 900 DEG C that preheating zone enters stove minimum temperature, and reducing zone maximum temperature is 1350 DEG C；Segmentation rotary hearth furnace device rotates a circle the time
40min, the original product of going back that the device discharging of segmentation rotary hearth furnace is obtained carries out mill ore magnetic selection treatment, in the magnetic ferronickel powder product for obtaining
Nickel grade is 5.5% dilval, nickel recovery 85%.
Embodiment 5
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, according to 1.4 times that reducing agent addition is theoretical addition, lime stone addition is the 10% of lateritic nickel ore weight, industrial soda
Addition carries out mixing-ball processed for the 3% of lateritic nickel ore weight proportioning, and aqueous pelletizing moisture content is 18%, by aqueous pelletizing cloth
Enter to be segmented rotary hearth furnace device to be processed, the drying and preheating area for being segmented rotary hearth furnace device is heated using drying tube, reducing zone
Heated using common burner；The annulus angle in preheating and drying area is 120 °, and the annulus angle of reducing zone is 180 °；Drying and preheating area
It is 800 DEG C to enter stove minimum temperature, and reducing zone maximum temperature is 1300 DEG C；Segmentation rotary hearth furnace device rotates a circle time 70min, point
The original product of going back that the device discharging of section rotary hearth furnace is obtained carries out mill ore magnetic selection treatment, and nickel grade is in the magnetic ferronickel powder product for obtaining
6.7% dilval, nickel recovery 90%.
In description of the present utility model, it is to be understood that term " first ", " second " are only used for describing purpose, and
It is not intended that indicating or implying relative importance or the implicit quantity for indicating indicated technical characteristic.Thus, define
One or more this feature can be expressed or be implicitly included to the feature of " first ", " second ".
In the utility model, unless otherwise clearly defined and limited, term " installation ", " connected ", " connection ", " Gu
It is fixed " etc. term should be interpreted broadly, for example, it may be fixedly connected, or be detachably connected, or integrally；Can be
Mechanically connect, or electrically connect；Can be joined directly together, it is also possible to be indirectly connected to by intermediary, can be two
The connection of element internal or two interaction relationships of element.For the ordinary skill in the art, can basis
Concrete condition understands concrete meaning of the above-mentioned term in the utility model.
In the 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 are by 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 " can be with
Be fisrt feature immediately below second feature or obliquely downward, or be merely representative of fisrt feature level height less than second feature.
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
Stating need not be directed to identical embodiment or example.And, the specific features of description, structure, material or feature can be
Combined 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 or example described in this specification and different embodiment or example can be entered
Row is combined and combined.
Although embodiment of the present utility model has been shown and described above, it is to be understood that above-described embodiment is
Exemplary, it is impossible to it is interpreted as to limitation of the present utility model, one of ordinary skill in the art is in scope of the present utility model
It is interior above-described embodiment to be changed, changed, replaced and modification, simultaneously for those of ordinary skill in the art, foundation
The thought of the application, will change in specific embodiments and applications.
Claims (4)
1. the reduction reaction system of the aqueous pelletizing of a kind of lateritic nickel ore, it is characterised in that including：Mixing device, ball-making device, point
Section rotary hearth furnace device and product separator, wherein：
The mixing device includes：Lateritic nickel ore entrance, reducing agent entrance, flux entrance and compound outlet, for laterite
Nickel minerals, reducing agent and flux are mixed, and obtain raw mixture；
The ball-making device includes：Compound entrance, water inlet and aqueous pelletizing outlet, the compound entrance mix with described
Material outlet is connected, and for raw mixture to be carried out into ball processed, obtains aqueous pelletizing；
The segmentation 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, the aqueous pelletizing entrance is connected with the aqueous pelletizing outlet, the drying and preheating
Area is provided with multiple drying tubes, is heated for being dried pipe mode to the drying and preheating area, and the reducing zone furnace wall is provided with many
Individual burner, for carrying out burner mode heating to the reducing zone, the discharge zone is provided with reduction products export；The rotary hearth furnace
Using heat stepwise mode, the drying and preheating area is heated using drying tube mode, and the reducing zone uses burner mode
Heated；The segmentation rotary hearth furnace device is used to be dried aqueous pelletizing, reduce, and obtains going back original product；
The product separator includes：Reduction product inlet, ferro-nickel product outlet, the outlet of tailings mine tailing, it is described to go back original product
Entrance is connected with the reduction products export, and the product separator carries out high melt or ore grinding magnetic for that will go back original product
Choosing is processed, and obtains ferro-nickel product and mine tailing or tailings.
2. system according to claim 1, it is characterised in that the horizontal cross-section of the segmentation rotary hearth furnace device is annulus
Shape, the annulus angle 30o-150o in the drying and preheating area.
3. system according to claim 1, it is characterised in that the horizontal cross-section of the segmentation rotary hearth furnace device is annulus
Shape, the annulus angle 100o-280o of the reducing zone.
4. system according to claim 1, it is characterised in that the thermal source of the drying tube of the segmentation rotary hearth furnace device can be with
Come from one or more that coal prepares in gas fitting, natural gas supply device, electric power supply apparatus.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621051882.5U CN206204385U (en) | 2016-09-13 | 2016-09-13 | A kind of reduction reaction system of the aqueous pelletizing of lateritic nickel ore |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621051882.5U CN206204385U (en) | 2016-09-13 | 2016-09-13 | A kind of reduction reaction system of the aqueous pelletizing of lateritic nickel ore |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206204385U true CN206204385U (en) | 2017-05-31 |
Family
ID=58759515
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621051882.5U Expired - Fee Related CN206204385U (en) | 2016-09-13 | 2016-09-13 | A kind of reduction reaction system of the aqueous pelletizing of lateritic nickel ore |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206204385U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106191431A (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 aqueous pelletizing of lateritic nickel ore |
-
2016
- 2016-09-13 CN CN201621051882.5U patent/CN206204385U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106191431A (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 aqueous pelletizing of lateritic nickel ore |
| CN106191431B (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 lateritic nickel ore |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN112899427B (en) | Hydrogen shaft furnace iron making system and method using electric energy for heating | |
| CN103011090B (en) | Method for producing sulfur by using pyrolysis-reducing united technique | |
| CN205679048U (en) | A kind of coal-based direct reduction calcining kiln | |
| CN101575654B (en) | Process and device for preparing iron alloy containing nickel and nickel-chromium | |
| CN103468930B (en) | Method and device for preparing nickel iron roasted ore by utilizing lateritic nickel ore | |
| CN102992285B (en) | Method and equipment for producing yellow phosphorus by utilizing closed annular heating furnace | |
| CN103451451A (en) | Ferro-nickel alloy production technology with laterite nickel ore processed through oxygen enrichment hot air shaft furnace | |
| CN106868245A (en) | A kind of molten iron making processes of two-step method | |
| CN102277463B (en) | Reduction furnace and device for producing direct reduced iron | |
| CN104745806A (en) | Refractory low-grade iron ore shaft furnace semi-coke added magnetizing roast process | |
| CN102409126B (en) | Integrated reduction ironmaking furnace and integrated reduction ironmaking process | |
| CN106244758A (en) | A kind of system and method efficiently utilizing body of heater fume afterheat to process iron-containing resource | |
| CN106191431B (en) | A kind of reduction reaction system and method for the aqueous pelletizing of lateritic nickel ore | |
| CN103352097A (en) | Reducing furnace, and technology for directly reducing coal-containing pellets through preheating outside coal base | |
| CN201043182Y (en) | Electrical heated equipment for direct reduction of sponge iron | |
| CN206204385U (en) | A kind of reduction reaction system of the aqueous pelletizing of lateritic nickel ore | |
| CN210656995U (en) | Iron-containing red mud recovery large system and rock wool production system comprising same | |
| CN204039332U (en) | The metallurgical restoring system of coal gas circulation coal wholegrain radial sector pyrolysis coupling | |
| CN103205584A (en) | Production device and production method of manganese monoxide mineral powder | |
| CN206256139U (en) | The system for processing zinc leaching residue | |
| CN101705324B (en) | Process for smelting ferro-nickel by using nickel oxide minerals and smelting device | |
| 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 | |
| CN205990447U (en) | A kind of reduction reaction system of the aqueous pelletizing of efficient process lateritic nickel ore | |
| CN205990421U (en) | A kind of efficient utilization body of heater fume afterheat processes the system of iron-containing resource | |
| CN205990419U (en) | A kind of pyrolysis of fume afterheat furnace interior recycling type lateritic nickel ore block and reduction reaction system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PP01 | Preservation of patent right | ||
| PP01 | Preservation of patent right |
Effective date of registration: 20190102 Granted publication date: 20170531 |
|
| PD01 | Discharge of preservation of patent | ||
| PD01 | Discharge of preservation of patent |
Date of cancellation: 20220102 Granted publication date: 20170531 |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170531 Termination date: 20180913 |