CN205990418U - A kind of processing system of wet piece of lateritic nickel ore - Google Patents
A kind of processing system of wet piece of lateritic nickel ore Download PDFInfo
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Abstract
This utility model belongs to field of metallurgy and in particular to a kind of processing system of wet piece of lateritic nickel ore.This system includes：Material processing device, preheating and reduction apparatus, segregation apparatuss, wherein：Described material processing device, including the breaker being sequentially connected, screening plant and mixing dress；Described preheating and reduction apparatus include：Adjacent feed zone, drying tube preheating zone, burner on sidewall reducing zone and discharge zone successively；Described segregation apparatuss include：Reducing material entrance, ferro-nickel product outlet and tailings outlet.This utility model can directly enter the flow processing lateritic nickel ore of rotary hearth furnace using wet block, shorten technological process, reduce equipment investment, production cost and energy consumption；This utility model rotary hearth furnace can adopt regenerative combustion technology, can reduce fuel cost using inferior or low-rank fuel, can promote with the area lacking natural gas and high-grade fuel at home.
Description
Technical field
This utility model belongs to field of metallurgy and in particular to a kind of processing system of wet piece of lateritic nickel ore.
Background technology
Nickel is a kind of important non-ferrous metal, mainly has lateritic nickel ore and nickel sulfide ore to smelt.Due to nickel in recent years
Consumption be continuously increased and nickel sulfide ore reserves constantly reduce, the exploitation of nickel laterite is increasingly subject to pay attention to.Lateritic nickel ore
It is essentially divided into two classes, a class is limonite type, positioned at the top in mineral deposit, due to the result of weathering eluviation, ferrum is many, silicon
Few, magnesium is few, and nickel is relatively low, but amount containing cobalt is higher, and this Ore preferably adopts hydrometallurgical processes to process, the slag that smelting ferronickel produces
Production for steel；Another kind of is garnierite, positioned at the bottom in mineral deposit, due to air slaking enrichment, the many silicon of nickel minerals, many magnesium, low ferrum,
Cobalt, nickel content is higher, referred to as garnirite, and this Ore preferably adopts fire metallurgy process to process, and produces ferronickel and produces
Slag can be used for construction material and produce chemical fertilizer.The Ore being in intermediate layer can be using pyrometallurgy it is also possible to adopt
Use hydrometallurgical processes.All have the following disadvantages in process using traditional pyrometallurgical smelting ferronickel：Process environments pollute
Seriously, high energy consumption, runs counter to the restriction of national environmental protection policy and energy policy；Ore is required to have higher nickel grade；Revolution
Kiln reduction temperature is low, easy ring formation；Produce finished product nickel grade low；Low yield.As Chinese patent CN 102212636A discloses one
The iron smelting method that point stove melts point is melted in kind of lateritic nickel ore rotary hearth furnace coal-based direct reduction combustion gas, by lateritic nickel ore and coal and flux
Pelletizing after mixing, dry bulb is distributed in rotary hearth furnace and carries out direct-reduction and obtain metallized pellet, and metallized pellet feeding coal gas is made
The regenerative gas of fuel melt a point stove and carry out molten point, finally give nickelic dilval, this utility model raw material need to be made
The pretreatment such as ball, drying, complex manufacturing, equipment investment is high.In recent years, some experts and scholar propose " to use coal base in the industry
The new method of rotary hearth furnace process lateritic nickel ore ", reduction process completes in main equipment rotary hearth furnace, many compared with ripe technique at present
It is distributed into rotary hearth furnace for after the pretreatment such as batch mixing, ball processed, drying again, before rotary hearth furnace reduction, pretreatment process is more complicated, has production
Technological process is long, and equipment investment is big, and production cost is high, the defect such as energy consumption height, additionally, adopting burner formula to heat existing rotary hearth furnace more
Mode, but because material enters in stove initial stage stove, Dust Capacity is larger, is easily caused burner blocking thus affecting to produce direct motion.Therefore how
The system designing the process lateritic nickel ore that a kind of technological process is short, equipment investment is low and energy consumption is low becomes this area and needs solution badly
Technical problem certainly.
Utility model content
This utility model is directed to the deficiencies in the prior art it is proposed that a kind of processing system of wet piece of lateritic nickel ore.This system
Have that technological process is short, equipment investment is low and the low advantage of energy consumption.
For solving above-mentioned technical problem, the technical solution adopted in the utility model is：
The utility model proposes a kind of processing system of wet piece of lateritic nickel ore.According to embodiment of the present utility model, should
System includes：Material processing device, preheating and reduction apparatus, segregation apparatuss, wherein：Described material processing device, including successively
Breaker, screening plant and the mixing arrangement connecting, described material processing device has lateritic nickel ore entrance, reduction coal enters
Mouthful, additive entrance and aqueous mixture material outlet, for by described lateritic nickel ore, reducing agent and additive after treatment press than
Example is mixed, and obtains aqueous mixture material；Described preheating and reduction apparatus are improved rotary hearth furnace, including：Adjacent successively
Feed zone, drying tube preheating zone, burner on sidewall reducing zone and discharge zone, wherein, described drying tube preheating zone and described side wall
Burner is provided with partition wall between reducing zone, is provided with barricade between described burner on sidewall reducing zone and described discharge zone, described partition wall and
Barricade is extended downwardly by the roof of described rotary hearth furnace, and keeps certain intervals with the cloth ring-shaped furnace bottom of described rotary hearth furnace；Its
In, described drying tube preheating zone is provided with multiple drying tubes inside furnace wall, for heating to described drying tube preheating zone；Described
Burner on sidewall reducing zone is provided with multiple burners inside furnace wall, for carrying out burner mode heating to described burner on sidewall reducing zone；
Described feed zone is provided with aqueous mixture material entrance, and described drying tube preheating zone is provided with exhanst gas outlet, and described discharge zone is provided with also
Raw material exports, and described aqueous mixture material entrance is connected with the aqueous mixture material outlet of described material processing device, is used for
Described aqueous mixture material is dried in described preheating and reduction apparatus, preheats and reduction treatment, obtains reducing material；
Described segregation apparatuss include：Reducing material entrance, ferro-nickel product outlet and tailings outlet, described reducing material entrance is pre- with described
Heat is connected with the outlet of reduction apparatus reducing material, for carrying out finally giving ferro-nickel product after slag sluicing system described reducing material
And tailings.
Inventor finds, according to this system of this utility model embodiment, is all burnt using furnace wall side wall with conventional rotary hearth furnace
The mode of mouth heating is compared, and sets up drying tube preheating zone, solve material and enter the stove initial stage because of powder in rotary hearth furnace of the present utility model
The problem that dust quantity is big and leads to burner blocking；This utility model can directly enter the flow processing laterite nickel of rotary hearth furnace using wet block
Ore deposit, shortens technological process, reduces equipment investment, production cost and energy consumption；This utility model rotary hearth furnace can be using storage
Hot type combustion technology, can reduce fuel cost using inferior or low-rank fuel, can at home and lack natural gas and high-quality
The area popularization of fuel.
According to embodiment of the present utility model, the horizontal cross-section of described preheating and reduction apparatus is annular, described drying
Pipe preheating zone annulus angle is 30 ° -100 °.
According to embodiment of the present utility model, described segregation apparatuss can be mill ore magnetic selection device or molten separating device.
This utility model at least has the advantages that：
1., compared with conventional rotary hearth furnace is all by the way of the heating of furnace wall burner on sidewall, increase in rotary hearth furnace of the present utility model
If drying tube preheating zone, solve the problems, such as that material enters the stove initial stage and leads to because Dust Capacity is big burner to block.
2. this utility model can directly enter the flow processing lateritic nickel ore of rotary hearth furnace using wet block, shortens technique stream
Journey, reduces equipment investment, production cost and energy consumption.
3. this utility model rotary hearth furnace can adopt regenerative combustion technology, can be reduced using inferior or low-rank fuel
Fuel cost, can promote with the area lacking natural gas and high-grade fuel at home.
Brief description
Fig. 1 transforms the schematic diagram of rotary hearth furnace for this utility model.
Fig. 2 processes the system schematic of lateritic nickel ore for this utility model.
Fig. 3 processes the schematic flow sheet of lateritic nickel ore for this utility model.
Wherein, feed zone 1, drying tube preheating zone 2, burner on sidewall reducing zone 3, discharge zone 4, flue 5, preheating zone and reduction
Interval partition wall 6, discharge end barricade 7, drying tube 8, burner 9, material processing device S100, lateritic nickel ore entrance 101, reduction coal enters
Mouth 102, additive entrance 103, aqueous mixture material outlet 104, preheating and reduction apparatus S200, aqueous mixture material entrance
201, reducing material outlet 202, exhanst gas outlet 203, segregation apparatuss S300, reducing material entrance 301, ferro-nickel product outlet 302,
Tailings outlet 303.
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.
The utility model proposes a kind of processing system of wet piece of lateritic nickel ore.According to embodiment of the present utility model, Fig. 1
Transform the schematic diagram of rotary hearth furnace for this utility model, Fig. 2 processes the system schematic of lateritic nickel ore, reference picture for this utility model
Shown in 1 and Fig. 2, this system includes：Material processing device S100, preheating and reduction apparatus S200, segregation apparatuss S300, wherein：
Described material processing device has lateritic nickel ore entrance 101, reduction coal entrance 102, additive entrance 103 and aqueous mixture material
Outlet 104, for being mixed described lateritic nickel ore, reducing agent and additive after treatment in proportion, obtains aqueous mixing
Material；Described preheating and reduction apparatus include：Adjacent successively feed zone 1, drying tube preheating zone 2, burner on sidewall reducing zone 3 and
Discharge zone 4；Wherein, described feed zone is provided with aqueous mixture material entrance 201, and described drying tube preheating zone is provided with exhanst gas outlet
203, described discharge zone is provided with reducing material outlet 202, and described aqueous mixture material entrance is contained with described material processing device
The outlet of aqueous mixtures material is connected, for being dried, preheating described aqueous mixture material in described preheating and reduction apparatus
And reduction treatment, obtain reducing material；Described segregation apparatuss include：Reducing material entrance 301, ferro-nickel product outlet 302 and tail
Slag outlet 303, described reducing material entrance is exported with described preheating and reduction apparatus reducing material and is connected, for by described reduction
Material finally gives ferro-nickel product and tailings after carrying out slag sluicing system.
Inventor finds, according to this system of this utility model embodiment, is all burnt using furnace wall side wall with conventional rotary hearth furnace
The mode of mouth heating is compared, and sets up drying tube preheating zone, solve material and enter the stove initial stage because of powder in rotary hearth furnace of the present utility model
The problem that dust quantity is big and leads to burner blocking；This utility model can directly enter the flow processing laterite nickel of rotary hearth furnace using wet block
Ore deposit, shortens technological process, reduces equipment investment, production cost and energy consumption；This utility model rotary hearth furnace can be using storage
Hot type combustion technology, can reduce fuel cost using inferior or low-rank fuel, can at home and lack natural gas and high-quality
The area popularization of fuel.
According to embodiment of the present utility model, the concrete species of described segregation apparatuss is unrestricted, as long as can be by material
Carry out as desired separating, according to some embodiments of the present utility model, this utility model is preferably mill ore magnetic selection device
Or molten separating device.
According to embodiment of the present utility model, described material processing device, including the breaker being sequentially connected, screening dress
Put and mixing arrangement.
According to embodiment of the present utility model, the concrete species of described breaker is unrestricted, if can reach by
Lump material is broken into the effect of suitable particle size, can be metal breaker, stone breaker, hogging device
Or plastic crushing device, according to some embodiments of the present utility model, this utility model is preferably metal breaker or stone
Breaker.
According to embodiment of the present utility model, the concrete species of described screening plant and method are unrestricted, as long as can
Play the effect with compass screen surface with holes, mixed materials different for granule size being divided into various granularity level, can be turn
Sieve or shaking screen, independent screening, auxiliary screening or dehydration screening, according to some embodiments of the present utility model, this utility model
It is preferably revolving screen or auxiliary screening.
According to embodiment of the present utility model, described preheating and reduction apparatus are improved rotary hearth furnace, wherein, rotary hearth furnace
Concrete model unrestricted, can be heat accumulating type or non-regenerative rotary hearth furnace.The level of described preheating and reduction apparatus is cut
The concrete shape in face is unrestricted, and according to some embodiments of the present utility model, this utility model is preferably annular, more preferably
, described drying tube preheating zone annulus angle is 30 ° -100 °, and this utility model rotary hearth furnace drying tube preheating zone annulus angle is not
Should be less than 30 °, if annulus angle is less than 30 °, material is too short in preheating zone remaining time, can lead to lateritic nickel ore moisture removal
Not exclusively, residual moisture removes impact material area reproducibility in reducing zone, reduces the percent reduction of valuable metal, but when rotary hearth furnace is pre-
Hot-zone annulus angle crosses senior general affects the reduction effect of reducing zone material, so controlling preheating zone annulus angle to be not more than 100 °.
According to embodiment of the present utility model, this utility model passes through to set up drying tube in described preheating and reduction apparatus
Preheating zone, this drying tube is arranged at furnace wall side wall, using heat radiation mode preheating material, with conventional rotary hearth furnace all using furnace wall side
Wall burner heating mode compare, efficiently solve the problems, such as material enter the stove initial stage lead to because Dust Capacity is larger burner block,
Drying tube heating-up temperature is 600 DEG C -1000 DEG C, and mixed material can be preheated, and effectively removes the table water in mixed material
And water of crystallization, enter stove lateritic nickel ore and typically contain the table water of 12-20% and the water of crystallization of 9-14%, if do not removed, laterite will be affected
The reduction effect of nickel in nickel minerals, reduces the response rate of nickel, so can meet the reduction of lateritic nickel ore after the preheated process of compound
Technological requirement.Pressure ball before decreasing rotary hearth furnace on the premise of not affecting product index and pelletizing stoving process, shorten
Technological process, reduces equipment investment, has that handling process is short, equipment investment is low, equipment operation rate is high, energy consumption is low, an application model
The advantages of enclose extensive.
According to embodiment of the present utility model, be provided between described drying tube preheating zone and described burner on sidewall reducing zone every
Wall 6, is provided with barricade 7, described partition wall and barricade are by described rotary hearth furnace between described burner on sidewall reducing zone and described discharge zone
Roof extend downwardly, and keep certain intervals with the cloth ring-shaped furnace bottom of described rotary hearth furnace.
According to embodiment of the present utility model, the concrete material of described preheating zone and reducing zone division wall is unrestricted, only
The effect of separation can be played, can be refractory brick or fire resisting stamp mass, according to some embodiments of the present utility model,
This utility model is preferably refractory brick.
According to embodiment of the present utility model, the concrete material of described discharge end barricade is unrestricted, as long as can play
The effect stopping, can be refractory brick or fire resisting stamp mass, according to some embodiments of the present utility model, this utility model
It is preferably refractory brick.
According to embodiment of the present utility model, described drying tube preheating zone is provided with multiple drying tubes 8, for right inside furnace wall
Described drying tube preheating zone is heated；Described burner on sidewall reducing zone is provided with multiple burners 9, for described side inside furnace wall
Wall burner reducing zone carries out burner mode heating.
According to embodiment of the present utility model, the concrete number of described drying tube and burner and shape are unrestricted, as long as
The effect of dry heat can be played, wherein, the shape of described drying tube can be p-shaped, W shape or U-shaped, according to this practicality
Some new embodiments, this utility model drying tube is preferably U-shaped, and the concrete mode of heating of described drying tube is unrestricted,
According to some embodiments of the present utility model, this utility model is preferably electrical heating, gas heating, one kind of high-temperature flue gas waste heat
Or it is several.
In other side of the present utility model, this utility model provides a kind of red using foregoing system process
The method of native nickel minerals.Fig. 3 is the schematic flow sheet that this utility model processes lateritic nickel ore, with reference to shown in Fig. 3, the method include with
Lower step：
（1）Feedstock treating：Lateritic nickel ore, reducing agent and additive are mixed after crushing, sieving in proportion, is obtained
Aqueous mixture material.
According to embodiment of the present utility model, described material processing device S100 has lateritic nickel ore entrance 101, reduction coal
Entrance 102, additive entrance 103 and aqueous mixture material outlet 104, for by described lateritic nickel ore, reducing agent and additive
Mixed in proportion after treatment, obtained aqueous mixture material.
According to embodiment of the present utility model, the concrete species of described reducing agent is unrestricted, can for coke, semicoke or
Person's reduction coal, according to some embodiments of the present utility model, this utility model is preferably reduction coal.
According to embodiment of the present utility model, raw material weight proportioning of soup processed is：Lateritic nickel ore 100 weight portion, reduction coal 10-30 weight
Amount part, additive 5-15 weight portion；Described additive be selected from alkali metal oxide, alkali metal salt, alkaline earth oxide and
One or more of alkali salt.
According to embodiment of the present utility model, described lateritic nickel ore, reducing agent and additive gained after crushing, sieving is former
The concrete granularity of material is unrestricted, and according to some embodiments of the present utility model, this utility model is preferably 10-40mm.
（2）Preheating reduction treatment：By aqueous mixture material to cloth in described preheating and reduction apparatus, with described preheating
With the operating of reduction apparatus furnace bottom, described mixed material is dried successively in drying tube preheating zone, the pre-heat treatment, then through institute
State and in burner on sidewall reducing zone, carry out reduction reaction, then discharge is exported by described reducing material and obtain reducing material.
According to embodiment of the present utility model, described preheating and reduction apparatus S200 include：Adjacent successively feed zone 1,
Drying tube preheating zone 2, burner on sidewall reducing zone 3 and discharge zone 4；Wherein, described feed zone is provided with aqueous mixture material entrance
201, described drying tube preheating zone is provided with exhanst gas outlet 203, and described discharge zone is provided with reducing material outlet 202, described aqueous mixed
The aqueous mixture material outlet closing material inlet and described material processing device is connected, for by described aqueous mixture material in institute
State in preheating and reduction apparatus and be dried, preheat and reduction treatment, obtain reducing material.
According to embodiment of the present utility model, the drying tube preheating zone heating-up temperature of described preheating and reducing zone is 600 DEG C-
1000 DEG C, the time is 20-40min；Described reducing zone adopts burner on sidewall mode of heating, and reduction temperature is 1150 DEG C -1350 DEG C,
Time is 20-50min.
（3）Separating treatment：Described reducing material is carried out after slag sluicing system through described smelting apparatus, obtain ferro-nickel product and
Tailings.
According to embodiment of the present utility model, described segregation apparatuss S300 includes：Reducing material entrance 301, ferro-nickel product
Outlet 302 and tailings outlet 303, described reducing material entrance is connected with described preheating and the outlet of reduction apparatus reducing material, uses
In described reducing material is carried out finally giving ferro-nickel product and tailings after slag sluicing system.
Embodiment 1：
From TFe20.6%, the lateritic nickel ore containing Ni 1.65%, as raw material, crushes, is sized to 10-40mm, according to red
Native nickel minerals 100 weight portion, reduction coal 10 weight portion, the part by weight dispensing of sodium carbonate 5 weight portion simultaneously mixes, and mixed material is straight
Connect to be distributed into preheat and carry out preheating reduction treatment with reduction apparatus, preheating and reduction apparatus are improved rotary hearth furnace, increasing in stove
If drying tube preheating zone, the temperature of heating is 600 DEG C, and the time is 40min；Reducing zone adopts outboard sidewalls burner mode of heating,
Reduction temperature is 1150 DEG C, and the time is 50min, and the annulus angle of preheating zone is 30 °；What preheating and reduction apparatus discharging obtained goes back
Raw material is sent into segregation apparatuss and is carried out slag sluicing system process, carries out slag sluicing system using mill ore magnetic selection technique, finally gives nickel product
Dilval for 6.2%, nickel recovery 90%.
Embodiment 2：
From TFe18.7%, the lateritic nickel ore containing Ni 1.76%, as raw material, crushes, is sized to 10-40mm, according to red
Native nickel minerals 100 weight portion, reduction coal 20 weight portion, the part by weight dispensing of limestone 15 weight portion simultaneously mixes, by mixed material
Directly it is distributed into preheating and reduction apparatus carry out preheating reduction treatment, preheating and reduction apparatus are improved rotary hearth furnace, in stove
Set up drying tube preheating zone, the temperature of heating is 800 DEG C, and the time is 30min；Reducing zone adopts outboard sidewalls burner heating side
Formula, reduction temperature is 1250 DEG C, and the time is 30min, and the annulus angle of preheating zone is 60 °；Preheating and reduction apparatus discharging obtain
Reducing material send into segregation apparatuss carry out slag sluicing system process, slag sluicing system is carried out using molten division technique, finally gives nickel product
Dilval for 16%, nickel recovery 95%.
Embodiment 3：
From TFe29.6%, the lateritic nickel ore containing Ni 1.46%, as raw material, crushes, is sized to 10-40mm, according to red
Native nickel minerals 100 weight portion, reduction coal 30 weight portion, the part by weight dispensing of quick lime 10 weight portion simultaneously mixes, by mixed material
Directly it is distributed into preheating and reduction apparatus carry out preheating reduction treatment, preheating and reduction apparatus are improved rotary hearth furnace, in interior increasing
If drying tube preheating zone, the temperature of heating is 1000 DEG C, and the time is 20min；Reducing zone adopts outboard sidewalls burner mode of heating,
Reduction temperature is 1350 DEG C, and the time is 20min, and the annulus angle of preheating zone is 100 °；Preheating and reduction apparatus discharging obtain
Reducing material is sent into segregation apparatuss and is carried out slag sluicing system process, carries out slag sluicing system using molten division technique, finally giving nickel product is
15% dilval, nickel recovery 94%.
Inventor finds, according to this system of this utility model embodiment, is all burnt using furnace wall side wall with conventional rotary hearth furnace
The mode of mouth heating is compared, and sets up drying tube preheating zone, solve material and enter the stove initial stage because of powder in rotary hearth furnace of the present utility model
The problem that dust quantity is big and leads to burner blocking；This utility model can directly enter the flow processing laterite nickel of rotary hearth furnace using wet block
Ore deposit, shortens technological process, reduces equipment investment, production cost and energy consumption；This utility model rotary hearth furnace can be using storage
Hot type combustion technology, can reduce fuel cost using inferior or low-rank fuel, can at home and lack natural gas and high-quality
The area popularization of fuel.
In the description of this specification, reference term " embodiment ", " some embodiments ", " illustrative examples ",
The description of " example ", " specific example " or " some examples " etc. means specific features, the knot describing with reference to this embodiment or example
Structure, material or feature are contained at least one embodiment of the present utility model or example.In this manual, to above-mentioned art
The schematic representation of language is not necessarily referring to identical embodiment or example.And, the specific features of description, structure, material or
Person's feature can combine in any one or more embodiments or example in an appropriate manner.
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.Of the present utility model
In description, unless otherwise stated, " multiple " are meant that two or more.
In description of the present utility model, it should be noted that unless otherwise clearly defined and limited, term " peace
Dress ", " being connected ", " connection " should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected, or integratedly
Connect；Can be to be mechanically connected or point connection；Can be to be joined directly together it is also possible to be indirectly connected to by intermediary,
It can be the connection of two element internals.For the ordinary skill in the art, above-mentioned art can be understood with concrete condition
Concrete meaning in this utility model for the language.
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 processing system of wet piece of lateritic nickel ore is it is characterised in that include：Material processing device, preheating and reduction apparatus,
Segregation apparatuss, wherein：
Described material processing device, including the breaker being sequentially connected, screening plant and mixing arrangement, described Feedstock treating dress
Put with the outlet of lateritic nickel ore entrance, reduction coal entrance, additive entrance and aqueous mixture material, for by described laterite nickel
Ore deposit, reducing agent and additive are mixed after treatment in proportion, obtain aqueous mixture material；
Described preheating and reduction apparatus are improved rotary hearth furnace, including：Adjacent feed zone, drying tube preheating zone, side successively
Wall burner reducing zone and discharge zone, wherein, are provided with partition wall between described drying tube preheating zone and described burner on sidewall reducing zone, institute
State and between burner on sidewall reducing zone and described discharge zone, be provided with barricade, described partition wall and barricade by described rotary hearth furnace roof to
Lower extension, and keep certain intervals with the cloth ring-shaped furnace bottom of described rotary hearth furnace；Wherein, inside the furnace wall of described drying tube preheating zone
It is provided with multiple drying tubes, for heating to described drying tube preheating zone；Described burner on sidewall reducing zone is provided with inside furnace wall
Multiple burners, for carrying out burner mode heating to described burner on sidewall reducing zone；Described feed zone is provided with aqueous mixture material
Entrance, described drying tube preheating zone is provided with exhanst gas outlet, and described discharge zone is provided with reducing material outlet, described aqueous mixture material
The aqueous mixture material outlet of entrance and described material processing device is connected, for by described aqueous mixture material in described preheating
Be dried in reduction apparatus, preheat and reduction treatment, obtain reducing material；
Described segregation apparatuss include：Reducing material entrance, ferro-nickel product outlet and tailings outlet, described reducing material entrance and institute
State preheating to be connected with the outlet of reduction apparatus reducing material, for carrying out finally giving ferronickel after slag sluicing system described reducing material
Product and tailings.
2. system according to claim 1 is it is characterised in that the horizontal cross-section of described preheating and reduction apparatus is annulus
Shape, described drying tube preheating zone annulus angle is 30 ° -100 °.
3. system according to claim 1 is it is characterised in that described segregation apparatuss can be mill ore magnetic selection device or molten point
Device.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201621051846.9U CN205990418U (en) | 2016-09-13 | 2016-09-13 | A kind of processing system of wet piece of lateritic nickel ore |
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| CN201621051846.9U CN205990418U (en) | 2016-09-13 | 2016-09-13 | A kind of processing system of wet piece of lateritic nickel ore |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106191363A (en) * | 2016-09-13 | 2016-12-07 | 江苏省冶金设计院有限公司 | The processing system of a kind of wet piece of lateritic nickel ore and method |
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2016
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106191363A (en) * | 2016-09-13 | 2016-12-07 | 江苏省冶金设计院有限公司 | The processing system of a kind of wet piece of lateritic nickel ore and method |
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