CN205990445U - A kind of utilization lateritic nickel ore extracts the system of nickel oxide - Google Patents
A kind of utilization lateritic nickel ore extracts the system of nickel oxide Download PDFInfo
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- CN205990445U CN205990445U CN201620859998.5U CN201620859998U CN205990445U CN 205990445 U CN205990445 U CN 205990445U CN 201620859998 U CN201620859998 U CN 201620859998U CN 205990445 U CN205990445 U CN 205990445U
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Abstract
This utility model discloses the system that a kind of utilization dilval extracts nickel oxide.The described system using dilval extraction nickel oxide includes：Melting appartus, granulation device, selective oxidation calciner and ammonia leaching ammonia still process calciner plant；Wherein, melting appartus have dilval entrance and nickel-containing molten iron outlet；Granulation device has nickel-containing molten iron entrance and dilval particle outlet, and nickel-containing molten iron entrance is connected with nickel-containing molten iron outlet；Selective oxidation calciner has dilval particle entrance, oxidizing gas entrance and product of roasting outlet, and dilval particle entrance is connected with dilval particle outlet；Ammonia leaching ammonia still process calciner plant has product of roasting entrance and nickel oxide outlet, and product of roasting entrance is connected with product of roasting outlet.This utility model can with effectively utilizes dilval by wet processing extract obtain highly purified nickel oxide (>99%), thus reducing the production cost of nickel while improving dilval value.
Description
Technical field
This utility model belong to non-ferrous metal extract field, more particularly, to a kind of using dilval extract nickel oxide be
System.
Background technology
In recent years, with the fast development of the exhausted and domestic rustless steel industry of high-grade nickel sulfide ore, low-grade laterite
Nickel minerals has become as the primary raw material producing ferro-nickel product.Wet treatment lateritic nickel ore starts from the forties in 20th century, adopts earliest
Be ammonia soaking technology, this technique is by Caron teaching inventive, so being also called Caron technique.The basic procedure of this technique is
Reduction roasting-ammonia leaching, the purpose of reduction roasting is to make silicic acid nickel and nickel oxide in lateritic nickel ore be reduced into metal to greatest extent,
Control the condition of reduction simultaneously, make most of ferrum be reduced into Fe3O4, only small part is reduced into metallic iron, and calcining uses NH again3And
CO2Metallic nickel and cobalt are converted into nickel ammonia and cobalt ammonia complex enters solution, meanwhile, metallic iron also can generate ferrum ammino-complex and enter
Enter solution, then oxidized, hydrolysis is generated ferric hydroxide precipitate and separated with ammonia leaching solution, and ammonia leaching solution obtains alkali formula carbon through ammonia still process again
Sour nickel, then calcining obtains NiO.NiO can sell it is also possible to obtain metallic nickel by hydrogen reduction as product.This technique
Shortcoming is that nickel recovery is low, and reason is when reducing lateritic nickel ore it is ensured that ferrum is tried one's best and few is reduced into metallic state, due to ferrum
Reduction has facilitation to the gathering of nickel with growing up, so this step control can cause the loss of a large amount of nickel, leads to whole piece technique
Nickel recovery low (nickel recovery is typically below 75%).Up to the present, only several, whole world factory adopts this method
Process lateritic nickel ore, three seldom have new plant to adopt ammonia soaking technology during the last ten years.
Pyrogenic attack dilval is current prevailing technology, and wherein reduction roasting-molten point has become as the focus of research.
With lateritic nickel ore as raw material, coal dust is reducing agent, using equipment of direct reduction under the high temperature conditions by the nickel in Ore all also
Former one-tenth metallic nickel, ferrum becomes metallic iron according to mixed carbon comtent partial reduction, then so that nickel is enriched in dilval through molten point of separation.At present
Dilval research is also only resided within the aspect of the raw material of its smelting stainless steel, value-added content of product is not high.
Thus, existing dilval treatment technology is further improved.
Utility model content
Only reside within the aspect of the raw material of its smelting stainless steel to solve in prior art dilval research,
The not high problem of value-added content of product, a purpose of the present utility model be to propose a kind of extract nickel from dilval be
System, this system can with effectively utilizes dilval pass through wet processing extraction obtain highly purified nickel oxide (>99%), thus
Improve the production cost reducing nickel while dilval value, the nickel recovery of whole flow process high (>95%).
The utility model proposes a kind of utilization dilval extracts the system of nickel oxide, according to enforcement of the present utility model
Example, this system includes：Melting appartus, granulation device, selective oxidation calciner and ammonia leaching-ammonia still process-calciner plant；Wherein,
Described melting appartus have dilval entrance and nickel-containing molten iron outlet；
Described granulation device has nickel-containing molten iron entrance and a dilval particle outlet, described nickel-containing molten iron entrance with described
Nickel-containing molten iron outlet is connected；
Described selective oxidation calciner has dilval particle entrance, oxidizing gas entrance and product of roasting and goes out
Mouthful, described dilval particle entrance is connected with described dilval particle outlet；
Described ammonia leaching-ammonia still process-calciner plant have product of roasting entrance and nickel oxide outlet, described product of roasting entrance and
Described product of roasting outlet is connected.
In addition, can also be had using the system that dilval extracts nickel oxide according to this utility model above-described embodiment
The technical characteristic adding as follows：
Described granulation device is atomization granulation device.
Described ammonia leaching-ammonia still process-calciner plant also includes the outlet of magnetic tailings.
In some embodiments of the present utility model, the iron content of the dilval being added in described melting appartus is 60
～90wt%, nickel content is 10～45wt%.
In some embodiments of the present utility model, the temperature of described melting appartus fusing is 1400～1600 DEG C.
In some embodiments of the present utility model, the size controlling of described dilval granule is by described granulation device
≤ 0.5 millimeter.
In some embodiments of the present utility model, the temperature of described selective oxidation calciner roasting is 300-500
DEG C, oxygen concentration is calculated as 0.5%-2% by percent by volume, and roasting time is 5-20min so that metal irony in product of roasting
Amount content is less than 5%, and the ratio that metallic nickel accounts for full nickel is more than 95%.
Thus, the system of the utilization dilval extraction nickel oxide according to this utility model embodiment can be with effectively utilizes nickel
Ferroalloy by wet processing extract obtain highly purified nickel oxide (>99%), thus improving dilval value
Reduce the production cost of nickel simultaneously, the nickel recovery of whole flow process high (>95%).
Additional aspect of the present utility model and advantage will be set forth in part in the description, partly will be from explained below
In become obvious, or recognized by practice of the present utility model.
Brief description
Fig. 1 is that the method flow of the utilization dilval extraction nickel oxide according to one embodiment of this utility model is illustrated
Figure；
Fig. 2 is that the system structure of the utilization dilval extraction nickel oxide according to one embodiment of this utility model is illustrated
Figure.
Specific embodiment
Embodiment of the present utility model is described below in detail, the example of described embodiment is shown in the drawings, wherein ad initio
To the element that same or similar label represents same or similar element or has same or like function eventually.Below by ginseng
The embodiment examining Description of Drawings is exemplary it is intended to be used for explaining this utility model, and it is not intended that to this utility model
Restriction.
In description of the present utility model it is to be understood that term " " center ", " longitudinal ", " horizontal ", " length ", " width
Degree ", " thickness ", " on ", D score, "front", "rear", "left", "right", " vertical ", " level ", " top ", " bottom ", " interior ", " outward ",
The orientation of instruction such as " clockwise ", " counterclockwise ", " axial ", " radially ", " circumferential " or position relationship are based on shown in the drawings
Orientation or position relationship, are for only for ease of description this utility model and simplify description, rather than the dress of instruction or hint indication
Put or element must have specific orientation, with specific azimuth configuration and operation, therefore it is not intended that to this utility model
Restriction.
Additionally, term " first ", " second " are only used for describing purpose, and it is not intended that indicating or hint relative importance
Or the implicit quantity indicating indicated technical characteristic.Thus, define " first ", the feature of " second " can express or
Implicitly include at least one this feature.In description of the present utility model, " multiple " are meant that at least two, such as two
Individual, three etc., unless otherwise expressly limited specifically.
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, limit unless otherwise clear and definite.Common skill for this area
For art personnel, concrete meaning in this utility model for the above-mentioned term can be understood as the case may be.
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.
This utility model discloses the system that a kind of utilization dilval extracts nickel oxide, and the extracting method of this system includes：
(1) dilval is carried out melt processed, obtain nickel-containing molten iron；
(2) nickel-containing molten iron is carried out pelletization treatment, obtain dilval granule；
(3) dilval granule is selectively oxidized roasting, obtains product of roasting；
(4) product of roasting is carried out ammonia leaching-ammonia still process-calcination processing and obtain nickel oxide product.
Inventor finds, the ferrum in dilval is mainly existed with metallic state, and metallic iron subsequently can be not suitable for ammonia reaction
Directly carry out ammonia leaching, and metallic iron is changed into Fe3O4After would not consume ammonia.Then, first dilval is carried out melt processed
Obtain nickel-containing molten iron, nickel-containing molten iron pelletization treatment obtains dilval granule.Then, by after the oxidation of dilval Selective feeding
Ferrum selective oxidation is become Fe3O4, nickel does not aoxidize, thus obtaining product of roasting；Finally product of roasting is utilized existing ripe ammonia
Leaching-ammonia still process-calcine technology obtains nickel oxide product.
Below with reference to Fig. 1, this utility model embodiment is retouched in detail using the method that dilval extracts nickel oxide
State.According to embodiment of the present utility model, the method includes：
S100：Dilval is carried out melt processed.
According to embodiment of the present utility model, dilval is carried out melt processed, such that it is able to obtain nickel-containing molten iron.
According to an embodiment of the present utility model, in dilval, the concrete content of nickel and ferrum is not particularly restricted,
Those skilled in the art can be selected according to actual needs, according to specific embodiment of the utility model, dilval nickel
Content can be 10～45wt%, and iron content can be 60～90wt%.Inventor finds, in order to obtain in existing preparation technology
Highly purified nickel, it usually needs using the higher copper nickel of nickel content, lead to raw material production cost higher, is difficult to purchase, and this
Utility model relatively low to nickel grade requirement threshold in raw material although in dilval the grade of nickel relatively low, but adopt this practicality
New method still can prepare highly purified nickel oxide (nickel oxide nickel content is higher than more than 99%), thus former widening
Reduce the production cost of nickel while material source.
According to another embodiment of the present utility model, the condition of melt processed is not particularly restricted, art technology
Personnel can be selected according to actual needs, according to specific embodiment of the utility model, melt processed can 1400～
Carry out at 1600 DEG C.
S200：Nickel-containing molten iron is carried out being atomized pelletization treatment.
According to embodiment of the present utility model, nickel-containing molten iron is carried out being atomized pelletization treatment, close such that it is able to obtain ferronickel
Gold grain.Inventor finds, is pelletized by nickel-containing molten iron is carried out with atomization, ferronickel water is pelletized, such that it is able to significantly improve
With the contact area of oxidizing gas, and then further improve dilval granule selective oxidation effect.In this step, tool
Body, atomization pelletization is to smash nickel-containing molten iron in nebulizer using High-Pressure Water or inert gas to become small liquid
Drip, more cooled, dry, obtain the dilval granule that meets dimensional requirement after screening, atomization mechanism be when High-Pressure Water or
During inert gas impact ferronickel melt, convert kinetic energy into the surface energy of ferronickel melt, form numerous fine particle.
According to another embodiment of the present utility model, dilval grain graininess is not particularly restricted, this area skill
Art personnel can be selected according to actual needs, according to specific embodiment of the utility model, the particle diameter of dilval granule
It is not more than 0.5 millimeter.Inventor finds, the dilval activity of this particle size range is higher, and during selective oxidation with
Oxidizing gas contact area is larger, such that it is able to significantly improve selective oxidation effect.
S300：Dilval granule is selectively oxidized roasting.
According to embodiment of the present utility model, dilval granule is selectively oxidized roasting, such that it is able to obtain
Product of roasting.Inventor finds, different to the affinity of oxygen with nickel using ferrum, is selectively oxidized roasting to dilval granule
Burning can make ferrum be oxidized to Fe3O4, and nickel is not oxidized, and during follow-up ammonia soaks, Fe3O4Discord ammonia reaction, thus greatly
Width reduces the consumption of ammonia.It should be noted that those skilled in the art can be according to actual needs to selective oxidation roasting bar
Part is selected.According to embodiment of the present utility model, the temperature control of described selective oxidation roasting is 300-500 DEG C,
Oxygen concentration is calculated as 0.5%-2% by percent by volume, and roasting time is 5-20min so that metallic iron in described product of roasting
Mass content is less than 5%, and the ratio that metallic nickel accounts for full nickel is more than 95%, thus, it is possible to ensure that ferrum is oxidized to Fe3O4, and nickel is not
Oxidized.
S400：Product of roasting is carried out ammonia leaching-ammonia still process-calcination processing.
According to embodiment of the present utility model, product of roasting is carried out ammonia leaching-ammonia still process-calcination processing, such that it is able to obtain
Nickel oxide product and magnetic tailings.In this step, specifically, will leach in product of roasting again ammonia-sal volatile first, simultaneously
It is blown into oxidizing gas in solution, make the nickel in product of roasting occur complex reaction to generate nickel ammine Ni with ammonia
(NH3)6 2+And entering solution, ferrum and stone-like pulse are then stayed in magnetic leached mud, leach and carry out ammonia still process operation, output alkali formula after terminating
Carbonic acid nickel (OH)2·NiCO3, eventually pass calcining and obtain nickel oxide NiO product.It should be noted that those skilled in the art
According to actual needs ammonia leaching-ammonia still process-calcination condition can be selected.
Thus, the method for the utilization dilval extraction nickel oxide according to this utility model embodiment can be with effectively utilizes nickel
Ferroalloy by wet processing extract obtain highly purified nickel oxide (>99%), thus improving dilval value
Reduce the production cost of nickel simultaneously, the nickel recovery of whole flow process high (>95%).
In yet another aspect, the utility model proposes a kind of utilization dilval extracts the system of nickel oxide.According to this
The embodiment of utility model, this system includes：Melting appartus, described melting appartus have dilval entrance and nickel-containing molten iron goes out
Mouthful, and be suitable to for described dilval to carry out melt processed, to obtain nickel-containing molten iron；Atomization granulation device, described atomization system
Grain device has nickel-containing molten iron entrance and dilval particle outlet, and described nickel-containing molten iron entrance exports phase with described nickel-containing molten iron
Connect, and be suitable to carry out being atomized pelletization treatment by described nickel-containing molten iron, to obtain dilval granule；Selective oxidation roasting fills
Put, described selective oxidation calciner has dilval particle entrance, oxidizing gas entrance and product of roasting outlet, institute
State dilval particle entrance to be connected with described dilval particle outlet, and be suitable to be selected described dilval granule
Property oxidizing roasting, to obtain product of roasting；Ammonia leaching-ammonia still process-calciner plant, described ammonia leaching-ammonia still process-calciner plant has roasting
Product inlet and nickel oxide outlet, described product of roasting entrance is connected with the outlet of described product of roasting, and is suitable to described roasting
Product carries out ammonia leaching, ammonia still process and calcination processing, to obtain nickel oxide product.Inventor finds, the ferrum in dilval is main
Existed with metallic state, metallic iron can subsequently be not suitable for directly carrying out ammonia leaching, and metallic iron is changed into Fe with ammonia reaction3O4Afterwards
Ammonia will not be consumed.Then, first dilval is carried out melt processed and obtain nickel-containing molten iron, nickel-containing molten iron pelletization treatment obtains ferronickel
Alloying pellet.Then, by after the oxidation of dilval Selective feeding, ferrum selective oxidation is become Fe3O4, nickel does not aoxidize, thus obtaining
To product of roasting；Finally product of roasting is obtained nickel oxide product using existing ripe ammonia leaching-ammonia still process-calcine technology.With now
Have technology to compare, can with effectively utilizes dilval by wet processing extract obtain highly purified nickel oxide (>99%), thus
Reduce the production cost of nickel while improving dilval value, the nickel recovery of whole flow process high (>95%).
Below with reference to Fig. 2, this utility model embodiment is retouched in detail using the system that dilval extracts nickel oxide
State.According to embodiment of the present utility model, this system includes：
Melting appartus 100：According to embodiment of the present utility model, melting appartus 100 have dilval entrance 101 and contain
Ferronickel water out 102, and be suitable to dilval be carried out melt processed, such that it is able to obtain nickel-containing molten iron.
According to an embodiment of the present utility model, in dilval, the concrete content of nickel and ferrum is not particularly restricted,
Those skilled in the art can be selected according to actual needs, according to specific embodiment of the utility model, dilval nickel
Content can be 10～45wt%, and iron content can be 60～90wt%.Inventor finds, in order to obtain in existing preparation technology
Highly purified nickel, it usually needs using the higher copper nickel of nickel content, lead to raw material production cost higher, is difficult to purchase, and this
Utility model relatively low to nickel grade requirement threshold in raw material although in dilval the grade of nickel relatively low, but adopt this practicality
New method still can prepare highly purified nickel oxide (nickel oxide nickel content is higher than more than 99%), thus former widening
Reduce the production cost of nickel while material source.
According to another embodiment of the present utility model, the condition of melt processed is not particularly restricted, art technology
Personnel can be selected according to actual needs, according to specific embodiment of the utility model, melt processed can 1400～
Carry out at 1600 DEG C.
Atomization granulation device 200, according to embodiment of the present utility model, described granulation device 200 has nickel-containing molten iron and enters
Mouthfuls 201 and dilval particle outlet 202, nickel-containing molten iron entrance 201 is connected with nickel-containing molten iron outlet 102, and be suitable to will be nickeliferous
Molten iron carries out pelletization treatment, such that it is able to obtain dilval granule.Inventor finds, by gained nickel-containing molten iron system
Grain, such that it is able to significantly improve the contact area with oxidizing gas, and then improves the selective oxidation of dilval further
Effect.
According to embodiment of the present utility model, nickel-containing molten iron is carried out being atomized pelletization treatment, close such that it is able to obtain ferronickel
Gold grain.Inventor finds, is pelletized by nickel-containing molten iron is carried out with atomization, ferronickel water is pelletized, such that it is able to significantly improve
With the contact area of oxidizing gas, and then further improve dilval granule selective oxidation effect.In this step, tool
Body, atomization pelletization is to smash nickel-containing molten iron in nebulizer using High-Pressure Water or inert gas to become small liquid
Drip, more cooled, dry, obtain the dilval granule that meets dimensional requirement after screening, atomization mechanism be when High-Pressure Water or
During inert gas impact ferronickel melt, convert kinetic energy into the surface energy of ferronickel melt, form numerous fine particle.
According to another embodiment of the present utility model, dilval grain graininess is not particularly restricted, this area skill
Art personnel can be selected according to actual needs, according to specific embodiment of the utility model, the particle diameter of dilval granule
It is not more than 0.5 millimeter.Inventor finds, the dilval activity of this particle size range is higher, and during selective oxidation with
Oxidizing gas contact area is larger, such that it is able to significantly improve selective oxidation effect.
Selective oxidation calciner 300, described selective oxidation calciner 300 has dilval particle entrance
301st, oxidizing gas entrance 302 and product of roasting outlet 303, described dilval particle entrance 301 and described dilval
Particle outlet 202 is connected, and is suitable to described dilval granule is selectively oxidized roasting, to obtain product of roasting.
Inventor finds, different to the affinity of oxygen with nickel using ferrum, being selectively oxidized roasting to dilval granule can make
Ferrum is oxidized to Fe3O4, and nickel is not oxidized, and during follow-up ammonia soaks, Fe3O4Discord ammonia reaction, is thus greatly decreased ammonia
Consumption.It should be noted that those skilled in the art can select to selective oxidation roasting condition according to actual needs
Select.According to embodiment of the present utility model, in described product of roasting, metallic iron mass content is less than 5%, and metallic nickel accounts for full nickel
Ratio is more than 95%, thus, it is possible to ensure that ferrum is oxidized to Fe3O4, and nickel is not oxidized.
Ammonia leaching-ammonia still process-calciner plant 400, described ammonia leaching-ammonia still process-calciner plant 400 has product of roasting entrance 401, oxygen
Change nickel outlet 402 and magnetic tailings outlet 403, described product of roasting entrance 401 is connected with described product of roasting outlet 303, and
It is suitable to for described product of roasting to carry out ammonia leaching, ammonia still process and calcination processing, to obtain nickel oxide product.In this device, specifically,
To leach in product of roasting again ammonia-sal volatile first, be blown into oxidizing gas in solution simultaneously, make in product of roasting
Nickel and ammonia occur complex reaction to generate nickel ammine Ni (NH3)6 2+And entering solution, ferrum and stone-like pulse then stay magnetic leached mud
In, leach and carry out ammonia still process operation, output basic carbonate nickel (OH) after terminating2·NiCO3, eventually pass calcining and obtain nickel oxide
NiO product.It should be noted that those skilled in the art can select to ammonia leaching-ammonia still process-calcination condition according to actual needs
Select.
Thus, the system of the utilization dilval extraction nickel oxide according to this utility model embodiment can be with effectively utilizes nickel
Ferroalloy by wet processing extract obtain highly purified nickel oxide (>99%), thus improving dilval value
Reduce the production cost of nickel simultaneously, the nickel recovery of whole flow process high (>95%).
Below with reference to specific embodiment, this utility model is described, it should be noted that these embodiments are only
Descriptive, and limit this utility model never in any form.
Embodiment 1
Obtain melting under the conditions of 1600 DEG C in melting furnace of dilval (containing Ni 10.00%, Fe 90.%) containing ferronickel
Then gained nickel-containing molten iron is made the dilval granule that mean diameter is 0.15mm in atomization pellet fabrication device, then will by water
Dilval granule is selectively oxidized roasting, the temperature control of described selective oxidation roasting is 400 DEG C, oxygen concentration
It is calculated as 1% by percent by volume, roasting time is 5min, metal Ferrum content 3.44% in the product of roasting obtaining, and metallic nickel accounts for
Product of roasting is finally carried out ammonia leaching-ammonia still process-calcination processing and obtains nickel oxide product (NiO grade by the ratio 97.27% of full nickel
99.52%) and magnetic tailings, send to after magnetic tailings magnetic separation as iron-smelting raw material, whole piece flow process nickel recovery 97.36%.
Embodiment 2
Fusing under the conditions of 1550 DEG C in melting furnace of dilval (containing Ni 25.85%, Fe 74.53%) is obtained nickeliferous
Then gained nickel-containing molten iron is made the dilval granule that mean diameter is 0.28mm, then in atomization pellet fabrication device by molten iron
Dilval granule is selectively oxidized roasting, the temperature control of described selective oxidation roasting is 300 DEG C, oxygen is dense
Degree is calculated as 2% by percent by volume, and roasting time is 20min, metal Ferrum content 3.64%, metallic nickel in the product of roasting obtaining
Account for the ratio 97.31% of full nickel, finally product of roasting is carried out ammonia leaching-ammonia still process-calcination processing and obtain nickel oxide product (NiO product
Position 99.12%) and magnetic tailings, send to after magnetic tailings magnetic separation as iron-smelting raw material, whole piece flow process nickel recovery 97.28%.
Embodiment 3
Fusing under the conditions of 1400 DEG C in melting furnace of dilval (containing Ni 45.00%, Fe 60.00%) is obtained nickeliferous
Then gained nickel-containing molten iron is made the dilval granule that mean diameter is 0.49mm, then in atomization pellet fabrication device by molten iron
Dilval granule is selectively oxidized roasting, the temperature control of described selective oxidation roasting is 500 DEG C, oxygen is dense
Degree is calculated as 0.5% by percent by volume, and roasting time is 15min, metal Ferrum content 4.99%, metal in the product of roasting obtaining
Nickel accounts for the ratio 95.47% of full nickel, finally product of roasting is carried out ammonia leaching-ammonia still process-calcination processing and obtains nickel oxide product (NiO
Grade 99.02%) and magnetic tailings, send to after magnetic tailings magnetic separation as iron-smelting raw material, whole piece flow process nickel recovery
95.28%.
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 and be necessarily directed to identical embodiment or example.And, the specific features of description, structure, material or feature are permissible
Any one or more embodiments or example combine in an appropriate manner.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.
What this utility model disclosure was touched upon is exemplary embodiment, in the protection defined without departing from claims
In the case of scope, each embodiment of the application can be made various changes and modifications.Therefore, described embodiment purport
Covering to fall all such changes, modifications and deformation in the protection domain of appended claims.Additionally, except context is another
Allude to outer, the word occurring in the singular includes plural form, and vice versa.In addition, unless stated otherwise, then Ren Heshi
Apply example all or part of can in conjunction with any other embodiment all or part of use.
Claims (8)
1. a kind of utilization dilval extracts the system of nickel oxide it is characterised in that including melting appartus, granulation device, selection
Property oxidizing roasting device and ammonia leaching-ammonia still process-calciner plant；Wherein,
Described melting appartus have dilval entrance and nickel-containing molten iron outlet；
Described granulation device has nickel-containing molten iron entrance and dilval particle outlet, and described nickel-containing molten iron entrance is nickeliferous with described
Molten iron outlet is connected；
Described selective oxidation calciner has dilval particle entrance, oxidizing gas entrance and product of roasting outlet,
Described dilval particle entrance is connected with described dilval particle outlet；
Described ammonia leaching-ammonia still process-calciner plant has product of roasting entrance and nickel oxide outlet, described product of roasting entrance and described
Product of roasting outlet is connected.
2. system according to claim 1 is it is characterised in that described granulation device is atomization granulation device.
3. system according to claim 1 is it is characterised in that described ammonia leaching-ammonia still process-calciner plant also includes magnetic tailings
Outlet.
4. system according to claim 1 it is characterised in that in described melting appartus added dilval iron content
For 60～90wt%.
5. system according to claim 1 it is characterised in that in described melting appartus added dilval nickel content
For 10～45wt%.
6. system according to claim 1 is it is characterised in that the temperature of described melting appartus fusing is 1400～1600
℃.
7. system according to claim 1 is it is characterised in that described granulation device is by the particle diameter of described dilval granule
It is controlled to≤0.5 millimeter.
8. system according to claim 1 is it is characterised in that the temperature of described selective oxidation calciner roasting is
300-500 DEG C, oxygen concentration is calculated as 0.5%-2% by percent by volume, and roasting time is 5-20min so that in product of roasting
Metallic iron mass content is less than 5%, and the ratio that metallic nickel accounts for full nickel is more than 95%.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106119573A (en) * | 2016-08-09 | 2016-11-16 | 江苏省冶金设计院有限公司 | A kind of method and system utilizing lateritic nickel ore to extract nickel oxide |
| CN106834678A (en) * | 2017-03-24 | 2017-06-13 | 江苏省冶金设计院有限公司 | The system and method for Treatment of Copper molten iron |
| CN113265532A (en) * | 2021-04-09 | 2021-08-17 | 广东邦普循环科技有限公司 | Method for leaching nickel-ammonia solution from nickel-iron alloy by wet method and application |
-
2016
- 2016-08-09 CN CN201620859998.5U patent/CN205990445U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106119573A (en) * | 2016-08-09 | 2016-11-16 | 江苏省冶金设计院有限公司 | A kind of method and system utilizing lateritic nickel ore to extract nickel oxide |
| CN106119573B (en) * | 2016-08-09 | 2018-08-28 | 江苏省冶金设计院有限公司 | A kind of method and system for extracting nickel oxide using lateritic nickel ore |
| CN106834678A (en) * | 2017-03-24 | 2017-06-13 | 江苏省冶金设计院有限公司 | The system and method for Treatment of Copper molten iron |
| CN113265532A (en) * | 2021-04-09 | 2021-08-17 | 广东邦普循环科技有限公司 | Method for leaching nickel-ammonia solution from nickel-iron alloy by wet method and application |
| WO2022213679A1 (en) * | 2021-04-09 | 2022-10-13 | 广东邦普循环科技有限公司 | Method for leaching nickel-ammonia solution from nickel-iron alloy in wet process and application |
| CN113265532B (en) * | 2021-04-09 | 2023-01-13 | 广东邦普循环科技有限公司 | Method for leaching nickel-ammonia solution from nickel-iron alloy by wet method and application |
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