CN107326180B - Treatment method of laterite-nickel ore - Google Patents
Treatment method of laterite-nickel ore Download PDFInfo
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- CN107326180B CN107326180B CN201710527995.0A CN201710527995A CN107326180B CN 107326180 B CN107326180 B CN 107326180B CN 201710527995 A CN201710527995 A CN 201710527995A CN 107326180 B CN107326180 B CN 107326180B
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- China
- Prior art keywords
- nickel
- mixed gas
- laterite
- nickel ore
- carbon monoxide
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Classifications
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B5/00—General methods of reducing to metals
- C22B5/02—Dry methods smelting of sulfides or formation of mattes
- C22B5/12—Dry methods smelting of sulfides or formation of mattes by gases
- C22B5/14—Dry methods smelting of sulfides or formation of mattes by gases fluidised material
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B23/00—Obtaining nickel or cobalt
- C22B23/02—Obtaining nickel or cobalt by dry processes
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B5/00—General methods of reducing to metals
- C22B5/02—Dry methods smelting of sulfides or formation of mattes
- C22B5/20—Dry methods smelting of sulfides or formation of mattes from metal carbonyls
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Abstract
The invention discloses Treatment method of laterite-nickel ore, this method comprises: contacting lateritic nickel ore with carbon monoxide and carrying out reduction reaction and oxonation, to obtain the first mixed gas and containing the residue of ferroso-ferric oxide；First mixed gas is subjected to cooling treatment, so as to isolated liquid carbonyl nickel and the second mixed gas；Liquid carbonyl nickel is subjected to resolution process, to obtain carbon monoxide and nickel, wherein the first mixed gas is the mixed gas of carbon monoxide, carbon dioxide and carbonyl nickel, and the second mixed gas is carbon monoxide and carbon dioxide.Above method process flow is short, low energy consumption, nickel extraction efficiency is available significantly improves.
Description
Technical field
The invention belongs to field of metallurgy, specifically, the present invention relates to Treatment method of laterite-nickel ore.
Background technique
The method that the method that traditional processing lateritic nickel ore extracts nickel mostly uses sulfuric acid equal solvent to leach extracts.The party
Fado there are process flows long, at high cost, the defect that energy consumption is high.Although also there is the base in above-mentioned extraction method in the related technology
Improved technique is carried out on plinth, to overcome drawbacks described above, but effect is undesirable.Therefore about lateritic nickel ore processing there are still
Further improved demand.
Summary of the invention
The present invention is directed to solve one of above-mentioned technical problem at least to a certain extent.For this purpose, one object of the present invention
It is to propose a kind of Treatment method of laterite-nickel ore, can be convenient using this method and rapidly the nickel in lateritic nickel ore is mentioned
It takes, while the efficiency for extracting nickel from lateritic nickel ore can be improved.
Treatment method of laterite-nickel ore according to an embodiment of the present invention includes: wherein to make lateritic nickel ore in multistage fluidized reaction
Reduction reaction and oxonation are contacted and carried out with carbon monoxide, to obtain the first mixed gas and containing ferroso-ferric oxide
Residue；First mixed gas is subjected to cooling treatment, so as to isolated liquid carbonyl nickel and the second mixed gas；By institute
It states liquid carbonyl nickel and carries out resolution process, to obtain carbon monoxide and nickel, wherein first mixed gas is an oxidation
The mixed gas of carbon, carbon dioxide and carbonyl nickel, second mixed gas are carbon monoxide and carbon dioxide.
The Treatment method of laterite-nickel ore of the above embodiment of the present invention is using fluidized bed and dexterously controls reaction condition, makes red
Reduction occurs for nickel oxide in native nickel minerals and oxonation obtains the carbonyl nickel of gaseous form, further by the carbonyl of gaseous form
Nickel, which carries out cooling and decomposition, can be obtained elemental nickel.Above method process flow is short, low energy consumption, nickel extraction efficiency is available aobvious
It writes and improves.
In Treatment method of laterite-nickel ore according to the above embodiment of the present invention, in a fluidized bed aoxidize lateritic nickel ore and one
It before carbon contacts and carries out reduction reaction and oxonation, can further include: place be dried in the lateritic nickel ore
Reason；1000 degrees Celsius will be heated to by the lateritic nickel ore being dried；And the carbon monoxide is heated to 1000
Degree Celsius and be forced into 5~30MPa.It is possible thereby to further increase reduction reaction and oxonation efficiency.
In Treatment method of laterite-nickel ore according to the above embodiment of the present invention, first mixed gas is subjected to cooling place
Before reason, further comprise: first mixed gas being dusted processing, and the dust of collection is back to the stream
Change bed and carries out the reduction reaction and oxonation.It is possible thereby to further increase nickel purity.
Treatment method of laterite-nickel ore according to the above embodiment of the present invention can further include: described second is mixed
Gas carries out pressure-variable adsorption and caustic dip, to obtain pure carbon monoxide；And the pure carbon monoxide is used
In the reduction reaction and oxonation.It is possible thereby to further save energy consumption.
In some embodiments of the invention, the lateritic nickel ore is limonite type lateritic nickel ore.It is possible thereby to further
Improve nickel recovery rate.
In some embodiments of the invention, the fluidized bed is multistage fluidized bed.It is possible thereby to conveniently reach reaction institute
Condition is needed, to further increase reaction efficiency.
In some embodiments of the invention, it is described drying process be carried out under 200~400 degrees Celsius, it is possible thereby to
Further increase drying efficiency.
In some embodiments of the invention, the reduction reaction and oxonation are the temperature at 210~230 degrees Celsius
It is carried out under the lower and pressure of 5~30MPa.It is possible thereby to keep nickel oxide and carbon monoxide generation reduction reaction and carbonylation anti-
It answers, and improves reaction efficiency.
In some embodiments of the invention, the cooling treatment is that the mixed gas Jing Guo dust removal process cools down
It is completed to 43 degrees Celsius or less.It is possible thereby to isolated liquid carbonyl nickel and it is gaseous contain carbon monoxide and carbon dioxide
Mixed gas.
In some embodiments of the invention, the resolution process is in 300~350 DEG C of temperature and 0.05MPa pressure
Lower progress.It is possible thereby to further increase nickel yield and purity.
Additional aspect and advantage of the invention will be set forth in part in the description, and will partially become from the following description
Obviously, or practice through the invention is recognized.
Detailed description of the invention
Above-mentioned and/or additional aspect of the invention and advantage will become from the description of the embodiment in conjunction with the following figures
Obviously and it is readily appreciated that, in which:
Fig. 1 is Treatment method of laterite-nickel ore flow diagram according to an embodiment of the invention.
Fig. 2 is Treatment method of laterite-nickel ore flow diagram in accordance with another embodiment of the present invention.
Specific embodiment
The Treatment method of laterite-nickel ore of the embodiment of the present invention is described with reference to Fig. 1 first below.
Treatment method of laterite-nickel ore according to an embodiment of the present invention includes:
S100: reduction reaction and oxonation
According to a particular embodiment of the invention, lateritic nickel ore is made to contact and be gone back with carbon monoxide in a fluidized bed first
Original reaction and oxonation, to obtain the first mixed gas and containing the residue of ferroso-ferric oxide.Wherein, the first mixed gas
For the mixed gas of carbon monoxide, carbon dioxide and carbonyl nickel.
According to a particular embodiment of the invention, in a fluidized bed, the iron first in lateritic nickel ore by Carbon monoxide reduction most
Throughout one's life at ferroso-ferric oxide, nickel oxide, which is reduced, generates nickel simple substance, and further, nickel simple substance continues that carbonylation occurs with carbon monoxide
Reaction, generates the carbonyl nickel of gaseous form.
Specifically reduction reaction formula are as follows:
FeO·OH→Fe2O3+H2O
NiO+CO→Ni+CO2
Fe2O3+CO→Fe3O4+CO2
Carbonylation formula:
Ni+4CO→Ni(CO)4。
Nickel in lateritic nickel ore is separated with most iron first from there through using the above method of the invention,
And then it extracts and obtains nickel.
The type of the applicable lateritic nickel ore of processing lateritic nickel ore method according to the above embodiment of the present invention is not by special
Limitation, such as can be limonite type lateritic nickel ore.Since the water content of limonite type lateritic nickel ore is about 30%, wherein nickel is big
Part exists in the form of nickel oxide, and reduction reaction and oxonation can directly occur for nickel oxide.Therefore red using such
Native nickel minerals, which extracts nickel, can significantly improve nickel recovery rate.
According to a particular embodiment of the invention, the above-mentioned fluidized bed for reduction reaction and oxonation can be multilevel flow
Change bed.The compressive resistance of the multistage fluidized bed is bigger, more convenient to control and reach required for reduction reaction and oxonation
Condition.According to a particular embodiment of the invention, reduction reaction and oxonation can 600~900 degrees Celsius at a temperature of with
And carried out under the pressure of 5~20MPa.It is possible thereby to further increase reduction reaction and oxonation efficiency, improves nickel and extract
Rate.
According to a particular embodiment of the invention, in order to further increase lateritic nickel ore treatment effeciency, above-mentioned lateritic nickel ore
Processing method can also include the following steps: to contact lateritic nickel ore with carbon monoxide and carry out reduction reaction and
Before oxonation, lateritic nickel ore is dried；And it is Celsius by being heated to 1000 by the lateritic nickel ore being dried
Degree；And carbon monoxide is heated to 1000 degrees Celsius and is forced into 5~30MPa.Thus by lateritic nickel ore to be processed and one
Temperature and pressure needed for carbonoxide reaches reduction reaction and oxonation in advance, and then reaction efficiency can be significantly improved, it mentions
The treatment effeciency of high lateritic nickel ore.
According to a particular embodiment of the invention, drying process can carry out under 200~400 degrees Celsius.It is possible thereby into
One step improves drying efficiency.Reaction effect can be improved in 2 weight % in the water content of lateritic nickel ore after being dried
Rate.
S200: cooling treatment
Above-mentioned the first mixed gas containing carbon monoxide, carbon dioxide and carbonyl nickel is subjected to cooling treatment, so as to
Isolated liquid carbonyl nickel and the second mixed gas；Wherein, the second mixed gas is carbon monoxide and carbon dioxide.Thus may be used
With the higher carbonyl nickel of isolated purity, and then the purity of finished product nickel can be significantly improved.
According to a particular embodiment of the invention, cooling treatment is that the mixed gas Jing Guo dust removal process is cooled to 43 is Celsius
It is completed below degree.
According to a particular embodiment of the invention, in order to further increase the purity of finished product nickel, the laterite of above-described embodiment
In nickel minerals processing method, before the first mixed gas is carried out cooling treatment, it can further include: by the first mixed gas
It is dusted processing, and the dust of collection is back to fluidized bed and carries out reduction reaction and oxonation.It is possible thereby to by gas
Residual dust in body extracts again after being separated, and then improves the purity of the second mixed gas and avoid the wasting of resources.
It according to a particular embodiment of the invention, further comprise that the second mixed gas progress pressure-variable adsorption and lye is clear
It washes, to obtain pure carbon monoxide；And pure carbon monoxide is used for reduction reaction and oxonation.It is possible thereby to
Resource utilization is improved, energy consumption is saved.S300: resolution process
Liquid carbonyl nickel is subjected to resolution process, to obtain carbon monoxide and nickel.And then it can letter by resolution process
It is single quickly and easily to obtain product nickel.According to a particular embodiment of the invention, resolution process can 300~350 DEG C of temperature with
And carried out under 0.05MPa pressure.It is possible thereby to improve decomposition efficiency, the yield of nickel is improved.
The Treatment method of laterite-nickel ore of the above embodiment of the present invention, process flow is short and easy to operate, low energy consumption, relatively passes
The leach extraction method of system is remarkably improved lateritic nickel ore treatment effeciency and nickel recovery rate.
Below with reference to specific embodiment, present invention is described, it should be noted that these embodiments are only to describe
Property, without limiting the invention in any way.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or spy described in conjunction with this embodiment or example
Point is included at least one embodiment or example of the invention.In the present specification, schematic expression of the above terms are not
Centainly refer to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be any
One or more embodiment or examples in can be combined in any suitable manner.
Although the embodiments of the present invention has been shown and described above, it is to be understood that above-described embodiment is example
Property, it is not considered as limiting the invention, those skilled in the art are not departing from the principle of the present invention and objective
In the case where can make changes, modifications, alterations, and variations to the above described embodiments within the scope of the invention.
Claims (8)
1. a kind of Treatment method of laterite-nickel ore characterized by comprising
It contacts lateritic nickel ore with carbon monoxide and carries out reduction reaction and oxonation, so as to
Obtain the first mixed gas and the residue containing ferroso-ferric oxide；
First mixed gas is subjected to cooling treatment, so as to isolated liquid carbonyl nickel and the second mixed gas；
The liquid carbonyl nickel is subjected to resolution process, to obtain carbon monoxide and nickel,
Wherein,
First mixed gas is the mixed gas of carbon monoxide, carbon dioxide and carbonyl nickel, second mixed gas
For carbon monoxide and carbon dioxide；
The reduction reaction and oxonation be 600~900 degrees Celsius at a temperature of and 5~20MPa pressure under carry out
's.
2. Treatment method of laterite-nickel ore according to claim 1, which is characterized in that make laterite in multistage fluidized reactor
Before nickel minerals contacts with carbon monoxide and carries out reduction reaction and oxonation, further comprise:
The lateritic nickel ore is dried；
1000 degrees Celsius will be heated to by the lateritic nickel ore being dried；And
The carbon monoxide is heated to 200~300 degrees Celsius and is forced into 5~30MPa.
3. Treatment method of laterite-nickel ore according to claim 1, which is characterized in that cool down first mixed gas
Before processing, further comprise:
First mixed gas is dusted processing, and the dust of collection is back to the multistage fluidized reactor
Carry out the reduction reaction and oxonation.
4. Treatment method of laterite-nickel ore according to claim 1, which is characterized in that further comprise:
Second mixed gas is subjected to pressure-variable adsorption and caustic dip, to obtain pure carbon monoxide；And
The pure carbon monoxide is used for the reduction reaction and oxonation.
5. Treatment method of laterite-nickel ore according to claim 1, which is characterized in that the lateritic nickel ore is limonite type laterite
Nickel minerals.
6. Treatment method of laterite-nickel ore according to claim 2, which is characterized in that the drying process is taken the photograph 200~400
It is carried out under family name's degree.
7. Treatment method of laterite-nickel ore according to claim 1, which is characterized in that the cooling treatment is will be by dedusting
The mixed gas of reason is cooled to 43 degrees Celsius or less and completion.
8. Treatment method of laterite-nickel ore according to claim 1, which is characterized in that the resolution process is taken the photograph 300~350
It is carried out at family name's degree temperature and 0.05MPa pressure.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710527995.0A CN107326180B (en) | 2017-06-30 | 2017-06-30 | Treatment method of laterite-nickel ore |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710527995.0A CN107326180B (en) | 2017-06-30 | 2017-06-30 | Treatment method of laterite-nickel ore |
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| CN107326180A CN107326180A (en) | 2017-11-07 |
| CN107326180B true CN107326180B (en) | 2019-03-01 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101845530A (en) * | 2009-03-26 | 2010-09-29 | 宝山钢铁股份有限公司 | Process for producing nickel-containing iron alloy from laterite on fluidized bed |
| CN103421924A (en) * | 2013-07-10 | 2013-12-04 | 中国恩菲工程技术有限公司 | Fluidization laterite ore reducing method |
| CN104531933A (en) * | 2014-12-26 | 2015-04-22 | 北京神雾环境能源科技集团股份有限公司 | Method for producing high-quality nickel-iron alloy by reducing laterite-nickel ore under control |
| CN105033262A (en) * | 2015-08-12 | 2015-11-11 | 北京神雾环境能源科技集团股份有限公司 | Method and system for preparing nickel carbonyl powder from ferronickel powder |
-
2017
- 2017-06-30 CN CN201710527995.0A patent/CN107326180B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101845530A (en) * | 2009-03-26 | 2010-09-29 | 宝山钢铁股份有限公司 | Process for producing nickel-containing iron alloy from laterite on fluidized bed |
| CN103421924A (en) * | 2013-07-10 | 2013-12-04 | 中国恩菲工程技术有限公司 | Fluidization laterite ore reducing method |
| CN104531933A (en) * | 2014-12-26 | 2015-04-22 | 北京神雾环境能源科技集团股份有限公司 | Method for producing high-quality nickel-iron alloy by reducing laterite-nickel ore under control |
| CN105033262A (en) * | 2015-08-12 | 2015-11-11 | 北京神雾环境能源科技集团股份有限公司 | Method and system for preparing nickel carbonyl powder from ferronickel powder |
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| CN107326180A (en) | 2017-11-07 |
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