CN206721296U - The system for handling tailings in vanadium extraction and lateritic nickel ore - Google Patents
The system for handling tailings in vanadium extraction and lateritic nickel ore Download PDFInfo
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- CN206721296U CN206721296U CN201720301979.5U CN201720301979U CN206721296U CN 206721296 U CN206721296 U CN 206721296U CN 201720301979 U CN201720301979 U CN 201720301979U CN 206721296 U CN206721296 U CN 206721296U
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- 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
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- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
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Abstract
The utility model discloses a kind of system for handling tailings in vanadium extraction and lateritic nickel ore, the system includes：Mixing arrangement, there is tailings in vanadium extraction entrance, lateritic nickel ore entrance, reducing agent entrance, additives containing calcium entrance and mixed material outlet；Shaped device, there is mixed material entrance and the outlet of mixing pelletizing；Reduction roasting device, there is mixing pelletizing entrance and metallized pellet outlet；Mill ore magnetic selection device, there is metallized pellet entrance, the outlet of low ferronickel powder and the outlet of the first tailings；Molten separating device, there is low ferronickel powder entrance, dilval outlet and the outlet of the second tailings.The system can realize effective recovery of nickel in lateritic nickel ore, and the dilval of gained has higher quality, the content of nickel is not less than 5.1wt%, the content of iron is not less than 90.3wt%, the rate of recovery of nickel is not less than 90%, the problem of lateritic nickel ore nickel recovery is low is not only solved, and fundamentally solves the problem that tailings in vanadium extraction utilization rate is low and stores up for a long time.
Description
Technical field
The utility model belongs to metal smelt field, specifically, the utility model is related to processing tailings in vanadium extraction and laterite
The system of nickel minerals.
Background technology
Climb steel vanadium titano-magnetite and smelted in blast furnace and obtain pig iron containing vanadium, then after aoxidizing vanadium by selective oxidation molten iron
Into clinker, V is obtained2O5Content is 14wt%~22wt% vanadium slag, and above-mentioned vanadium slag is oxidized to be calcined, is obtained after wet-leaching
Leached mud, i.e. tailings in vanadium extraction.Tailings in vanadium extraction is that vanadium slag extracts barium oxide by processes such as sodium oxide baking, acidleach
About 300,000 tons of tailings in vanadium extraction about discharges every year in caused solid waste afterwards, national vanadium enterprise, and with vanadium enterprise production capacity
Continuous expansion, the discharge capacity of tailings in vanadium extraction will also gradually step up, and so many waste residue is accumulated throughout the year, not only occupies a large amount of soil
Ground, and environmental pollution can be caused.
Nickel has good mechanical strength, ductility and chemical stability as a kind of important strategy metal.In the world
Minable nickel resources have two classes, and one kind is sulphide ore, and another kind of is lateritic nickel ore.Because sulphide ore extraction process is ripe,
60% nickel yield derives from sulphide ore, and the world is available for the vulcanization ore resources of exploitation few in the recent period, and sulphide ore provides in addition
Source exploration cycle and construction period are longer, and development and utilization is relatively difficult, and lateritic nickel ore aboundresources, mining cost
Low, dressing and smelting process tends to be ripe, can produce a variety of intermediate products such as nickel oxide, sulphur nickel, ferronickel, and mineral resources is leaned on sea, is readily transported, but
The rate of recovery of existing lateritic nickel ore nickel is low.
Therefore, how effectively to handle tailings in vanadium extraction and lateritic nickel ore turns into urgent problem to be solved.
Utility model content
The utility model is intended to one of technical problem at least solving in correlation technique to a certain extent.Therefore, this reality
It is to propose a kind of system for handling tailings in vanadium extraction and lateritic nickel ore with a new purpose.The system can realize laterite nickel
Effective recovery of nickel in ore deposit, and the dilval of gained has higher quality, the content of nickel is not less than 5.1wt%, and iron contains
Amount is not less than 90.3wt%, and the rate of recovery of nickel is not less than 90%, not only solves the problem of lateritic nickel ore nickel recovery is low, and
Fundamentally solves the problem that tailings in vanadium extraction utilization rate is low and stores up for a long time.
In one side of the present utility model, the utility model proposes it is a kind of handle tailings in vanadium extraction and lateritic nickel ore be
System, according to embodiment of the present utility model, the system includes：
There is tailings in vanadium extraction entrance, lateritic nickel ore entrance, reducing agent entrance, calcic to add for mixing arrangement, the mixing arrangement
Agent entrance and mixed material is added to export；
Shaped device, the shaped device have mixed material entrance and the outlet of mixing pelletizing, the mixed material entrance
It is connected with mixed material outlet；
Reduction roasting device, the reduction roasting device has mixing pelletizing entrance and metallized pellet outlet, described mixed
Pelletizing entrance is closed with the mixing pelletizing outlet to be connected；
Ore grinding-concentration equipment, the ore grinding-concentration equipment have metallized pellet entrance, low ferronickel powder outlet and first
Tailings exports, and the metallized pellet entrance is connected with metallized pellet outlet；
Molten separating device, the molten separating device has low ferronickel powder entrance, dilval outlet and the outlet of the second tailings, described
Low ferronickel powder entrance is connected with the low ferronickel powder outlet.
According to the utility model embodiment processing tailings in vanadium extraction and lateritic nickel ore system by by tailings in vanadium extraction with it is red
Native nickel minerals, reducing agent and additives containing calcium are mixed, are molded, reduction roasting, mill ore magnetic selection and molten office reason, on the one hand, carry
Sodium oxide molybdena and potassium oxide in vanadium tailing soil can be with the gasifications of catalytic reducer, so as to promote the reduction of nickel；On the other hand, vanadium extraction tail
Sodium oxide molybdena and potassium oxide in slag can be as the fluxing agents in reduction roasting processing procedure, and simultaneous oxidation sodium and potassium oxide can be with
Nickel oxide (Na is displaced from olivine2O+2NiO·SiO2=Na2O·SiO2+ 2NiO, K2O+2NiO·SiO2=K2O·
SiO2+ 2NiO) so that nickel oxide has higher activity, so as to reduce the temperature of reduction roasting processing, reduces the energy of system
Consumption, and can further promote the reduction of metallic nickel；Another further aspect, additives containing calcium further catalytic reducer can gasify,
Promote the reduction of nickel, improve the rate of recovery of nickel, and additives containing calcium can be used as fluxing agent, improve the reaction of nickeliferous silicate
Activity, optimize the condition of the agglomeration of metal nickel-iron particle, be easy to the recovery of ferronickel particle, and be advantageous to the removing of impurity,
Improve the quality of gained dilval product.Other inventor had been surprisingly found that by many experiments, and the iron in tailings in vanadium extraction can be with
The recovery of nickel in lateritic nickel ore is obviously promoted, so as to further improve the quality of ferro-nickel product so that nickel contains in dilval
Amount is not less than 5.1wt%, and the content of iron is not less than 90.3wt%, and the rate of recovery of nickel is not less than 90%.Thus, using the system not
Only solve the problems, such as that lateritic nickel ore nickel recovery is low, and fundamentally solve the low and long-term heap of tailings in vanadium extraction utilization rate
The problem deposited.
In addition, according to the processing tailings in vanadium extraction of the utility model above-described embodiment and the system of lateritic nickel ore, can also have
There is technical characteristic additional as follows：
Optional, the shaped device is disc balling machine or two pairs of rollers ball press.Thus, be advantageous to improve mixed material into
The efficiency of type processing, while can obtain the mixing pelletizing that mechanical strength meets reduction roasting treatment conditions.
Optional, the reduction roasting device is rotary hearth furnace.Thus, be advantageous to improve the reduction roasting processing of mixing pelletizing
Efficiency, while save energy consumption.
Optional, the molten packing, which is set to combustion gas and melted, divides stove.Thus, be advantageous to improve the quality of gained dilval.
Additional aspect and advantage of the present utility model will be set forth in part in the description, partly by from following description
In become obvious, or by it is of the present utility model practice recognize.
Brief description of the drawings
Of the present utility model above-mentioned and/or additional aspect and advantage will in the description from combination accompanying drawings below to embodiment
Become obvious and be readily appreciated that, wherein：
Fig. 1 is illustrated according to the processing tailings in vanadium extraction of the utility model one embodiment and the system architecture of lateritic nickel ore
Figure；
Fig. 2 is to handle vanadium extraction tail according to the processing tailings in vanadium extraction of the utility model one embodiment and the system of lateritic nickel ore
The method flow schematic diagram of slag and lateritic nickel ore.
Embodiment
Embodiment of the present utility model is described below in detail, the example of the embodiment is shown in the drawings, wherein from beginning
Same or similar element is represented to same or similar label eventually or there is the element of same or like function.Below by ginseng
The embodiment for examining accompanying drawing description is exemplary, it is intended to for explaining the utility model, and it is not intended that to the utility model
Limitation.
In the utility model, unless otherwise clearly defined and limited, term " installation ", " connected ", " connection ", " Gu
It is fixed " etc. term should be interpreted broadly, for example, it may be fixedly connected or be detachably connected, or integrally；Can be
Mechanically connect or electrically connect；Can be joined directly together, can also be indirectly connected by intermediary, can be two
The connection of element internal or the interaction relationship of two elements, limited unless otherwise clear and definite.For the common skill of this area
For art personnel, concrete meaning of the above-mentioned term in the utility model can be understood as the case may be.
In one side of the present utility model, the utility model proposes it is a kind of handle tailings in vanadium extraction and lateritic nickel ore be
System, according to embodiment of the present utility model, with reference to figure 1, the system includes：Mixing arrangement 100, shaped device 200, reduction roasting
Device 300, ore grinding-concentration equipment 400 and molten separating device 500.
According to embodiment of the present utility model, mixing arrangement 100 has tailings in vanadium extraction entrance 101, lateritic nickel ore entrance
102nd, reducing agent entrance 103, additives containing calcium entrance 104 and mixed material outlet 105, and be suitable to tailings in vanadium extraction, laterite nickel
Ore deposit, reducing agent and additives containing calcium carry out mixed processing, to obtain mixed material.Specifically, tailings in vanadium extraction can be vanadium slag
The caused solid waste after the processes such as sodium oxide baking, acidleach extract barium oxide.It should be noted that
The particular type of reducing agent is not particularly restricted, and those skilled in the art can be selected according to being actually needed, such as
Can be at least one of reduction coal, coke, semi-coke and semicoke.Inventor has found, by by tailings in vanadium extraction and lateritic nickel ore,
Reducing agent and additives containing calcium are mixed, on the one hand, sodium oxide molybdena and potassium oxide in tailings in vanadium extraction can be with subsequent process
The gasification of catalytic reducer, so as to promote the reduction of nickel；On the other hand, the sodium oxide molybdena in tailings in vanadium extraction and potassium oxide can conducts
Fluxing agent in reduction roasting processing procedure, simultaneous oxidation sodium and potassium oxide can displace nickel oxide (Na from olivine2O+
2NiO·SiO2=Na2O·SiO2+ 2NiO, K2O+2NiO·SiO2=K2O·SiO2+ 2NiO) so that nickel oxide has higher
Activity, so as to reduce reduction roasting processing temperature, reduce the energy consumption of system, and can further promote metallic nickel also
It is former；Another further aspect, additives containing calcium catalytic reducer can further gasify, promote the reduction of nickel, improve the rate of recovery of nickel, and
Additives containing calcium can be used as fluxing agent, improve the reactivity of nickeliferous silicate, optimize the agglomeration of metal nickel-iron particle
Condition, be easy to the recovery of ferronickel particle, and be advantageous to the removing of impurity, improve the quality of gained dilval product.In addition
Inventor has been surprisingly found that the iron in tailings in vanadium extraction can be obviously promoted the recovery of nickel in lateritic nickel ore by many experiments, so as to
The quality of ferro-nickel product is further improved, so as to not only solve thing problems, such as that lateritic nickel ore nickel recovery is low, and from root
Solves the problem that tailings in vanadium extraction utilization rate is low and stores up for a long time in sheet.
According to one embodiment of the present utility model, in tailings in vanadium extraction the total mass fraction of sodium oxide molybdena and potassium oxide not by
Especially limitation, those skilled in the art can be selected according to being actually needed, according to one of the present utility model specific implementation
, the total mass fraction of sodium oxide molybdena and potassium oxide can be not less than 6wt% in tailings in vanadium extraction.Inventor find, if sodium oxide molybdena and
The total mass fraction of potassium oxide is too low, then the reduction effect of nickel is bad, and final products nickel grade is low, and the rate of recovery of nickel is low.
According to further embodiment of the present utility model, the mass fraction of nickel is not particularly restricted in lateritic nickel ore, this
Art personnel can be selected according to being actually needed, according to a specific embodiment of the present utility model, lateritic nickel ore
The mass fraction of middle nickel can be not less than 1.8wt%.Inventor has found, if the mass fraction of nickel is too low in lateritic nickel ore, leads
Cause the grade of final dilval product low.
According to another embodiment of the present utility model, tailings in vanadium extraction and lateritic nickel ore, reducing agent, additives containing calcium it is mixed
Close mass ratio to be not particularly restricted, those skilled in the art can be selected according to being actually needed, according to the utility model
A specific embodiment, tailings in vanadium extraction and lateritic nickel ore, reducing agent, the mixing quality ratio of additives containing calcium can be (50~
150)：100：(10~30)：(5~20).Inventor has found that the amount of tailings in vanadium extraction is unsuitable too high or too low, when tailings in vanadium extraction is matched somebody with somebody
Enter amount it is too low when, it is inadequate equivalent to the sodium oxide molybdena and the amount of potassium oxide matched somebody with somebody outside, can seriously reduce nickel recovery, and to final iron produce
Copper content diluting effect in product also unobvious；And when tailings in vanadium extraction amount of allocating is too high, the shaping of mixed material can be caused to be stranded
It is difficult.When the dosage of reducing agent is too low, the reduction reaction of nickel is carried out insufficient, and nickel recovery in lateritic nickel ore can be caused low；
And when reducing agent dosage is too high, excessive iron also can be reduced together into final products, cause nickel grade in ferro-nickel product to drop
It is low, so as to reduce the economic value of ferro-nickel product.And inventor is had been surprisingly found that by many experiments, by tailings in vanadium extraction, laterite
Nickel minerals, reducing agent and additives containing calcium are according to mass ratio (50~150)：100：(10~30)：, can when (5~20) are mixed
To give full play to the catalysis of sodium oxide molybdena and potassium oxide and fluxing action in tailings in vanadium extraction, and ensure gained ferro-nickel product have compared with
High market value.
According to another embodiment of the present utility model, the type of additives containing calcium is not particularly restricted, this area skill
Art personnel can be selected according to being actually needed, and according to a specific embodiment of the present utility model, additives containing calcium can be with
For selected from least one of calcium oxide, calcium carbonate and calcium hydroxide.Inventor has found, can enter one using such additives containing calcium
Catalytic reducer gasification is walked, promotes the reduction of nickel, improves the rate of recovery of nickel, and additive can be used as fluxing agent, and raising contains
The reactivity of nisiloy hydrochlorate, optimize the condition of the agglomeration of metal nickel-iron particle, be easy to the recovery of ferronickel particle, and favorably
In the removing of impurity, the quality of raising gained dilval product.
According to embodiment of the present utility model, shaped device 200 has mixed material entrance 201 and the outlet of mixing pelletizing
202, mixed material entrance 201 is connected with mixed material outlet 105, and suitable for mixed material is carried out into forming processes, so as to
To mixing pelletizing.Inventor has found, by the way that said mixture material is carried out into forming processes, obtains having the mixed of certain mechanical strength
Pelletizing is closed, the contact area of tailings in vanadium extraction and lateritic nickel ore, reducing agent and additive in mixed material can be dramatically increased so that be mixed
Tailings in vanadium extraction in compound material fully contacts with lateritic nickel ore, reducing agent and additive, is advantageous to improve mixing pelletizing follow-up
Reduction efficiency in reduction roasting processing procedure, reduce the energy consumption of reduction roasting device.
According to one embodiment of the present utility model, shaped device is not particularly restricted, and those skilled in the art can be with
Selected according to being actually needed, according to a specific embodiment of the present utility model, shaped device can be disc balling machine
Or two pairs of rollers ball press.Thus, be advantageous to improve the efficiency of mixed material forming processes, while can obtain mechanical strength and meet reduction
The mixing pelletizing of calcination process condition.It should be noted that those skilled in the art can mix according to being actually needed to gained
The particle diameter of pelletizing is selected.
According to embodiment of the present utility model, reduction roasting device 300 has mixing pelletizing entrance 301 and metallized pellet
Outlet 302, mixing pelletizing entrance 301 are connected with mixing pelletizing outlet 202, and suitable for mixing pelletizing is carried out at reduction roasting
Reason, to obtain metallized pellet.Inventor has found, when mixing pelletizing progress reduction roasting processing, on the one hand, tailings in vanadium extraction
In sodium oxide molybdena and potassium oxide can be with the gasification of catalytic reducer, so as to promote the reduction of nickel；On the other hand, in tailings in vanadium extraction
Sodium oxide molybdena and potassium oxide can be as the fluxing agents in reduction roasting processing procedure, and simultaneous oxidation sodium and potassium oxide can be from olives
Nickel oxide (Na is displaced in stone2O+2NiO·SiO2=Na2O·SiO2+ 2NiO, K2O+2NiO·SiO2=K2O·SiO2+
2NiO) so that nickel oxide has higher activity, so as to reduce the temperature of reduction roasting processing, reduces the energy consumption of system, and
The reduction of metallic nickel can further be promoted；Another further aspect, additives containing calcium further catalytic reducer can gasify, and promote nickel
Reduction, the rate of recovery of nickel is improved, and additives containing calcium can be used as fluxing agent, improve the reactivity of nickeliferous silicate, it is excellent
Change the condition of the agglomeration of metal nickel-iron particle, be easy to the recovery of ferronickel particle, and be advantageous to the removing of impurity, improve follow-up
The quality of gained dilval product, in addition inventor have been surprisingly found that the iron in tailings in vanadium extraction can be obvious by many experiments
Promote the recovery of nickel in lateritic nickel ore, so as to further improve the quality of ferro-nickel product,.
According to one embodiment of the present utility model, reduction roasting device is not particularly restricted, those skilled in the art
It can be selected according to being actually needed, according to a specific embodiment of the present utility model, reduction roasting device can be to turn
Bottom stove.Thus, be advantageous to improve the efficiency of mixing pelletizing reduction roasting processing, while save energy consumption.
According to further embodiment of the present utility model, the condition of reduction roasting processing is not particularly restricted, this area
Technical staff can be selected according to being actually needed, according to a specific embodiment of the present utility model, reduction roasting processing
Temperature can be 1300~1400 degrees Celsius, the time can be 30~90min.Inventor's discovery, if reduction roasting processing
Temperature is too low or the time is too short, then the reduction reaction of nickel is carried out insufficient, causes the rate of recovery of nickel low；And if at reduction roasting
The temperature of reason is too high or overlong time, then not only wastes energy, can not improve the recovery index of nickel, it is also possible to make excessive iron also
Original enters final products, reduces final products nickel grade.
According to embodiment of the present utility model, ore grinding-concentration equipment 400 has metallized pellet entrance 401, low ferronickel powder
The tailings outlet 403 of outlet 402 and first, metallized pellet entrance 401 is connected with metallized pellet outlet 302, and is suitable to gold
Belong to pellet and carry out ore grinding and magnetic separation processing, to obtain low ferronickel powder and the first tailings.Inventor has found, by that will metallize
Pelletizing carries out ore grinding processing, and metallized pellet can be worn into the particulate matter for being easy to magnetic separation to handle, can be by particulate matter after magnetic separation
Nickel and it is ferromagnetic elect, the first tailings is left, in this way, the recovery of ferronickel can be realized tentatively.Specifically, in the low ferronickel powder of gained
Nickel mass fraction 2~4%, weight of iron fraction 40~60%.
According to embodiment of the present utility model, melting separating device 500 has low ferronickel powder entrance 501, dilval outlet 502
With the second tailings outlet 503, low ferronickel powder entrance 501 is connected with low ferronickel powder outlet 402, and suitable for low ferronickel powder is melted
Office is managed, to obtain dilval and the second tailings.Inventor has found that the low ferronickel powder as obtained by by ore grinding-magnetic separation enters
The molten office reason of row, the tailings in low ferronickel powder can be removed further, obtain more high-grade dilval.Specifically, ferronickel
The content of nickel is not less than 5.1wt% in alloy, and the content of iron is not less than 90.3wt%, and the rate of recovery of nickel is not less than 90%.
According to one embodiment of the present utility model, molten separating device is not particularly restricted, and those skilled in the art can be with
Selected according to being actually needed, according to a specific embodiment of the present utility model, molten separating device, which can be that combustion gas is molten, divides stove.
Thus, be advantageous to improve the quality of gained dilval.
According to the utility model embodiment processing tailings in vanadium extraction and lateritic nickel ore system, by by tailings in vanadium extraction with it is red
Native nickel minerals, reducing agent and additives containing calcium are mixed, are molded, reduction roasting, mill ore magnetic selection and molten office reason, on the one hand, carry
Sodium oxide molybdena and potassium oxide in vanadium tailing soil can be with the gasifications of catalytic reducer, so as to promote the reduction of nickel；On the other hand, vanadium extraction tail
Sodium oxide molybdena and potassium oxide in slag can be as the fluxing agents in reduction roasting processing procedure, and simultaneous oxidation sodium and potassium oxide can be with
Nickel oxide (Na is displaced from olivine2O+2NiO·SiO2=Na2O·SiO2+ 2NiO, K2O+2NiO·SiO2=K2O·
SiO2+ 2NiO) so that nickel oxide has higher activity, so as to reduce the temperature of reduction roasting processing, reduces the energy of system
Consumption, and can further promote the reduction of metallic nickel；Another further aspect, additives containing calcium further catalytic reducer can gasify,
Promote the reduction of nickel, improve the rate of recovery of nickel, and additives containing calcium can be used as fluxing agent, improve the reaction of nickeliferous silicate
Activity, optimize the condition of the agglomeration of metal nickel-iron particle, be easy to the recovery of ferronickel particle, and be advantageous to the removing of impurity,
Improve the quality of gained dilval product.Other inventor had been surprisingly found that by many experiments, and the iron in tailings in vanadium extraction can be with
The recovery of nickel in lateritic nickel ore is obviously promoted, so as to further improve the quality of ferro-nickel product so that nickel contains in dilval
Amount is not less than 5.1wt%, and the content of iron is not less than 90.3wt%, and the rate of recovery of nickel is not less than 90%.Thus, using the system not
Only solve the problems, such as that lateritic nickel ore nickel recovery is low, and fundamentally solve the low and long-term heap of tailings in vanadium extraction utilization rate
The problem deposited.
Thus, under at least being had according to the system of the processing tailings in vanadium extraction of the utility model above-described embodiment and lateritic nickel ore
One of described in row a little：
According to the processing tailings in vanadium extraction of the utility model embodiment and the system of lateritic nickel ore, by by tailings in vanadium extraction, red
Native nickel minerals and reducing agent mixing, on the one hand, sodium oxide molybdena and potassium oxide in tailings in vanadium extraction can be gasified with catalytic reducer, so as to promote
Enter the reduction of nickel, on the other hand, sodium oxide molybdena and potassium oxide in tailings in vanadium extraction can as the fluxing agent in reducing roasting process,
Simultaneous oxidation sodium and potassium oxide can displace nickel oxide from olivine so that nickel oxide has higher activity, and then drops
The temperature of low reduction roasting processing, further promotes the reduction of metallic nickel；
According to the processing tailings in vanadium extraction of the utility model embodiment and the system of lateritic nickel ore, by by tailings in vanadium extraction, corruption
Soil layer lateritic nickel ore, reduction coal and additive mixing are grown, is not required to be incorporated binding agent, mixed material shaping is easy, can be expired
The mixing pelletizing of sufficient intensity requirement；
According to the processing tailings in vanadium extraction of the utility model embodiment and the system of lateritic nickel ore, solves tailings in vanadium extraction utilization
Rate is low and the problem stored up for a long time, while realizes effective recovery of nickel in lateritic nickel ore, and gained ferro-nickel product have compared with
High quality.
In order to facilitate understanding, below with reference to Fig. 2 to the processing tailings in vanadium extraction and laterite nickel using the utility model embodiment
The system processing tailings in vanadium extraction of ore deposit and the method for lateritic nickel ore are described in detail, according to embodiment of the present utility model, reference
Fig. 2, this method include：
S100：Tailings in vanadium extraction, lateritic nickel ore, reducing agent and additives containing calcium are supplied into mixing arrangement and carried out at mixing
Reason
In the step, tailings in vanadium extraction, lateritic nickel ore, reducing agent and additives containing calcium are supplied and mixed into mixing arrangement
Conjunction is handled, to obtain mixed material.Specifically, tailings in vanadium extraction, which is vanadium slag, passes through the processes such as sodium oxide baking, acidleach by vanadium
Oxide caused solid waste after extracting.It should be noted that the particular type of reducing agent is not particularly restricted,
Those skilled in the art can be selected according to being actually needed, such as can be in reduction coal, coke, semi-coke and semicoke
At least one.Inventor has found, on the one hand, sodium oxide molybdena and potassium oxide in tailings in vanadium extraction can be catalyzed reduction in subsequent process
The gasification of agent, so as to promote the reduction of nickel；On the other hand, the sodium oxide molybdena in tailings in vanadium extraction and potassium oxide can be used as reduction roasting
Fluxing agent in processing procedure, simultaneous oxidation sodium and potassium oxide can displace nickel oxide (Na from olivine2O+2NiO·
SiO2=Na2O·SiO2+ 2NiO, K2O+2NiO·SiO2=K2O·SiO2+ 2NiO) so that nickel oxide has higher activity,
So as to reduce the temperature of reduction roasting processing, the energy consumption of system is reduced, and can further promote the reduction of metallic nickel；Further
Aspect, additives containing calcium catalytic reducer can further gasify, promote the reduction of nickel, improve the rate of recovery of nickel, and calcic adds
Add agent to be used as fluxing agent, improve the reactivity of nickeliferous silicate, optimize the condition of the agglomeration of metal nickel-iron particle,
It is easy to the recovery of ferronickel particle, and is advantageous to the removing of impurity, improves the quality of gained dilval product.Other inventor is led to
Cross many experiments to have been surprisingly found that, the iron in tailings in vanadium extraction can be obviously promoted the recovery of nickel in lateritic nickel ore, so as to further carry
The quality of high ferro-nickel product, so as to not only solve the problems, such as that lateritic nickel ore nickel recovery is low, and fundamentally solve
Tailings in vanadium extraction utilization rate is low and the problem stored up for a long time.
According to one embodiment of the present utility model, in tailings in vanadium extraction the total mass fraction of sodium oxide molybdena and potassium oxide not by
Especially limitation, those skilled in the art can be selected according to being actually needed, according to one of the present utility model specific implementation
, the total mass fraction of sodium oxide molybdena and potassium oxide can be not less than 6wt% in tailings in vanadium extraction.Inventor find, if sodium oxide molybdena and
The total mass fraction of potassium oxide is too low, then the reduction effect of nickel is bad, and final products nickel grade is low, and the rate of recovery of nickel is low.
According to further embodiment of the present utility model, the mass fraction of nickel is not particularly restricted in lateritic nickel ore, this
Art personnel can be selected according to being actually needed, according to a specific embodiment of the present utility model, lateritic nickel ore
The mass fraction of middle nickel can be not less than 1.8wt%.Inventor has found, if the mass fraction of nickel is too low in lateritic nickel ore, leads
Cause the grade of final dilval product low.
According to another embodiment of the present utility model, tailings in vanadium extraction and lateritic nickel ore, reducing agent, additives containing calcium it is mixed
Close mass ratio to be not particularly restricted, those skilled in the art can be selected according to being actually needed, according to the utility model
A specific embodiment, tailings in vanadium extraction and lateritic nickel ore, reducing agent, the mixing quality ratio of additives containing calcium can be (50~
150)：100：(10~30)：(5~20).Inventor has found that the amount of tailings in vanadium extraction is unsuitable too high or too low, when tailings in vanadium extraction is matched somebody with somebody
Enter amount it is too low when, it is inadequate equivalent to the sodium oxide molybdena and the amount of potassium oxide matched somebody with somebody outside, can seriously reduce nickel recovery, and to final iron produce
Copper content diluting effect in product also unobvious；And when tailings in vanadium extraction amount of allocating is too high, the shaping of mixed material can be caused to be stranded
It is difficult.When the dosage of reducing agent is too low, the reduction reaction of nickel is carried out insufficient, and nickel recovery in lateritic nickel ore can be caused low；
And when reducing agent dosage is too high, excessive iron also can be reduced together into final products, cause nickel grade in ferro-nickel product to drop
It is low, so as to reduce the economic value of ferro-nickel product.And inventor is had been surprisingly found that by many experiments, by tailings in vanadium extraction, laterite
Nickel minerals, reducing agent and additives containing calcium are according to mass ratio (50~150)：100：(10~30)：, can when (5~20) are mixed
To give full play to the catalysis of sodium oxide molybdena and potassium oxide and fluxing action in tailings in vanadium extraction, and ensure gained ferro-nickel product have compared with
High market value.
According to another embodiment of the present utility model, the type of additives containing calcium is not particularly restricted, this area skill
Art personnel can be selected according to being actually needed, and according to a specific embodiment of the present utility model, additives containing calcium can be with
For selected from least one of calcium oxide, calcium carbonate and calcium hydroxide.Inventor has found, can enter one using such additives containing calcium
Catalytic reducer gasification is walked, promotes the reduction of nickel, improves the rate of recovery of nickel, and additive can be used as fluxing agent, and raising contains
The reactivity of nisiloy hydrochlorate, optimize the condition of the agglomeration of metal nickel-iron particle, be easy to the recovery of ferronickel particle, and favorably
In the removing of impurity, the quality of raising gained dilval product.
S200：Mixed material is supplied into shaped device and carries out forming processes
In the step, mixed material is supplied into shaped device and carries out forming processes, to obtain mixing pelletizing.Invention
People has found, by the way that said mixture material is carried out into forming processes, obtains the mixing pelletizing with certain mechanical strength, can significantly increase
Add the contact area of tailings in vanadium extraction and lateritic nickel ore, reducing agent and additive in mixed material so that the vanadium extraction in mixed material
Tailings fully contacts with lateritic nickel ore, reducing agent and additive, is advantageous to improve mixing pelletizing in sequential reduction calcination process mistake
Reduction efficiency in journey, reduce the energy consumption of reduction roasting device.It should be noted that shaped device is not particularly restricted, ability
Field technique personnel can be selected according to being actually needed, such as can be disc balling machine or two pairs of rollers ball press.Need to illustrate
, those skilled in the art can be selected the particle diameter of gained mixing pelletizing according to being actually needed.
S300：Mixing pelletizing is supplied into reduction roasting device and carries out reduction roasting processing
In the step, mixing pelletizing is supplied into reduction roasting device and carries out reduction roasting processing, to obtain metal
Pellet.Inventor has found, when mixing pelletizing progress reduction roasting processing, on the one hand, sodium oxide molybdena and oxygen in tailings in vanadium extraction
Changing potassium can be with the gasification of catalytic reducer, so as to promote the reduction of nickel；On the other hand, the sodium oxide molybdena and potassium oxide in tailings in vanadium extraction
Oxidation can be displaced from olivine as the fluxing agent in reduction roasting processing procedure, simultaneous oxidation sodium and potassium oxide
Nickel (Na2O+2NiO·SiO2=Na2O·SiO2+ 2NiO, K2O+2NiO·SiO2=K2O·SiO2+ 2NiO) so that nickel oxide has
There is higher activity, so as to reduce the temperature of reduction roasting processing, reduce the energy consumption of system, and can further promote metal
The reduction of nickel；Another further aspect, additives containing calcium catalytic reducer can further gasify, promote the reduction of nickel, improve the recovery of nickel
Rate, and additives containing calcium can be used as fluxing agent, improve the reactivity of nickeliferous silicate, and optimization metal nickel-iron particle gathers
Collect the condition grown up, be easy to the recovery of ferronickel particle, and be advantageous to the removing of impurity, improve follow-up gained dilval product
Quality, in addition inventor have been surprisingly found that the iron in tailings in vanadium extraction can be obviously promoted nickel in lateritic nickel ore by many experiments
Recovery, so as to further improve the quality of ferro-nickel product.It should be noted that reduction roasting device is not particularly restricted, this
Art personnel can be selected according to being actually needed, such as can be rotary hearth furnace.
According to one embodiment of the present utility model, the condition of reduction roasting processing is not particularly restricted, this area skill
Art personnel can be selected according to being actually needed, according to a specific embodiment of the present utility model, reduction roasting processing
Temperature can be 1300~1400 degrees Celsius, and the time can be 30~90min.Inventor has found, if the temperature of reduction roasting processing
Spend that the low or time is too short, then the reduction reaction of nickel is carried out insufficient, causes the rate of recovery of nickel low；And if reduction roasting is handled
Temperature is too high or overlong time, then not only waste energy, the recovery index of nickel can not be improved, it is also possible to make excessive iron reduction
Enter final products, reduce final products nickel grade.
S400：Metallized pellet is supplied into ore grinding-concentration equipment and carries out ore grinding and magnetic separation processing
In the step, metallized pellet is supplied into ore grinding-concentration equipment and carries out ore grinding and magnetic separation processing, to obtain
Low ferronickel powder and the first tailings.Inventor has found, by the way that metallized pellet is carried out into ore grinding processing, can wear into metallized pellet
Be easy to magnetic separation handle particulate matter, after magnetic separation, can by the nickel in particulate matter and it is ferromagnetic elect, leave the first tailings, in this way,
The recovery of ferronickel can tentatively be realized.Specifically, nickel mass fraction 2~4% in the low ferronickel powder of gained, weight of iron fraction 40~
60%.
S500：Low ferronickel powder is supplied molten office reason is carried out into molten separating device
In the step, low ferronickel powder is supplied molten office reason is carried out into molten separating device, to obtain dilval and the
Two tailings.Inventor has found that the low ferronickel powder as obtained by by ore grinding-magnetic separation carries out molten office reason, can be further by low ferronickel
Tailings in powder is removed, and obtains more high-grade dilval.Specifically, the content of nickel is not less than 5.1wt% in dilval,
The content of iron is not less than 90.3wt%, and the rate of recovery of nickel is not less than 90%.It should be noted that molten separating device is not limited especially
System, those skilled in the art can be selected according to being actually needed, such as can are that combustion gas is molten and be divided stove.
According to the processing tailings in vanadium extraction of the utility model embodiment and the system processing tailings in vanadium extraction and laterite of lateritic nickel ore
The method of nickel minerals, by tailings in vanadium extraction being mixed with lateritic nickel ore, reducing agent and additives containing calcium, being molded, reduction roasting,
Mill ore magnetic selection and molten office reason, on the one hand, sodium oxide molybdena and potassium oxide in tailings in vanadium extraction can with the gasification of catalytic reducer, so as to
Promote the reduction of nickel；On the other hand, the sodium oxide molybdena in tailings in vanadium extraction and potassium oxide can be as in reduction roasting processing procedures
Fluxing agent, simultaneous oxidation sodium and potassium oxide can displace nickel oxide (Na from olivine2O+2NiO·SiO2=Na2O·
SiO2+ 2NiO, K2O+2NiO·SiO2=K2O·SiO2+ 2NiO) so that nickel oxide has higher activity, so as to reduce reduction
The temperature of calcination process, the energy consumption of system is reduced, and can further promote the reduction of metallic nickel；Another further aspect, calcic add
Add agent further catalytic reducer can gasify, promote the reduction of nickel, improve the rate of recovery of nickel, and additives containing calcium can conduct
Fluxing agent, the reactivity of nickeliferous silicate is improved, optimize the condition of the agglomeration of metal nickel-iron particle, be easy to ferronickel particle
Recovery, and be advantageous to the removing of impurity, improve the quality of gained dilval product.Other inventor is anticipated by many experiments
Outer discovery, the iron in tailings in vanadium extraction can be obviously promoted the recovery of nickel in lateritic nickel ore, so as to further improve ferro-nickel product
Quality so that the content of nickel is not less than 5.1wt% in dilval, and the content of iron is not less than 90.3wt%, and the rate of recovery of nickel is not
Less than 90%.Thus, not only solve the problems, such as that lateritic nickel ore nickel recovery is low using this method, and fundamentally solve
Certainly tailings in vanadium extraction utilization rate is low and the problem stored up for a long time.
Below with reference to specific embodiment, the utility model is described, it is necessary to which explanation is, these embodiments are only
Descriptive, without limiting the utility model in any way.
Embodiment 1
By tailings in vanadium extraction and lateritic nickel ore, reduction coal and calcium oxide according to mass ratio 50：100：10：5 in strength batch mixing
Mixed, obtain mixed material, the total mass fraction of sodium oxide molybdena and potassium oxide is 6.5wt% wherein in tailings in vanadium extraction, laterite
The content of nickel is 1.8wt% in nickel minerals；Then this mixed material is delivered into disc balling machine and carries out forming processes, obtain mixing ball
Group；Then this being mixed into pelletizing and delivers to rotary hearth furnace progress reduction roasting processing, the temperature of reduction roasting processing is 1400 degrees Celsius,
Time is 30min, obtains metallized pellet；Then ore grinding-magnetic separation will be carried out after metallized pellet water quenching to handle, obtain low ferronickel
Powder and the first tailings, wherein the content of nickel is 4wt% in low ferronickel powder, the content of iron is 60wt%；Finally low ferronickel powder is sent
To combustion gas it is molten divide in stove carry out molten office reason, obtain dilval and the second tailings, the content of nickel is in dilval
8.7wt%, the content of iron are 90.3wt%, and the rate of recovery of nickel is up to 90%.
Embodiment 2
By tailings in vanadium extraction and lateritic nickel ore, reduction coal and calcium oxide according to mass ratio 100：100：20：10 in strength batch mixing
In mixed, obtain mixed material, the total mass fraction of sodium oxide molybdena and potassium oxide is 7.0wt% wherein in tailings in vanadium extraction, red
The content of nickel is 1.92wt% in native nickel minerals；Then this mixed material is delivered into two pairs of rollers ball press and carries out forming processes, mixed
Close pelletizing；Then this is mixed into pelletizing and delivers to rotary hearth furnace progress reduction roasting processing, the temperature of reduction roasting processing is taken the photograph for 1350
Family name's degree, time 60min, obtains metallized pellet；Then ore grinding-magnetic separation will be carried out after metallized pellet water quenching to handle, obtain
Low ferronickel powder and the first tailings, wherein the content of nickel is 3wt% in low ferronickel powder, the content of iron is 50wt%；Finally by low nickel
Iron powder deliver to combustion gas it is molten divide in stove carry out molten office reason, obtain dilval and the second tailings, the content of nickel is in dilval
7.7wt%, the content of iron are 91.5wt%, and the rate of recovery of nickel is up to 92%.
Embodiment 3
By tailings in vanadium extraction and lateritic nickel ore, reduction coal and calcium oxide according to mass ratio 150：100：30：20 in strength batch mixing
In mixed, obtain mixed material, the total mass fraction of sodium oxide molybdena and potassium oxide is 7.5wt% wherein in tailings in vanadium extraction, red
The content of nickel is 2.0wt% in native nickel minerals；Then this mixed material is delivered into two pairs of rollers ball press and carries out forming processes, mixed
Pelletizing；Then this is mixed into pelletizing and delivers to rotary hearth furnace progress reduction roasting processing, the temperature of reduction roasting processing is Celsius for 1300
Degree, time 90min, obtains metallized pellet；Then ore grinding-magnetic separation will be carried out after metallized pellet water quenching to handle, obtain low
Ferronickel powder and the first tailings, wherein the content of nickel is 2.2wt% in low ferronickel powder, the content of iron is 40wt%；Finally by low nickel
Iron powder deliver to combustion gas it is molten divide in stove carry out molten office reason, obtain dilval and the second tailings, the content of nickel is in dilval
5.1wt%, the content of iron are 93.8wt%, and the rate of recovery of nickel is up to 95%.
Embodiment 4
By tailings in vanadium extraction and lateritic nickel ore, reduction coal and calcium oxide according to mass ratio 125：100：25：15 in strength batch mixing
In mixed, obtain mixed material, the total mass fraction of sodium oxide molybdena and potassium oxide is 8.0wt% wherein in tailings in vanadium extraction, red
The content of nickel is 2.02wt% in native nickel minerals；Then this mixed material is delivered into two pairs of rollers ball press and carries out forming processes, mixed
Close pelletizing；Then this is mixed into pelletizing and delivers to rotary hearth furnace progress reduction roasting processing, the temperature of reduction roasting processing is taken the photograph for 1380
Family name's degree, time 70min, obtains metallized pellet；Then ore grinding-magnetic separation will be carried out after metallized pellet water quenching to handle, obtain
Low ferronickel powder and the first tailings, wherein the content of nickel is 3.2wt% in low ferronickel powder, the content of iron is 52.0wt%；Finally will
Low ferronickel powder deliver to combustion gas it is molten divide in stove carry out molten office reason, obtain dilval and the second tailings, nickel contains in dilval
Measure as 6.0wt%, the content of iron is 92.7wt%, and the rate of recovery of nickel is up to 96%.
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 the spy for combining the embodiment or example description
Point is contained at least one embodiment or example of the present utility model.In this manual, to the schematic table of above-mentioned term
State and be necessarily directed to identical embodiment or example.Moreover, specific features, structure, material or the feature of description can be with
Combined in an appropriate manner in any one or more embodiments or example.In addition, in the case of not conflicting, this area
Technical staff the different embodiments or example and the feature of different embodiments or example described in this specification can be entered
Row combines and combination.
Although embodiment of the present utility model has been shown and described above, it is to be understood that above-described embodiment is
Exemplary, it is impossible to it is interpreted as to limitation of the present utility model, one of ordinary skill in the art is in the scope of the utility model
It is interior above-described embodiment to be changed, changed, replaced and modification.
Claims (4)
- A kind of 1. system for handling tailings in vanadium extraction and lateritic nickel ore, it is characterised in that including：Mixing arrangement, the mixing arrangement have tailings in vanadium extraction entrance, lateritic nickel ore entrance, reducing agent entrance, additives containing calcium Entrance and mixed material outlet；Shaped device, the shaped device have mixed material entrance and the outlet of mixing pelletizing, the mixed material entrance and institute Mixed material outlet is stated to be connected；Reduction roasting device, the reduction roasting device have mixing pelletizing entrance and metallized pellet outlet, the mixing ball Group's entrance is connected with the mixing pelletizing outlet；Ore grinding-concentration equipment, the ore grinding-concentration equipment have metallized pellet entrance, the outlet of low ferronickel powder and the first tailings Outlet, the metallized pellet entrance are connected with metallized pellet outlet；Molten separating device, the molten separating device have low ferronickel powder entrance, dilval outlet and the outlet of the second tailings, the low nickel Iron powder entrance is connected with the low ferronickel powder outlet.
- 2. system according to claim 1, it is characterised in that the shaped device is disc balling machine or two pairs of rollers pressure ball Machine.
- 3. system according to claim 1 or 2, it is characterised in that the reduction roasting device is rotary hearth furnace.
- 4. system according to claim 3, it is characterised in that the molten packing, which is set to combustion gas and melted, divides stove.
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| CN106755989A (en) * | 2017-03-24 | 2017-05-31 | 江苏省冶金设计院有限公司 | The System and method for for the treatment of tailings in vanadium extraction and lateritic nickel ore |
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| CN106755989A (en) * | 2017-03-24 | 2017-05-31 | 江苏省冶金设计院有限公司 | The System and method for for the treatment of tailings in vanadium extraction and lateritic nickel ore |
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