CN108728659A - Nickel slag dilution method - Google Patents
Nickel slag dilution method Download PDFInfo
- Publication number
- CN108728659A CN108728659A CN201810638116.6A CN201810638116A CN108728659A CN 108728659 A CN108728659 A CN 108728659A CN 201810638116 A CN201810638116 A CN 201810638116A CN 108728659 A CN108728659 A CN 108728659A
- Authority
- CN
- China
- Prior art keywords
- nickel slag
- nickel
- dilution
- carbon dust
- slag
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- 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
- C22B7/00—Working up raw materials other than ores, e.g. scrap, to produce non-ferrous metals and compounds thereof; Methods of a general interest or applied to the winning of more than two metals
- C22B7/04—Working-up slag
-
- 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
- C22B7/00—Working up raw materials other than ores, e.g. scrap, to produce non-ferrous metals and compounds thereof; Methods of a general interest or applied to the winning of more than two metals
- C22B7/001—Dry processes
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
The present invention provides a kind of nickel slag dilution methods.The device that this method uses includes nickel slag dilution treatment furnace and Yarn feeding device, and using electric heating or plasma heat as heat source, nickel slag dilution treatment furnace is provided with the import of nickel slag, line feeding hole and puts sulfonium mouth nickel slag dilution treatment furnace；Nickel slag dilution method includes the following steps：Nickel slag is passed through in nickel slag dilution treatment furnace by the import of nickel slag；Carbon dust line is fed into nickel slag dilution treatment furnace by line feeding hole using Yarn feeding device；Under the action of electric heating or plasma heat, reduction dilution is carried out to nickel slag using carbon dust line and is handled.The technique can directly feed carbon dust line in the melt layer of the slag middle and lower part in furnace body, it can make melt contacts of the carbon dust more fully with slag middle and lower part in carbon dust line in this way, the function of playing reducing agent, to which the nickel oxide in nickel slag is reduced to nickel matte under higher dilution dynamic conditions.
Description
Technical field
The present invention relates to metal smelt technical fields, in particular to a kind of nickel slag dilution method.
Background technology
During the nickel fibers of the prior art, often smelts 1 ton of nickel and will produce 2~5 tons of nickel slag, the gold such as nickel, cobalt in nickel slag
It is higher to belong to content.Nickel content in the nickel slag of different smelting process outputs is different, the nickel content 0.8~4% of usual nickel slag, in addition
It is usually 0.3%~2% also to contain metals, the cobalt contents such as cobalt (Co), copper (Cu) in part of nickel slag, and copper content is usually 0.5%
~2%.
Currently, domestic nickel slag mainly uses pyrogenic process dilution technology, it is that yellow iron is added in high temperature furnace during pyrogenic process dilution
Mine is reacted with reducing agent lump coal.However, due to reducing agent lump coal since proportion is small, it is easy to float on slag top, can makes
It is burned heat release at most of reducing agent, the metal oxide of slag middle and lower part is difficult to touch the reducing agent for swimming in top,
Dilution dynamic conditions is poor, this directly results in the lengthening in nickel slag dilution period, generally requires 3~7h, has seriously affected production
Efficiency.
Invention content
The main purpose of the present invention is to provide a kind of nickel slag dilution methods, to solve to utilize pyrogenic process dilution in the prior art
When technical finesse nickel slag the problem of existing low production efficiency.
To achieve the goals above, according to an aspect of the invention, there is provided a kind of nickel slag dilution method, uses
Device includes nickel slag dilution treatment furnace and Yarn feeding device, and for nickel slag dilution treatment furnace using electric heating or plasma heat as heat source, nickel slag is poor
Change treatment furnace to be provided with the import of nickel slag, line feeding hole and put sulfonium mouth；Nickel slag dilution method includes the following steps：It will by nickel slag import
Nickel slag is passed through in nickel slag dilution treatment furnace；Carbon dust line is fed into nickel slag dilution treatment furnace by line feeding hole using Yarn feeding device；
Under the action of electric heating or plasma heat, reduction dilution is carried out to nickel slag using carbon dust line and is handled.
Further, nickel slag dilution treatment furnace is ore-smelting electric furnace or plasma heating furnace.
Further, in the step of restoring dilution processing, while additive participation is passed through into nickel slag dilution treatment furnace
Restore dilution processing；Preferably, additive is one or more in pyrite, sulphur and low nickel matte.
Further, nickel content is 0.8~4wt% in nickel slag, and cobalt content is 0.3~2%, and copper content is 0.5~2%；
Preferably, the addition of additive is the 1~20% of nickel slag weight；Preferably, the carbon dust weight in the carbon dust line of addition is remembered
For A, nickel oxide, cobalt/cobalt oxide and Cu oxide in nickel slag are reduced required theory and are denoted as B, wherein A/B with carbon weight
=0.8~2.0.
Further, a diameter of 10~30mm of carbon dust line, the carbon powder content in carbon dust line are 50~98%.
Further, carbon dust line includes carbon dust sandwich layer and is coated on the metal sheath of carbon dust core layer surface, and metal sheath is
Iron sheet or aluminium skin, the preferably thickness of metal sheath are 0.1~0.5mm.
Further, in the step of feeding carbon dust line, the line end of carbon dust line is placed in nickel slag dilution treatment furnace
In melt layer, and the interior bottom wall of nickel slag dilution treatment furnace is denoted as H away from slag layer height, by the inside of nickel slag dilution treatment furnace
Line end height of the bottom wall away from carbon dust line is denoted as h, wherein h/H=1/3~1/2.
Further, the temperature of reduction dilution processing is 1200~1400 DEG C, and the time is 1~3h.
Further, nickel matte, clinker and tail gas have been obtained in the step of reduction dilution processing, nickel slag dilution method further includes
The step of Water Quenching is carried out to clinker.
Further, nickel slag dilution method further includes the steps that being post-processed to tail gas, and post-processing step includes：To tail
Gas carries out waste heat recovery processing, obtains cold flue gas；And processing of gathering dust is carried out to cold flue gas.
The present invention provides a kind of nickel slag dilution method, the device used includes nickel slag dilution treatment furnace and line feeding dress
Set, nickel slag dilution treatment furnace using electric heating or plasma heat as heat source, nickel slag dilution treatment furnace be provided with the import of nickel slag, line feeding hole and
Put sulfonium mouth；Nickel slag dilution method includes the following steps：Nickel slag is passed through in nickel slag dilution treatment furnace by the import of nickel slag；Using feed
Line apparatus feeds carbon dust line into nickel slag dilution treatment furnace by line feeding hole；Under the action of electric heating or plasma heat, carbon is utilized
Chalk line carries out reduction dilution processing to nickel slag.
Using method provided by the invention, carbon dust line is fed in nickel slag dilution treatment furnace using wire injection procedure, then with
Electric heating or plasma heat are that heat source carries out reduction dilution processing to nickel slag.Compared to traditional pyrogenic process dilution technique, the present invention passes through
Yarn feeding device can directly feed carbon dust line in the melt layer of the slag middle and lower part in furnace body.It can make in carbon dust line in this way
Melt contacts of the carbon dust more fully with slag middle and lower part, play the function of reducing agent, in higher dilution dynamics item
The nickel oxide in nickel slag is reduced to nickel matte under part, and (wherein a small amount of cobalt/cobalt oxide, Cu oxide can be also reduced to accordingly
Metal sulfonium).Based on the above reason, the reduction dilution of nickel slag can be effectively improved using nickel slag dilution device provided by the invention
Efficiency.
Description of the drawings
The accompanying drawings which form a part of this application are used to provide further understanding of the present invention, and of the invention shows
Meaning property embodiment and its explanation are not constituted improper limitations of the present invention for explaining the present invention.In the accompanying drawings：
Fig. 1 shows the schematic diagram according to the nickel slag dilution device used in an embodiment of the present invention.
Wherein, above-mentioned attached drawing includes the following drawings label：
10, nickel slag dilution treatment furnace；11, furnace body；12, electrode is heated；20, Yarn feeding device；30, waste-heat recovery device；40,
Dust arrester installation；50, additive storage bin；
A, nickel slag；B, carbon dust line；C, nickel matte；D, clinker；E, tail gas.
Specific implementation mode
It should be noted that in the absence of conflict, the features in the embodiments and the embodiments of the present application can phase
Mutually combination.The present invention will be described in detail below with reference to the accompanying drawings and embodiments.
The application is described in further detail below in conjunction with specific embodiment, these embodiments should not be understood as limitation originally
Apply for range claimed.
As described in background technology part, there is production when utilizing pyrogenic process dilution technical finesse nickel slag in the prior art
The low problem of efficiency.
To solve the above-mentioned problems, the present invention provides a kind of nickel slag dilution methods, as shown in Figure 1, its device for using
Including nickel slag dilution treatment furnace 10 and Yarn feeding device 20, nickel slag dilution treatment furnace 10 is using electric heating or plasma heat as heat source, nickel slag
Dilution treatment furnace 10 is provided with the import of nickel slag, line feeding hole and puts sulfonium mouth；Nickel slag dilution method includes the following steps：By nickel slag into
Nickel slag a is passed through in nickel slag dilution treatment furnace 10 by mouth；Using Yarn feeding device 20 by line feeding hole into nickel slag dilution treatment furnace 10
Feed carbon dust line b；Under the action of electric heating or plasma heat, reduction dilution is carried out to nickel slag a using carbon dust line b and is handled.
Using nickel slag dilution method provided by the invention, carbon dust line is fed by nickel slag dilution treatment furnace using wire injection procedure
In, reduction dilution processing is then carried out to nickel slag as heat source using electric heating or plasma heat.Compared to traditional pyrogenic process dilution technique, originally
Carbon dust line can directly be fed the molten of the slag middle and lower part in 10 furnace body of nickel slag dilution treatment furnace by Yarn feeding device 20 by invention
In body layer.It can make melt contacts of the carbon dust more fully with slag middle and lower part in carbon dust line in this way, play the work(of reducing agent
Can, to which the nickel oxide in nickel slag is reduced to nickel matte c (wherein a small amount of cobalt oxidations under higher dilution dynamic conditions
Object, Cu oxide can also be reduced to corresponding metal sulfonium).Based on the above reason, nickel slag provided by the invention dilution side is utilized
Method can effectively improve the reduction dilution efficiency of nickel slag, be embodied in：It can effectively shorten dilution period of nickel slag, and be applicable in
Nickel slag range it is wide, metal recovery rate is high, and the tenors such as nickel, cobalt, copper in clinker are low.
In a preferred embodiment, nickel slag dilution treatment furnace 10 is ore-smelting electric furnace or plasma heating furnace.Utilize mine heat
Electric furnace or plasma heating furnace can provide stable heat for the dilution process of nickel slag, and the carbon dust line being added substantially can be complete
Reducing agent is served as, dilution dynamic conditions can be further improved, improves production efficiency.
In a preferred embodiment, in the step of restoring dilution processing, while to nickel slag dilution treatment furnace 10
In be passed through additive participate in reduction dilution processing；Preferably, additive is one kind or more in pyrite, sulphur and low nickel matte
Kind.These additives are added and advantageously reduce nickel matte grade in clinker, further increase the rate of recovery of nickel.
Nickel slag dilution processing is carried out based on special wire injection procedure so that the nickel slag range that technique provided by the invention uses
Wider, in a preferred embodiment, nickel content is 0.8~4wt% in nickel slag, and cobalt content is 0.3~2%, copper content
It is 0.5~2%.
In order to further increase nickel slag dilution efficiency and nickel (other metals such as a small amount of cobalt, copper) the rate of recovery, in one kind
In preferred embodiment, the addition of additive is the 1~20% of nickel slag weight.It is highly preferred that by the carbon dust line of addition
Carbon dust weight be denoted as A, by nickel oxide, cobalt/cobalt oxide and Cu oxide in nickel slag be reduced required theory with carbon weight remember
For B, wherein A/B=0.8~2.0." nickel oxide, cobalt/cobalt oxide and Cu oxide are reduced required theory in nickel slag herein
With carbon weight " refer to the theoretical carbon amounts being reduced to these oxides needed for metal simple-substance.
The carbon dust line used in the above-mentioned dilution method of the present invention can be presently commercially available carbon dust line, in a kind of preferred reality
It applies in mode, a diameter of 10~30mm of carbon dust line, the carbon powder content in carbon dust line is 50~98%.It is highly preferred that carbon dust line
Including carbon dust sandwich layer and the metal sheath for being coated on carbon dust core layer surface, metal sheath is iron sheet or aluminium skin, preferably metal sheath
Thickness be 0.1~0.5mm.Metal sheath in the melt for entering furnace body 11 after can occur high temperature melting, or with other metals
It is dissolved in slag after oxide reaction oxidation.
In a preferred embodiment, in the step of feeding carbon dust line, the line end of carbon dust line is placed at nickel slag
In melt layer in dilution treatment furnace 10, and the interior bottom wall of nickel slag dilution treatment furnace 10 is denoted as H away from slag layer height, by nickel
Line end height of the interior bottom wall of slag dilution treatment furnace 10 away from carbon dust line is denoted as h, wherein h/H=1/3~1/2.In this way, on the one hand
Contact of the carbon dust line with melt is more abundant, and more preferably, the metal oxide in the middle part of another aspect molten bath completes reduction to dilution condition
After reaction, molten bath bottom can be entered by settlement action, relatively stable nickel matte layer is formed, facilitates discharge nickel matte.
As it was noted above, the nickel slag dilution technique based on the present invention has preferable dynamic conditions, can effectively shorten
The dilution period.In a preferred embodiment, the temperature of reduction dilution processing is 1200~1400 DEG C, and the time is 1~3h.
In a preferred embodiment, nickel matte c, clinker d and tail gas c have been obtained in the step of reduction dilution processing,
Nickel slag dilution method further includes the steps that carrying out Water Quenching to clinker.
In a preferred embodiment, nickel slag dilution method further includes the steps that being post-processed to tail gas, rear to locate
Managing step includes：Waste heat recovery processing is carried out to tail gas, obtains cold flue gas；Processing of gathering dust is carried out to cold flue gas.So on the one hand
The waste heat that can be recycled in tail gas is used, and on the one hand can also reduce granular material discharged, improves the feature of environmental protection of device.
It should be noted that in actual dilution processing procedure, reducing agent can form CO or CO after participating in dilution2, tail
A part of combustible can be carried in gas secretly, this part combustible be located above slag also can generating unit divided combustion, carried for furnace body 11
Heating load.
According to another aspect of the present invention, a kind of nickel slag dilution device is additionally provided, as shown in Figure 1 comprising nickel slag is poor
Change treatment furnace 10 and Yarn feeding device 20, nickel slag dilution treatment furnace 10 is using electric heating or plasma heat as heat source, nickel slag dilution treatment furnace
10 are provided with the import of nickel slag, line feeding hole and put sulfonium mouth, and the import of nickel slag puts sulfonium mouth dilution processing is discharged to be passed through nickel slag a
Obtained nickel matte c；Yarn feeding device 20 be used for by line feeding hole fed into nickel slag dilution treatment furnace 10 carbon dust line b with to nickel slag into
Row reduction dilution processing.
It, can be by the liquid nickel slag of nickel fibers stove output through chute or cinder ladle using nickel slag dilution device provided by the invention
Be transported in nickel slag dilution treatment furnace 10, then use wire injection procedure by carbon dust line feed nickel slag dilution treatment furnace in, then with
Electric heating or plasma heat are that heat source carries out reduction dilution processing to nickel slag.Compared to traditional pyrogenic process dilution technique, the present invention passes through
Yarn feeding device 20 can directly feed carbon dust line in the melt layer of the slag middle and lower part in 10 furnace body of nickel slag dilution treatment furnace.This
Sample can make melt contacts of the carbon dust more fully with slag middle and lower part in carbon dust line, play the function of reducing agent, thus
The nickel oxide in nickel slag is reduced to nickel matte under higher dilution dynamic conditions, and (wherein a small amount of cobalt/cobalt oxide, copper aoxidize
Object can also be reduced to corresponding metal sulfonium).It, can be effective using nickel slag dilution device provided by the invention based on the above reason
The reduction dilution efficiency for improving nickel slag, is embodied in：It can effectively shorten dilution period of nickel slag, and applicable nickel slag range
Extensively, metal recovery rate is high, and the tenors such as nickel, cobalt, copper in clinker are low.
During practical dilution, the admission velocity of carbon dust line is controlled by Yarn feeding device 20, carbon dust (lacks after entering melt with nickel
Measure cobalt, copper) oxide reaction, generate CO, CO2Gas will be reduced into metal simple-substance state with metal existing for oxidation state,
The sedimentation of other metals such as nickel is simultaneously discharged by putting sulfonium mouth.During gas is escaped by melt, additionally it is possible to play the stirring to melt and make
With can also promote metallic particles agglomeration in this way and settle, to promote the progress of reduction reaction.
In a preferred embodiment, nickel slag dilution treatment furnace 10 is ore-smelting electric furnace or plasma heating furnace.Utilize mine heat
Electric furnace or plasma heating furnace can provide stable heat for the dilution process of nickel slag, and the carbon dust line being added substantially can be complete
Reducing agent is served as, dilution dynamic conditions can be further improved, improves production efficiency.
For the purpose for saving production cost and equipment cost, in a preferred embodiment, as shown in Figure 1, nickel
Slag dilution treatment furnace 10 includes furnace body 11 and heating electrode 12, and the import of nickel slag and line feeding hole are arranged at the top of furnace body 11, put sulfonium
The side-lower in furnace body 11 is arranged in mouth, and is additionally provided with electrode hole on furnace body 11；Heating electrode 12 extends to stove across electrode hole
The content of body 11, to 11 heat supply of furnace body.In actual mechanical process, powered to heating electrode 12 by power supply, Jin Erli
With heating electrode 12 heat supply is carried out for the nickel slag system inside furnace body 11.The number of above-mentioned heating electrode 12 can be according to furnace body 11
Capacity, nickel Slag treatment amount are adjusted, this is that those skilled in the art should be understood that.
In order to more easily carry out line feeding operation, and the height of line feeding is more easily controlled, in a kind of preferred embodiment party
In formula, line feeding hole is multiple, and multiple line feeding pore size distributions are at the top of furnace body 11.By line feeding pore size distribution at the top of furnace body 11, lead to
Yarn feeding device 20 is crossed by behind carbon dust line feeding line feeding hole, carbon dust line can enter under the gravity of itself inside melt to be connect with melt
It touches, and control line end height should be facilitated in the process.In addition, multiple line feeding holes are arranged, carbon dust line can be fed in different positions,
Be conducive to further increase the efficiency of dilution reduction.Preferably, line feeding hole is 3~8, and the aperture in line feeding hole is 30~100mm.
In a preferred embodiment, furnace body 11 relative to the side lower part for putting sulfonium mouth is additionally provided with slag tap,
Slag tap restores the clinker d of output in dilution processing procedure to be discharged.As shown in Figure 1, in actual production process, furnace body
In dilution system in 11, underlying is nickel matte (comprising other a small amount of metal sulfoniums), and superposed is to float on melt
Some slags on surface.Therefore, these slags can be discharged using slag tap.Preferably, nickel slag dilution device further includes slag
Cooling device, slag cooler cool down to the clinker d that slag tap is discharged.Ability may be used in the specific type of cooling
Domain common methods for cooling, such as water quenching etc..
In order to further increase the dilution effect of nickel slag, in a preferred embodiment, the top of furnace body 11 is also set
It is equipped with additive entrance, additive entrance is being passed through additive.The additive can be vulcanizing agent, trapping agent etc., be conducive to
The nickel matte grade in clinker is reduced, the rate of recovery of nickel is further increased.
In a preferred embodiment, additive entrance and nickel slag import are co-located.It in this way can be same
Additive and nickel slag is added in one position, improves operation ease.Preferably, nickel slag dilution device further includes additive storage bin 50,
Additive storage bin 50 is connected with additive entrance, to provide additive.
In a preferred embodiment, nickel slag dilution treatment furnace 10 is additionally provided with offgas outlet, nickel slag dilution device
Further include waste-heat recovery device 30 and dust arrester installation 40, waste-heat recovery device 30 is provided with heat smoke import and cold flue gas outlet,
Heat smoke import is connected with offgas outlet；Dust arrester installation 40 is connected with cold flue gas outlet.It on the one hand can recycle in tail gas e in this way
Waste heat be used, on the one hand can also reduce granular material discharged, improve the feature of environmental protection of device.
The advantageous effect further illustrated the present invention by the following examples：
Embodiment 1
The dilution of nickel slag is carried out using the dilution device of nickel slag shown in Fig. 1, wherein nickel slag dilution treatment furnace is as shown in Figure 1, stove
Body is internally provided with three heating electrodes, and the volume for the part that electrode extends in cavity accounts for the 4% of cavity total measurement (volume), electrode
Power density is 200kW/m2, process conditions are as follows：
Nickel slag is added in stove, promotes the temperature of slag in stove to 1350 DEG C；Start carbon dust line carrying out line feeding (above furnace body
It is provided with 5 line feeding holes), carbon dust line includes carbon dust sandwich layer and is coated on the iron sheet of carbon dust core layer surface, and thickness of scale is
0.1mm, a diameter of 10mm of carbon dust line, carbon powder content 98%；Carbon dust weight in the carbon dust line of addition is denoted as A, by nickel
Nickel oxide, cobalt/cobalt oxide and Cu oxide are reduced required theory and are denoted as B, wherein A/B=0.8 with carbon weight in slag.Hello
In line process, the line end of carbon dust line is placed in the melt layer in nickel slag dilution treatment furnace, and by nickel slag dilution treatment furnace
Interior bottom wall is denoted as H away from slag layer height, and line end height of the interior bottom wall of nickel slag dilution treatment furnace away from carbon dust line is denoted as h,
Wherein h/H=1/3；Pyrite is added in furnace body and further traps the nickel metal in slag, addition is smelting slag total weight
3%；Gained nickel matte Returning smelting stove.
Handling result：Handle 200,000 tons of nickel slag, nickel slag nickeliferous 1.2% year, cupric 0.95% contains cobalt 0.76%；At nickel slag
Clinker nickeliferous 0.10% after reason, cupric 0.23% contain cobalt 0.09%；The nickel grade of nickel matte is 23.05%.Whole system nickel recycles
Rate about 95.4%, the cobalt rate of recovery is about 91.5%, copper recovery 73.8%.
Embodiment 2
The device and technique of use with embodiment 1, the difference is that：H/H=1/2.
Handling result：Handle 190,000 tons of nickel slag, nickel slag nickeliferous 1.2% year, cupric 0.95% contains cobalt 0.76%；At nickel slag
Clinker nickeliferous 0.15% after reason, cupric 0.28% contain cobalt 0.12%；The nickel grade of nickel matte is 22.3%.Whole system nickel recycles
Rate about 93.8%, the cobalt rate of recovery is about 90.1%, copper recovery 70.2%.
Embodiment 3
The device and technique of use with embodiment 1, the difference is that：H/H=2/3.
Handling result：Handle 170,000 tons of nickel slag, nickel slag nickeliferous 1.2% year, cupric 0.95% contains cobalt 0.76%；At nickel slag
Clinker nickeliferous 0.23% after reason, cupric 0.31% contain cobalt 0.15%；The nickel grade of nickel matte is 21.7%.Whole system nickel recycles
Rate about 91.7%, the cobalt rate of recovery is about 90.0%, copper recovery 70.3%.
Embodiment 4
The device and technique of use with embodiment 1, the difference is that：The addition of pyrite is nickel slag total weight
5%, A/B=2.0.
Handling result：Handle 230,000 tons of nickel slag, nickel slag nickeliferous 1.0% year, cupric 0.82% contains cobalt 0.69%；At nickel slag
Clinker nickeliferous 0.08% after reason, cupric 0.20% contain cobalt 0.07%；The nickel grade of nickel matte is 24.62%.Whole system nickel recycles
Rate about 96.7%, the cobalt rate of recovery is about 92.8%, copper recovery 76.4%.
Embodiment 5
The device and technique of use with embodiment 1, the difference is that：The addition of pyrite is nickel slag total weight
1%, A/B=0.7.
Handling result：Handle 180,000 tons of nickel slag, nickel slag nickeliferous 1.2% year, cupric 0.95% contains cobalt 0.76%；At nickel slag
Clinker nickeliferous 0.13% after reason, cupric 0.29% contain cobalt 0.14%；The nickel grade of nickel matte is 21.00%.Whole system nickel recycles
Rate about 93.0%, the cobalt rate of recovery is about 89.4%, copper recovery 70.8%.
Comparative example 1
The device and technique of use with embodiment 1, the difference is that：Do not use wire injection procedure, but by the carbon of equivalent
Powder is directly added in by charging aperture in furnace body.
Handling result：Handle 120,000 tons of nickel slag, nickel slag nickeliferous 1.2% year, cupric 0.95% contains cobalt 0.76%；At nickel slag
Clinker nickeliferous 0.25% after reason, cupric 0.59% contain cobalt 0.45%；The nickel grade of nickel matte is 16.00%.Whole system nickel recycles
Rate about 81.5%, the cobalt rate of recovery is about 84.2%, copper recovery 60.3%.
It can be seen from the above description that the above embodiments of the present invention realize following technique effect：
Using nickel slag dilution device provided by the invention, carbon dust line is fed by nickel slag dilution treatment furnace using wire injection procedure
In, reduction dilution processing is then carried out to nickel slag as heat source using electric heating or plasma heat.Compared to traditional pyrogenic process dilution technique, originally
Invention can directly be fed carbon dust line in the melt layer of the slag middle and lower part in furnace body by Yarn feeding device.It can make carbon in this way
Melt contacts of the carbon dust more fully with slag middle and lower part in chalk line, play the function of reducing agent, in higher dilution
The nickel oxide in nickel slag is reduced to nickel matte under dynamic conditions, and (wherein a small amount of cobalt/cobalt oxide, Cu oxide can also be gone back
Originally it was corresponding metal sulfonium).Based on the above reason, nickel slag can be effectively improved using nickel slag dilution device provided by the invention
Restore dilution efficiency.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, any made by repair
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of nickel slag dilution method, which is characterized in that the device that the nickel slag dilution method uses includes nickel slag dilution processing
Stove (10) and Yarn feeding device (20), for the nickel slag dilution treatment furnace (10) using electric heating or plasma heat as heat source, the nickel slag is poor
Change treatment furnace (10) to be provided with the import of nickel slag, line feeding hole and put sulfonium mouth；The nickel slag dilution method includes the following steps：
The nickel slag is passed through in the nickel slag dilution treatment furnace (10) by the nickel slag import；
Carbon dust line is fed into the nickel slag dilution treatment furnace (10) by the line feeding hole using the Yarn feeding device (20)；
Under the action of the electric heating or the plasma heat, the nickel slag is carried out at reduction dilution using the carbon dust line
Reason.
2. nickel slag dilution method according to claim 1, which is characterized in that the nickel slag dilution treatment furnace (10) is mine heat
Electric furnace or plasma heating furnace.
3. nickel slag dilution method according to claim 1 or 2, which is characterized in that in the step of reduction dilution is handled
In, while being passed through additive into the nickel slag dilution treatment furnace (10) and participating in the reduction dilution processing；Preferably, described to add
It is one or more in pyrite, sulphur and low nickel matte to add agent.
4. nickel slag dilution method according to claim 3, which is characterized in that in the nickel slag nickel content be 0.8~
4wt%, cobalt content are 0.3~2%, and copper content is 0.5~2%；
Preferably, the addition of the additive is the 1~20% of the nickel slag weight；
Preferably, the carbon dust weight in the carbon dust line of addition is denoted as A, by nickel oxide, cobalt/cobalt oxide in the nickel slag
And Cu oxide is reduced required theory and is denoted as B, wherein A/B=0.8~2.0 with carbon weight.
5. nickel slag dilution method according to any one of claim 1 to 4, which is characterized in that the diameter of the carbon dust line
For 10~30mm, the carbon powder content in the carbon dust line is 50~98%.
6. nickel slag dilution method according to claim 5, which is characterized in that the carbon dust line includes carbon dust sandwich layer and cladding
In the metal sheath of the carbon dust core layer surface, the metal sheath is iron sheet or aluminium skin, the thickness of the preferably described metal sheath
For 0.1~0.5mm.
7. nickel slag dilution method according to any one of claim 1 to 6, which is characterized in that feeding the carbon dust line
The step of in, the line end of the carbon dust line is placed in the melt layer in the nickel slag dilution treatment furnace (10), and will be described
The interior bottom wall of nickel slag dilution treatment furnace (10) is denoted as H away from the slag layer height, by the nickel slag dilution treatment furnace (10)
Line end height of the interior bottom wall away from the carbon dust line is denoted as h, wherein h/H=1/3~1/2.
8. nickel slag dilution method according to claim 7, which is characterized in that the temperature of the reduction dilution processing is 1200
~1400 DEG C, the time is 1~3h.
9. nickel slag dilution method according to any one of claim 1 to 7, which is characterized in that the reduction dilution processing
The step of in obtained nickel matte, clinker and tail gas, the nickel slag dilution method further includes carrying out Water Quenching to the clinker
Step.
10. nickel slag dilution method according to claim 9, which is characterized in that the nickel slag dilution method further includes to institute
The step of tail gas is post-processed is stated, the post-processing step includes：
Waste heat recovery processing is carried out to the tail gas, obtains cold flue gas；And
Processing of gathering dust is carried out to the cold flue gas.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810638116.6A CN108728659B (en) | 2018-06-20 | 2018-06-20 | Method for depleting nickel slag |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810638116.6A CN108728659B (en) | 2018-06-20 | 2018-06-20 | Method for depleting nickel slag |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108728659A true CN108728659A (en) | 2018-11-02 |
| CN108728659B CN108728659B (en) | 2020-08-11 |
Family
ID=63930430
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810638116.6A Active CN108728659B (en) | 2018-06-20 | 2018-06-20 | Method for depleting nickel slag |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108728659B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1348999A (en) * | 2000-10-12 | 2002-05-15 | 中国科学院金属研究所 | Copper-nickel slag treating method |
| CN101914655A (en) * | 2010-08-03 | 2010-12-15 | 沈阳午飞炉料有限公司 | Method for manufacturing solid cored-wires made of high purity calcium metal |
| CN104404259A (en) * | 2014-11-16 | 2015-03-11 | 中南大学 | Method for recovering valuable metals by cooperatively disposing copper-nickel-cobalt smelting slag and gypsum slag |
| CN106048254A (en) * | 2016-07-21 | 2016-10-26 | 黄艳玲 | Continuous smelting device and method of nickel-containing material |
| CN107663589A (en) * | 2017-10-10 | 2018-02-06 | 东北大学 | A kind of method by the nickeliferous mixing slag recovery valuable component with iron |
| CN107699703A (en) * | 2017-10-10 | 2018-02-16 | 东北大学 | A kind of method produced by nickel fibers slag |
| CN107699700A (en) * | 2017-10-10 | 2018-02-16 | 东北大学 | A kind of method that valuable component is reclaimed by slag containing nickel fibers |
-
2018
- 2018-06-20 CN CN201810638116.6A patent/CN108728659B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1348999A (en) * | 2000-10-12 | 2002-05-15 | 中国科学院金属研究所 | Copper-nickel slag treating method |
| CN101914655A (en) * | 2010-08-03 | 2010-12-15 | 沈阳午飞炉料有限公司 | Method for manufacturing solid cored-wires made of high purity calcium metal |
| CN104404259A (en) * | 2014-11-16 | 2015-03-11 | 中南大学 | Method for recovering valuable metals by cooperatively disposing copper-nickel-cobalt smelting slag and gypsum slag |
| CN106048254A (en) * | 2016-07-21 | 2016-10-26 | 黄艳玲 | Continuous smelting device and method of nickel-containing material |
| CN107663589A (en) * | 2017-10-10 | 2018-02-06 | 东北大学 | A kind of method by the nickeliferous mixing slag recovery valuable component with iron |
| CN107699703A (en) * | 2017-10-10 | 2018-02-16 | 东北大学 | A kind of method produced by nickel fibers slag |
| CN107699700A (en) * | 2017-10-10 | 2018-02-16 | 东北大学 | A kind of method that valuable component is reclaimed by slag containing nickel fibers |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108728659B (en) | 2020-08-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108728660A (en) | Copper ashes dilution method | |
| CN109880955B (en) | Smelting method and smelting device for treating iron-based multi-metal ore material in short process | |
| CN102051428B (en) | Iron extracting and steelmaking process for comprehensively treating copper ore tailing and nickel molten slag | |
| CN101921919B (en) | Comprehensive utilization process of molten copper slag and system thereof | |
| CN205170399U (en) | Carbide smelting furnace and system are closed to oxygen electricity federation | |
| CN106048254A (en) | Continuous smelting device and method of nickel-containing material | |
| CN111349743B (en) | Energy-saving and emission-reducing method for recycling thermal-state casting residues | |
| CN107858502A (en) | Vanadium titano-magnetite processing method | |
| CN106119543B (en) | Metallurgical electric furnace and method of smelting | |
| CN103993115A (en) | Drying and reducing integrated flash ironmaking apparatus and ironmaking method | |
| CN106011357B (en) | Hydrogen plasma method for melting reduction iron making and system | |
| CN109880956A (en) | Short route handles the smelting system of iron-based polymetallic ore material | |
| CN201351168Y (en) | Iron-contained material continuous steelmaking device | |
| Harvey et al. | Greener reactants, renewable energies and environmental impact mitigation strategies in pyrometallurgical processes: A review | |
| CN106996695A (en) | A kind of metallurgical furnace | |
| CN112391507B (en) | Improved flash smelting reduction iron-making device and method | |
| CN104152714A (en) | Method for smelting nickel-copper from sulfide ores by virtue of pyrogenic process and extracting iron | |
| CN108531744A (en) | Copper ashes dilution device | |
| CN108441650A (en) | Nickel slag dilution device | |
| CN103468955A (en) | New scrap copper smelting technology | |
| CN103333979A (en) | Smelting reduction electric ironmaking system using electricity-coal method, and technological process thereof | |
| CN205710868U (en) | A kind of sky dodges stove | |
| CN111394588A (en) | Method and device for directly producing iron-vanadium-chromium alloy by treating vanadium extraction tailings | |
| CN108728659A (en) | Nickel slag dilution method | |
| Lötter et al. | Pig Iron Production (post Blast Furnace era) |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |