CN106834723A - The system and method for processing metallurgical slag - Google Patents
The system and method for processing metallurgical slag Download PDFInfo
- Publication number
- CN106834723A CN106834723A CN201710186513.XA CN201710186513A CN106834723A CN 106834723 A CN106834723 A CN 106834723A CN 201710186513 A CN201710186513 A CN 201710186513A CN 106834723 A CN106834723 A CN 106834723A
- Authority
- CN
- China
- Prior art keywords
- ammonia
- cupric
- iron powder
- entrance
- copper
- 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.)
- Pending
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
- C22B1/00—Preliminary treatment of ores or scrap
- C22B1/005—Preliminary treatment of scrap
-
- 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
- C22B15/00—Obtaining copper
- C22B15/0063—Hydrometallurgy
- C22B15/0065—Leaching or slurrying
- C22B15/0078—Leaching or slurrying with ammoniacal solutions, e.g. ammonium hydroxide
-
- 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
-
- 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
- C22B7/006—Wet processes
- C22B7/008—Wet processes by an alkaline or ammoniacal leaching
-
- 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)
- Metallurgy (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Organic Chemistry (AREA)
- Geology (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention discloses a kind of system and method for processing metallurgical slag, the metallurgical slag includes at least one in copper ashes and nickel slag, and the system includes：Mixing arrangement, with the outlet of metallurgical slag entrance, reducing agent entrance, additive entrance and mixed material；Reduction mill ore magnetic selection device, with mixed material entrance, the outlet of cupric iron powder and tailings outlet；Fine grinding device, with cupric iron powder entrance and the thin iron powder outlet of cupric；Ammonia bath unit, with the thin iron powder entrance of cupric, ammonia inlet, carbon dioxide entrance, iron powder outlet and the outlet of cupric ammonia leaching solution；Ammonia steaming device, with the outlet of cupric ammonia leaching solution entrance, air intake, carbon dioxide outlet, ammonia outlet and cupric oxide.The system obtains cupric iron powder by the way that the mixed material containing metallurgical slag and reducing agent is reduced directly into mill ore magnetic selection, cupric iron powder is soaked into the copper realized, iron by ammonia again to separate, so that the rate of recovery of copper is not less than 98.5%, the content of TFe is not less than 91.5wt% in iron powder, and the content of Cu is not more than 0.05wt%.
Description
Technical field
The invention belongs to field of hydrometallurgy, specifically, the system and method the present invention relates to process metallurgical slag.
Background technology
Copper ashes and nickel slag are the slags of generation during copper metallurgy and nickel metallurgy, and 2.2 tons of copper can be produced while smelting 1 ton of refined copper
Slag, China's copper slag yield is big, produces 1500000 tons or so per year.1 ton of nickel is produced using Flash Smelting Furnace smelting process and about discharges 6~16 tons
Nickel slag, only Jinchuan Group will discharge nearly 800,000 tons of nickel slags every year, utilize about 100,000 tons in year, and remaining is deposited in the slag of company,
Accumulative volume of cargo in storage is up to 10,000,000 tons.The bulk deposition of copper ashes and nickel slag can bring serious water pollution and soil pollution, because
And the comprehensive utilization of strengthening copper ashes and nickel slag is extremely important.The composition of copper ashes and nickel slag is approached, and main component is ferriferous oxide
And silica, main thing is mutually fayalite and a small amount of magnetic iron ore.The research on utilization to copper ashes and nickel slag mainly collects at present
In valuable metal copper, cobalt, zinc, iron in copper ashes is extracted, the method for use has the skills such as beneficiating method, pyrometallurgical smelting, hydrometallurgy
Art means, wherein, direct-reduction is the pyrometallurgical smelting method of most promising treatment copper ashes and nickel slag at present.
Cupric iron powder is the iron-containing product that copper ashes or nickel slag are obtained by direct-reduction-mill ore magnetic selection technique, and such iron is produced
Product can be used as electric furnace steel making or the raw material of special steel (mainly weathering steel, 0.2~0.8wt% of cupric), but conduct after briquetting
During electric furnace steel making raw material, because copper is impurity element, by taking Fine Steel Casting iron as an example, copper content is typically required less than 0.25wt%,
Thus this cupric iron powder can only be sold as dispensing or at a discount.During as weathering steel raw material, due to by the market demand
Limitation, product advantage is also obvious.
Efficiently separated using conventional method copper difficult to realize, iron for cupric iron powder, thus iron product quality is low, product
Value is limited.In the prior art, the decopper(ing) technology only to molten steel carries out excessive quantifier elimination.But up to the present, do not have also
A kind of gratifying practical decopper(ing) technology.These methods are mostly because the removing inferior capabilities or condition to copper are too harsh
Cannot further develop.When such as being separated using fusing, small-sized scrap of the treatment containing a large amount of exposure copper is only applicable to；Using gasification point
During from method, then because process procedure is more, gaseous contamination environment the problems such as be difficult to large-scale promotion；During using vacuum separation method, then
Molten steel decopper(ing) is only applicable to, and there are problems that iron loss is big, remove speed, thus be difficult to large-scale industrial application.
Therefore, the technology of existing treatment two kinds of metallurgical slags of copper ashes and nickel slag is further improved.
The content of the invention
It is contemplated that at least solving one of technical problem in correlation technique to a certain extent.Therefore, of the invention
One purpose is to propose a kind of system and method for processing metallurgical slag.The system is by will be mixed containing metallurgical slag and reducing agent
Compound material direct-reduction-mill ore magnetic selection obtains cupric iron powder, then cupric iron powder is soaked into the copper realized, iron separation by ammonia so that
The rate of recovery of copper is not less than 98.5%, and the content of TFe is not less than 91.5wt% in iron powder, and the content of Cu is not more than 0.05wt%.
In one aspect of the invention, the present invention proposes a kind of system for processing metallurgical slag, implementation of the invention
Example, the system includes：
There is mixing arrangement, the mixing arrangement metallurgical slag entrance, reducing agent entrance, additive entrance and mixed material to go out
Mouthful；
There is reduction-grinding ore deposit concentration equipment, the reduction-grinding ore deposit concentration equipment mixed material entrance, cupric iron powder to export
Exported with tailings, the mixed material entrance is connected with mixed material outlet；
There is fine grinding device, the fine grinding device cupric iron powder entrance and the thin iron powder of cupric to export, and the cupric iron powder enters
Mouth is connected with cupric iron powder outlet；
There is ammonia bath unit, the ammonia bath unit the thin iron powder entrance of cupric, ammonia inlet, carbon dioxide entrance, iron powder to go out
Mouth and the outlet of cupric ammonia leaching solution, the thin iron powder entrance of cupric are connected with the thin iron powder outlet of the cupric；
There is ammonia steaming device, the ammonia steaming device cupric ammonia leaching solution entrance, air intake, carbon dioxide outlet, ammonia to go out
Mouthful and cupric oxide outlet, the outlet of the cupric ammonia leaching solution entrance and the cupric ammonia leaching solution is connected, the carbon dioxide outlet and
The carbon dioxide entrance is connected.
The system for the treatment of metallurgical slag according to embodiments of the present invention, by by the mixed material containing metallurgical slag and reducing agent
Directly carry out reduction-grinding ore deposit magnetic separation treatment, the iron in metallurgical slag can be reduced to metallic iron, and through magnetic separation after, cupric iron powder
Separated with tailings；Then cupric iron powder is finely ground to the thin iron powder of cupric, the surface area of the thin iron powder of cupric can be dramatically increased, favorably
In the efficiency for improving follow-up ammonia leaching treatment and ammonia still process treatment, the rate of dissolution of copper is improved, while saving energy consumption；Using ammoniacal liquor and two
Carbonoxide is processed the thin iron powder of above-mentioned cupric, because ammonia spirit can dissolve copper in the presence of having carbon dioxide (or ammonium carbonate)
Oxide and metallic copper, obtain containing the cuprous cupric ammonia leaching solution of ammonium carbonate, and iron still exists in metallic iron form, such that it is able to
The copper gone in iron power removing；And ammonium carbonate is cuprous can be oxidized in the presence of having air, the ammonium carbonate salts of copper are generated, and ammonium carbonate salts
Metallic copper can be further dissolved again, in this way, can be by the copper dissolution in the thin iron powder of cupric fully, after being processed through ammonia still process, ammonium carbonate is sub-
Copper reacts with oxygen, generation cupric oxide, ammonia and carbon dioxide, so as to realize the recycling of copper, and the ammonia for producing
Gas and carbon dioxide can be back to ammonia bath unit, advantageously reduce the cost of raw material of whole system.Thus, it is logical using the system
Cross and the mixed material direct-reduction-mill ore magnetic selection containing metallurgical slag and reducing agent is obtained into cupric iron powder, then will be contained using ammonia leaching
Copper and iron in copper and iron powder are separated, and are reclaimed copper using ammonia still process method, improve the purity of metal iron powder, the rate of recovery of copper
Not less than 98.5%, the content of TFe is not less than 91.5wt% in iron powder, and the content of Cu is not more than 0.05wt%, and is produced into
This relatively low, technological process is simple, better economic benefit.
In addition, the system for the treatment of metallurgical slag according to the above embodiment of the present invention, can also have following additional technology
Feature：
In some embodiments of the invention, the system of above-mentioned treatment metallurgical slag is further included：Water absorption plant, it is described
There is water absorption plant ammonia entrance and ammoniacal liquor to export, and the ammonia entrance is connected with the ammonia outlet, the ammoniacal liquor outlet
It is connected with the ammonia inlet.Thus, the Ammonia recovery obtained by ammonia steaming device is utilized, reduces the cost of raw material of system, carried
The economy of system high.
In some embodiments of the invention, the ammonia bath unit is stirred leaching tank.Thus, be conducive to raising cupric thin
The rate of dissolution of copper in iron powder.
In some embodiments of the invention, the ammonia steaming device is destilling tower.Thus, be conducive to improving ammonia still process treatment
Efficiency, while reclaiming ammonia and carbon dioxide.
In another aspect of the invention, it is metallurgical that the present invention proposes a kind of system treatment using above-mentioned treatment metallurgical slag
The method of slag, embodiments in accordance with the present invention, the method includes：
(1) metallurgical slag, reducing agent and additive are supplied into the mixing arrangement and is mixed, to be mixed
Compound material；
(2) supplying into the reduction-grinding ore deposit concentration equipment mixed material carries out reduction-grinding ore deposit treatment, so as to
Obtain cupric iron powder and tailings；
(3) supply the cupric iron powder carries out fine grinding treatment into the fine grinding device, to obtain the thin iron powder of cupric；
(4) supplying into the ammonia bath unit the thin iron powder of the cupric, ammoniacal liquor and carbon dioxide carries out ammonia leaching treatment, with
Just iron powder and cupric ammonia leaching solution are obtained；
(5) supplying the cupric ammonia leaching solution and air carries out ammonia still process treatment into the ammonia steaming device, to obtain two
Carbonoxide, ammonia and cupric oxide, and by the ammonia bath unit in the carbon dioxide return to step (4).
The method for the treatment of metallurgical slag according to embodiments of the present invention, by by the mixed material containing metallurgical slag and reducing agent
Directly carry out reduction-grinding ore deposit magnetic separation treatment, the iron in metallurgical slag can be reduced to metallic iron, and through magnetic separation after, cupric iron powder
Separated with tailings；Then cupric iron powder is finely ground to the thin iron powder of cupric, the surface area of the thin iron powder of cupric can be dramatically increased, favorably
In the efficiency for improving follow-up ammonia leaching treatment and ammonia still process treatment, the rate of dissolution of copper is improved, while saving energy consumption；Using ammoniacal liquor and two
Carbonoxide is processed the thin iron powder of above-mentioned cupric, because ammonia spirit can dissolve copper in the presence of having carbon dioxide (or ammonium carbonate)
Oxide and metallic copper, obtain containing the cuprous cupric ammonia leaching solution of ammonium carbonate, and iron still exists in metallic iron form, such that it is able to
The copper gone in iron power removing；And ammonium carbonate is cuprous can be oxidized in the presence of having air, the ammonium carbonate salts of copper are generated, and ammonium carbonate salts
Metallic copper can be further dissolved again, in this way, can be by the copper dissolution in the thin iron powder of cupric fully, after being processed through ammonia still process, ammonium carbonate is sub-
Copper reacts with oxygen, generation cupric oxide, ammonia and carbon dioxide, so as to realize the recycling of copper, and the ammonia for producing
Gas and carbon dioxide can be back to ammonia bath unit, advantageously reduce the cost of raw material of whole system.Thus, it is logical using the method
Cross and the mixed material direct-reduction-mill ore magnetic selection containing metallurgical slag and reducing agent is obtained into cupric iron powder, then will be contained using ammonia leaching
Copper and iron in copper and iron powder are separated, and are reclaimed copper using ammonia still process method, improve the purity of metal iron powder, the rate of recovery of copper
Not less than 98.5%, the content of TFe is not less than 91.5wt% in iron powder, and the content of Cu is not more than 0.05wt%, and is produced into
This relatively low, technological process is simple, better economic benefit.
In addition, the method for the treatment of metallurgical slag according to the above embodiment of the present invention, can also have following additional technology
Feature：
In some embodiments of the invention, the method for above-mentioned treatment metallurgical slag is further included：(6) step (5) is obtained
The ammonia supply into the water absorption plant, to obtain ammoniacal liquor, and the ammoniacal liquor is back to the institute in step (4)
State ammonia bath unit.Thus, by the recycling of the ammonia obtained by ammonia device, the cost of raw material of system is reduced, improves system
Economy.
In some embodiments of the invention, in step (1), in the metallurgical slag copper content be 0.15~
0.85wt%, all iron content is 35~45wt%.
In some embodiments of the invention, in step (1), by the metallurgical slag, the reducing agent and the addition
Agent is 100 according to mass ratio：(10~30)：(3~15) are mixed.Thus, be conducive to improving the recovery of iron powder and cupric oxide
Rate.
In some embodiments of the invention, in step (2), copper content is 0.4~1wt% in the cupric iron powder,
Iron content is 90~95wt%.Thus, can further improve the economy of system.
In some embodiments of the invention, in step (3), the particle diameter of the thin iron powder of cupric is not more than 74 microns.
Thus, be conducive to improving the efficiency of ammonia leaching treatment, increase the rate of dissolution of copper.
In some embodiments of the invention, in step (4), ammoniacal liquor quality is dense in the ammonia leaching processing procedure ammonia leaching solution
It is 1~10% to spend, and carbon dioxide mass concentration is 2~6%.Thus, the efficiency of ammonia leaching treatment is can further improve, increases copper
Rate of dissolution.
In some embodiments of the invention, in step (4), liquid-solid ratio is (1~10) in the ammonia leaching treatment:1, temperature
It is 40~50 degrees Celsius to spend, and the time is not less than 10min.Thus, the efficiency of ammonia leaching treatment is can further improve, increases the dissolving of copper
Speed.
Additional aspect of the invention and advantage will be set forth in part in the description, and will partly become from the following description
Obtain substantially, or recognized by practice of the invention.
Brief description of the drawings
Of the invention above-mentioned and/or additional aspect and advantage will become from description of the accompanying drawings below to embodiment is combined
Substantially and be readily appreciated that, wherein：
Fig. 1 is the system structure diagram for the treatment of metallurgical slag according to an embodiment of the invention；
Fig. 2 is the system structure diagram of the treatment metallurgical slag according to further embodiment of the present invention；
Fig. 3 is the method flow schematic diagram for the treatment of metallurgical slag according to an embodiment of the invention；
Fig. 4 is the method flow schematic diagram of the treatment metallurgical slag according to further embodiment of the present invention.
Specific embodiment
Embodiments of the invention are described below in detail, the example of the embodiment is shown in the drawings, wherein from start to finish
Same or similar label represents same or similar element or the element with same or like function.Below with reference to attached
It is exemplary to scheme the embodiment of description, it is intended to for explaining the present invention, and be not considered as limiting the invention.
In the present invention, unless otherwise clearly defined and limited, term " installation ", " connected ", " connection ", " fixation " etc.
Term should be interpreted broadly, for example, it may be fixedly connected, or be detachably connected, or integrally；Can be that machinery connects
Connect, or electrically connect；Can be joined directly together, it is also possible to be indirectly connected to by intermediary, can be in two elements
The connection in portion or two interaction relationships of element, unless otherwise clearly restriction.For one of ordinary skill in the art
For, can as the case may be understand above-mentioned term concrete meaning in the present invention.
In one aspect of the invention, the present invention proposes a kind of system for processing metallurgical slag, implementation of the invention
Example, with reference to Fig. 1, the system includes：Mixing arrangement 100, reduction-grinding ore deposit concentration equipment 200, fine grinding device 300, ammonia bath unit
400 and ammonia steaming device 500.
Embodiments in accordance with the present invention, mixing arrangement 100 has metallurgical slag entrance 101, reducing agent entrance 102, additive
Entrance 103 and mixed material outlet 104, and be suitable to be mixed metallurgical slag, reducing agent and additive, to obtain mixture
Material.Specifically, metallurgical slag can include at least one in copper ashes and nickel slag.Thus, be conducive to improving metallurgical slag and reducing agent,
The contact area of additive, and then improve the speed that mixed material is processed in sequential reduction.It should be noted that reducing agent and adding
Plus the type of agent is not particularly restricted, those skilled in the art can be selected according to actual needs, for example, reducing agent
Can be reduction coal, additive can be calcium oxide.
According to one embodiment of present invention, the content of the content of copper and full iron is not particularly restricted in metallurgical slag, this
The technical staff in field can be selected according to actual needs, a specific embodiment of the invention, copper in metallurgical slag
Content can be 0.15~0.85wt%, and all iron content can be 35~45wt%.Inventor has found, if iron contains in metallurgical slag
Too high or copper content is measured too low, technically with regard to the necessity without copper removal；If iron content is too low, then in meaning cupric iron powder
Remaining impurity content is too high, and these impurity can have a strong impact on the quality of iron product and oxidation copper products.Inventor is by a large amount of examinations
Issue after examination and approval now, when copper content is 0.15~0.85wt% in metallurgical slag, when iron content is 35~45wt%, using technology of the invention
Copper and iron good separating effect is may be such that, the grade of the iron product for finally giving and oxidation copper products is high.
According to still a further embodiment, metallurgical slag does not receive special with the mixing quality ratio of reducing agent, additive
Limitation, those skilled in the art can be selected according to actual needs, a specific embodiment of the invention, can be with
By metallurgical slag, reducing agent and additive according to mass ratio 100：(10~30)：(3~15) are mixed.Inventor has found, reduces
When agent consumption is too low, the reduction effect of iron is bad in metallurgical slag, when reducing agent consumption is too high, can not significantly improve the recovery of iron
Index and cause the waste of reducing agent.Allocating into for additive is intended to the reduction and recovery that promote iron in metallurgical slag, too high or too low
Effect is bad.Inventor had been surprisingly found that by lot of experiments, when by metallurgical slag, reducing agent and additive according to mass ratio 100：
(10~30)：When (3~15) are mixed, the iron in metallurgical slag can be made fully to be reduced, iron recovery index is good.
There is embodiments in accordance with the present invention, reduction-grinding ore deposit concentration equipment 200 mixed material entrance 201, cupric iron powder to go out
Mouth 202 and tailings outlet 203, mixed material entrance 201 is connected with mixed material outlet 104, and is suitable to carry out mixed material
Reduction-grinding ore deposit treatment, to obtain cupric iron powder and tailings.Inventor has found, iron in metallurgical slag it is main with fayalite and
The form of ferroso-ferric oxide is present, and reduction-grinding ore deposit concentration equipment includes reduction, ore grinding and magnetic separation, and metallurgical slag is in certain reduction
Under the conditions of, there is reduction reaction in fayalite and ferroso-ferric oxide, obtain metallic iron, silica and one with the carbon in reducing agent
Carbonoxide, and carbon monoxide can act also as reducing agent and further be reacted with fayalite and ferroso-ferric oxide, in this way, can significantly carry
The content of iron in cupric iron powder high, additive can be as flux, so as to reduce the energy consumption of reduction treatment.It should be noted that
Reduction-grinding ore deposit concentration equipment is not particularly restricted, and those skilled in the art can be selected according to actual needs, for example
Can be the combined apparatus of rotary hearth furnace and mill ore magnetic selection device, and those skilled in the art can according to actual needs to reduction
Concrete operations condition with mill ore magnetic selection process is selected.The reaction equation of the main chemical reactions that the reduction process occurs has：
Fe2SiO4+ 2C=2Fe+SiO2+2CO (1)
Fe3O4+ 4C=3Fe+4CO (2)
CO2+ C=2CO (3)
Fe2SiO4+ 2CO=2Fe+SiO2+2CO2 (4)
Fe3O4+ 4CO=3Fe+4CO2 (5)
According to one embodiment of present invention, the content of copper and iron is not particularly restricted in cupric iron powder, this area skill
Art personnel can be selected according to actual needs, a specific embodiment of the invention, and copper content can in cupric iron powder
Think 0.4~1wt%, iron content can be 90~95wt%.Inventor has found, if iron content is too high in cupric iron powder or copper
Content is too low (iron content close to 100wt% or copper content close to 0wt%), technically just necessity without copper removal；If iron contains
Amount is too low, then remaining impurity content is too high in meaning cupric iron powder, and these impurity can have a strong impact on iron product and cupric oxide
The quality of product.Inventor by lot of experiments find, when in cupric iron powder copper content be 0.4~1wt%, iron content be 90~
During 95wt%, copper and iron good separating effect may be such that using technology of the invention, the iron product for finally giving and oxidation copper products
Grade is high.
Embodiments in accordance with the present invention, fine grinding device 300 has cupric iron powder entrance 301 and the thin iron powder outlet 302 of cupric,
Cupric iron powder entrance 301 is connected with cupric iron powder outlet 202, and is suitable to for cupric iron powder to carry out fine grinding treatment, to be contained
The thin iron powder of copper.Inventor's discovery, the thin iron powder of cupric is finely ground to by by cupric iron powder, can dramatically increase the surface of the thin iron powder of cupric
Product, is conducive to improving the efficiency of follow-up ammonia leaching treatment and ammonia still process treatment, the rate of dissolution of copper is improved, while saving energy consumption.Need
Illustrate, fine grinding device is not particularly restricted, those skilled in the art can be selected according to actual needs, for example may be used
Think ball mill.
According to one embodiment of present invention, the particle diameter of the thin iron powder of cupric is not particularly restricted, those skilled in the art
Can be selected according to actual needs, a specific embodiment of the invention, the particle diameter of the thin iron powder of cupric can be little
In 74 microns.Inventor's discovery, compared to other particle diameters, can ensure that copper is sufficiently exposed to outside under the particle diameter, make itself and ammonia
Immersion liquid has sufficiently large contact area, is conducive to improving reaction rate.
Embodiments in accordance with the present invention, ammonia bath unit 400 has the thin iron powder entrance 401 of cupric, ammonia inlet 402, dioxy
Change carbon entrance 403, iron powder outlet 404 and cupric ammonia leaching solution outlet 405, the thin iron powder entrance 401 of cupric and the thin iron powder outlet of cupric
302 are connected, and are suitable to for the thin iron powder of cupric, ammoniacal liquor and carbon dioxide to carry out ammonia leaching treatment, to obtain iron powder and to be soaked containing cuprammonium
Liquid.Inventor is had found, the thin iron powder of above-mentioned cupric is processed by using ammoniacal liquor and carbon dioxide, because ammonia spirit is having two
Cu oxide and metallic copper can be dissolved in the presence of carbonoxide (or ammonium carbonate), is obtained containing the cuprous cupric ammonia leaching solution of ammonium carbonate,
And iron still exists in metallic iron form, such that it is able to remove the copper in iron power removing, the iron powder of high-purity is obtained.Occur in the device
The reaction equation of main chemical reactions is：
CuO+2NH4OH+(NH4)2CO3=Cu (NH3)4CO3+3H2O (6)
Cu(NH3)4CO3+ Cu=Cu2(NH3)4CO3 (7)
According to one embodiment of present invention, ammonia bath unit is not particularly restricted, and those skilled in the art can basis
It is actually needed and is selected, a specific embodiment of the invention, ammonia bath unit can be stirred leaching tank.Thus, have
Beneficial to the rate of dissolution for improving copper in the thin iron powder of cupric.
According to still a further embodiment, ammoniacal liquor mass concentration and titanium dioxide carbonaceous in ammonia leaching processing procedure ammonia leaching solution
Amount concentration is not particularly restricted, and those skilled in the art can be selected according to actual needs, one of the invention
Specific embodiment, ammoniacal liquor mass concentration can be 1~10% in ammonia leaching processing procedure ammonia leaching solution, and carbon dioxide mass concentration can be with
It is 2~6%.Inventor has found that ammoniacal liquor mass concentration and carbon dioxide mass concentration are too low in ammonia leaching processing procedure ammonia leaching solution,
The Leach reaction speed of copper can be reduced；If ammoniacal liquor mass concentration is too high, Ammonia valatilization can be caused serious, cause a large amount of ammonia reagents
Loss；Ammoniacal liquor mass concentration can not it is too high on the premise of, unilaterally make that carbon dioxide mass concentration is too high can not to improve copper
Leach reaction speed, can also cause waste.Inventor has been surprisingly found that ammoniacal liquor mass concentration is in ammonia leaching solution by lot of experiments
1~10%, when carbon dioxide mass concentration is 2~6%, the copper dissolution rate in the thin iron powder of cupric is fast, copper and iron good separating effect.
According to still another embodiment of the invention, the condition of ammonia leaching treatment is not particularly restricted, those skilled in the art
Can be selected according to actual needs, a specific embodiment of the invention, liquid-solid ratio can be (1 in ammonia leaching treatment
~10):1, temperature can be 40~50 degrees Celsius, and the time can be not less than 10min.Inventor has found that liquid is consolidated in ammonia leaching treatment
Than it is too high when, can cause the waste of ammonia leaching solution, and liquid-solid ratio it is too low when, then copper dissolution can be caused insufficient, be unfavorable for obtaining height
The iron powder of purity.And ammonia leaching temperature is too low can have a strong impact on reaction rate, temperature is too high, can increase the partial pressure of ammonia, damages ammonia
Lose serious.Inventor is had been surprisingly found that by many experiments, be may be such that when the time of ammonia leaching treatment is in scope of the present invention
Copper in the thin iron powder of cupric farthest dissolves.
Embodiments in accordance with the present invention, ammonia steaming device 500 has cupric ammonia leaching solution entrance 501, air intake 502, dioxy
Change carbon outlet 503, ammonia outlet 504 and cupric oxide outlet 505, cupric ammonia leaching solution entrance 501 exports 405 phases with cupric ammonia leaching solution
Even, carbon dioxide outlet 503 is connected with carbon dioxide entrance 403, and is suitable to for cupric ammonia leaching solution and air to carry out ammonia still process treatment,
To obtain carbon dioxide, ammonia and cupric oxide, and carbon dioxide is returned into ammonia bath unit.Inventor has found, is processed through ammonia leaching
The cuprous ammonium carbonate salts that can be oxidized in the presence of having air, generate copper of ammonium carbonate for obtaining, and ammonium carbonate salts can be further
Dissolving metallic copper, in this way, can be by the copper dissolution in the thin iron powder of cupric fully, after being processed through ammonia still process, ammonium carbonate is cuprous to be sent out with oxygen
Raw reaction, generation cupric oxide, ammonia and carbon dioxide, so as to realize the recycling of copper, and the ammonia that produces and titanium dioxide
Carbon can be back to ammonia bath unit, advantageously reduce the cost of raw material of whole system.The main chemical reactions occurred in the device
Reaction equation be：
Cu2(NH3)4CO3+(NH4)2CO3+2NH4OH+0.5O2=2Cu (NH3)4CO3+3H2O (8)
2Cu2(NH3)4CO3+O2=4CuO+8NH3+2CO2 (9)
According to one embodiment of present invention, ammonia steaming device is not particularly restricted, and those skilled in the art can basis
It is actually needed and is selected, a specific embodiment of the invention, ammonia steaming device can be destilling tower.Thus, be conducive to
The efficiency of ammonia still process treatment is improved, while reclaiming ammonia and carbon dioxide.
Specifically, cupric ammonia leaching solution is allowed to be atomized by the nozzle on ammonia steaming device (destilling tower) top, atomized particles exist
Moved downward in suspended state in tower, mass-and heat-transfer is carried out rapidly with the steam stream for being passed through tower bottom and from bottom to top move, made
Volatile NH3And CO2Become steam state to be discharged from tower top, and cupric ammine complex Cu2(NH3)4CO3Then thermally decompose, copper is with oxygen
Change copper CuO Precipitations, bottom of towe is fallen under the CuO of precipitation is because its proportion is larger under suspended state and is discharged with raffinate.
The system for the treatment of metallurgical slag according to embodiments of the present invention, by by the mixed material containing metallurgical slag and reducing agent
Directly carry out reduction-grinding ore deposit magnetic separation treatment, the iron in metallurgical slag can be reduced to metallic iron, and through magnetic separation after, cupric iron powder
Separated with tailings；Then cupric iron powder is finely ground to the thin iron powder of cupric, the surface area of the thin iron powder of cupric can be dramatically increased, favorably
In the efficiency for improving follow-up ammonia leaching treatment and ammonia still process treatment, the rate of dissolution of copper is improved, while saving energy consumption；Using ammoniacal liquor and two
Carbonoxide is processed the thin iron powder of above-mentioned cupric, because ammonia spirit can dissolve copper in the presence of having carbon dioxide (or ammonium carbonate)
Oxide and metallic copper, obtain containing the cuprous cupric ammonia leaching solution of ammonium carbonate, and iron still exists in metallic iron form, such that it is able to
The copper gone in iron power removing；And ammonium carbonate is cuprous can be oxidized in the presence of having air, the ammonium carbonate salts of copper are generated, and ammonium carbonate salts
Metallic copper can be further dissolved again, in this way, can be by the copper dissolution in the thin iron powder of cupric fully, after being processed through ammonia still process, ammonium carbonate is sub-
Copper reacts with oxygen, generation cupric oxide, ammonia and carbon dioxide, so as to realize the recycling of copper, and the ammonia for producing
Gas and carbon dioxide can be back to ammonia bath unit, advantageously reduce the cost of raw material of whole system.Thus, it is logical using the system
Cross and the mixed material direct-reduction-mill ore magnetic selection containing metallurgical slag and reducing agent is obtained into cupric iron powder, then will be contained using ammonia leaching
Copper and iron in copper and iron powder are separated, and are reclaimed copper using ammonia still process method, improve the purity of metal iron powder, the rate of recovery of copper
Not less than 98.5%, the content of TFe is not less than 91.5wt% in iron powder, and the content of Cu is not more than 0.05wt%, and is produced into
This relatively low, technological process is simple, better economic benefit.
The system for the treatment of metallurgical slag according to the above embodiment of the present invention, with reference to Fig. 2, the system is further included：Water is inhaled
Receiving apparatus 600.
Embodiments in accordance with the present invention, water absorption plant 600 has ammonia entrance 601 and ammoniacal liquor outlet 602, ammonia entrance
601 are connected with ammonia outlet 504, and ammoniacal liquor outlet 602 is connected with ammonia inlet 402 and is suitable to enter the ammonia that ammonia steaming device is obtained
Row treatment, to obtain ammoniacal liquor, and is back to ammonia bath unit by ammoniacal liquor.Thus, the ammonia that ammonia steaming device is produced can fully be returned
Receive, and the ammoniacal liquor of gained can be back to above-mentioned ammonia bath unit, advantageously reduce the cost of raw material of whole system, reduce energy
Consumption, improves the economy of system.
In another aspect of the invention, it is metallurgical that the present invention proposes a kind of system treatment using above-mentioned treatment metallurgical slag
The method of slag, embodiments in accordance with the present invention, with reference to Fig. 3, the method includes：
S100：Metallurgical slag, reducing agent and additive are supplied and is mixed into mixing arrangement
In the step, metallurgical slag, reducing agent and additive are supplied and is mixed into mixing arrangement, to be mixed
Material.Specifically, metallurgical slag can include at least one in copper ashes and nickel slag.Thus, be conducive to improving metallurgical slag with reduction
Agent, the contact area of additive, and then improve the speed that mixed material is processed in sequential reduction.It should be noted that reducing agent
Type with additive is not particularly restricted, and those skilled in the art can be selected according to actual needs, for example, also
Former agent can be reduction coal, and additive can be calcium oxide.
According to one embodiment of present invention, the content of the content of copper and full iron is not particularly restricted in metallurgical slag, this
The technical staff in field can be selected according to actual needs, a specific embodiment of the invention, copper in metallurgical slag
Content can be 0.15~0.85wt%, and all iron content can be 35~45wt%.Inventor has found, if iron contains in metallurgical slag
Too high or copper content is measured too low, technically with regard to the necessity without copper removal；If iron content is too low, then in meaning cupric iron powder
Remaining impurity content is too high, and these impurity can have a strong impact on the quality of iron product and oxidation copper products.Inventor is by a large amount of examinations
Issue after examination and approval now, when copper content is 0.15~0.85wt% in metallurgical slag, when iron content is 35~45wt%, using technology of the invention
Copper and iron good separating effect is may be such that, the grade of the iron product for finally giving and oxidation copper products is high.
According to still a further embodiment, metallurgical slag does not receive special with the mixing quality ratio of reducing agent, additive
Limitation, those skilled in the art can be selected according to actual needs, a specific embodiment of the invention, can be with
By metallurgical slag, reducing agent and additive according to mass ratio 100：(10~30)：(3~15) are mixed.Inventor has found, reduces
When agent consumption is too low, the reduction effect of iron is bad in metallurgical slag, when reducing agent consumption is too high, can not significantly improve the recovery of iron
Index and cause the waste of reducing agent.Allocating into for additive is intended to the reduction and recovery that promote iron in metallurgical slag, too high or too low
Effect is bad.Inventor had been surprisingly found that by lot of experiments, when by metallurgical slag, reducing agent and additive according to mass ratio 100：
(10~30)：When (3~15) are mixed, the iron in metallurgical slag can be made fully to be reduced, iron recovery index is good.
S200：Mixed material is supplied into reduction-grinding ore deposit concentration equipment carries out reduction-grinding ore deposit treatment
In the step, mixed material is supplied into reduction-grinding ore deposit concentration equipment carries out reduction-grinding ore deposit treatment, so as to
To cupric iron powder and tailings.Inventor has found that the iron in metallurgical slag is main to be existed in the form of fayalite and ferroso-ferric oxide,
Reduction-grinding ore deposit concentration equipment includes reduction, ore grinding and magnetic separation, metallurgical slag under certain reducing condition, fayalite and four oxygen
Change three-iron and reduction reaction occurs with the carbon in reducing agent, obtain metallic iron, silica and carbon monoxide, and carbon monoxide also may be used
Further reacted with fayalite and ferroso-ferric oxide as reducing agent, in this way, the content of iron in cupric iron powder is remarkably improved,
Additive can be as flux, so as to reduce the energy consumption of reduction treatment.It should be noted that reduction-grinding ore deposit concentration equipment is not
It is particularly limited, those skilled in the art can be selected according to actual needs, for example, can is rotary hearth furnace and ore grinding magnetic
The combined apparatus of screening device, and those skilled in the art can according to actual needs to reduction and mill ore magnetic selection process it is specific
Operating condition is selected.The reaction equation of the main chemical reactions that the reduction process occurs has：
Fe2SiO4+ 2C=2Fe+SiO2+2CO (1)
Fe3O4+ 4C=3Fe+4CO (2)
CO2+ C=2CO (3)
Fe2SiO4+ 2CO=2Fe+SiO2+2CO2 (4)
Fe3O4+ 4CO=3Fe+4CO2 (5)
According to one embodiment of present invention, the content of copper and iron is not particularly restricted in cupric iron powder, this area skill
Art personnel can be selected according to actual needs, a specific embodiment of the invention, and copper content can in cupric iron powder
Think 0.4~1wt%, iron content can be 90~95wt%.Inventor has found, if iron content is too high in cupric iron powder or copper
Content is too low (iron content close to 100wt% or copper content close to 0wt%), technically just necessity without copper removal；If iron contains
Amount is too low, then remaining impurity content is too high in meaning cupric iron powder, and these impurity can have a strong impact on iron product and cupric oxide
The quality of product.Inventor by lot of experiments find, when in cupric iron powder copper content be 0.4~1wt%, iron content be 90~
During 95wt%, copper and iron good separating effect may be such that using technology of the invention, the iron product for finally giving and oxidation copper products
Grade is high..
S300：Cupric iron powder is supplied carries out fine grinding treatment into fine grinding device
In the step, cupric iron powder is supplied carries out fine grinding treatment into fine grinding device, to obtain the thin iron powder of cupric.Hair
Person of good sense's discovery, the thin iron powder of cupric is finely ground to by by cupric iron powder, can dramatically increase the surface area of the thin iron powder of cupric, is conducive to carrying
Follow-up ammonia leaching treatment high and the efficiency of ammonia still process treatment, improve the rate of dissolution of copper, while saving energy consumption.It should be noted that thin
Mill apparatus are not particularly restricted, and those skilled in the art can be selected according to actual needs, for example, can be ball mill.
According to one embodiment of present invention, the particle diameter of the thin iron powder of cupric is not particularly restricted, those skilled in the art
Can be selected according to actual needs, a specific embodiment of the invention, the particle diameter of the thin iron powder of cupric can be little
In 74 microns.Inventor's discovery, compared to other particle diameters, can ensure that copper is sufficiently exposed to outside under the particle diameter, make itself and ammonia
Immersion liquid has sufficiently large contact area, is conducive to improving reaction rate.
S400：The thin iron powder of cupric, ammoniacal liquor and carbon dioxide are supplied carries out ammonia leaching treatment into ammonia bath unit
In the step, the thin iron powder of cupric, ammoniacal liquor and carbon dioxide are supplied carries out ammonia leaching treatment into ammonia bath unit, so as to
Obtain iron powder and cupric ammonia leaching solution.Inventor has found, at using ammoniacal liquor and carbon dioxide to the thin iron powder of above-mentioned cupric
Reason, because ammonia spirit can dissolve Cu oxide and metallic copper in the presence of having carbon dioxide (or ammonium carbonate), obtains containing carbonic acid
The cuprous cupric ammonia leaching solution of ammonium, and iron still exists in metallic iron form, such that it is able to remove the copper in iron power removing, obtains high-purity
Iron powder.The reaction equation of the main chemical reactions of generation is in the device：
CuO+2NH4OH+(NH4)2CO3=Cu (NH3)4CO3+3H2O (6)
Cu(NH3)4CO3+ Cu=Cu2(NH3)4CO3 (7)
According to one embodiment of present invention, ammoniacal liquor mass concentration and carbon dioxide quality in ammonia leaching processing procedure ammonia leaching solution
Concentration is not particularly restricted, and those skilled in the art can be selected according to actual needs, a tool of the invention
Body embodiment, ammoniacal liquor mass concentration can be 1~10% in ammonia leaching processing procedure ammonia leaching solution, and carbon dioxide mass concentration can be
2~6%.Inventor has found that ammoniacal liquor mass concentration and carbon dioxide mass concentration are too low in ammonia leaching processing procedure ammonia leaching solution, can
Reduce the Leach reaction speed of copper；If ammoniacal liquor mass concentration is too high, Ammonia valatilization can be caused serious, cause a large amount of ammonia reagents to damage
Lose；Ammoniacal liquor mass concentration can not it is too high on the premise of, unilaterally make that carbon dioxide mass concentration is too high can not to improve copper
Leach reaction speed, can also cause to waste.Inventor has been surprisingly found that ammoniacal liquor mass concentration is 1 in ammonia leaching solution by lot of experiments
~10%, when carbon dioxide mass concentration is 2~6%, the copper dissolution rate in the thin iron powder of cupric is fast, copper and iron good separating effect.
According to still a further embodiment, the condition of ammonia leaching treatment is not particularly restricted, those skilled in the art
Can be selected according to actual needs, a specific embodiment of the invention, liquid-solid ratio can be (1 in ammonia leaching treatment
~10):1, temperature can be 40~50 degrees Celsius, and the time can be not less than 10min.Inventor has found that liquid is consolidated in ammonia leaching treatment
Than it is too high when, can cause the waste of ammonia leaching solution, and liquid-solid ratio it is too low when, then copper dissolution can be caused insufficient, be unfavorable for obtaining height
The iron powder of purity.And ammonia leaching temperature is too low can have a strong impact on reaction rate, temperature is too high, can increase the partial pressure of ammonia, damages ammonia
Lose serious.Inventor is had been surprisingly found that by many experiments, be may be such that when the time of ammonia leaching treatment is in scope of the present invention
Copper in the thin iron powder of cupric farthest dissolves.
S500：Cupric ammonia leaching solution and air are supplied into ammonia steaming device carries out ammonia still process treatment
In the step, cupric ammonia leaching solution and air are supplied into ammonia steaming device carries out ammonia still process treatment, to obtain dioxy
Change carbon, ammonia and cupric oxide, and carbon dioxide is returned into the ammonia bath unit in S400.Inventor has found, is obtained through ammonia leaching treatment
The cuprous ammonium carbonate salts that can be oxidized in the presence of having air, generate copper of ammonium carbonate, and ammonium carbonate salts can further dissolve
Metallic copper, in this way, can be by the copper dissolution in the thin iron powder of cupric fully, after being processed through ammonia still process, ammonium carbonate is cuprous to be occurred instead with oxygen
Should, generation cupric oxide, ammonia and carbon dioxide, so as to realize the recycling of copper, and the ammonia and carbon dioxide of generation can
Ammonia bath unit is back to, the cost of raw material of whole system is advantageously reduced.The main chemical reactions of generation is anti-in the device
Ying Shiwei：
Cu2(NH3)4CO3+(NH4)2CO3+2NH4OH+0.5O2=2Cu (NH3)4CO3+3H2O (8)
2Cu2(NH3)4CO3+O2=4CuO+8NH3+2CO2 (9)
Specifically, cupric ammonia leaching solution is allowed to be atomized by the nozzle on ammonia steaming device (destilling tower) top, atomized particles exist
Moved downward in suspended state in tower, mass-and heat-transfer is carried out rapidly with the steam stream for being passed through tower bottom and from bottom to top move, made
Volatile NH3And CO2Become steam state to be discharged from tower top, and cupric ammine complex Cu2(NH3)4CO3Then thermally decompose, copper is with oxygen
Change copper CuO Precipitations, bottom of towe is fallen under the CuO of precipitation is because its proportion is larger under suspended state and is discharged with raffinate.
The method for the treatment of metallurgical slag according to embodiments of the present invention, by by the mixed material containing metallurgical slag and reducing agent
Directly carry out reduction-grinding ore deposit magnetic separation treatment, the iron in metallurgical slag can be reduced to metallic iron, and through magnetic separation after, cupric iron powder
Separated with tailings；Then cupric iron powder is finely ground to the thin iron powder of cupric, the surface area of the thin iron powder of cupric can be dramatically increased, favorably
In the efficiency for improving follow-up ammonia leaching treatment and ammonia still process treatment, the rate of dissolution of copper is improved, while saving energy consumption；Using ammoniacal liquor and two
Carbonoxide is processed the thin iron powder of above-mentioned cupric, because ammonia spirit can dissolve copper in the presence of having carbon dioxide (or ammonium carbonate)
Oxide and metallic copper, obtain containing the cuprous cupric ammonia leaching solution of ammonium carbonate, and iron still exists in metallic iron form, such that it is able to
The copper gone in iron power removing；And ammonium carbonate is cuprous can be oxidized in the presence of having air, the ammonium carbonate salts of copper are generated, and ammonium carbonate salts
Metallic copper can be further dissolved again, in this way, can be by the copper dissolution in the thin iron powder of cupric fully, after being processed through ammonia still process, ammonium carbonate is sub-
Copper reacts with oxygen, generation cupric oxide, ammonia and carbon dioxide, so as to realize the recycling of copper, and the ammonia for producing
Gas and carbon dioxide can be back to ammonia bath unit, advantageously reduce the cost of raw material of whole system.Thus, it is logical using the method
Cross and the mixed material direct-reduction-mill ore magnetic selection containing metallurgical slag and reducing agent is obtained into cupric iron powder, then will be contained using ammonia leaching
Copper and iron in copper and iron powder are separated, and are reclaimed copper using ammonia still process method, improve the purity of metal iron powder, the rate of recovery of copper
Not less than 98.5%, the content of TFe is not less than 91.5wt% in iron powder, and the content of Cu is not more than 0.05wt%, and is produced into
This relatively low, technological process is simple, better economic benefit.
The method for the treatment of metallurgical slag according to the above embodiment of the present invention, with reference to Fig. 4, the method is further included：
S600：The ammonia that S500 is obtained is supplied into water absorption plant
In the step, the ammonia that S500 is obtained is supplied into water absorption plant, to obtain ammoniacal liquor, and ammoniacal liquor is returned
Ammonia bath unit into S200.Thus, the ammonia that ammonia steaming device is produced can fully be reclaimed, and can be by the ammoniacal liquor reuse of gained
In above-mentioned ammonia bath unit, the cost of raw material of whole system is advantageously reduced, reducing energy consumption improves the economy of system.
Below with reference to specific embodiment, present invention is described, it is necessary to explanation, these embodiments are only description
Property, and the present invention is limited never in any form.
Embodiment 1
By domestic certain company's copper ashes with reduction coal, additive according to mass ratio 100：10：3 are mixed in batch mixer, its
In, TFe contains 35wt% in copper ashes, and Cu contains 0.15wt%, obtains mixed material；Then said mixture material is directly gone back
Original-mill ore magnetic selection treatment, obtains cupric 0.4wt%, the cupric iron powder of iron content 90wt%；Then cupric iron powder is delivered into fine grinding dress
Putting carries out fine grinding treatment, obtains cupric thin iron powder of the particle diameter less than 74 microns；Then by the thin iron powder of above-mentioned cupric, ammoniacal liquor and dioxy
Change carbon is delivered to and carried out in stirred leaching tank ammonia leaching reaction, and ammonia leaching condition is：Ammoniacal liquor mass concentration is 1%, and carbon dioxide quality is dense
Degree is (with (NH4)2CO3Meter) it is 2%, liquid-solid ratio is 10:1, ammonia leaching temperature is 40 degrees Celsius, and the time is 2h, after reaction terminates, is entered
Row separation of solid and liquid, obtains iron powder and cupric ammonia leaching solution, and TFe contains 91.5wt% in iron powder, and Cu contains 0.05wt%, and iron powder can be as
The steelmaking feed of Fine Steel Casting iron, copper is main with Cu in cupric ammonia leaching solution2(NH3)4CO3Form is present；Then by above-mentioned containing cuprammonium
Immersion liquid delivers to destilling tower and carries out distillation treatment with air, obtains carbon dioxide, ammonia and cupric oxide, and the grade of cupric oxide is
98%；The ammonia of gained is finally obtained ammoniacal liquor through water absorption plant, is back to together with the carbon dioxide obtained by destilling tower and stirred
Mix and used as raw material in leaching tanks, the rate of recovery of whole technique copper is up to 98.5%.
Embodiment 2
By domestic certain company's nickel slag with reduction coal, additive according to mass ratio 100：15：7 are mixed in batch mixer, its
In, TFe contains 40wt% in copper ashes, and Cu contains 0.30wt%, obtains mixed material；Then said mixture material is directly gone back
Original-mill ore magnetic selection treatment, obtains cupric 0.6wt%, the cupric iron powder of iron content 92wt%；Then cupric iron powder is delivered into fine grinding dress
Putting carries out fine grinding treatment, obtains cupric thin iron powder of the particle diameter less than 74 microns；Then by the thin iron powder of above-mentioned cupric, ammoniacal liquor and dioxy
Change carbon is delivered to and carried out in stirred leaching tank ammonia leaching reaction, and ammonia leaching condition is：Ammoniacal liquor mass concentration is 3%, and carbon dioxide quality is dense
Degree is (with (NH4)2CO3Meter) it is 4%, liquid-solid ratio is 6:1, ammonia leaching temperature is 45 degrees Celsius, and the time is 1h, after reaction terminates, is carried out
Separation of solid and liquid, obtains iron powder and cupric ammonia leaching solution, and TFe contains 93.5wt% in iron powder, and Cu contains 0.04wt%, and iron powder can be as excellent
The steelmaking feed of matter carbon steel, copper is main with Cu in cupric ammonia leaching solution2(NH3)4CO3Form is present；Then by above-mentioned containing cuprammonium leaching
Liquid delivers to destilling tower and carries out distillation treatment with air, obtains carbon dioxide, ammonia and cupric oxide, and the grade of cupric oxide is
98.5%；The ammonia of gained is finally obtained ammoniacal liquor through water absorption plant, is back to together with the carbon dioxide obtained by destilling tower
Used as raw material in stirred leaching tank, the rate of recovery of whole technique copper is up to 99%.
Embodiment 3
By domestic certain company's copper ashes with reduction coal, additive according to mass ratio 100：20：15 are mixed, wherein, copper ashes
Middle TFe contains 45wt%, and Cu contains 0.55wt%, obtains mixed material；Said mixture material is then directly carried out reduction-grinding ore deposit magnetic
Choosing is processed, and obtains cupric 0.8wt%, the cupric iron powder of iron content 95wt%；Then cupric iron powder is delivered into fine grinding device is carried out carefully
Mill treatment, obtains cupric thin iron powder of the particle diameter less than 74 microns；Then the thin iron powder of above-mentioned cupric, ammoniacal liquor and carbon dioxide are delivered to
Ammonia leaching reaction is carried out in stirred leaching tank, ammonia leaching condition is：Ammoniacal liquor mass concentration is 6%, carbon dioxide mass concentration (with
(NH4)2CO3Meter) it is 5%, liquid-solid ratio is 3:1, ammonia leaching temperature is 50 degrees Celsius, and the time is 30min, after reaction terminates, consolidate
Liquid is separated, and obtains iron powder and cupric ammonia leaching solution, and TFe contains 94wt% in iron powder, and Cu contains 0.03wt%, and iron powder can be as high quality carbon
The steelmaking feed of plain steel, copper is main with Cu in cupric ammonia leaching solution2(NH3)4CO3Form is present；Then by above-mentioned cupric ammonia leaching solution with
Air delivers to destilling tower and carries out distillation treatment, obtains carbon dioxide, ammonia and cupric oxide, and the grade of cupric oxide is 99%；Finally
The ammonia of gained is obtained ammoniacal liquor through water absorption plant, is back in stirred leaching tank together with the carbon dioxide obtained by destilling tower
Used as raw material, the rate of recovery of whole technique copper is up to 99.5%.
Embodiment 4
By domestic certain company's nickel slag with reduction coal, additive according to mass ratio 100：30：10 are mixed, wherein, copper ashes
Middle TFe contains 40wt%, and Cu contains 0.85wt%, obtains mixed material；Said mixture material is then directly carried out reduction-grinding ore deposit magnetic
Choosing is processed, and obtains cupric 1.0wt%, the cupric iron powder of iron content 93.5wt%；Then cupric iron powder is delivered into fine grinding device is carried out
Fine grinding is processed, and obtains cupric thin iron powder of the particle diameter less than 74 microns；Then the thin iron powder of above-mentioned cupric, ammoniacal liquor and carbon dioxide are sent
Ammonia leaching reaction is carried out in stirred leaching tank, ammonia leaching condition is：Ammoniacal liquor mass concentration is 10%, carbon dioxide mass concentration (with
(NH4)2CO3Meter) it is 6%, liquid-solid ratio is 1:1, ammonia leaching temperature is 50 degrees Celsius, and the time is 10min, after reaction terminates, consolidate
Liquid is separated, and obtains iron powder and cupric ammonia leaching solution, and TFe contains 96wt% in iron powder, and Cu contains 0.01wt%, and iron powder can be as high quality carbon
The steelmaking feed of plain steel, copper is main with Cu in cupric ammonia leaching solution2(NH3)4CO3Form is present；Then by above-mentioned cupric ammonia leaching solution with
Air delivers to destilling tower and carries out distillation treatment, obtains carbon dioxide, ammonia and cupric oxide, and the grade of cupric oxide is 99.5%；Most
The ammonia of gained is obtained ammoniacal liquor through water absorption plant afterwards, stirred leaching tank is back to together with the carbon dioxide obtained by destilling tower
Middle to be used as raw material, the rate of recovery of whole technique copper is up to 99.7%.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means to combine specific features, structure, material or spy that the embodiment or example are described
Point is contained at least one embodiment of the invention or example.In this manual, to the schematic representation of above-mentioned term not
Identical embodiment or example must be directed to.And, the specific features of description, structure, material or feature can be with office
Combined in an appropriate manner in one or more embodiments or example.Additionally, in the case of not conflicting, the skill of this area
Art personnel can be tied the feature of the different embodiments or example described in this specification and different embodiments or example
Close and combine.
Although embodiments of the invention have been shown and described above, it is to be understood that above-described embodiment is example
Property, it is impossible to limitation of the present invention is interpreted as, one of ordinary skill in the art within the scope of the invention can be to above-mentioned
Embodiment is changed, changes, replacing and modification.
Claims (10)
1. it is a kind of process metallurgical slag system, the metallurgical slag include copper ashes and nickel slag at least one, it is characterised in that institute
The system of stating includes：
There is mixing arrangement, the mixing arrangement metallurgical slag entrance, reducing agent entrance, additive entrance and mixed material to export；
Reduction-grinding ore deposit concentration equipment, the reduction-grinding ore deposit concentration equipment has mixed material entrance, the outlet of cupric iron powder and tail
Slag is exported, and the mixed material entrance is connected with mixed material outlet；
There is fine grinding device, the fine grinding device cupric iron powder entrance and the thin iron powder of cupric to export, the cupric iron powder entrance with
The cupric iron powder outlet is connected；
Ammonia bath unit, the ammonia bath unit have the thin iron powder entrance of cupric, ammonia inlet, carbon dioxide entrance, iron powder outlet and
Cupric ammonia leaching solution is exported, and the thin iron powder entrance of cupric is connected with the thin iron powder outlet of the cupric；
Ammonia steaming device, the ammonia steaming device have cupric ammonia leaching solution entrance, air intake, carbon dioxide outlet, ammonia outlet and
Cupric oxide is exported, and the outlet of the cupric ammonia leaching solution entrance and the cupric ammonia leaching solution is connected, the carbon dioxide outlet with it is described
Carbon dioxide entrance is connected.
2. system according to claim 1, it is characterised in that further include：
There is water absorption plant, the water absorption plant ammonia entrance and ammoniacal liquor to export, and the ammonia entrance goes out with the ammonia
Mouth is connected, and the ammoniacal liquor outlet is connected with the ammonia inlet.
3. system according to claim 1 and 2, it is characterised in that the ammonia bath unit is stirred leaching tank.
4. system according to claim 1 and 2, it is characterised in that the ammonia steaming device is destilling tower.
5. the method that the system any one of a kind of use claim 1-4 processes metallurgical slag, the metallurgical slag includes copper
At least one in slag and nickel slag, it is characterised in that including：
(1) metallurgical slag, reducing agent and additive are supplied into the mixing arrangement and is mixed, to obtain mixture
Material；
(2) supplying into the reduction-grinding ore deposit concentration equipment mixed material carries out reduction-grinding ore deposit treatment, to obtain
Cupric iron powder and tailings；
(3) supply the cupric iron powder carries out fine grinding treatment into the fine grinding device, to obtain the thin iron powder of cupric；
(4) supplying into the ammonia bath unit the thin iron powder of the cupric, ammoniacal liquor and carbon dioxide carries out ammonia leaching treatment, so as to
To iron powder and cupric ammonia leaching solution；
(5) supplying the cupric ammonia leaching solution and air carries out ammonia still process treatment into the ammonia steaming device, to obtain titanium dioxide
Carbon, ammonia and cupric oxide, and by the ammonia bath unit in the carbon dioxide return to step (4).
6. method according to claim 5, it is characterised in that further include：
(6) ammonia that step (5) is obtained is supplied into the water absorption plant, to obtain ammoniacal liquor, and by the ammoniacal liquor
It is back to the ammonia bath unit in step (4).
7. the method according to claim 5 or 6, it is characterised in that in step (1), copper content is in the metallurgical slag
0.15~0.85wt%, all iron content is 35~45wt%；
It is optional, according to mass ratio it is 100 by the metallurgical slag, the reducing agent and the additive：(10~30)：(3~
15) mixed.
8. method according to claim 7, it is characterised in that in step (2), copper content is in the cupric iron powder
0.4~1wt%, iron content is 90~95wt%；
Optional, in step (3), the particle diameter of the thin iron powder of cupric is not more than 74 microns.
9. the method according to claim 5 or 6, it is characterised in that in step (4), the ammonia leaching processing procedure ammonia leaching
Ammoniacal liquor mass concentration is 1~10% in liquid, and carbon dioxide mass concentration is 2~6%.
10. the method according to claim 5 or 6, it is characterised in that in step (4), liquid-solid ratio in the ammonia leaching treatment
It is (1~10):1, temperature is 40~50 degrees Celsius, and the time is not less than 10min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710186513.XA CN106834723A (en) | 2017-03-24 | 2017-03-24 | The system and method for processing metallurgical slag |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710186513.XA CN106834723A (en) | 2017-03-24 | 2017-03-24 | The system and method for processing metallurgical slag |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106834723A true CN106834723A (en) | 2017-06-13 |
Family
ID=59130645
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710186513.XA Pending CN106834723A (en) | 2017-03-24 | 2017-03-24 | The system and method for processing metallurgical slag |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106834723A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110629032A (en) * | 2019-09-16 | 2019-12-31 | 厦门钨业股份有限公司 | Method and system for extracting cobalt and nickel from tungsten waste recovery slag |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1101679A (en) * | 1993-10-11 | 1995-04-19 | 郑庆国 | Technology for producing ammonia cupric sulfate |
| CN101357809A (en) * | 2007-08-02 | 2009-02-04 | 蔡敏行 | Zero sludge and resource handling arrangement and recovery method of heavy metal waste water |
| CN101423897A (en) * | 2008-11-26 | 2009-05-06 | 东北大学 | Method for extracting nickel oxide from lateritic nickel |
| CN101525143A (en) * | 2009-01-09 | 2009-09-09 | 东北大学 | Method for preparing magnesia, silicon dioxide and nickel oxide products from lateritic nickel ore |
| CN102020307A (en) * | 2010-10-15 | 2011-04-20 | 张家港凯纳信息技术有限公司 | Disposal method of organic silicon copper-containing waste catalyst |
| CN102080159A (en) * | 2011-01-07 | 2011-06-01 | 东北大学 | Method for comprehensive exploitation and utilization of silicon, magnesium, iron, and nickel in laterite-nickel ore |
| CN102614885A (en) * | 2012-03-13 | 2012-08-01 | 中国科学院过程工程研究所 | Method for preparing composite copper catalyst by recycling organic silicon waste contacts |
| CN104326503A (en) * | 2014-10-17 | 2015-02-04 | 金川集团股份有限公司 | Active copper oxide powder preparation method |
| CN106086469A (en) * | 2016-08-09 | 2016-11-09 | 江苏省冶金设计院有限公司 | A kind of method and system utilizing lateritic nickel ore to extract nickel oxide |
| CN106086467A (en) * | 2016-08-09 | 2016-11-09 | 江苏省冶金设计院有限公司 | A kind of method and system utilizing lateritic nickel ore to extract nickel oxide |
-
2017
- 2017-03-24 CN CN201710186513.XA patent/CN106834723A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1101679A (en) * | 1993-10-11 | 1995-04-19 | 郑庆国 | Technology for producing ammonia cupric sulfate |
| CN101357809A (en) * | 2007-08-02 | 2009-02-04 | 蔡敏行 | Zero sludge and resource handling arrangement and recovery method of heavy metal waste water |
| CN101423897A (en) * | 2008-11-26 | 2009-05-06 | 东北大学 | Method for extracting nickel oxide from lateritic nickel |
| CN101525143A (en) * | 2009-01-09 | 2009-09-09 | 东北大学 | Method for preparing magnesia, silicon dioxide and nickel oxide products from lateritic nickel ore |
| CN102020307A (en) * | 2010-10-15 | 2011-04-20 | 张家港凯纳信息技术有限公司 | Disposal method of organic silicon copper-containing waste catalyst |
| CN102080159A (en) * | 2011-01-07 | 2011-06-01 | 东北大学 | Method for comprehensive exploitation and utilization of silicon, magnesium, iron, and nickel in laterite-nickel ore |
| CN102614885A (en) * | 2012-03-13 | 2012-08-01 | 中国科学院过程工程研究所 | Method for preparing composite copper catalyst by recycling organic silicon waste contacts |
| CN104326503A (en) * | 2014-10-17 | 2015-02-04 | 金川集团股份有限公司 | Active copper oxide powder preparation method |
| CN106086469A (en) * | 2016-08-09 | 2016-11-09 | 江苏省冶金设计院有限公司 | A kind of method and system utilizing lateritic nickel ore to extract nickel oxide |
| CN106086467A (en) * | 2016-08-09 | 2016-11-09 | 江苏省冶金设计院有限公司 | A kind of method and system utilizing lateritic nickel ore to extract nickel oxide |
Non-Patent Citations (1)
| Title |
|---|
| 沈旭主编: "《化学选矿技术》", 31 July 2011, 冶金工业出版社 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110629032A (en) * | 2019-09-16 | 2019-12-31 | 厦门钨业股份有限公司 | Method and system for extracting cobalt and nickel from tungsten waste recovery slag |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100497670C (en) | Process of fast reducing carbon-containing red mud nickel ore pellet to enriching nickel in a bottom rotating furnace | |
| CN100478461C (en) | Combined bottom rotating furnace-electric furnace process for treating red mud nickel ore to produce ferronickel | |
| CN101073790B (en) | Reduction-mill concentration treatment for different-type red-clay nickel mine | |
| CN100395354C (en) | Comprehensive recovering process of multimetal sulfide mineral | |
| Zhou et al. | Extraction and separation of copper and iron from copper smelting slag: A review | |
| CN101413055B (en) | Process for directly preparing nickel-iron alloy powder from laterite-nickel ore | |
| He et al. | Pressure leaching of high silica Pb–Zn oxide ore in sulfuric acid medium | |
| US10174403B2 (en) | Methods and apparatus for metal recovery from slag | |
| CN111378851A (en) | System and method for treating laterite-nickel ore | |
| CN102199710B (en) | Method for extracting and separating nickel and molybdenum from nickel-molybdenum-containing coal gangue | |
| CN109534476A (en) | A kind of method that copper ashes handles arsenic in nonferrous smelting waste acid | |
| CN110106433B (en) | Comprehensive utilization method of molten depleted copper slag and zinc slag | |
| CN206721311U (en) | The system for handling metallurgical slag | |
| CN110699554A (en) | Method for producing vanadium-rich iron from vanadium-rich slag | |
| CN106834728A (en) | Process the method and system of vanadium chromium slag | |
| CN105198008B (en) | The method and system of carbonyl nickel powder is prepared using lateritic nickel ore | |
| CN109477161A (en) | The method of the nickeliferous copper sulphide material of continuous converting | |
| Yao et al. | Clean process for vanadium extraction from vanadium-bearing converter slag | |
| CN212247156U (en) | System for handle laterite-nickel ore deposit | |
| CN110564961B (en) | Method for reducing leached hydrocobaltite | |
| CN106834723A (en) | The system and method for processing metallurgical slag | |
| CN206721307U (en) | The system of Treatment of Copper iron powder | |
| CN107022684A (en) | The system and method for handling metallurgical slag | |
| CN206828599U (en) | The system for handling lateritic nickel ore | |
| CN113699368B (en) | Method for extracting low-temperature polymetallic from oxidized minerals by using citric acid |
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 |