CN206721307U - The system of Treatment of Copper iron powder - Google Patents
The system of Treatment of Copper iron powder Download PDFInfo
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- CN206721307U CN206721307U CN201720302117.4U CN201720302117U CN206721307U CN 206721307 U CN206721307 U CN 206721307U CN 201720302117 U CN201720302117 U CN 201720302117U CN 206721307 U CN206721307 U CN 206721307U
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Abstract
The utility model proposes a kind of system of Treatment of Copper iron powder, the system includes：Fine grinding device, the fine grinding device have cupric iron powder entrance and the thin iron powder outlet of cupric；Ammonia bath unit, the ammonia bath unit have the thin iron powder entrance of cupric, ammonia inlet, carbon dioxide entrance, iron powder outlet and the outlet of cupric ammonia leaching solution, and the thin iron powder entrance of the cupric iron powder outlet thin with the cupric is connected；Ammonia steaming device, the ammonia steaming device has cupric ammonia leaching solution entrance, air intake, carbon dioxide outlet, ammonia outlet and cupric oxide outlet, the cupric ammonia leaching solution entrance is connected with cupric ammonia leaching solution outlet, and the carbon dioxide outlet is connected with the carbon dioxide entrance.The system is soaked using ammonia separates the copper in cupric iron powder and iron, and reclaimed copper using ammonia still process method, the purity of metal iron powder is improved, the rate of recovery of copper is not less than 98.5%, TFe content is not less than 91.5wt% in iron powder, and Cu content is not more than 0.05wt%.
Description
Technical field
The utility model belongs to field of hydrometallurgy, specifically, the system that the utility model is related to Treatment of Copper iron powder.
Background technology
Cupric iron powder is copper ashes or nickel slag passes through the iron-containing product that direct-reduction-mill ore magnetic selection technique obtains, the production of such iron
Product can be used as the raw material of electric furnace steel making or 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, typically require that copper content is less than 0.25wt%,
Thus this cupric iron powder can only be used as dispensing or be sold at a discount.During as weathering steel raw material, due to by the market demand
Limitation, product advantage also unobvious.
Copper is difficult to realize using conventional method for cupric iron powder, iron efficiently separates, thus iron product quality is low, product
Value is limited.In the prior art, excessive quantifier elimination only is carried out to the decopper(ing) technology of molten steel.But up to the present, do not have also
A kind of gratifying practical decopper(ing) technology.These methods mostly because the removing inferior capabilities to copper or condition it is too harsh and
Can not further it develop.When such as using fusing separation, small-sized scrap of the processing containing a large amount of exposure copper is only applicable to；Using gasification point
During from method, then because the problems such as process procedure is more, gaseous contamination environment is difficult to large-scale promotion；During using vacuum separation method, then
Molten steel decopper(ing) is only applicable to, and the problems such as iron loss is big, removing speed is slow be present, thus is difficult to large-scale industrial application.
Therefore, the technology of existing Treatment of Copper iron powder is further improved.
Utility model content
The utility model is intended to one of technical problem at least solving in correlation technique to a certain extent.Therefore, this reality
It is to propose a kind of system of Treatment of Copper iron powder with a new purpose.The system is soaked the copper in cupric iron powder using ammonia
Separate with iron, and reclaimed copper using ammonia still process method, improve the purity of metal iron powder, the rate of recovery of copper is not less than
98.5%, TFe content is not less than 91.5wt% in gained metal iron powder, and Cu content is not more than 0.05wt%.
In one side of the present utility model, the utility model proposes a kind of system of Treatment of Copper iron powder, according to this
The embodiment of utility model, the system include：
Fine grinding device, the fine grinding device have cupric iron powder entrance and the thin iron powder outlet of cupric；
There is the thin iron powder entrance of cupric, ammonia inlet, carbon dioxide entrance, iron powder to go out for ammonia bath unit, the ammonia bath unit
Mouth and the outlet of cupric ammonia leaching solution, the thin iron powder entrance of the cupric iron powder outlet thin with the cupric are connected；
There is cupric ammonia leaching solution entrance, air intake, carbon dioxide outlet, ammonia to go out for ammonia steaming device, the ammonia steaming device
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.
According to the system of the Treatment of Copper iron powder of the utility model embodiment, by the way that cupric iron powder is finely ground into the thin iron of cupric
Powder, the surface area of the thin iron powder of cupric can be dramatically increased, be advantageous to improve the efficiency of follow-up ammonia leaching processing and ammonia still process processing, improve copper
Rate of dissolution, while save energy consumption；Then the thin iron powder of above-mentioned cupric is handled using ammoniacal liquor and carbon dioxide, because of ammoniacal liquor
Solution can dissolve Cu oxide and metallic copper in the presence of having carbon dioxide (or ammonium carbonate), obtain containing containing ammonium carbonate is cuprous
Cuprammonium immersion liquid, and iron exists still in the form of metallic iron, so as to remove the copper in iron power removing；And ammonium carbonate is cuprous is having air to deposit
When can be oxidized, the ammonium carbonate salts of copper are generated, and ammonium carbonate salts can further dissolve metallic copper, in this way, can be thin by cupric
Copper dissolution in iron powder is abundant, and after ammonia still process is handled, ammonium carbonate is cuprous to react with oxygen, generation cupric oxide, ammonia and two
Carbonoxide, so as to realize the recycling of copper, caused ammonia and carbon dioxide can be back to ammonia bath unit, advantageously reduce whole
The cost of raw material of individual system.Thus, the system is soaked using ammonia and separates the copper in cupric iron powder and iron, and will using ammonia still process method
Copper is reclaimed, and improves the purity of metal iron powder, the rate of recovery of copper is not less than 98.5%, and TFe content is not less than in iron powder
91.5wt%, Cu content are not more than 0.05wt%, and production cost is relatively low, technological process is simple, better economic benefit.
In addition, according to the system of the Treatment of Copper iron powder of the utility model above-described embodiment, can also have following additional
Technical characteristic：
Optional, the system of above-mentioned Treatment of Copper iron powder further comprises：Water absorption plant, the water absorption plant have
Ammonia entrance and ammoniacal liquor outlet, the ammonia entrance are connected with the ammonia outlet, the ammoniacal liquor outlet and the ammonia inlet
It is connected.Thus, the Ammonia recovery obtained by ammonia steaming device is utilized, reduces the cost of raw material of system, improve the economy of system.
Optional, the ammonia bath unit is stirred leaching tank.Thus, be advantageous to improve the dissolving speed of copper in the thin iron powder of cupric
Rate.
Optional, the ammonia steaming device is destilling tower.Thus, be advantageous to improve the efficiency of ammonia still process processing, while reclaim ammonia
Gas and carbon dioxide.
Additional aspect and advantage of the present utility model will be set forth in part in the description, partly by from following description
In become obvious, or by it is of the present utility model practice recognize.
Brief description of the drawings
Of the present utility model above-mentioned and/or additional aspect and advantage will in the description from combination accompanying drawings below to embodiment
Become obvious and be readily appreciated that, wherein：
Fig. 1 is the system structure diagram according to the Treatment of Copper iron powder of the utility model one embodiment；
Fig. 2 is the system structure diagram according to the Treatment of Copper iron powder of the utility model further embodiment；
Fig. 3 is the method stream according to the system Treatment of Copper iron powder of the Treatment of Copper iron powder of the utility model one embodiment
Journey schematic diagram；
Fig. 4 is the method according to the system Treatment of Copper iron powder of the Treatment of Copper iron powder of the utility model further embodiment
Schematic flow sheet.
Embodiment
Embodiment of the present utility model is described below in detail, the example of the embodiment is shown in the drawings, wherein from beginning
Same or similar element is represented to same or similar label eventually or there is the element of same or like function.Below by ginseng
The embodiment for examining accompanying drawing description is exemplary, it is intended to for explaining the utility model, and it is not intended that to the utility model
Limitation.
In the utility model, unless otherwise clearly defined and limited, term " installation ", " connected ", " connection ", " Gu
It is fixed " etc. term should be interpreted broadly, for example, it may be fixedly connected or be detachably connected, or integrally；Can be
Mechanically connect or electrically connect；Can be joined directly together, can also be indirectly connected by intermediary, can be two
The connection of element internal or the interaction relationship of two elements, limited unless otherwise clear and definite.For the common skill of this area
For art personnel, concrete meaning of the above-mentioned term in the utility model can be understood as the case may be.
In one side of the present utility model, the utility model proposes a kind of system of Treatment of Copper iron powder, according to this
The embodiment of utility model, with reference to figure 1, the system includes：Fine grinding device 100, ammonia bath unit 200 and ammonia steaming device 300.
According to embodiment of the present utility model, fine grinding device 100 has cupric iron powder entrance 101 and the thin iron powder outlet of cupric
102, and suitable for cupric iron powder is carried out into fine grinding processing, to obtain the thin iron powder of cupric.Inventor has found, by by cupric iron powder
The thin iron powder of cupric is finely ground to, the surface area of the thin iron powder of cupric can be dramatically increased, is advantageous to improve at follow-up ammonia leaching processing and ammonia still process
The efficiency of reason, improves the rate of dissolution of copper, while saves energy consumption.It should be noted that fine grinding device is not particularly restricted, this
Art personnel can be selected according to being actually needed, such as can be ball mill.Cupric iron powder can be copper ashes or nickel
Slag passes through the iron-containing product that direct-reduction-mill ore magnetic selection technique obtains.
According to one embodiment of the present utility model, the content of copper and iron is not particularly restricted in cupric iron powder, ability
Field technique personnel can be selected according to being actually needed, according to a specific embodiment of the present utility model, in cupric iron powder
Copper content can be 0.4~1wt%, and iron content can be 90~95wt%.Inventor has found, if iron content in cupric iron powder
Too high or copper content is too low (iron content close to 100wt% or copper content close to 0wt%), technically just without necessity of copper removal；
If iron content is too low, then means that remaining impurity content is too high in cupric iron powder, these impurity can have a strong impact on iron product
With the quality of oxidation copper products.Inventor has found that, when copper content is 0.4~1wt% in cupric iron powder, iron contains by lot of experiments
Measure for 90~95wt% when, copper and iron good separating effect may be such that using technology of the present utility model, the iron product finally given and
Cupric oxide product grade is high.
According to further embodiment of the present utility model, the particle diameter of the thin iron powder of cupric is not particularly restricted, this area skill
Art personnel can be selected according to being actually needed, according to a specific embodiment of the present utility model, the grain of the thin iron powder of cupric
Footpath can be not more than 74 microns.Inventor has found, compared to other particle diameters, it is outer can to ensure that copper is sufficiently exposed under the particle diameter
Portion, it is had sufficiently large contact area with ammonia leaching solution, be advantageous to improve reaction rate.
According to embodiment of the present utility model, ammonia bath unit 200 have the thin iron powder entrance 201 of cupric, ammonia inlet 202,
Carbon dioxide entrance 203, iron powder outlet 204 and cupric ammonia leaching solution outlet 205, the thin iron powder entrance 201 of cupric and the thin iron powder of cupric
Outlet 102 is connected, and suitable for the thin iron powder of cupric, ammoniacal liquor and carbon dioxide are carried out into ammonia leaching processing, to obtain iron powder and cupric
Ammonia leaching solution.Inventor has found, the thin iron powder of above-mentioned cupric is handled by using ammoniacal liquor and carbon dioxide, because ammonia spirit exists
All Cu oxide and metallic copper can be dissolved in the presence of carbon dioxide (or ammonium carbonate) by having, and obtain containing containing ammonium carbonate is cuprous
Cuprammonium immersion liquid, and iron exists still in the form of metallic iron, so as to obtain the iron powder of high-purity.The primary chemical occurred in the device is anti-
The reaction equation answered is：
CuO+2NH4OH+(NH4)2CO3=Cu (NH3)4CO3+3H2O (1)
Cu(NH3)4CO3+ Cu=Cu2(NH3)4CO3 (2)
According to one embodiment of the present utility model, ammonia bath unit is not particularly restricted, and those skilled in the art can be with
Selected according to being actually needed, according to a specific embodiment of the present utility model, ammonia bath unit can be stirred leaching tank.
Thus, be advantageous to improve the rate of dissolution of copper in the thin iron powder of cupric.
According to further embodiment of the present utility model, ammonia soaks ammoniacal liquor mass concentration and titanium dioxide in processing procedure ammonia leaching solution
Carbon mass concentration is not particularly restricted, and those skilled in the art can be selected according to being actually needed, new according to this practicality
One specific embodiment of type, it can be 1~10% that ammonia, which soaks ammoniacal liquor mass concentration in processing procedure ammonia leaching solution, carbon dioxide quality
Concentration can be 2~6%.Inventor has found that ammoniacal liquor mass concentration and carbon dioxide quality are dense in ammonia leaching processing procedure ammonia leaching solution
Spend low, can reduce the Leach reaction speed of copper；If ammoniacal liquor mass concentration is too high, Ammonia valatilization can be caused serious, made
Lost into a large amount of ammonia reagents；Ammoniacal liquor mass concentration can not it is too high on the premise of, unilaterally make carbon dioxide mass concentration too high
The Leach reaction speed of copper can not be improved, can also cause to waste.Inventor had been surprisingly found that by lot of experiments, ammonia in ammonia leaching solution
Water quality concentration is 1~10%, and when carbon dioxide mass concentration is 2~6%, the copper dissolution rate in the thin iron powder of cupric is fast, copper
Iron good separating effect.
According to another embodiment of the present utility model, the condition of ammonia leaching processing is not particularly restricted, art technology
Personnel can be selected according to being actually needed, according to a specific embodiment of the present utility model, liquid-solid ratio in ammonia leaching processing
Can be (1~10):1, temperature can be 40~50 degrees Celsius, and the time can be not less than 10min.Inventor has found, at ammonia leaching
When liquid-solid ratio is too high in reason, the waste of ammonia leaching solution can be caused, and when liquid-solid ratio is too low, then copper dissolution can be caused insufficient, it is unfavorable
In obtaining the iron powder of high-purity.And temperature is too low can have a strong impact on reaction rate for ammonia leaching, temperature is too high, can increase the partial pressure of ammonia
Height, make ammonia loss serious.Inventor has been surprisingly found that the time of ammonia leaching processing is in model described in the utility model by many experiments
It may be such that the copper in the thin iron powder of cupric farthest dissolves when enclosing interior.
According to embodiment of the present utility model, ammonia steaming device 300 have cupric ammonia leaching solution entrance 301, air intake 302,
Carbon dioxide outlet 303, ammonia outlet 304 and cupric oxide outlet 305, cupric ammonia leaching solution entrance 301 exports with cupric ammonia leaching solution
205 are connected, and carbon dioxide outlet 303 is connected with carbon dioxide entrance 203, and suitable for cupric ammonia leaching solution and air are carried out into ammonia still process
Processing, to obtain carbon dioxide, ammonia and cupric oxide, and carbon dioxide is returned into ammonia bath unit.Inventor has found, is soaked through ammonia
The obtained cuprous ammonium carbonate salts that can be oxidized in the presence of having air, generate copper of ammonium carbonate are handled, and ammonium carbonate salts can enter
One step dissolves metallic copper, in this way, can be abundant by the copper dissolution in the thin iron powder of cupric, after ammonia still process is handled, ammonium carbonate be cuprous and oxygen
Gas reacts, and generation cupric oxide, ammonia and carbon dioxide, in this way, can remove the copper in the thin iron powder of cupric, significantly improves iron
The grade of powder, producible ammonia and carbon dioxide can be back to ammonia bath unit, advantageously reduce the raw material of whole system into
This.The reaction equation of the main chemical reactions of generation is in the device：
Cu2(NH3)4CO3+(NH4)2CO3+2NH4OH+0.5O2=2Cu (NH3)4CO3+3H2O (3)
2Cu2(NH3)4CO3+O2=4CuO+8NH3+2CO2 (4)
According to one embodiment of the present utility model, ammonia steaming device is not particularly restricted, and those skilled in the art can be with
Selected according to being actually needed, according to a specific embodiment of the present utility model, ammonia steaming device can be destilling tower.By
This, is advantageous to improve the efficiency of ammonia still process processing, while reclaims 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 tower in suspended state, carry out mass-and heat-transfer rapidly with the steam stream for being passed through tower bottom and from bottom to top moving, make
Volatile NH3And CO2Become steam state to discharge from tower top, and cupric ammine complex Cu2(NH3)4CO3Then thermally decompose, copper is with oxygen
Change copper CuO Precipitations, the CuO separated out under suspended state because its proportion is larger and under fall on bottom of towe and discharged with raffinate.
According to the system of the Treatment of Copper iron powder of the utility model embodiment, by the way that cupric iron powder is finely ground into the thin iron of cupric
Powder, the surface area of the thin iron powder of cupric can be dramatically increased, be advantageous to improve the efficiency of follow-up ammonia leaching processing and ammonia still process processing, improve copper
Rate of dissolution, while save energy consumption；Then the thin iron powder of above-mentioned cupric is handled using ammoniacal liquor and carbon dioxide, because of ammoniacal liquor
Solution can dissolve Cu oxide and metallic copper in the presence of having carbon dioxide (or ammonium carbonate), obtain containing containing ammonium carbonate is cuprous
Cuprammonium immersion liquid, and iron exists still in the form of metallic iron, so as to remove the copper in iron power removing；And ammonium carbonate is cuprous is having air to deposit
When can be oxidized, the ammonium carbonate salts of copper are generated, and ammonium carbonate salts can further dissolve metallic copper, in this way, can be thin by cupric
Copper dissolution in iron powder is abundant, and after ammonia still process is handled, ammonium carbonate is cuprous to react with oxygen, generation cupric oxide, ammonia and two
Carbonoxide, so as to realize the recycling of copper, caused ammonia and carbon dioxide can be back to ammonia bath unit, advantageously reduce whole
The cost of raw material of individual system.Thus, the system is soaked using ammonia and separates the copper in cupric iron powder and iron, and will using ammonia still process method
Copper is reclaimed, and improves the purity of metal iron powder, the rate of recovery of copper is not less than 98.5%, and TFe content is not less than in iron powder
91.5wt%, Cu content are not more than 0.05wt%, and production cost is relatively low, technological process is simple, better economic benefit.
According to the system of the Treatment of Copper iron powder of the utility model above-described embodiment, with reference to figure 2, the system is further wrapped
Include：Water absorption plant 400.
According to embodiment of the present utility model, water absorption plant 400 has ammonia entrance 401 and ammoniacal liquor outlet 402, ammonia
Entrance 401 is connected with ammonia outlet 304, and ammoniacal liquor outlet 402 is connected with ammonia inlet 202 and the ammonia suitable for ammonia steaming device is obtained
Gas is handled, and to obtain ammoniacal liquor, and ammoniacal liquor is back into ammonia bath unit.Thus, ammonia caused by ammonia steaming device can be filled
Divide recovery, 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, drop
Low energy consumption, improve the economy of system.
In order to facilitate understanding, below with reference to Fig. 3-4 pairs of systems using the Treatment of Copper iron powder of the utility model embodiment
The method of Treatment of Copper iron powder is described in detail, and according to embodiment of the present utility model, with reference to figure 3, this method includes：
S100：Cupric iron powder is supplied into fine grinding device and carries out fine grinding processing
In the step, cupric iron powder is supplied into fine grinding device and carries out fine grinding processing, to obtain the thin iron powder of cupric.Hair
A person of good sense has found, by the way that cupric iron powder is finely ground into the thin iron powder of cupric, can dramatically increase the surface area of the thin iron powder of cupric, be advantageous to carry
The efficiency of high follow-up ammonia leaching processing and ammonia still process processing, improves the rate of dissolution of copper, while save energy consumption.It is it should be noted that thin
Mill apparatus is not particularly restricted, and those skilled in the art can be selected according to being actually needed, such as can be ball mill.
Cupric iron powder can be copper ashes or nickel slag passes through the iron-containing product that direct-reduction-mill ore magnetic selection technique obtains.
According to one embodiment of the present utility model, the content of copper and iron is not particularly restricted in cupric iron powder, ability
Field technique personnel can be selected according to being actually needed, according to a specific embodiment of the present utility model, in cupric iron powder
Copper content can be 0.4~1wt%, and iron content can be 90~95wt%.Inventor has found, if iron content in cupric iron powder
Too high or copper content is too low (iron content close to 100wt% or copper content close to 0wt%), technically just without necessity of copper removal；
If iron content is too low, then means that remaining impurity content is too high in cupric iron powder, these impurity can have a strong impact on iron product
With the quality of oxidation copper products.Inventor has found that, when copper content is 0.4~1wt% in cupric iron powder, iron contains by lot of experiments
Measure for 90~95wt% when, copper and iron good separating effect may be such that using technology of the present utility model, the iron product finally given and
Cupric oxide product grade is high.
According to further embodiment of the present utility model, the particle diameter of the thin iron powder of cupric is not particularly restricted, this area skill
Art personnel can be selected according to being actually needed, according to a specific embodiment of the present utility model, the grain of the thin iron powder of cupric
Footpath can be not more than 74 microns.Inventor has found, compared to other particle diameters, it is outer can to ensure that copper is sufficiently exposed under the particle diameter
Portion, it is had sufficiently large contact area with ammonia leaching solution, be advantageous to improve reaction rate.
S200：The thin iron powder of cupric, ammoniacal liquor and carbon dioxide are supplied into ammonia bath unit and carry out ammonia leaching processing
In the step, the thin iron powder of cupric, ammoniacal liquor and carbon dioxide are supplied into ammonia bath unit and carry out ammonia leaching processing, so as to
Obtain iron powder and cupric ammonia leaching solution.Inventor find, by using ammoniacal liquor and carbon dioxide to the thin iron powder of above-mentioned cupric at
Reason, because ammonia spirit can dissolve all Cu oxide and metallic copper in the presence of having carbon dioxide (or ammonium carbonate), is contained
There is the cupric ammonia leaching solution that ammonium carbonate is cuprous, and iron exists still in the form of metallic iron, so as to obtain the iron powder of high-purity.In the device
The reaction equation of the main chemical reactions of generation is：
CuO+2NH4OH+(NH4)2CO3=Cu (NH3)4CO3+3H2O (1)
Cu(NH3)4CO3+ Cu=Cu2(NH3)4CO3 (2)
According to one embodiment of the present utility model, ammonia soaks ammoniacal liquor mass concentration and carbon dioxide in processing procedure ammonia leaching solution
Mass concentration is not particularly restricted, and those skilled in the art can be selected according to being actually needed, according to the utility model
A specific embodiment, ammonia leaching processing procedure ammonia leaching solution in ammoniacal liquor mass concentration can be 1~10%, carbon dioxide quality is dense
Degree can be 2~6%.Inventor has found that ammonia soaks ammoniacal liquor mass concentration and carbon dioxide mass concentration in processing procedure ammonia leaching solution
It is too low, it can reduce the Leach reaction speed of copper；If ammoniacal liquor mass concentration is too high, Ammonia valatilization can be caused serious, caused
A large amount of ammonia reagent losses；Ammoniacal liquor mass concentration can not it is too high on the premise of, unilaterally make carbon dioxide mass concentration too high simultaneously
The Leach reaction speed of copper can not be improved, can also cause to waste.Inventor had been surprisingly found that by lot of experiments, ammoniacal liquor in ammonia leaching solution
Mass concentration is 1~10%, and 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 further embodiment of the present utility model, the condition of ammonia leaching processing is not particularly restricted, art technology
Personnel can be selected according to being actually needed, according to a specific embodiment of the present utility model, liquid-solid ratio in ammonia leaching processing
Can be (1~10):1, temperature can be 40~50 degrees Celsius, and the time can be not less than 10min.Inventor has found, at ammonia leaching
When liquid-solid ratio is too high in reason, the waste of ammonia leaching solution can be caused, and when liquid-solid ratio is too low, then copper dissolution can be caused insufficient, it is unfavorable
In obtaining the iron powder of high-purity.And temperature is too low can have a strong impact on reaction rate for ammonia leaching, temperature is too high, can increase the partial pressure of ammonia
Height, make ammonia loss serious.Inventor has been surprisingly found that the time of ammonia leaching processing is in model described in the utility model by many experiments
It may be such that the copper in the thin iron powder of cupric farthest dissolves when enclosing interior.
S300：Cupric ammonia leaching solution and air are supplied into ammonia steaming device and carry out ammonia still process processing
In the step, cupric ammonia leaching solution and air are supplied into ammonia steaming device and carry out ammonia still process processing, to obtain dioxy
Change carbon, ammonia and cupric oxide, and carbon dioxide is returned into the ammonia bath unit in S200.Inventor has found, handles to obtain through ammonia leaching
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 abundant by the copper dissolution in the thin iron powder of cupric, after ammonia still process is handled, ammonium carbonate is cuprous to be occurred instead with oxygen
Should, generation cupric oxide, ammonia and carbon dioxide, in this way, the copper in the thin iron powder of cupric can be removed, significantly improve the product of iron powder
Position, producible ammonia and carbon dioxide can be back to ammonia bath unit, advantageously reduce the cost of raw material of whole system.The dress
The reaction equation for putting the main chemical reactions of interior generation is：
Cu2(NH3)4CO3+(NH4)2CO3+2NH4OH+0.5O2=2Cu (NH3)4CO3+3H2O (3)
2Cu2(NH3)4CO3+O2=4CuO+8NH3+2CO2 (4)
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 tower in suspended state, carry out mass-and heat-transfer rapidly with the steam stream for being passed through tower bottom and from bottom to top moving, make
Volatile NH3And CO2Become steam state to discharge from tower top, and cupric ammine complex Cu2(NH3)4CO3Then thermally decompose, copper is with oxygen
Change copper CuO Precipitations, the CuO separated out under suspended state because its proportion is larger and under fall on bottom of towe and discharged with raffinate.
Using the method for the system Treatment of Copper iron powder of the Treatment of Copper iron powder of the utility model embodiment, by by cupric
Iron powder is finely ground to the thin iron powder of cupric, can dramatically increase the surface area of the thin iron powder of cupric, is advantageous to improve follow-up ammonia leaching processing and steams
The efficiency of ammonia treatment, improves the rate of dissolution of copper, while saves energy consumption；Then it is thin to above-mentioned cupric using ammoniacal liquor and carbon dioxide
Iron powder is handled, and because ammonia spirit can dissolve Cu oxide and metallic copper in the presence of having carbon dioxide (or ammonium carbonate), is obtained
To containing the cuprous cupric ammonia leaching solution of ammonium carbonate, and iron exists still in the form of metallic iron, so as to remove the copper in iron power removing；And
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 gold
Belong to copper, in this way, can be abundant by the copper dissolution in the thin iron powder of cupric, after ammonia still process is handled, ammonium carbonate is cuprous to react with oxygen,
Cupric oxide, ammonia and carbon dioxide are generated, so as to realize the recycling of copper, and caused ammonia and carbon dioxide can be back to
Ammonia bath unit, advantageously reduce the cost of raw material of whole method.Thus, this method soaked using ammonia by the copper in cupric iron powder and
Iron separates, and is reclaimed copper using ammonia still process method, improves the purity of metal iron powder, and the rate of recovery of copper is not less than 98.5%,
TFe content is not less than 91.5wt% in iron powder, and Cu content is not more than 0.05wt%, and production cost is relatively low, technique stream
Journey is simple, better economic benefit.
According to the method for the system Treatment of Copper iron powder of the Treatment of Copper iron powder of the utility model above-described embodiment, reference chart
4, this method further comprises：
S400：The ammonia that S300 is obtained is supplied into water absorption plant
In the step, the ammonia that S300 is obtained is supplied into water absorption plant, to obtain ammoniacal liquor, and ammoniacal liquor is returned
Ammonia bath unit into S200.Thus, ammonia caused by ammonia steaming device 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, reduces energy consumption, improves the economy of system.
Below with reference to specific embodiment, the utility model is described, it is necessary to which explanation is, these embodiments are only
Descriptive, without limiting the utility model in any way.
Embodiment 1
Cupric iron powder is delivered into fine grinding device and carries out fine grinding processing, obtains the thin iron powder of cupric that particle diameter is less than 74 microns, its
In, TFe contains 90wt% in cupric iron powder, and Cu contains 1.0wt%；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 1%, carbon dioxide mass concentration (with
(NH4)2CO3Meter) it is 2%, liquid-solid ratio 10:1, ammonia leaching temperature is 40 degrees Celsius, time 2h, after reaction terminates, carries out solid-liquid
Separation, obtains iron powder and cupric ammonia leaching solution, TFe contains 91.5wt% in iron powder, and Cu contains 0.05wt%, and iron powder can be used as high quality carbon
The steelmaking feed of plain steel, copper is mainly 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 processing, obtains carbon dioxide, ammonia and cupric oxide, the grade of cupric oxide is 98%；Finally
Ammoniacal liquor is made through water absorption plant in the ammonia of gained, is back to together with the carbon dioxide obtained by destilling tower in stirred leaching tank
Used as raw material, the rate of recovery of whole technique copper is up to 98.5%.
Embodiment 2
Cupric iron powder is delivered into fine grinding device and carries out fine grinding processing, obtains the thin iron powder of cupric that particle diameter is less than 74 microns, its
In, TFe contains 92wt% in cupric iron powder, and Cu contains 0.8wt%；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 3%, carbon dioxide mass concentration (with
(NH4)2CO3Meter) it is 4%, liquid-solid ratio 6:1, ammonia leaching temperature is 45 degrees Celsius, time 1h, after reaction terminates, carries out solid-liquid
Separation, obtains iron powder and cupric ammonia leaching solution, TFe contains 93.5wt% in iron powder, and Cu contains 0.04wt%, and iron powder can be used as high quality carbon
The steelmaking feed of plain steel, copper is mainly 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 processing, obtains carbon dioxide, ammonia and cupric oxide, the grade of cupric oxide is 98.5%；Most
Ammoniacal liquor is made through water absorption plant in the ammonia of gained afterwards, stirred leaching tank is back to together with the carbon dioxide obtained by destilling tower
Middle to use as raw material, the rate of recovery of whole technique copper is up to 99%.
Embodiment 3
Cupric iron powder is delivered into fine grinding device and carries out fine grinding processing, obtains the thin iron powder of cupric that particle diameter is less than 74 microns, its
In, TFe contains 92.5wt% in cupric iron powder, and Cu contains 0.6wt%；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 6%, carbon dioxide mass concentration (with
(NH4)2CO3Meter) it is 5%, liquid-solid ratio 3:1, ammonia leaching temperature is 50 degrees Celsius, time 30min, after reaction terminates, consolidate
Liquid separates, and obtains iron powder and cupric ammonia leaching solution, TFe contains 94wt% in iron powder, and Cu contains 0.03wt%, and iron powder can be used as high quality carbon
The steelmaking feed of plain steel, copper is mainly 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 processing, obtains carbon dioxide, ammonia and cupric oxide, the grade of cupric oxide is 99%；Finally
Ammoniacal liquor is made through water absorption plant in the ammonia of gained, is back to together with the carbon dioxide obtained by destilling tower in stirred leaching tank
Used as raw material, the rate of recovery of whole technique copper is up to 99.5%.
Embodiment 4
Cupric iron powder is delivered into fine grinding device and carries out fine grinding processing, obtains the thin iron powder of cupric that particle diameter is less than 74 microns, its
In, TFe contains 95wt% in cupric iron powder, and Cu contains 0.4wt%；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 10%, carbon dioxide mass concentration (with
(NH4)2CO3Meter) it is 6%, liquid-solid ratio 1:1, ammonia leaching temperature is 50 degrees Celsius, time 10min, after reaction terminates, consolidate
Liquid separates, and obtains iron powder and cupric ammonia leaching solution, TFe contains 96wt% in iron powder, and Cu contains 0.01wt%, and iron powder can be used as high quality carbon
The steelmaking feed of plain steel, copper is mainly 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 processing, obtains carbon dioxide, ammonia and cupric oxide, the grade of cupric oxide is 99.5%；Most
Ammoniacal liquor is made through water absorption plant in the ammonia of gained afterwards, stirred leaching tank is back to together with the carbon dioxide obtained by destilling tower
Middle to use 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 specific features, structure, material or the spy for combining the embodiment or example description
Point is contained at least one embodiment or example of the present utility model.In this manual, to the schematic table of above-mentioned term
State and be necessarily directed to identical embodiment or example.Moreover, specific features, structure, material or the feature of description can be with
Combined in an appropriate manner in any one or more embodiments or example.In addition, in the case of not conflicting, this area
Technical staff the different embodiments or example and the feature of different embodiments or example described in this specification can be entered
Row combines and combination.
Although embodiment of the present utility model has been shown and described above, it is to be understood that above-described embodiment is
Exemplary, it is impossible to it is interpreted as to limitation of the present utility model, one of ordinary skill in the art is in the scope of the utility model
It is interior above-described embodiment to be changed, changed, replaced and modification.
Claims (4)
- A kind of 1. system of Treatment of Copper iron powder, it is characterised in that including：Fine grinding device, the fine grinding device have cupric iron powder entrance and the thin iron powder outlet of cupric；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 exports, and the thin iron powder entrance of the cupric iron powder outlet thin with the cupric is connected；Ammonia steaming device, the ammonia steaming device have cupric ammonia leaching solution entrance, air intake, carbon dioxide outlet, ammonia outlet and Cupric oxide exports, and the cupric ammonia leaching solution entrance and the cupric ammonia leaching solution, which export, to be 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 comprise：Water absorption plant, the water absorption plant have ammonia entrance and ammoniacal liquor outlet, 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 or 2, it is characterised in that the ammonia bath unit is stirred leaching tank.
- 4. system according to claim 1 or 2, it is characterised in that the ammonia steaming device is destilling tower.
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